EP0103022B1 - Remote-controllable circuit breaker - Google Patents

Remote-controllable circuit breaker Download PDF

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Publication number
EP0103022B1
EP0103022B1 EP83900440A EP83900440A EP0103022B1 EP 0103022 B1 EP0103022 B1 EP 0103022B1 EP 83900440 A EP83900440 A EP 83900440A EP 83900440 A EP83900440 A EP 83900440A EP 0103022 B1 EP0103022 B1 EP 0103022B1
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EP
European Patent Office
Prior art keywords
link
contact
circuit breaker
trip
mowable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP83900440A
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German (de)
French (fr)
Other versions
EP0103022A4 (en
EP0103022A1 (en
Inventor
Youichi Matsushita Electric Works Ltd. Yokoyama
Hideya Matsushita Electric Works Ltd. Kondo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
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Matsushita Electric Works Ltd
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Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Publication of EP0103022A1 publication Critical patent/EP0103022A1/en
Publication of EP0103022A4 publication Critical patent/EP0103022A4/en
Application granted granted Critical
Publication of EP0103022B1 publication Critical patent/EP0103022B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • H01H89/06—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device
    • H01H89/08—Combination of a manual reset circuit with a contactor, i.e. the same circuit controlled by both a protective and a remote control device with both devices using the same contact pair
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04—Means for indicating condition of the switching device

Definitions

  • the present invention relates to a remote control circuit breaker, the moving contact assembly of which is kept on or off by means of a bistable electromagnetic device according to the preamble of claim 1.
  • this type of circuit breaker as known from patent US-A-3,211,955 uses a rocking mechanism which ensures the maintenance of a lever and of a movable contact equipment in the on or off position, so that the force required to operate the lever is maximum at the center of the stroke of the lever due to the spring force of the rocking mechanism. Therefore, in the case where such a circuit breaker is controlled by means of a remote control electromagnet assembly, as the attraction thereof is inversely proportional to the square of the width of the main iron , the maximum force needs to be applied to the center of the stroke of the joystick, requiring an increase in the power of the electromagnet assembly. Thus, the circuit breaker leaves something to be desired in that the electromagnet assembly is large in size or that the excitation current of the windings is increased.
  • circuit breakers contain two electromagnets to ensure the switching on or off of the circuit breaker, which makes them unsatisfactory in that they are inevitably large.
  • one of the aims of the invention is to provide a remote control circuit breaker which makes it possible to reduce the force applied to the remote control electromagnet assembly and to globally miniaturize the circuit breaker.
  • the circuit breaker of the present invention is characterized in that the electromagnet is a polarized bistable electromagnet, in that by pivoting in the operating position, the lever biases a return compression spring whose return force is less than the holding force of the electromagnet in the non-excited state, in that the stop pawl is pivotally mounted on a fixed axis in the casing and is articulated by its end remote from the pawl tripping, to the movable contact assembly which is articulated on its side to the actuating element, the stop pawl attacking the movable contact equipment between its end carrying the movable contact and its articulated end at the actuating element and being biased by a spring in the direction of opening of the moving contact assembly.
  • the electromagnet assembly of the bistable polarized type is provided so that the attraction of its permanent magnet is adjusted to allow the joystick to '' be maintained in its engaged or disengaged position against the action of the elastic force of the contact pressure application spring and the return spring. Therefore, it suffices that the attraction of the magnet of the electromagnet, for the operations of engagement and disengagement, to overcome its own attraction of locking. It follows that the operation of the lever is carried out manually by light pressure and that the electromagnet is subjected to a lesser load than the conventional electromagnet, which makes it possible to give it small dimensions and save energy. In addition, the use of a single electromagnet is sufficient, which allows the circuit breaker to be of greatly reduced external dimensions.
  • a casing A (body of the circuit breaker), as visible in FIG. 6, mainly comprises a general casing 1 an inner casing 2, a lateral casing 3 and an upper cover 4, the inner casing 2 having a top plate 11a and a plate rising 11 and substantially closing with them the lateral and upper openings of the general casing 1, the lateral casing 3 covering the external surface of the internal casing 2, so that the general casing 1, the internal casing 2 and the lateral casing 3 are are secured by means of eyelet pins 8 inserted into three assembly holes 5 to 7 formed in the general casing 1 and in the side casing 3.
  • the upper cover 4 made of elastic plastic material is fixed to fixing walls 9 and 10 at the upper ends of the general casing 1 and of the lateral casing 3 and on the lateral edges of the top plate 11a of the inner casing 2, and it has end wings 12 extending outwards e n starting from the two ends of the upper cover 4.
  • At the lower end of the casing A are formed in the general casing 1 assembly grooves 19 which serve to mount the circuit breaker on a panel or the like.
  • Terminals mainly include main terminals 20 and 21 for the power lines, a control terminal 22 for a remote control signal and an associated auxiliary terminal, the main terminals 20 and 21 comprising respective terminal sets (21) on the supply side and (20) on the use side, the terminal assemblies (20) and (21) comprising terminal segments 24 and 25, washers 26 with engagement projections, spring washers 27, square nuts 28 and terminal screws 29 , respectively.
  • the terminal segments 24 and 25 are bent downwards at their lateral edge to form respective descending tongues 31 and 32, the terminal assemblies 20 and 21 being assembled to shoulders 15 and 16 situated at the lower part of the two sides of envelope A, respectively.
  • the control terminal 22 comprises U-shaped terminal clamps 36 and terminal screws 37 which are screwed into the upper bent portions of the stirrups, and it is fixed to an upper shoulder 18 formed in the inner casing 2, the three terminal stirrups 36 being each engaged on a fixed slot 39 formed in the shoulder 18 and immovably enclosing the shoulder la by their elastic pressure effect.
  • the auxiliary terminal 23 comprises three terminal segments 40 and terminal screws 41 and it is mounted on the upper shoulder 17 of the inner casing 2 on one side of the terminal assembly 20 on the use side.
  • the electrical circuit between the main terminals 20 and 21 mainly comprises a contact assembly 43, an electromagnet assembly of the plunger type 44 and a bimetallic strip 45, as visible in FIG. 6, which are arranged substantially in alignment with the terminals main 20 and 21, the contact assembly 43 used to switch the circuit and comprising a fixed contact 46 and a movable contact assembly 48 comprising a movable contact 47 and being positioned by a partition 50 which rises upwards to separate a arc extinguishing chamber of a control electromagnet housing 52.
  • a slot 55 into which is inserted a multi-strand copper wire 52 or a conductive plate which connects the fixed contact segment 33 and the terminal segment 25 by soldering, as visible in FIG. 5.
  • the movable contact assembly 48 comprises a movable contact plate 57, a contact bracket 58, a contact pressure application spring 59 and the movable contact 47, the movable contact plate 57 and the contact stirrup 58 being articulated by their upper part by means of a pivot 60, the contact pressure application spring 59 being placed in compression between the contact plate 57 and the contact stirrup 58 and at above the pivot 60, as visible in FIGS.
  • the movable contact assembly 48 has a fixing hole 61 a at the lower end and above the opening 62, which makes it possible to engage an axis 63 in the hole 61a and to articulate the contact stirrup 58 with a locking connecting element 64 which will be considered below, by means of which the movable contact 47 comes into contact with the fixed contact 46 as shown in FIG. 5.
  • the plunger type solenoid assembly 44 serves to detect a short circuit current, and it includes a yoke 65, a winding 66, a winding carcass 67, a fixed iron core 68, a spring reminder 69, a plunger 70 and a movable rod 71, the cylinder head 65 comprising a U-shaped frame 72 and a support plate 73 assembled and secured thereto by square holes 77 in the plate 73 in which the projections are mated 76 of frame 72.
  • the cylinder head 65 is in one piece with a frame 79 intended to carry a mechanism 78 which will be described later.
  • a side plate 82 of electrically conductive material, such as copper or a copper alloy, is placed upright and facing the other side plate 80 and it is fitted by square holes 83 on projections 81 of the frame with U-shaped profile 72, fixed by matting.
  • the support plate 73 is bent at its lower end from which it extends to form an arc confinement plate 84, and the electromagnet assembly plunger type 44 is placed on a support base formed by the general casing 1, the arc confinement plate 84 coming into contact with the underside of the support base la so that the base la is taken between the electromagnet assembly 44 and the arc confinement plate 84.
  • Two axes 87 and 88 for the mechanism 78 are arranged on either side of receiving bores 89 of the general casing 1 and of the inner casing 2 and on either side of receiving bores 90 of the general casing 1 and of the inner casing 2, and they penetrate by the bores 91 and 92 of the chassis 79 thus maintaining the chassis 79 and coming into abutment against the side plate 82 adjacent to the inner casing 2, so as to ensure the positioning of the cylinder head 65 and of the chassis 79.
  • the fixed iron core 68 having a through hole 68a is adapted in a bore 93 at the bottom of the frame with a profile U 72 and crimped thereto by matting, the movable rod 71 being longer than the iron core 68 and being slidably inserted into the through bore 68a.
  • the winding carcass 67 has at one of its ends a portion of smaller diameter 94 which fits in a fixing bore 95 formed in the support plate 73, and it is adapted at its other end on the core of fixed iron 68.
  • the plunger 70 is adapted to slide in the winding carcass 67 and a forced contact opening rod 96 starting from one of the ends of the plunger 70 exits through the small diameter portion 94 of the carcass d winding 67, so that a collar 97 located at the very end of the rod 96 passes through a large diameter portion of the opening in the shape of a keyhole 62 and is placed in the slot thereof.
  • the return spring 69 is compressed between the fixed iron core 68 and the plunger 70.
  • the electromagnet assembly 44 when a nominal current of the winding 66 or an overcurrent y simply flows, restricts the movement of the plunger 70 by the thrust of the return spring 69, but when a short-circuit current flows, the magnetic flux between the fixed iron core 68 and the plunger 70 increases to overcome the action the return spring 69, from which follows that the plunger 70 is attracted by the fixed iron core 63 and that it approaches it. Therefore, the movable rod 71 is pushed towards the plunger 70 and it advances outside the U-shaped frame 72, and the collar 97 of the forced contact opening rod 96 is retained by the slot of the opening 62, which makes it pull the movable contact plate 57.
  • the bimetallic strip 45 is curved approximately in the shape of an L, and it comprises a horizontal segment and an oblique segment, the oblique segment having at its upper end a spacing adjustment screw 100 screwed into that -this, the horizontal segment 98 having a crimping hole (not shown) by which the bimetallic strip 45 is crimped by stamping at the lower end of the side plate 82, the bimetallic strip 45 and the winding 66 being connected by a wire welded flexible copper 101, the side plate 82 and the movable contact plate 57 being connected by a welded flexible copper wire 102.
  • the bimetallic strip 45 curves by causing the oblique segment to move apart of the terminal assembly 20, the curvature phenomenon being calibrated so that it is caused by an overcurrent of approximately several times the nominal intensity.
  • the terminal assembly (21) on the supply side and the terminal assembly (20) on the use side are connected by the multi-strand copper connection wire 56, the fixed contact plate 57, the multi-strand copper wire 102, the chassis side plate 82, the bimetallic strip 45, the multi-strand copper wire 101 and the winding 26, in this order, and the interlocking and tripping control is operated by the assembly of contact 43.
  • the arc extinguishing chamber 51 allows the arc to which the contact assembly 43 gives rise to quickly leave contacts 46 and 47 and to disappear, and it mainly comprises an evacuation orifice 103, arc confinement plates 84 and 104, a deionization grid 105 and an evacuation plate 106.
  • the arc leaves the contacts 46 and 47, travels on the arc containment plates 84 and 104, then approaches the deionization grid 105 to be attracted by the latter, enters it, is fragmented and cooled by the deionization grid 105, which leads it to extinguish, so that the gas which comes therefrom is evacuated outside by the evacuation orifice 103.
  • the mechanism 78 comprises a connecting element for trigger 109, a locking link member 64, a control link member 110, a lever 111 and a control solenoid assembly 112, the trigger link member 109 comprising an ascending segment 113, a side segment 114 and an ear-shaped segment 115, the lateral segment 114 and the ear-shaped segment 115 having respective axis holes 116, which makes it possible to introduce an axis 87 into the holes 91 of the lateral frame 79 and of the lateral plate 82 on the bimetal side 45 of these, and of mounting it pivoting at its two ends in the support holes 89 formed in the general casing 1 and in the internal casing 2.
  • the ascending segment 113 of the trigger linkage 109 is positioned at the lower end in front of the movable rod 71 of the plunger-type electromagnet assembly 44 and at the upper end in front of the spacing adjustment screw 100 of the bimetal strip 45, the lateral segment 114 advancing at an angle upwards and forming at the oblique upper flank of its end a descending hook portion 119 and at its upper edge a surface in an arc of a circle 120.
  • a helical return spring 121 is fitted on the axis 87 at the level of the trigger connecting element 109 , and it is retained at one of its ends 121a against the oblique lower edge of the lateral segment 114, and retained at its other end by abutting against the upper segment of the cylinder head 65.
  • the element trigger link 109 is biased angularly anti-clockwise in Figure 5, and the lower end of the ascending segment 113 bears against the end of the movable rod 71 so as to be able to be held against the protruding face of the iron core f ix 68.
  • the locking connecting element 64 comprises a pair of elongated lateral segments 122 and 123 connected by a bridge segment 124 and it has holes 125 in which engages an axis 88 which has passed through the holes 92 of the lateral chassis 79 and of the side plate 82 and which is pivotally mounted at its two ends in the support holes 90 of the general casing 1 and of the internal casing 2, the pin 88 carrying a helical return spring 127.
  • the helical spring 127 is retained at one of its ends by the upper segment of the cylinder head 65 and at its other ends by the lateral edges of the lateral segments 122 and 123, so that the locking connecting element 64 is adapted to be biased angularly in the clockwise in FIG. 7 by the return force of the spring 127 and able to be retained at the lower end by the upper edge of the support plate 73.
  • the upper end of the locking link member 64 intersects with that of the trigger link member 109, and a latch 128 located at the bottom end of the bridge segment 124 is located above the angular travel of the hook portion 119 of the trigger connecting element 109.
  • the trigger link member 109 and the latch link member 64 are placed in the reset state, the trigger link member 109 being held in the position in which the adjustment screw bimetallic strip 100 and the movable rod 71 are detected by the ascending segment 113.
  • the trigger connecting element 109 acts, the locking connecting element 64 is released from it and placed in the triggering state.
  • the pin 63 intended to support the movable contact assembly 43 is pivotally mounted in the holes 129 of the lower end of the locking connecting element 64.
  • the handle 111 is formed of an insulating material and it is inserted into a handle insertion notch 130a of the top plate 11a of the inner casing 2 and into a handle insertion slot 130b of the upper cover 4 so as to be rotatably supported by an axis 131 pivoting in bores 131a a of the general casing 1 and of the inner casing 2.
  • the lever 111 carries indicator plates 111 b each of which is in an arc starting from one of the two sides thereof, and it is provided at its lower end with a coupling bore 133 and, on the right side, an arm 134 advancing approximately horizontally, the arm 134 having a coupling bore plunger 135 ( Figure 8).
  • the connecting element or control rod 110 is formed by an H-profile plate bent on both sides in the same direction, and it comprises the two lateral segments 136 and a bridge segment 137, the two lateral segments 136 being coupled at one of their ends to the coupling bore 133 by a pivot 138 and at their other end to the pivot 60 supporting the movable contact plate 57 and the contact bracket 58.
  • the lever 111 of FIG. 9 is turned to the right and it is placed in the on position, thus pushing the movable contact assembly 48 to the left via the control link element. 110.
  • the locking connecting element 64 is locked to the triggering connecting element 109
  • the moving contact element 48 rotates around the rod 63 to bring the moving contact element 47 into contact with the contact fixed 46.
  • the movable frame 57 then rotates around the rod 60 because the contacts 47 and 46 are both in mutual contact to compress the spring compression 59, which applies the contact pressure to the contact assembly 43 and keeps the circuit breaker in the on position thanks to the control electromagnet assembly 112 which will be described later.
  • a trip display assembly 139 operates a trip display when the circuit breaker is tripped by an abnormal current, and it comprises a display link 139a and a conjugation rod 139b, as visible in FIG. 8, the display link 139a being articulated at its lower end to the lever axis 131 and having at its upper end a trigger display sector (the surface of which is marked as "DECL") in an arc.
  • the conjugation rod 139b comprises a rod bent at its two ends in the same direction, and it is connected to the upper ends of the display link 139a and of the locking connecting element 64. In the reset state, the the trigger display assembly 139 is retracted from the stop position of the lever 111, as shown in FIGS.
  • the locking connecting element 64 rotates in the direction clockwise to push the conjugation rod 139b, and it rotates the display link 139a so as to allow the trigger display sector 139c to come and cover the market display plate 111b (the lever 111 still being located in the on position). It follows that the mention "DECL” carried by the trigger display sector 139c appears in the slot 130b and that the mention "ON" becomes invisible.
  • control electromagnet assembly 112 is mounted in a housing 52 of the general casing 1 so that the outlet side of the plunger 140 remains oriented upwards.
  • the plunger 140 being coupled by its upper end to a plunger coupling bore 135 of the handle 111 by means of a U-shaped rod 141.
  • the assembly with control electromagnet 112 is of the type bistable polarized, and it comprises, as visible in FIG.
  • a winding carcass 143 providing a rectangular through hole 144 and upper and lower cheeks 145 and 146, a winding 147, a pair of inner yoke elements 148 bearing against the two lateral flanks of the winding carcass 143, a pair of permanent magnets 149 (whose magnetic poles are represented by N and S) attracted against the external surfaces of the internal cylinder head elements 148, and a pair of elements of outer yoke attracted to the outer sides of the permanent magnets 149, respectively.
  • the plunger 140 passes through the rectangular bore 144 of the winding carcass 143, and it has cheeks 151 and 152 placed between the inner breech elements 148 and the outer breech elements 150, respectively.
  • a coupling stud 153 which has at its upper end an engagement bore 153a in which the U-rod 141. is pivotally received.
  • a damper 154 is interposed between and below the lower ends of the external cylinder head elements 150 in order to dampen the displacements of the plunger 140.
  • the upper and lower ends 148a and 148b of the lower yoke elements 148 all have magnetization of polarity S, and those of the outer yoke elements 150 have a magnetization of polarity N, and they face each other.
  • the cheeks 151 and 152 of the plunger 140 when they are placed as represented by one or the other of FIGS. 9 and 10, are attracted by the cylinder head elements 148 or 150 and secured to them. this.
  • a compression return spring 155 is interposed between the arm 135, the lever 11 and the winding carcass 143, the return force of the spring 155 being weaker than the attraction towards the plunger 140, but acting when the lever 111 is placed in the on position by manual operation or by the electromagnet assembly 112, which immediately causes the separation of the contacts 46 and 47.
  • the electromagnet assembly 112 When the electromagnet assembly 112 is not energized, setting on or off position is effected by manual operation of the lever 111, which causes the plunger 140 to descend or rise with the latter maintained in the lower or upper position by the magnetic force of the permanent magnets 149, which maintains the lever 111 in its on or off position.
  • the moving contact assembly 48 is kept in contact with the fixed contact 46 with contact pressure as shown in FIG.
  • a pair of rectifier diodes 56 and 57 and a contact assembly switch 158 shown in Figure 14, which supplies the electromagnet assembly 112 with alternating current.
  • These components are arranged in a cavity formed between the inner casing 2 and the lateral casing 3 and on the side of the inner casing 2.
  • a fixed contact stirrup with U-profile 160 is fitted on a fixed projection 161 and a pair of switching contact blades 162 and 163 are carried by slots 165a and 165b of a support projection 164 facing the projection 165 with pinching so as to come into contact with the fixed contact bracket 160 on the upper surfaces and lower of it respectively.
  • a bore 166 in an arc is formed between the fixed projection 161 and the support projection 164, and a switching contact control lever 167 formed on one side of the arm 134 of the lever 111 and forming a single piece with the arm 134 perforates the bore 166 to be positioned between the switching contacts 162 and 163, so that when the lever 111 is in the operating position (FIG. 9), the lever 167 separates the lower switching contact blade 163 from the fixed contact blade 160, and that, when it is in the stop position (FIG. 10), it separates the upper switching contact blade 162 from the latter.
  • the ends of the winding 147 are connected to the fixed contact blade 160 and to one of the control terminals 22 and the diodes 156 and 157 are connected by one of their ends to the pair of movable contact blades 162 and 163 so that their polarities are mutually opposite and by their other end to the other control terminal 22, as shown in FIG. 14.
  • the reference numeral 167 denotes an AC power source and the reference numeral 168 an external inverter.
  • the external inverter when the external inverter is in the active position, a unidirectional current flows in the winding 147 passing through the diode 156, so that the plunger 140 passes from the high position of FIG. 10 to the low position of the FIG.
  • the locking connecting element 64 is released from the triggering connecting element 109 and it pivots under the action of the spring 127 as shown in FIGS. 11 and 12, from which follows that the pivot 63 rotates and that the movable contact assembly 48 rotates on the axis 138 under the action of the element control link 110.
  • the movable contact 47 is separated from the fixed contact 46 without actuation of the plunger 153 of the electromagnet assembly 112 or of the lever 111, which performs the operation without triggering separation of the movable contact 47 from the fixed contact 46.
  • the above embodiment constitutes a three-wire device.
  • the control terminal in common to the diodes 156 and 157 and for the external inverter 168 to be provided with a pair of diodes 169 and 170, and the operating principle is the same as that of the three-wire device.
  • a direct voltage is applied to excite the electromagnet assembly 112.
  • a trigger test button 171 shown in the drawing advantageously makes it possible to verify the triggering operation of the mechanism 78, by pivoting to push from its lower end 171 to the oblique lateral segment 114 of the trigger linkage element. 109, which rotates the trigger linkage member 109 to the right by disengaging it from the locking linkage member 64 to thereby perform the triggering operation.
  • the embodiment which has just been described constitutes a circuit breaker of single-pole configuration.
  • a winding 147 of each pole to the electromagnet assembly 112 is mutually connected in series and the control terminal 22 is used only for one pole, so that a control signal is given to the control terminal 22, thereby allowing the electromagnet assemblies 112 to be controlled simultaneously.
  • FIGS. 9 and 13- (a) The circuit breaker in the operating position is represented by FIGS. 9 and 13- (a), where the locking connecting element is locked by the tripping connecting element 109, the lever 111 is turned to the right to set contact the moving contact assembly 48 with the fixed contact 46, and the plunger 140 of the control electromagnet assembly 112 moves downward to be retained by the permanent magnets 149, which maintains the lever 111 and the moving contact assembly 48 in the on position.
  • this operation for placing in the running position includes the direct operation of the lever 111 and the downward thrust of the plunger 140 by the signal supplied to the control terminal 22.
  • Figures 13- (b) and 10 show the circuit breaker in the off position, in which the locking connecting element 64 is locked as before, hence that the lever 111 is turned to the left and the moving contact assembly 48 is in the cut-off position.
  • the plunger 140 of the control electromagnet assembly 112 is immobilized in the high position. The functional relationship and the operating mode are the same as in the aforementioned operating position.
  • FIG. 9 shows a tripping situation by overcurrent.
  • the bimetallic strip 45 heats up to gradually push the trigger connecting element 109 and the locking connecting element 64 is released and pivots, which lowers the pivot 63 of the moving contact assembly and, as the lever 111 is immobilized by the plunger 140, the moving contact 47 is separated from the fixed contact 46, thereby cutting the circuit.
  • the resetting operation after triggering is carried out by rotating the lever 111 to move it from the position in FIG. 11 to the stop position, in which the control link element 110 pulls moving contact assembly 48 upward so that the locking link member 64 rotates counterclockwise to lock the lock 128 to the hook portion 119 of the trigger link member 109.
  • signals are likely to be supplied to the control terminals 15 and 16 to actuate the assembly with the electromagnet 112 by causing it to bring the lever 111 into its stopped position.
  • Tripping by short-circuit current is shown in Figures 13- (d) and 12.
  • a short-circuit current flows through the circuit, the plunger 96 of the electromagnet assembly 44 is attracted to the fixed iron core 68, so that the movable rod 71 comes out by pushing the lower end of the trigger link element 109 and by pivoting the trigger link element 109, which releases the locking connecting element 64 to give rise to the separation of the movable contact assembly 48 from the fixed contact 46.
  • the display link 139a pivots in concert with the locking connecting element 64, and the triggering display sector 139c covers the walking display sector 111b to operate the trigger display.
  • the remote control circuit breaker according to the invention is arranged so that the trigger connecting element 109 and the locking connecting element 64 are provided with return springs and locked respectively and that the maintenance in the on and off position of the movable contact assembly supported by the locking connecting element 64 depends on the polarized electromagnet assembly of the bistable type, which is advantageous in that the electromagnet can be reduced in size and an energy consumption saving is achieved compared to the conventional circuit breaker, and also that the implementation of a single electromagnet can significantly miniaturize the circuit breaker.

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Description

La présente invention est relative à un disjoncteur à télécommande dont l'équipage de contact mobile est maintenu enclenché ou déclenché grâce à un appareil électromagnétique bistable selon le préambule de la revendication 1.The present invention relates to a remote control circuit breaker, the moving contact assembly of which is kept on or off by means of a bistable electromagnetic device according to the preamble of claim 1.

Ordinairement, ce genre de disjoncteur, comme connu du brevet US-A-3 211 955 fait appel à un mécanisme basculeur qui assure le maintien d'une manette et d'un équipage de contact mobile en position de marche ou d'arrêt, de sorte que la force nécessaire pour manoeuvrer la manette est maximale au centre de la course de la manette du fait de la force de ressort du mécanisme basculeur. De ce fait, dans le cas où un tel disjoncteur est commandé au moyen d'un ensemble à électro-aimant de commande à distance, comme l'attraction de celui-ci est inversement proportionnelle au carré de la largeur de l'entre fer principal, l'effort maximum a besoin d'être appliqué au centre de la course de la manette, en nécessitant un accroissement de la puissance de l'ensemble à électro-aimant. Ainsi, le disjoncteur laisse à désirer en ceci que l'ensemble à électro-aimant est à fort dimensionnement ou que le courant d'excitation des enroulements est accru.Ordinarily, this type of circuit breaker, as known from patent US-A-3,211,955 uses a rocking mechanism which ensures the maintenance of a lever and of a movable contact equipment in the on or off position, so that the force required to operate the lever is maximum at the center of the stroke of the lever due to the spring force of the rocking mechanism. Therefore, in the case where such a circuit breaker is controlled by means of a remote control electromagnet assembly, as the attraction thereof is inversely proportional to the square of the width of the main iron , the maximum force needs to be applied to the center of the stroke of the joystick, requiring an increase in the power of the electromagnet assembly. Thus, the circuit breaker leaves something to be desired in that the electromagnet assembly is large in size or that the excitation current of the windings is increased.

De plus, les disjoncteurs classiques contiennent deux électro-aimants pour assurer l'enclenchement ou la coupure du disjoncteur, ce qui les rend insatisfaisants en ceci qu'ils sont inévitablement de grandes dimensions.In addition, conventional circuit breakers contain two electromagnets to ensure the switching on or off of the circuit breaker, which makes them unsatisfactory in that they are inevitably large.

En conséquence, l'un des buts de l'inventiton est de réaliser un disjoncteur à télécommande qui permet de réduire l'effort appliqué à l'ensemble à électro-aimant de télécommande et de miniaturiser globalement le disjoncteur.Consequently, one of the aims of the invention is to provide a remote control circuit breaker which makes it possible to reduce the force applied to the remote control electromagnet assembly and to globally miniaturize the circuit breaker.

Le disjoncteur de la présente invention est caractérisée en ce que l'électro-aimant est un électro-aimant polarisé bistable, en ce qu'en pivotant dans la position de marche, la manette sollicite un ressort de compression de rappel dont la force de rappel est moindre que la force de maintien de l'électro-aimant à l'état non excité, en ce que le que le cliquet d'arrêt est monté pivotant sur un axe fixe dans le carter et est articulé, par son extrémité éloignée du cliquet de déclenchement, à l'équipage de contact mobile qui est articulé de son côté à l'élément d'actionnement, le cliquet d'arrêt attaquant l'é- qipage de contact mobile entre son extrémité portant le contact mobile et son extrémité articulée à l'élément d'actionnement et étant sollicité par un ressort dans la direction de l'ouverture de l'équipage de contact mobile.The circuit breaker of the present invention is characterized in that the electromagnet is a polarized bistable electromagnet, in that by pivoting in the operating position, the lever biases a return compression spring whose return force is less than the holding force of the electromagnet in the non-excited state, in that the stop pawl is pivotally mounted on a fixed axis in the casing and is articulated by its end remote from the pawl tripping, to the movable contact assembly which is articulated on its side to the actuating element, the stop pawl attacking the movable contact equipment between its end carrying the movable contact and its articulated end at the actuating element and being biased by a spring in the direction of opening of the moving contact assembly.

Comme la manette est au zéro de sa force de manoeuvre au centre de la course de manette, l'ensemble à électro-aimant de type polarisé bistable est prévu en sorte que l'attraction de son aimant permanent est réglée pour permettre à la manette d'être maintenue dans sa position enclenchée ou désenclenchée contre l'action de la force élastique du ressort d'application de la pression de contact et du ressort de rappel. De ce fait, il suffit que l'attraction de l'aimant de l'électro-aimant, pour les opérations d'enclenchement et de désenclenchement, de surmonter sa propre attraction de verrouillage. Il s'ensuit que la manoeuvre de la manette s'effectue manuellement par une pression légère et que l'électro-aimant est soumis à une charge moindre que l'électro-aimant classique, ce qui permet de lui donner de petites dimensions et de faire une économie d'énergie. En outre, l'utilisation d'un électro-aimant unique est suffisante, ce qui permet au disjoncteur d'être de dimensions extérieures fortement réduites.As the joystick is at zero of its operating force at the center of the joystick stroke, the electromagnet assembly of the bistable polarized type is provided so that the attraction of its permanent magnet is adjusted to allow the joystick to '' be maintained in its engaged or disengaged position against the action of the elastic force of the contact pressure application spring and the return spring. Therefore, it suffices that the attraction of the magnet of the electromagnet, for the operations of engagement and disengagement, to overcome its own attraction of locking. It follows that the operation of the lever is carried out manually by light pressure and that the electromagnet is subjected to a lesser load than the conventional electromagnet, which makes it possible to give it small dimensions and save energy. In addition, the use of a single electromagnet is sufficient, which allows the circuit breaker to be of greatly reduced external dimensions.

La description et les figures annexées, données à titre d'exemple feront comprendre comment l'invention peut être réalisée.

  • La figure 1 est une vue en plan d'une forme de réalisation d'un disjoncteur selon l'invention;
  • la figure 2 est une vue de profil du disjoncteur de la figure 1;
  • la figure 3 est une vue de face du disjoncteur de la figure 1;
  • la figure 4 est une vue de dos du disjoncteur de la figure 1;
  • la figure 5 est une vue de profil avec coupe partielle de la forme de réalisation de la figure 1, après enlèvement de son carter intérieur;
  • la figure 6 est une vue éclatée en perspective de la forme de réalisation de la figure 1 ;
  • la figure 7 est une vue éclatée en perspective d'un équipage de contact mobile, d'un ensemble à électro-aimant et d'un mécanisme;
  • la figure 8 est une vue éclatée en perspective d'un ensemble à électro-aimant polarisé de type bistable et d'une manette;
  • la figure 9 est une vue de profil avec coupe partielle de la forme de réalisation de la figure 1 dans la position de marche;
  • la figure 10 est une vue de profil avec coupe partielle du disjoncteur de la figure 1 dans la position d'arrêt;
  • la figure 11 est une vue de profil avec coupe partielle du disjoncteur de la figure 1 dans l'état de déclenchement par la bilame;
  • la figure 12 est une vue de profil avec coupe partielle du même disjoncteur dans l'état de déclenchement par l'ensemble à électro-aimant;
  • la figure 13 montre des schémas de fonctionnement de la forme de réalisation de la figure 1;
  • la figure 14 montre des schémas électriques de la commande par système à trois fils de l'ensemble à électro-aimant polarisé de type bistable; et
  • la figure 15 montre des schémas électriques de la commande par système à deux fils du même ensemble à électro-aimant.
The description and the appended figures, given by way of example, will make it clear how the invention can be implemented.
  • Figure 1 is a plan view of an embodiment of a circuit breaker according to the invention;
  • Figure 2 is a side view of the circuit breaker of Figure 1;
  • Figure 3 is a front view of the circuit breaker of Figure 1;
  • Figure 4 is a rear view of the circuit breaker of Figure 1;
  • Figure 5 is a side view with partial section of the embodiment of Figure 1, after removal of its inner casing;
  • Figure 6 is an exploded perspective view of the embodiment of Figure 1;
  • Figure 7 is an exploded perspective view of a movable contact assembly, an electromagnet assembly and a mechanism;
  • FIG. 8 is an exploded perspective view of a polarized electromagnet assembly of the bistable type and of a lever;
  • Figure 9 is a side view with partial section of the embodiment of Figure 1 in the on position;
  • Figure 10 is a side view with partial section of the circuit breaker of Figure 1 in the off position;
  • Figure 11 is a side view with partial section of the circuit breaker of Figure 1 in the tripping state by the bimetallic strip;
  • Figure 12 is a side view with partial section of the same circuit breaker in the tripping state by the electromagnet assembly;
  • Figure 13 shows operating diagrams of the embodiment of Figure 1;
  • FIG. 14 shows electrical diagrams of the control by three-wire system of the polarized electromagnet assembly of the bistable type; and
  • FIG. 15 shows electrical diagrams of the control by two-wire system of the same electromagnet assembly.

On va d'abord décrire un agencement unipolaire, qui est adapté à détecter une surintensité et un courant de court-circuit sur la ligne et d'effectuer l'opération de déclenchement, et qui permet de commander au moyen de la manette et d'un signal de télécommande la mise de la ligne en circuit, hors circuit et en réenclenchement.We will first describe a unipolar arrangement, which is adapted to detect an overcurrent and a short-circuit current on the line and to carry out the tripping operation, and which makes it possible to control by means of the lever and a remote control signal to switch the line on, off and on again.

Une enveloppe A (corps du disjoncteur), comme visible sur la figure 6, comprend principalement un carter général 1 un carter intérieur 2, un carter latéral 3 et un couvercle supérieur 4, le carter intérieur 2 présentant une plaque de dessus 11a et une plaque montante 11 et fermant sensiblement avec celles-ci les ouvertures latérale et supérieure du carter général 1, le carter latéral 3 couvrant la surface extérieure du carter intérieur 2, de sorte que le carter général 1, le carter intérieur 2 et le carter latéral 3 se trouvent solidarisés au moyen de broches à oeillets 8 insérées dans trois trous d'assemblage 5 à 7 formés dans le carter général 1 et dans le carter latéral 3. Le couvercle supérieur 4 en matière plastique élastique, est fixé sur des parois de fixation 9 et 10 aux extrémités supérieures du carter général 1 et du carter latéral 3 et sur les bords latéraux de la plaque de dessus 11a du carter intérieur 2, et il comporte des ailes terminales 12 s'étendant vers l'extérieur en partant des deux extrémités du couvercle supérieur 4. A l'extrémité inférieure de l'enveloppe A sont formées dans le carter général 1 des rainures d'assemblage 19 qui servent à monter le disjoncteur sur un panneau ou similaire.A casing A (body of the circuit breaker), as visible in FIG. 6, mainly comprises a general casing 1 an inner casing 2, a lateral casing 3 and an upper cover 4, the inner casing 2 having a top plate 11a and a plate rising 11 and substantially closing with them the lateral and upper openings of the general casing 1, the lateral casing 3 covering the external surface of the internal casing 2, so that the general casing 1, the internal casing 2 and the lateral casing 3 are are secured by means of eyelet pins 8 inserted into three assembly holes 5 to 7 formed in the general casing 1 and in the side casing 3. The upper cover 4 made of elastic plastic material is fixed to fixing walls 9 and 10 at the upper ends of the general casing 1 and of the lateral casing 3 and on the lateral edges of the top plate 11a of the inner casing 2, and it has end wings 12 extending outwards e n starting from the two ends of the upper cover 4. At the lower end of the casing A are formed in the general casing 1 assembly grooves 19 which serve to mount the circuit breaker on a panel or the like.

Des bornes comprennent principalement des bornes principales 20 et 21 pour les lignes électriques, une borne de commande 22 pour un signal de télécommande et une borne auxiliaire associée, les bornes principales 20 et 21 comprenant des ensembles de borne respectifs (21) du côté alimentation et (20) du côté utilisation, les ensembles de borne (20) et (21) comprenant des segments de borne 24 et 25, des rondelles 26 à saillies de prise, des rondelles élastiques 27, des écrous carrés 28 et des vis de borne 29, respectivement. Les segments de borne 24 et 25 sont coudés vers le bas à leur bord latéral pour former des languettes descendantes respectives 31 et 32, les ensembles de borne 20 et 21 étant assemblés à des épaulements 15 et 16 situés à la partie inférieure des deux côtés de l'enveloppe A, respectivement.Terminals mainly include main terminals 20 and 21 for the power lines, a control terminal 22 for a remote control signal and an associated auxiliary terminal, the main terminals 20 and 21 comprising respective terminal sets (21) on the supply side and (20) on the use side, the terminal assemblies (20) and (21) comprising terminal segments 24 and 25, washers 26 with engagement projections, spring washers 27, square nuts 28 and terminal screws 29 , respectively. The terminal segments 24 and 25 are bent downwards at their lateral edge to form respective descending tongues 31 and 32, the terminal assemblies 20 and 21 being assembled to shoulders 15 and 16 situated at the lower part of the two sides of envelope A, respectively.

La borne de commande 22 comprend des étriers de borne à profil en U 36 et des vis de borne 37 qui se vissent dans les portions supérieures coudées des étriers, et elle est fixée à un épaulement supérieur 18 formé dans le carter intérieur 2, les trois étriers de borne 36 étant engagés chacun sur une fente fixe 39 formée dans l'épaulement 18 et enserrant inamovible- ment l'épaulement la par leur effet de pression élastique. La borne auxiliaire 23 comprend trois segments de borne 40 et vis de borne 41 et elle est montée sur l'épaulement supérieur 17 du carter intérieur 2 d'un côté de l'ensemble de borne 20 du côté utilisation.The control terminal 22 comprises U-shaped terminal clamps 36 and terminal screws 37 which are screwed into the upper bent portions of the stirrups, and it is fixed to an upper shoulder 18 formed in the inner casing 2, the three terminal stirrups 36 being each engaged on a fixed slot 39 formed in the shoulder 18 and immovably enclosing the shoulder la by their elastic pressure effect. The auxiliary terminal 23 comprises three terminal segments 40 and terminal screws 41 and it is mounted on the upper shoulder 17 of the inner casing 2 on one side of the terminal assembly 20 on the use side.

Le circuit électrique entre les bornes principales 20 et 21 comporte principalement un ensemble de contact 43, un ensemble à électro-aimant du type à plongeur 44 et une bilame 45, comme visible sur la figure 6, qui sont disposés sensiblement en alignement avec les bornes principales 20 et 21, l'ensemble de contact 43 servant à commuter le circuit et comprenant un contact fixe 46 et un équipage de contact mobile 48 comportant un contact mobile 47 et étant positionné par une cloison 50 qui se dresse vers le haut pour séparer une chambre d'extinction d'arc d'un logement d'électro-aimant de commande 52.The electrical circuit between the main terminals 20 and 21 mainly comprises a contact assembly 43, an electromagnet assembly of the plunger type 44 and a bimetallic strip 45, as visible in FIG. 6, which are arranged substantially in alignment with the terminals main 20 and 21, the contact assembly 43 used to switch the circuit and comprising a fixed contact 46 and a movable contact assembly 48 comprising a movable contact 47 and being positioned by a partition 50 which rises upwards to separate a arc extinguishing chamber of a control electromagnet housing 52.

Sous le logement 52 est formée une fente 55 dans laquelle est inséré un fil de cuivre multibrins 52 ou une plaque conductrice qui relie le segment de contact fixe 33 et le segment de borne 25 par soudure, comme visible sur la figure 5.Under the housing 52 is formed a slot 55 into which is inserted a multi-strand copper wire 52 or a conductive plate which connects the fixed contact segment 33 and the terminal segment 25 by soldering, as visible in FIG. 5.

Comme représenté par la figure 12, l'équipage de contact mobile 48 comprend une plaque de contact mobile 57, un étrier de contact 58, un ressort d'application de pression de contact 59 et le contact mobile 47, la plaque de contact mobile 57 et l'étrier de contact 58 étant articulés par leur partie supérieure au moyen d'un pivot 60, le ressort d'application de pression de contact 59 étant placé en compression entre la plaque de contact 57 et l'étrier de contact 58 et au-dessus du pivot 60, comme visible sur les figures 5 et 6, ce qui permet à la plaque de contact 57 de venir élastiquement en contact en une portion intermédiaire de celle-ci avec l'extrémité inférieure de l'étrier de contact 58, en maintenant ainsi la plaque de contact 57 dans un état stable, le contact mobile 47 étant fixé à l'extrémité inférieure de la plaque de contact mobile 57, et une ouverture 62 en forme de trou de serrure destinée à ouvrir à force le contact étant formée à cet endroit au-dessus du contact mobile 47. Comme visible sur la figure 7, l'équipage de contact mobile 48 présente un trou de fixation 61 a à l'extrémité inférieure et au-dessus de l'ouverture 62, ce qui permet d'engager un axe 63 dans le trou 61a et d'articuler l'étrier de contact 58 avec un élément de liaison de verrouillage 64 qui sera considéré plus loin, grâce auquel le contact mobile 47 vient en contact avec le contact fixe 46 comme représenté par la figure 5.As shown in FIG. 12, the movable contact assembly 48 comprises a movable contact plate 57, a contact bracket 58, a contact pressure application spring 59 and the movable contact 47, the movable contact plate 57 and the contact stirrup 58 being articulated by their upper part by means of a pivot 60, the contact pressure application spring 59 being placed in compression between the contact plate 57 and the contact stirrup 58 and at above the pivot 60, as visible in FIGS. 5 and 6, which allows the contact plate 57 to come into elastic contact in an intermediate portion of the latter with the lower end of the contact stirrup 58, thus maintaining the contact plate 57 in a stable state, the movable contact 47 being fixed to the lower end of the movable contact plate 57, and an opening 62 in the form of a keyhole intended to force open the contact being formed there above the movable contact 4 7. As visible in FIG. 7, the movable contact assembly 48 has a fixing hole 61 a at the lower end and above the opening 62, which makes it possible to engage an axis 63 in the hole 61a and to articulate the contact stirrup 58 with a locking connecting element 64 which will be considered below, by means of which the movable contact 47 comes into contact with the fixed contact 46 as shown in FIG. 5.

L'ensemble à électro-aimant de type à plongeur 44 sert à détecter un courant de court-circuit, et il comprend une culasse 65, un enroulement 66, une carcasse d'enroulement 67, un noyau de fer fixe 68, un ressort de rappel 69, un plongeur 70 et une tige mobile 71, la culasse 65 comprenant une ossature à profil en U 72 et une plaque support 73 assemblée et solidarisée à celle-ci par des trous carrés 77 de la plaque 73 dans lesquels sont matées des saillies 76 de l'ossature 72.The plunger type solenoid assembly 44 serves to detect a short circuit current, and it includes a yoke 65, a winding 66, a winding carcass 67, a fixed iron core 68, a spring reminder 69, a plunger 70 and a movable rod 71, the cylinder head 65 comprising a U-shaped frame 72 and a support plate 73 assembled and secured thereto by square holes 77 in the plate 73 in which the projections are mated 76 of frame 72.

De plus, la culasse 65 est d'un seul tenant avec un châssis 79 destiné à porter un mécanisme 78 qui sera décrit plus loin. Une plaque latérale 82 en matériau électriquement conducteur, tel que du cuivre ou qu'un alliage de cuivre, est disposée debout et face à l'autre plaque latérale 80 et elle s'adapte par des trous carrés 83 sur des saillies 81 de l'ossature à profil en U 72 avec solidarisa- tion par matage. La plaque support 73 est coudée à son extrémité inférieure à partir de laquelle elle se prolonge pour former une plaque de confinement d'arc 84, et l'ensemble à électro-aimant de type à plongeur 44 est placé sur une embase de support la ménagée par le carter général 1, la plaque de confinement d'arc 84 venant en contact avec la face inférieure de l'embase de support la de façon que l'embase la se trouve prise entre l'ensemble à électro-aimant 44 et la plaque de confinement d'arc 84. Deux axes 87 et 88 pour le mécanisme 78 sont disposés de part et d'autre d'alésages de réception 89 du carter général 1 et du carter intérieur 2 et de part et d'autre d'alésages de réception 90 du carter général 1 et du carter intérieur 2, et ils pénètrent par les alésages 91 et 92 du châssis 79 en maintenant ainsi le châssis 79 et en venant en butée contre la plaque latérale 82 adjacente au carter intérieur 2, pour assurer ainsi le positionnement de la culasse 65 et du châssis 79. Le noyau de fer fixe 68 présentant un trou traversant 68a est adapté dans un alésage 93 au fond de l'ossature à profil en U 72 et serti à celui-ci par matage, la tige mobile 71 étant plus longue que le noyau de fer 68 et étant insérée à coulissement dans l'alésage traversant 68a. La carcasse d'enroulement 67 présente à l'une de ses extrémités une portion de plus petit diamètre 94 qui s'adapte dans un alésage de fixation 95 formé dans la plaque support 73, et elle est adaptée à son autre extrémité sur le noyau de fer fixe 68. Le plongeur 70 est adapté à coulissement dans la carcasse d'enroulement 67 et une tige d'ouverture de contact forcée 96 partant de l'une des extrémités du plongeur 70 sort par la portion de petit diamètre 94 de la carcasse d'enroulement 67, de sorte qu'un collet 97 situé tout au bout de la tige 96 traverse une portion de grand diamètre de l'ouverture en forme de trou de serrure 62 et se place dans la fente de celle-ci. Le ressort de rappel 69 est comprimé entre le noyau de fer fixe 68 et le plongeur 70. Dans l'agencement ci-dessus, l'ensemble à électro-aimant 44, lorsqu'un courant nominal de l'enroulement 66 ou une surintensité y circule simplement, restreint le mouvement du plongeur 70 par la poussée du ressort de rappel 69, mais lorsqu'il circule un courant de court-circuit, le flux magnétique entre le noyau de fer fixe 68 et le plongeur 70 croît pour surmonter l'action du ressort de rappel 69, d'où s'ensuit que le plongeur 70 est attiré par le noyau de fer fixe 63 et qu'il s'en rapproche. De ce fait, la tige mobile 71 est poussée vers le plongeur 70 et elle s'avance à l'extérieur de l'ossature à profil en U 72, et le collet 97 de la tige d'ouverture de contact forcée 96 est retenu par la fente de l'ouverture 62, ce qui lui fait tirer la plaque de contact mobile 57.In addition, the cylinder head 65 is in one piece with a frame 79 intended to carry a mechanism 78 which will be described later. A side plate 82 of electrically conductive material, such as copper or a copper alloy, is placed upright and facing the other side plate 80 and it is fitted by square holes 83 on projections 81 of the frame with U-shaped profile 72, fixed by matting. The support plate 73 is bent at its lower end from which it extends to form an arc confinement plate 84, and the electromagnet assembly plunger type 44 is placed on a support base formed by the general casing 1, the arc confinement plate 84 coming into contact with the underside of the support base la so that the base la is taken between the electromagnet assembly 44 and the arc confinement plate 84. Two axes 87 and 88 for the mechanism 78 are arranged on either side of receiving bores 89 of the general casing 1 and of the inner casing 2 and on either side of receiving bores 90 of the general casing 1 and of the inner casing 2, and they penetrate by the bores 91 and 92 of the chassis 79 thus maintaining the chassis 79 and coming into abutment against the side plate 82 adjacent to the inner casing 2, so as to ensure the positioning of the cylinder head 65 and of the chassis 79. The fixed iron core 68 having a through hole 68a is adapted in a bore 93 at the bottom of the frame with a profile U 72 and crimped thereto by matting, the movable rod 71 being longer than the iron core 68 and being slidably inserted into the through bore 68a. The winding carcass 67 has at one of its ends a portion of smaller diameter 94 which fits in a fixing bore 95 formed in the support plate 73, and it is adapted at its other end on the core of fixed iron 68. The plunger 70 is adapted to slide in the winding carcass 67 and a forced contact opening rod 96 starting from one of the ends of the plunger 70 exits through the small diameter portion 94 of the carcass d winding 67, so that a collar 97 located at the very end of the rod 96 passes through a large diameter portion of the opening in the shape of a keyhole 62 and is placed in the slot thereof. The return spring 69 is compressed between the fixed iron core 68 and the plunger 70. In the above arrangement, the electromagnet assembly 44, when a nominal current of the winding 66 or an overcurrent y simply flows, restricts the movement of the plunger 70 by the thrust of the return spring 69, but when a short-circuit current flows, the magnetic flux between the fixed iron core 68 and the plunger 70 increases to overcome the action the return spring 69, from which follows that the plunger 70 is attracted by the fixed iron core 63 and that it approaches it. Therefore, the movable rod 71 is pushed towards the plunger 70 and it advances outside the U-shaped frame 72, and the collar 97 of the forced contact opening rod 96 is retained by the slot of the opening 62, which makes it pull the movable contact plate 57.

Comme visible sur les figures 5 et 6, la bilame 45 est incurvée approximativement en forme de L, et elle comprend un segment horizontal et un segment oblique, le segment oblique présentant à son extrémité supérieure une vis de réglage d'écartement 100 vissée dans celle-ci, le segment horizontal 98 présentant un trou de sertissage (non représenté) par lequel la bilame 45 est sertie par matage à l'extrémité inférieure de la plaque latérale 82, la bilame 45 et l'enroulement 66 étant reliés par un fil de cuivre flexible soudé 101, la plaque latérale 82 et la plaque de contact mobile 57 étant reliées par un fil de cuivre flexible soudé 102. Lorsqu'un courant traverse la bilame 45, celle-ci s'incurve en faisant s'écarter le segment oblique de l'ensemble de borne 20, le phénomène de courbure étant taré en sorte qu'il soit provoqué par une surintensité d'environ plusieurs fois l'intensité nominale.As can be seen in FIGS. 5 and 6, the bimetallic strip 45 is curved approximately in the shape of an L, and it comprises a horizontal segment and an oblique segment, the oblique segment having at its upper end a spacing adjustment screw 100 screwed into that -this, the horizontal segment 98 having a crimping hole (not shown) by which the bimetallic strip 45 is crimped by stamping at the lower end of the side plate 82, the bimetallic strip 45 and the winding 66 being connected by a wire welded flexible copper 101, the side plate 82 and the movable contact plate 57 being connected by a welded flexible copper wire 102. When a current crosses the bimetallic strip 45, the latter curves by causing the oblique segment to move apart of the terminal assembly 20, the curvature phenomenon being calibrated so that it is caused by an overcurrent of approximately several times the nominal intensity.

Dans l'agencement ci-dessus, l'ensemble de borne (21) du côté alimentation et l'ensemble de borne (20) du côté utilisation sont reliés par le fil de cuivre multibrins de connexion 56, la plaque de contact fixe 57, le fil de cuivre multibrins 102, la plaque latérale de châssis 82, la bilame 45, le fil de cuivre multibrins 101 et l'enroulement 26, dans cet ordre, et la commande d'enclenchement et de déclenchement est opérée par l'ensemble de contact 43. Pendant la coupure de court-circuit, la chambre d'extinction d'arc 51 permet à l'arc auquel donne naissance l'ensemble de contact 43 de quitter rapidement les contacts 46 et 47 et de disparaître, et elle comprend principalement un orifice d'évacuation 103, des plaques de confinement d'arc 84 et 104, une grille de déionisation 105 et une plaque d'évacuation 106. Lorsque les contacts 46 et 47, lors du court-circuit, se trouvent déconnectés pour donner naissance à un arc entre ceux-ci, comme le trajet de circulation du courant dont fait partie l'arc est conformé en U par la plaque de contact fixe 53, le contact fixe 46, l'arc, le contact mobile 47 et la plaque de contact mobile 57, il y a création d'une force électromagnétique qui pousse l'arc vers le côté de la grille 105. De ce fait, l'arc quitte les contacts 46 et 47, chemine sur les plaques de confinement d'arc 84 et 104, puis s'approche de la grille de déionisation 105 pour être attiré par celle-ci, y pénètre, est fragmenté et refroidi par la grille de déionisation 105, ce qui le conduit à s'éteindre, de sorte que le gaz qui en provient est évacué à l'extérieur par l'orifice d'évacuation 103.In the above arrangement, the terminal assembly (21) on the supply side and the terminal assembly (20) on the use side are connected by the multi-strand copper connection wire 56, the fixed contact plate 57, the multi-strand copper wire 102, the chassis side plate 82, the bimetallic strip 45, the multi-strand copper wire 101 and the winding 26, in this order, and the interlocking and tripping control is operated by the assembly of contact 43. During the short circuit cut-off, the arc extinguishing chamber 51 allows the arc to which the contact assembly 43 gives rise to quickly leave contacts 46 and 47 and to disappear, and it mainly comprises an evacuation orifice 103, arc confinement plates 84 and 104, a deionization grid 105 and an evacuation plate 106. When the contacts 46 and 47, during the short circuit, are disconnected to give birth to an arc between them, like the current flow path of which ie the arc is U-shaped by the fixed contact plate 53, the fixed contact 46, the arc, the movable contact 47 and the movable contact plate 57, there is creation of an electromagnetic force which pushes the arc towards the side of the grid 105. As a result, the arc leaves the contacts 46 and 47, travels on the arc containment plates 84 and 104, then approaches the deionization grid 105 to be attracted by the latter, enters it, is fragmented and cooled by the deionization grid 105, which leads it to extinguish, so that the gas which comes therefrom is evacuated outside by the evacuation orifice 103.

On va à présent donner des explications sur le mécanisme 78 d'enclenchement ou de coupure, de disjonction et de réenclenchement de l'équipage de contact mobile 43. Comme visible sur les figures 6 et 7, le mécanisme 78 comprend un élément de liaison de déclenchement 109, un élément de liaison de verrouillage 64, un élément de liaison de commande 110, une manette 111 et un ensemble à électro-aimant de commande 112, l'élément de liaison de déclenchement 109 comprenant un segment ascendant 113, un segment latéral 114 et un segment en forme d'oreille 115, le segment latéral 114 et le segment en forme d'oreille 115 présentant des trous d'axe respectifs 116, ce qui permet d'introduire un axe 87 dans les trous 91 du châssis latéral 79 et de la plaque latérale 82 du côté bilame 45 de ceux-ci, et de le monter pivotant à ses deux extrémités dans les trous de support 89 formés dans le carter général 1 et dans le carter intérieur 2. Comme visible sur les figures 5, 6 et 7, le segment ascendant 113 de l'élément de liaison de déclenchement 109 est positionné à l'extrémité inférieure en avant de la tige mobile 71 de l'ensemble à électro-aimant de type à plongeur 44 et à l'extrémité supérieure devant la vis de réglage d'écartement 100 de la bilame 45, le segment latéral 114 s'avançant en biais vers le haut et formant au flanc supérieur oblique de son extrémité une portion descendante en crochet 119 et à son bord supérieur une surface en arc de cercle 120. Un ressort de rappel hélicoïdal 121 est adapté sur l'axe 87 au niveau de l'élément de liaison de déclenchement 109, et il est retenu à l'une de ses extrémités 121a a contre le bord inférieur oblique du segment latéral 114, et retenu à son autre extrémité par venue en butée contre le segment supérieur de la culasse 65. De ce fait, l'élément de liaison de déclenchement 109 est sollicité angulairement dans le sens inverse des aiguilles d'une montre de la figure 5, et l'extrémité inférieure du segment ascendant 113 porte contre l'extrémité de la tige mobile 71 de façon à pouvoir être retenue contre la face saillante du noyau de fer fixe 68.We will now give explanations on the mechanism 78 for switching on or off, disjunction and resetting of the moving contact assembly 43. As can be seen in FIGS. 6 and 7, the mechanism 78 comprises a connecting element for trigger 109, a locking link member 64, a control link member 110, a lever 111 and a control solenoid assembly 112, the trigger link member 109 comprising an ascending segment 113, a side segment 114 and an ear-shaped segment 115, the lateral segment 114 and the ear-shaped segment 115 having respective axis holes 116, which makes it possible to introduce an axis 87 into the holes 91 of the lateral frame 79 and of the lateral plate 82 on the bimetal side 45 of these, and of mounting it pivoting at its two ends in the support holes 89 formed in the general casing 1 and in the internal casing 2. As visible in FIGS. 5, 6 and 7, the ascending segment 113 of the trigger linkage 109 is positioned at the lower end in front of the movable rod 71 of the plunger-type electromagnet assembly 44 and at the upper end in front of the spacing adjustment screw 100 of the bimetal strip 45, the lateral segment 114 advancing at an angle upwards and forming at the oblique upper flank of its end a descending hook portion 119 and at its upper edge a surface in an arc of a circle 120. A helical return spring 121 is fitted on the axis 87 at the level of the trigger connecting element 109 , and it is retained at one of its ends 121a against the oblique lower edge of the lateral segment 114, and retained at its other end by abutting against the upper segment of the cylinder head 65. As a result, the element trigger link 109 is biased angularly anti-clockwise in Figure 5, and the lower end of the ascending segment 113 bears against the end of the movable rod 71 so as to be able to be held against the protruding face of the iron core f ix 68.

L'élément de liaison de verrouillage 64 comprend une paire de segments latéraux allongés 122 et 123 raccordés par un segment formant pont 124 et il comporte des trous 125 dans lesquels s'engage un axe 88 qui est passé dans les trous 92 du châssis latéral 79 et de la plaque latérale 82 et qui est monté pivotant à ses deux extrémités dans les trous de support 90 du carter général 1 et du carter intérieur 2, l'axe 88 portant un ressort de rappel hélicoïdal 127. Le ressort hélicoïdal 127 est retenu à l'une de ses extrémités par le segment supérieur de la culasse 65 et à ses autres extrémités par les bords latéraux des segments latéraux 122 et 123, de sorte que l'élément de liaison de verrouillage 64 se trouve adapté à être sollicité angulairement dans le sens des aiguilles d'une montre de la figure 7 par la force de rappel du ressort 127 et à pouvoir être retenu à l'extrémité inférieure par le bord supérieur de la plaque support 73.The locking connecting element 64 comprises a pair of elongated lateral segments 122 and 123 connected by a bridge segment 124 and it has holes 125 in which engages an axis 88 which has passed through the holes 92 of the lateral chassis 79 and of the side plate 82 and which is pivotally mounted at its two ends in the support holes 90 of the general casing 1 and of the internal casing 2, the pin 88 carrying a helical return spring 127. The helical spring 127 is retained at one of its ends by the upper segment of the cylinder head 65 and at its other ends by the lateral edges of the lateral segments 122 and 123, so that the locking connecting element 64 is adapted to be biased angularly in the clockwise in FIG. 7 by the return force of the spring 127 and able to be retained at the lower end by the upper edge of the support plate 73.

L'extrémité supérieure de l'élément de liaison de verrouillage 64 s'entrecroise avec celle de l'élément de liaison de déclenchement 109, et un verrou 128 situé à l'extrémité inférieure du segment formant pont 124 se trouve placé au-dessus de la course angulaire de la portion en crochet 119 de l'élément de liaison de déclenchement 109. De ce fait, lorsque l'élément de liaison de verrouillage 64 tourne vers la gauche en opposition à la force de rappel du ressort hélicoïdal 127, le verrou 128 glisse sur la face en arc de cercle 120 de l'élément de liaison de déclenchement 109 en faisant ainsi tourner l'élément de liaison de déclenchement 109 vers la droite en opposition à la force de rappel du ressort hélicoïdal 127 et en lui faisant retenir le verrou 128 contre la portion formant crochet 119.The upper end of the locking link member 64 intersects with that of the trigger link member 109, and a latch 128 located at the bottom end of the bridge segment 124 is located above the angular travel of the hook portion 119 of the trigger connecting element 109. As a result, when the locking connecting element 64 turns to the left in opposition to the restoring force of the helical spring 127, the latch 128 slides on the arc-shaped face 120 of the trigger connecting element 109 thereby rotating the trigger connecting element 109 to the right in opposition to the restoring force of the helical spring 127 and making it retain the latch 128 against the hook portion 119.

En conséquence, l'élément de liaison de déclenchement 109 et l'élément de liaison de verrouillage 64 se trouvent placés dans l'état de réenclenchement, l'élément de liaison de déclenchement 109 étant maintenu dans la position en laquelle la vis de réglage de bilame 100 et la tige mobile 71 sont détectées par le segment ascendant 113. Lorsque l'élément de liaison de déclenchement 109 agit, l'élément de liaison de verrouillage 64 se trouve dégagé de celui-ci et placé dans l'état de déclenchement. De plus, l'axe 63 destiné à supporter l'équipage de contact mobile 43 est monté pivotant dans les trous 129 de l'extrémité inférieure de l'élément de liaison de verrouillage 64.As a result, the trigger link member 109 and the latch link member 64 are placed in the reset state, the trigger link member 109 being held in the position in which the adjustment screw bimetallic strip 100 and the movable rod 71 are detected by the ascending segment 113. When the trigger connecting element 109 acts, the locking connecting element 64 is released from it and placed in the triggering state. In addition, the pin 63 intended to support the movable contact assembly 43 is pivotally mounted in the holes 129 of the lower end of the locking connecting element 64.

La manette 111 est formée d'une matière isolante et elle est insérée dans une échancrure d'insertion de manette 130a de la plaque de dessus 11a du carter intérieur 2 et dans une fente d'insertion de manette 130b du couvercle supérieur 4 de façon à être supportée à rotation par un axe 131 pivotant dans des alésages 131a a du carter général 1 et du carter intérieur 2. De plus, la manette 111 porte des plaques indicatrices 111 b dont chacune est en arc de cercle partant de l'un des deux côtés de celle-ci, et elle est munie à son extrémité inférieure d'un alésage d'accouplement 133 et, du côté droit, d'un bras 134 s'avançant à peu près horizontalement, le bras 134 comportant un alésage d'accouplement de plongeur 135 (figure 8). Ainsi, lorsque le disjoncteur est enclenché par action sur la manette 111, une mention telle que "MARCHE" portée par la plaque indicatrice 111b apparaît dans la fente de manette 130b et, lorsque le disjoncteur est inopérant, une mention telle que "ARRET" est lisible sur la plaque indicatrice d'arrêt 111b, ce qui confirme l'état de marche ou d'arrêt du disjoncteur.The handle 111 is formed of an insulating material and it is inserted into a handle insertion notch 130a of the top plate 11a of the inner casing 2 and into a handle insertion slot 130b of the upper cover 4 so as to be rotatably supported by an axis 131 pivoting in bores 131a a of the general casing 1 and of the inner casing 2. In addition, the lever 111 carries indicator plates 111 b each of which is in an arc starting from one of the two sides thereof, and it is provided at its lower end with a coupling bore 133 and, on the right side, an arm 134 advancing approximately horizontally, the arm 134 having a coupling bore plunger 135 (Figure 8). Thus, when the circuit breaker is triggered by action on the handle 111, a statement such as "ON" carried by the indicator plate 111b appears in the handle slot 130b and, when the circuit breaker is inoperative, a statement such as "OFF" is readable on the stop indicator plate 111b, which confirms the on or off state of the circuit breaker.

L'élément de liaison ou biellette de commande 110 est formé d'une plaque à profil en H coudée des deux côtés dans 1e même sens, et elle comprend les deux segments latéraux 136 et un segment formant pont 137, les deux segments latéraux 136 étant accouplés à l'une de leurs extrémités à l'alésage d'accouplement 133 par un pivot 138 et à leur autre extrémité au pivot 60 supportant la plaque de contact mobile 57 et l'étrier de contact 58.The connecting element or control rod 110 is formed by an H-profile plate bent on both sides in the same direction, and it comprises the two lateral segments 136 and a bridge segment 137, the two lateral segments 136 being coupled at one of their ends to the coupling bore 133 by a pivot 138 and at their other end to the pivot 60 supporting the movable contact plate 57 and the contact bracket 58.

A présent, on fait tourner vers la droite la manette 111 de la figure 9 et on la place en position de marche, en poussant ainsi vers la gauche l'équipage de contact mobile 48 par l'intermédiaire de l'élément de liaison de commande 110. Comme l'élément de liaison de verrouillage 64 est verrouillé à l'élément de liaison de déclenchement 109, l'équipage de contact mobile 48 tourne autour de la tige 63 pour amener l'équipage de contact mobile 47 en contact avec le contact fixe 46. Lorsqu'on tourne davantage la manette 111 pour l'amener dans la position prédéterminée, le châssis mobile 57 tourne alors autour de la tige 60 du fait que les contacts 47 et 46 se trouvent tous deux en contact mutuel pour comprimer le ressort de compression 59, ce qui applique la pression de contact à l'ensemble de contact 43 et maintient le disjoncteur en position de marche grâce à l'ensemble à électro-aimant de commande 112 qui sera décrit plus loin. D'autre part, la figure 10 montre que la manette 11 est tournée vers la gauche et que le disjoncteur est coupé, l'équipage de contact mobile 48 tournant aussi dans le sens des aiguilles d'une montre sur la tige 63 du fait qu'il se trouve tiré à l'extrémité supérieure par l'élément de liaison de commande 110, ce qui déconnecte le contact mobile 47 du contact fixe 46 en mettant ainsi le disjoncteur à l'arrêt. L'opération de mise à l'arret, si elle a lieu après une opération de déclenchement, réenclenche l'élément de liaison de verrouillage 64. En d'autres termes, en l'absence de déclenchement, l'élément de liaison de verrouillage 64 est dégagé de l'élément de liaison de déclenchement 109 et le ressort 127 le fait tourner sur la tige 120 en le plaçant ainsi dans l'état représenté par les figures 11 et 12. Lorsque la manette 111 est tournée plus loin vers la gauche vers la position normale, l'élément de liaison de commande 110 se trouve tiré davantage pour soulever l'équipage de contact mobile 48 comme un tout en direction de la manette 111, ce qui fait tourner l'élément de liaison de verrouillage 64 vers la gauche sur la tige 126 en opposition à l'action du ressort 127, et le verrou 128 glisse le long de la surface en arc de cercle 120 de l'élément de liaison de déclenchement 109 pour être retenu dans la portion formant crochet 119.Now, the lever 111 of FIG. 9 is turned to the right and it is placed in the on position, thus pushing the movable contact assembly 48 to the left via the control link element. 110. As the locking connecting element 64 is locked to the triggering connecting element 109, the moving contact element 48 rotates around the rod 63 to bring the moving contact element 47 into contact with the contact fixed 46. When the lever 111 is further turned to bring it into the predetermined position, the movable frame 57 then rotates around the rod 60 because the contacts 47 and 46 are both in mutual contact to compress the spring compression 59, which applies the contact pressure to the contact assembly 43 and keeps the circuit breaker in the on position thanks to the control electromagnet assembly 112 which will be described later. On the other hand, FIG. 10 shows that the lever 11 is turned to the left and that the circuit breaker is cut, the moving contact assembly 48 also rotating in the direction of clockwise on the rod 63 because it is pulled at the upper end by the control link element 110, which disconnects the movable contact 47 from the fixed contact 46 thereby putting the circuit breaker to the 'stop. The shutdown operation, if it takes place after a triggering operation, resets the locking link element 64. In other words, in the absence of triggering, the locking link element 64 is released from the triggering connecting element 109 and the spring 127 rotates it on the rod 120 thereby placing it in the state shown in FIGS. 11 and 12. When the lever 111 is turned further to the left towards the normal position, the control link element 110 is pulled further to raise the movable contact assembly 48 as a whole in the direction of the lever 111, which turns the locking link element 64 towards the left on the rod 126 in opposition to the action of the spring 127, and the latch 128 slides along the surface in an arc of a circle 120 of the trigger connecting element 109 to be retained in the portion forming a hook 119.

Un ensemble de visualisation de déclenchement 139 opère une visualisation de déclenchement lorsque le disjoncteur est déclenché par un courant anormal, et il comprend une biellette de visualisation 139a et une tringle de conjugaison 139b, comme visible sur la figure 8, la biellette de visualisation 139a étant articulée à son extrémité inférieure à l'axe de manette 131 et présentant à son extrémité supérieure un secteur de visualisation de déclenchement (dont la surface porte une mention telle que "DECL") en arc de cercle. La tringle de conjugaison 139b comprend une tige coudée à ses deux extrémités dans le même sens, et elle se raccorde aux extrémités supérieures de la biellette de visualisation 139a et de l'élément de liaison de verrouillage 64. Dans l'état de réenclenchement, l'ensemble de visualisation de déclenchement 139 est rétracté de la position d'arrêt de la manette 111, comme représenté par les figures 14 et 10, mais, dans l'état de déclenchement, l'élément de liaison de verrouillage 64 tourne dans le sens des aiguilles d'une montre pour pousser la tringle de conjugaison 139b, et il fait tourner la biellette de visualisation 139a pour permettre ainsi au secteur de visualisation de déclenchement 139c de venir couvrir la plaque de visualisation de marche 111b (la manette 111 se trouvant toujours dans la position de marche). Il s'ensuit que la mention "DECL" portée par le secteur de visualisation de déclenchement 139c apparaît dans la fente 130b et que la mention "MARCHE" devient invisible.A trip display assembly 139 operates a trip display when the circuit breaker is tripped by an abnormal current, and it comprises a display link 139a and a conjugation rod 139b, as visible in FIG. 8, the display link 139a being articulated at its lower end to the lever axis 131 and having at its upper end a trigger display sector (the surface of which is marked as "DECL") in an arc. The conjugation rod 139b comprises a rod bent at its two ends in the same direction, and it is connected to the upper ends of the display link 139a and of the locking connecting element 64. In the reset state, the the trigger display assembly 139 is retracted from the stop position of the lever 111, as shown in FIGS. 14 and 10, but, in the triggered state, the locking connecting element 64 rotates in the direction clockwise to push the conjugation rod 139b, and it rotates the display link 139a so as to allow the trigger display sector 139c to come and cover the market display plate 111b (the lever 111 still being located in the on position). It follows that the mention "DECL" carried by the trigger display sector 139c appears in the slot 130b and that the mention "ON" becomes invisible.

Comme représenté par la figure 5, l'ensemble à électro-aimant de commande 112 est monté dans un logement 52 du carter général 1 de façon que le côté de sortie du plongeur 140 reste orienté vers le haut. Le plongeur 140 étant accouplé par son extrémité supérieure à un alésage d'accouplement de plongeur 135 de la manette 111 par l'intermédiaire d'une tige en U 141. De plus, l'ensemble à électro-aimant de commande 112 est de type polarisé bistable, et il comprend, comme visible sur la figure 8, une carcasse d'enroulement 143 ménageant un trou traversant rectangulaire 144 et des joues supérieure et inférieure 145 et 146, un enroulement 147, une paire d'éléments de culasse intérieurs 148 portant contre les deux flancs latéraux de la carcasse d'enroulement 143, une paire d'aimants permanents 149 (dont les pôles magnétiques sont représentés par N et S) attirés contre les surfaces extérieures des éléments de culasse intérieurs 148, et une paire d'éléments de culasse extérieurs attirés vers les flancs extérieurs des aimants permanents 149, respectivement. Le plongeur 140 passe dans l'alésage rectangulaire 144 de la carcasse d'enroulement 143, et il présente des joues 151 et 152 placées entre les éléments de culasse intérieurs 148 et les éléments de culasse extérieurs 150, respectivement. De la face supérieure de la joue 151 part un téton d'accouplement 153 qui présente à son extrémité supérieure un alésage d'engagement 153a dans lequel est reçue à pivotement la tringle en U 141. Un amortisseur 154 est interposé entre et au-dessous des extrémités inférieures des éléments de culasse extérieurs 150 afin d'amortir les déplacements du plongeur 140.As shown in FIG. 5, the control electromagnet assembly 112 is mounted in a housing 52 of the general casing 1 so that the outlet side of the plunger 140 remains oriented upwards. The plunger 140 being coupled by its upper end to a plunger coupling bore 135 of the handle 111 by means of a U-shaped rod 141. In addition, the assembly with control electromagnet 112 is of the type bistable polarized, and it comprises, as visible in FIG. 8, a winding carcass 143 providing a rectangular through hole 144 and upper and lower cheeks 145 and 146, a winding 147, a pair of inner yoke elements 148 bearing against the two lateral flanks of the winding carcass 143, a pair of permanent magnets 149 (whose magnetic poles are represented by N and S) attracted against the external surfaces of the internal cylinder head elements 148, and a pair of elements of outer yoke attracted to the outer sides of the permanent magnets 149, respectively. The plunger 140 passes through the rectangular bore 144 of the winding carcass 143, and it has cheeks 151 and 152 placed between the inner breech elements 148 and the outer breech elements 150, respectively. From the upper face of the cheek 151 leaves a coupling stud 153 which has at its upper end an engagement bore 153a in which the U-rod 141. is pivotally received. A damper 154 is interposed between and below the lower ends of the external cylinder head elements 150 in order to dampen the displacements of the plunger 140.

Vu que les aimants permanents 149, comme représenté par la figure 9, se font vis-a-vis par des pôles de même nom, les extrémités supérieures et inférieures 148a et 148b des éléments de culasse inférieurs 148 présentent toutes une aimantation de polarité S, et celles des éléments de culasse extérieurs 150 une aimantation de polarité N, et elles se font mutuellement face. De ce fait, les joues 151 et 152 du plongeur 140, lorsqu'elles sont placées comme représenté par l'une ou l'autre des figures 9 et 10, se trouvent attirées par les éléments de culasse 148 ou 150 et solidarisées à ceux-ci. Un ressort de rappel à compression 155 est interposé entre-le bras 135 la manette 11 et la carcasse d'enroulement 143, la force de rappel du ressort 155 étant plus faible que l'attraction vers le plongeur 140, mais agissant lorsque la manette 111 est placée en position de marche par manoeuvre manuelle ou par l'ensemble à électro-aimant 112, ce qui provoque aussitôt la séparation des contacts 46 et 47. Lorsque l'ensemble à électro-aimant 112 n'est pas excité, la mise en position de marche ou d'arrêt est effectuée par manoeuvre manuelle de la manette 111, ce qui fait descendre ou monter le plongeur 140 avec maintien de ce dernier dans la position inférieure ou supérieure par la force magnétique des aimants permanents 149, ce qui maintient la manette 111 dans sa position de marche ou d'arrêt. De ce fait, l'équipage de contact mobile 48 est maintenu en contact avec le contact fixe 46 avec pression de contact comme représenté par la figure 14 ou dans l'état ouvert de la figure 10. D'autre part, entre la borne de commande 22 et une extrémité de l'enroulement 147 sont insérés une paire de diodes redresseuses 56 et 57 et un ensemble à contacts de commutation 158, représentés par la figure 14, ce qui permet d'alimenter l'ensemble à électro-aimant 112 en courant alternatif. Ces composants sont disposés dans une cavité formée entre le carter intérieur 2 et le carter latéral 3 et au flanc du carter intérieur 2. En premier lieu, un étrier de contact fixe à profil en U 160 est adapté sur une saillie fixe 161 et une paire de lames de contact de commutation 162 et 163 sont portées par des fentes 165a et 165b d'une saillie de support 164 faisant face à la saillie 165 avec pincement de façon à venir en contact avec l'étrier de contact fixe 160 aux surfaces supérieure et inférieure de celui-ci respectivement. Un alésage 166 dans un arc de cercle est formé entre la saillie fixe 161 et la saillie de support 164, et un levier de commande de contacts de commutation 167 formé d'un côté du bras 134 de la manette 111 et formant un seul tenant avec le bras 134 perfore l'alésage 166 pour être positionné entre les contacts de commutation 162 et 163, de sorte que lorsque la manette 111 est en position de marche (figure 9), le levier 167 sépare la lame de contact de commutation inférieure 163 de la lame de contact fixe 160, et que, lorsqu'elle est en position d'arrêt (figure 10), il sépare la lame de contact de commutation supérieure 162 de celle-ci. Les extrémités de l'enroulement 147 sont reliées à la lame de contact fixe 160 et à l'une des bornes de commande 22 et les diodes 156 et 157 sont reliées par l'une de leurs extrémités à la paire de lames de contact mobiles 162 et 163 de façon que leurs polarités sont mutuellement contraires et par leur autre extrémité à l'autre borne de commande 22, comme représenté par la figure 14. Sur la figure 14, le repère numérique 167 désigne une source d'alimentation à courant alternatif et le repère numérique 168 un inverseur extérieur. Par exemple, lorsque l'inverseur extérieur est en position active, un courant unidirectionnel circule dans l'enroulement 147 en traversant la diode 156, de sorte que le plongeur 140 passe de la position haute de la figure 10 à la position basse de la figure 9 et y reste maintenu, avec descente simultanée du levier de commande 167, ce qui provoque le collage de la lame de contact mobile 162 avec la lame de contact fixe 160 et sa séparation d'avec la lame de contact mobile 163 pour maintenir l'ensemble à électro-aimant 112 dans l'état représenté par la figure 14(b). Par contre, lorsque l'on veut mettre le disjoncteur hors circuit, l'inverseur extérieur 168 est placé en position inactive et l'enroulement 147 est excité en sens inverse pour faire monter le plongeur 140 et amener la manette 111 en position d'arrêt, ce qui fait commuter au levier 167 les lames de contact mobiles 162 et 163. En outre, dans l'état de déclenchement précité, l'élément de liaison de verrouillage 64 est dégagé de l'élément de liaison de déclenchement 109 et il pivote sous l'action du ressort 127 comme représenté par les figures 11 et 12, d'où s'ensuit que le pivot 63 tourne et que l'équipage de contact mobile 48 tourne sur l'axe 138 sous l'action de l'élément de liaison de commande 110. De ce fait, le contact mobile 47 se trouve séparé du contact fixe 46 sans actionnement du plongeur 153 de l'ensemble à électro-aimant 112 ni de la manette 111, ce qui exécute l'opération sans déclenchement de séparation du contact mobile 47 d'avec le contact fixe 46.Since the permanent magnets 149, as shown in FIG. 9, are made opposite by poles of the same name, the upper and lower ends 148a and 148b of the lower yoke elements 148 all have magnetization of polarity S, and those of the outer yoke elements 150 have a magnetization of polarity N, and they face each other. As a result, the cheeks 151 and 152 of the plunger 140, when they are placed as represented by one or the other of FIGS. 9 and 10, are attracted by the cylinder head elements 148 or 150 and secured to them. this. A compression return spring 155 is interposed between the arm 135, the lever 11 and the winding carcass 143, the return force of the spring 155 being weaker than the attraction towards the plunger 140, but acting when the lever 111 is placed in the on position by manual operation or by the electromagnet assembly 112, which immediately causes the separation of the contacts 46 and 47. When the electromagnet assembly 112 is not energized, setting on or off position is effected by manual operation of the lever 111, which causes the plunger 140 to descend or rise with the latter maintained in the lower or upper position by the magnetic force of the permanent magnets 149, which maintains the lever 111 in its on or off position. As a result, the moving contact assembly 48 is kept in contact with the fixed contact 46 with contact pressure as shown in FIG. 14 or in the open state of FIG. 10. On the other hand, between the terminal of control 22 and one end of the winding 147 are inserted a pair of rectifier diodes 56 and 57 and a contact assembly switch 158, shown in Figure 14, which supplies the electromagnet assembly 112 with alternating current. These components are arranged in a cavity formed between the inner casing 2 and the lateral casing 3 and on the side of the inner casing 2. First, a fixed contact stirrup with U-profile 160 is fitted on a fixed projection 161 and a pair of switching contact blades 162 and 163 are carried by slots 165a and 165b of a support projection 164 facing the projection 165 with pinching so as to come into contact with the fixed contact bracket 160 on the upper surfaces and lower of it respectively. A bore 166 in an arc is formed between the fixed projection 161 and the support projection 164, and a switching contact control lever 167 formed on one side of the arm 134 of the lever 111 and forming a single piece with the arm 134 perforates the bore 166 to be positioned between the switching contacts 162 and 163, so that when the lever 111 is in the operating position (FIG. 9), the lever 167 separates the lower switching contact blade 163 from the fixed contact blade 160, and that, when it is in the stop position (FIG. 10), it separates the upper switching contact blade 162 from the latter. The ends of the winding 147 are connected to the fixed contact blade 160 and to one of the control terminals 22 and the diodes 156 and 157 are connected by one of their ends to the pair of movable contact blades 162 and 163 so that their polarities are mutually opposite and by their other end to the other control terminal 22, as shown in FIG. 14. In FIG. 14, the reference numeral 167 denotes an AC power source and the reference numeral 168 an external inverter. For example, when the external inverter is in the active position, a unidirectional current flows in the winding 147 passing through the diode 156, so that the plunger 140 passes from the high position of FIG. 10 to the low position of the FIG. 9 and remains held there, with simultaneous descent of the control lever 167, which causes the movable contact blade 162 to stick with the fixed contact blade 160 and to separate from the movable contact blade 163 to maintain the electromagnet assembly 112 in the state shown in Figure 14 (b). On the other hand, when the circuit breaker is to be turned off, the external inverter 168 is placed in the inactive position and the winding 147 is excited in the opposite direction to cause the plunger 140 to rise and bring the lever 111 to the stop position. , which causes the movable contact blades 162 and 163 to switch to the lever 167. Furthermore, in the aforementioned triggering state, the locking connecting element 64 is released from the triggering connecting element 109 and it pivots under the action of the spring 127 as shown in FIGS. 11 and 12, from which follows that the pivot 63 rotates and that the movable contact assembly 48 rotates on the axis 138 under the action of the element control link 110. As a result, the movable contact 47 is separated from the fixed contact 46 without actuation of the plunger 153 of the electromagnet assembly 112 or of the lever 111, which performs the operation without triggering separation of the movable contact 47 from the fixed contact 46.

La forme de réalisation ci-dessus constitue un dispositif à trois fils. Dans le cas d'un dispositif à deux fils, comme représenté par la figure 15, il suffit à la borne de commande d'être reliée en commun aux diodes 156 et 157 et à l'inverseur extérieur 168 d'être muni d'une paire de diodes 169 et 170, et le principe de fonctionnement est le même que celui du dispositif à trois fils. De plus, il est évident qu'une tension continue est appliquée pour exciter l'ensemble à électro-aimant 112.The above embodiment constitutes a three-wire device. In the case of a two-wire device, as shown in FIG. 15, it is sufficient for the control terminal to be connected in common to the diodes 156 and 157 and for the external inverter 168 to be provided with a pair of diodes 169 and 170, and the operating principle is the same as that of the three-wire device. In addition, it is obvious that a direct voltage is applied to excite the electromagnet assembly 112.

De plus, un bouton d'essai de déclenchement 171 représenté sur le dessin permet avantageusement de vérifier le fonctionnement de déclenchement du mécanisme 78, en pivotant pour pousser par son extrémité inférieure 171 a le segment latéral oblique 114 de l'élément de liaison de déclenchement 109, ce qui fait tourner vers la droite l'élément de liaison de déclenchement 109 en le dégageant de l'élément de liaison de verrouillage 64 pour exécuter ainsi l'opération de déclenchement.In addition, a trigger test button 171 shown in the drawing advantageously makes it possible to verify the triggering operation of the mechanism 78, by pivoting to push from its lower end 171 to the oblique lateral segment 114 of the trigger linkage element. 109, which rotates the trigger linkage member 109 to the right by disengaging it from the locking linkage member 64 to thereby perform the triggering operation.

La forme de réalisation que l'on vient de décrire constitue un disjoncteur de configuration unipolaire. Dans un cas où l'on a besoin d'une multiplicité de pôles, il est fait appel au moyen classique de juxtaposition des pôles de construction sensiblement similaire, ceci réalisant un disjoncteur multipolaire.The embodiment which has just been described constitutes a circuit breaker of single-pole configuration. In a case where there is a need for a multiplicity of poles, use is made of the conventional means of juxtaposition of poles of substantially similar construction, this producing a multipole circuit breaker.

Dans ce cas, un enroulement 147 de chaque pôle à l'ensemble à électro-aimant 112 est connecté mutuellement en série et la borne de commande 22 n'est utilisée que pour un pôle, de sorte qu'un signal de commande est donné à la borne de commande 22, en permettant ainsi aux ensembles à électro-aimant 112 d'être commandés simultanément.In this case, a winding 147 of each pole to the electromagnet assembly 112 is mutually connected in series and the control terminal 22 is used only for one pole, so that a control signal is given to the control terminal 22, thereby allowing the electromagnet assemblies 112 to be controlled simultaneously.

On va à présent exposer sommairement le fonctionnement du disjoncteur à télécommande selon l'invention. Le disjoncteur en position de marche est représenté par les figures 9 et 13-(a), où l'élément de liaison de verrouillage est verrouillé par l'élément de liaison de déclenchement 109, la manette 111 est tournée vers la droite pour mettre en contact l'équipage de contact mobile 48 avec le contact fixe 46, et le plongeur 140 de l'ensemble à électro-aimant de commande 112 se meut vers le bas pour être retenu par les aimants permanents 149, ce qui maintient la manette 111 et l'équipage de contact mobile 48 dans la position de marche. De plus, cette opération de mise en position de marche englobe la manoeuvre directe de la manette 111 et la poussée vers le bas du plongeur 140 par le signal fourni à la borne de commande 22.We will now briefly outline the operation of the remote control circuit breaker according to the invention. The circuit breaker in the operating position is represented by FIGS. 9 and 13- (a), where the locking connecting element is locked by the tripping connecting element 109, the lever 111 is turned to the right to set contact the moving contact assembly 48 with the fixed contact 46, and the plunger 140 of the control electromagnet assembly 112 moves downward to be retained by the permanent magnets 149, which maintains the lever 111 and the moving contact assembly 48 in the on position. In addition, this operation for placing in the running position includes the direct operation of the lever 111 and the downward thrust of the plunger 140 by the signal supplied to the control terminal 22.

Les figures 13-(b) et 10 représentent le disjoncteur dans la position d'arrêt, dans laquelle l'élément de liaison de verrouillage 64 est verrouillé comme précédemment, d'où s'ensuit que la manette 111 est tournée vers la gauche et que l'équipage de contact mobile 48 est en position de coupure. De plus, le plongeur 140 de l'ensemble à électro-aimant de commande 112 est immobilisé en position haute. La relation fonctionnelle et le mode de fonctionnement sont les mêmes que dans la position de marche précitée.Figures 13- (b) and 10 show the circuit breaker in the off position, in which the locking connecting element 64 is locked as before, hence that the lever 111 is turned to the left and the moving contact assembly 48 is in the cut-off position. In addition, the plunger 140 of the control electromagnet assembly 112 is immobilized in the high position. The functional relationship and the operating mode are the same as in the aforementioned operating position.

Les figures 13-(c) et 11 représentent une situation de déclenchement par surintensité. Sur la figure 9, lorsque la surintensité traverse le circuit, la bilame 45 s'échauffe pour pousser graduellement l'élément de liaison de déclenchement 109 et l'élément de liaison de verrouillage 64 est dégagé et pivote, ce qui fait descendre le pivot 63 de l'équipage de contact mobile et, comme la manette 111 est immobilisée par le plongeur 140, le contact mobile 47 se trouve séparé du contact fixe 46, en coupant ainsi le circuit. Comme indique plus haut, l'opération de réencienchement après déclenchement est effectuée en faisant tourner la manette 111 pour la faire passer de la position de la figure 11 à la position d'arrêt, dans laquelle l'élément de liaison de commande 110 tire l'équipage de contact mobile 48 vers le haut de sorte que l'élément de liaison de verrouillage 64 tourne dans le sens contraire des aiguilles d'une montre pour verrouiller le verrou 128 à la portion formant crochet 119 de l'élément de liaison de déclenchement 109. Bien entendu, des signaux sont susceptibles d'être fournis aux bornes de commande 15 et 16 pour actionner l'ensemble à l'électro-aimant 112 en lui faisant amener la manette 111 dans sa position d'arret.Figures 13- (c) and 11 show a tripping situation by overcurrent. In FIG. 9, when the overcurrent crosses the circuit, the bimetallic strip 45 heats up to gradually push the trigger connecting element 109 and the locking connecting element 64 is released and pivots, which lowers the pivot 63 of the moving contact assembly and, as the lever 111 is immobilized by the plunger 140, the moving contact 47 is separated from the fixed contact 46, thereby cutting the circuit. As indicated above, the resetting operation after triggering is carried out by rotating the lever 111 to move it from the position in FIG. 11 to the stop position, in which the control link element 110 pulls moving contact assembly 48 upward so that the locking link member 64 rotates counterclockwise to lock the lock 128 to the hook portion 119 of the trigger link member 109. Of course, signals are likely to be supplied to the control terminals 15 and 16 to actuate the assembly with the electromagnet 112 by causing it to bring the lever 111 into its stopped position.

Le déclenchement par courant de court-circuit est représenté par les figures 13-(d) et 12. Lorsque le disjoncteur étant en position de marche un courant de court-circuit traverse le circuit, le plongeur 96 de l'ensemble à électro-aimant 44 se trouve attiré par le noyau de fer fixe 68, de sorte que la tige mobile 71 sort en poussant l'extrémité inférieure de l'élément de liaison de déclenchement 109 et en faisant pivoter l'élément de liaison de déclenchement 109, ce qui dégage l'élément de liaison de verrouillage 64 pour donner lieu à la séparation de l'équipage de contact mobile 48 d'avec le contact fixe 46. Cependant, avant que l'équipage de contact mobile 48 se trouve placé en coupure par le processus de transmission ci-dessus considéré le collet 97 de la tige d'ouverture forcée 96 porte contre la plaque de contact 57 en quasi- simultanéité avec l'actionnement du plongeur 70, ce qui lui fait tirer la plaque de contact 57 en provoquant la séparation du contact mobile 47 d'avec le contact fixe 46. En d'autres termes, immédiatement avant le déclenchement de l'élément de liaison de verrouillage 64, la plaque de contact 57 pivote sur l'axe 60 pour comprimer le ressort d'application de pression de contact 59 pour séparer ainsi le contact mobile 47 du contact fixe 46.Tripping by short-circuit current is shown in Figures 13- (d) and 12. When the circuit breaker is in the on position, a short-circuit current flows through the circuit, the plunger 96 of the electromagnet assembly 44 is attracted to the fixed iron core 68, so that the movable rod 71 comes out by pushing the lower end of the trigger link element 109 and by pivoting the trigger link element 109, which releases the locking connecting element 64 to give rise to the separation of the movable contact assembly 48 from the fixed contact 46. However, before the movable contact assembly 48 is cut off by the process transmission above considered the collar 97 of the forced opening rod 96 bears against the contact plate 57 almost simultaneously with the actuation of the plunger 70, which causes it to pull the contact plate 57 causing separation of mobile contact 47 with the cont fixed act 46. In other words, immediately before the triggering of the locking connecting element 64, the contact plate 57 pivots on the axis 60 to compress the contact pressure application spring 59 to thereby separate the movable contact 47 of the fixed contact 46.

Au cours de l'opération de déclenchement ci-dessus, la biellette de visualisation 139a pivote de concert avec l'élément de liaison de verrouillage 64, et le secteur de visualisation de déclenchement 139c vient couvrir le secteur de visualisation de marche 111b pour opérer la visualisation de déclenchement.During the above triggering operation, the display link 139a pivots in concert with the locking connecting element 64, and the triggering display sector 139c covers the walking display sector 111b to operate the trigger display.

Il ressort de ce qui précède que le disjoncteur à télécommande selon l'invention est agence en sorte que l'élément de liaison de déclenchement 109 et l'élément de liaison de verrouillage 64 sont munis de ressorts de rappel et verrouillés respectivement et que le maintien en position de marche et en position d'arrêt de l'équipage de contact mobile supporté par l'élément de liaison de verrouillage 64 dépend de l'ensemble à électro-aimant polarisé de type bistable, ce qui est avantageux en ceci que l'électro-aimant peut être de dimensions réduites et qu'une économie de consommation d'énergie est réalisée comparativement au disjoncteur classique, et aussi que la mise en oeuvre d'un électro-aimant unique peut miniaturiser considérablement le disjoncteur.It follows from the above that the remote control circuit breaker according to the invention is arranged so that the trigger connecting element 109 and the locking connecting element 64 are provided with return springs and locked respectively and that the maintenance in the on and off position of the movable contact assembly supported by the locking connecting element 64 depends on the polarized electromagnet assembly of the bistable type, which is advantageous in that the electromagnet can be reduced in size and an energy consumption saving is achieved compared to the conventional circuit breaker, and also that the implementation of a single electromagnet can significantly miniaturize the circuit breaker.

Claims (4)

1. A remote control circuit breaker provided with a body casing (1), a pivoting handle (111) linked on the one hand to the plunger of an electromagnet (112) for the remote operation and, on the other hand, through an operating link (110), to a mowable contactor (48) and to a latch link or stop pawl (64), rotatably mounted and the free end of which engages, in the OFF state, with a trip link element or trip pawl (109) which is pivotable by means of an excess current detector (44, 45) against the load of a return spring (121) to unlatch the stop pawl (64) the pivoting movement of which triggers the separation of the mowable contact (47) of the mowable contactor (48) from the corresponding stationary contact (45), characterized in that the electromagnet is a bistable polarized electromagnet (112) in that when pivoting to the ON position, handle (111) urges a return compression spring (155) the return force of which is less than the hold force of the electromagnet in its inactivated state, in that the stop pawl (64) is pivotally mounted on a fixed axis (88) within the body casing (1) and is hinged, by means of its end spaced from the trip pawl (109) to the mowable contactor (48) which is hinged on the operating link (110), the stop pawl (64) engaging the mowable contactor (48) between its end bearing the mowable contact (47) and its end hinged on the trip link (110) and being urged by a spring (127) in the mowable contact or (48) opening direction.
2. Circuit breaker according to claim 1, characterized in that said handle (111) is provided with, at a lengthwise intermediary portion thereof coincident with a cut-out (130a) of an inner casing (2) arcuate ON and OFF-display plates (111b) and with a trip display unit (139) associated with said latch link (64), and mowable toward the position for covering said ON-display plate.
3. A remote control system circuit breaker according to claim 2, characterized in that said trip display member (139) comprises a display link (139a) forming at the upper end thereof a trip display portion in a circular arc and pivoted at the lower end to a handle shaft (131) and an interlocking link (139b) connecting said display link and the upper end of said latch link (64), so that during the trip condition of said latch link (64) said display link (139a) in response to movement of said latch link (64) moves said trip display portion onto said. ON-display portion at said handle.
4. A remote control system circuit breaker according to claim 1, wherein said operating electromagnet unit (112) is provided with terminals for connecting said unit in series with other polar units when juxtaposed in use for multipolar circuit breaker.
EP83900440A 1982-01-29 1983-01-29 Remote-controllable circuit breaker Expired EP0103022B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP57013983A JPS58131636A (en) 1982-01-29 1982-01-29 Remote control type circuit breaker
JP13983/82 1982-01-29

Publications (3)

Publication Number Publication Date
EP0103022A1 EP0103022A1 (en) 1984-03-21
EP0103022A4 EP0103022A4 (en) 1987-01-20
EP0103022B1 true EP0103022B1 (en) 1989-07-12

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US (1) US4529951A (en)
EP (1) EP0103022B1 (en)
JP (1) JPS58131636A (en)
DE (1) DE3328926C2 (en)
GB (1) GB2129220B (en)
WO (1) WO1983002680A1 (en)

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Also Published As

Publication number Publication date
GB2129220B (en) 1985-12-11
JPS58131636A (en) 1983-08-05
GB2129220A (en) 1984-05-10
EP0103022A4 (en) 1987-01-20
JPH0158611B2 (en) 1989-12-12
GB8322699D0 (en) 1983-09-28
DE3328926T1 (en) 1984-02-09
WO1983002680A1 (en) 1983-08-04
DE3328926C2 (en) 1985-10-17
EP0103022A1 (en) 1984-03-21
US4529951A (en) 1985-07-16

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