CN103903925A - Thermal, magnetic subassembly for a selective circuit-breaker - Google Patents
Thermal, magnetic subassembly for a selective circuit-breaker Download PDFInfo
- Publication number
- CN103903925A CN103903925A CN201310757446.4A CN201310757446A CN103903925A CN 103903925 A CN103903925 A CN 103903925A CN 201310757446 A CN201310757446 A CN 201310757446A CN 103903925 A CN103903925 A CN 103903925A
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- Prior art keywords
- yoke
- blade
- contact
- arm
- electric wiring
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- 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
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/2472—Electromagnetic mechanisms with rotatable armatures
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- 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
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/30—Electromagnetic mechanisms having additional short-circuited winding
-
- 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
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/40—Combined electrothermal and electromagnetic mechanisms
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
- Electromagnets (AREA)
Abstract
The apparatus has a contact carrier (6) attached to a yoke (5) and carrying a movable contact (14). A coil (11) surrounds a portion of the yoke, and connected in series with a bimetallic strip (1). A blade (7) is rotated relative to the yoke and connected with pole surfaces of the yoke during short circuit. The yoke comprises a positioning and guiding unit for the blade. A drive unit is formed between the blade and the carrier for establishing correspondence between fraction of rotational movement of the blade and fraction of rotational movement of the movable contact. An independent claim is also included for a method for assembling a magnetic thermal sub-assembly integrated in an electrical apparatus.
Description
Technical field
The present invention relates to the hot assembly of a kind of magnetic, be used in circuit breaker, can overvoltage and short circuit for the protection of electric wiring and/or equipment, its about prevent from connecting upstream and/overvoltage in downstream and the system of short circuit are optionally.
Background technology
In distributing installation, the circuit breaker of the type is especially as the group's circuit breaker that is arranged on upstream from different circuit, and each circuit is protected by line-breaker.
The selectivity of the circuit breaker being connected in series is necessary or is at least desirable in compartment system, thereby the in the situation that of short circuit or overvoltage, turns off the minimum possible part of compartment system, that is, and and short circuit or cause the position at overvoltage place.
The circuit breaker of the type comprises main current circuit, in main current circuit, be mounted with: magnetic actuator and thermal actuator, magnetic actuator response short circuit and directly acting on is placed in the opening of contact of arc control device, and thermal actuator responds overvoltage and acts on the opened lock that can open successively contact.
Can be by auxiliary current circuit temporarily to the power supply of this main circuit, auxiliary current circuit comprises that same purpose is in another thermal actuator of opened lock that can open successively contact, current-limiting resistance is placed in described auxiliary circuit in order to time delay to be provided.
In the time of normal operation, the normal discharge of the electric current main circuit of flowing through.The electric current auxiliary circuit of simultaneously flowing through, but very faint due to the existence of resistance.If be short-circuited, magnetic triggers and occurs, and cuts off main current circuit, and only have the electric current significantly reducing by resistance to flow through auxiliary circuit by opening main moving contact.
This allows to continue safely equipment power supply downstream, and the circuit breaker of this circuit going wrong to cut-out has reserved the time, and whole circuit is unaffected.If this defect continues, after especially depending on certain blink of resistance, although by resistance limits electric current, the heat that causes auxiliary circuit is triggered, thus open the lock of circuit breaker and cut off the electric current of whole device.Necessary manually replacement circuit breaker after confirmation and repair-deficiency, or make defect line insulation.The in the situation that of very short in the defect duration, for example line downstream circuit breaker once in a while when switch, the magnetic device of selectivity circuit breaker is got back to its neutral and main circuit and is restored and do not trigger its opened lock.
This selector switch is especially known in DE102008021768, in the time detecting defect, for example, the in the situation that of short circuit, allows temporarily to disconnect main circuit contact by the switching on action and the auxiliary circuit of magnetic device.More specifically, form magnetic device with fixing core assembly traditionally, under the solenoidal effect that described core can pass at short circuit current by translation in the yoke of magnetic actuation, the core of described movement drives and makes striker (striker) translation, in the time driving moving contact frame, striker clashes into the lever (lever) of pivotable, opens with respect to determining contact thereby make described moving contact.
But this switch has a lot of shortcomings, especially aspect insulation.In fact, in fact the internal configurations of magnetic thermal actuator causes two groups of parts with different potentials, and the parts that are electrically connected to each other in every group form current path.
On the one hand, the first group of being made up of yoke, lever, spring, moving contact and braid forms the current path with the first current potential.
On the other hand, by determining second group of forming position that contact, solenoid and terminal form current path at the second current potential.
Different potentials between two current paths is problem place, because its requires to belong to not between parts on the same group and insulate in principle.But parts are mixed in circuit breaker also mutually close each other, and current path is in fact repeatedly crossing, and be difficult to ensure has this insulation in same circuit breaker.
The solution adopting in this file DE102008021768 is included in and in two groups of parts, integrates a lot of plastic insulation parts.These parts shape very complicated and that need loaded down with trivial details evolution can surround the parts that will protect to have is easy to be incorporated in circuit breaker simultaneously, and in circuit breaker, free space is limited, and therefore required compactedness is provided.
These complicated plastic parts have also produced the whole manufacture of can not ignore and the assembly cost economically with respect to circuit breaker, can not ensure that in addition failure risk can disappear.
The present invention is by proposing a kind of compact above-mentioned various shortcomings of technical scheme solution without any failure risk that are easy to manufacture and ensure.
Finally, the thinking of the solution based on proposing is a kind of new configuration in circuit breaker of design, according to this configuration, belongs to the heat of main circuit and all parts formation single circuit path of magnetic actuator and is therefore in same potential.
Summary of the invention
Therefore, the present invention relates to a kind of electric wiring protection equipment of selectivity circuit breaker type, it comprises assembly, and described assembly comprises:
-magnetic actuator, can there is short circuit in the circuit that will protect time, at least one moving contact is separated with determining contact, and described magnetic actuator comprises fixing yoke;
-the thermal actuator (thermal activator) that formed by bimetal leaf, the mechanical lock of opening device when overload can appear in this thermal actuator in the circuit that will protect;
This equipment is characterised in that, described magnetic actuator also comprises:
-contact rack, this contact rack can be pivotally fixed in yoke and support moving contact;
-coil, this coil is around the described yoke of part and be in series with bimetal leaf;
-can be with respect to the blade (vane) of described yoke rotation, this blade can be in the time of short circuit extremely contacts on surface with at least one of described yoke, and described yoke is provided with the device for locating and guide moving blade;
-for recalling the device of blade and contact rack, set up the calibration of the activation threshold value of magnetic actuator;
-drive unit between blade and contact rack is set up directly corresponding between at least a portion rotatablely moving of blade and at least a portion rotatablely moving of moving contact.
Configure especially according to this, all parts are electrically connected to each other and in same potential, no longer have any constraint that relates to electric insulation.The ambroin part that therefore no longer need to adopt in the solution of prior art.
In addition, because the hot assembly of this magnetic comprises only about half of parts, the hot assembly of this magnetic has been simplified to a great extent with respect to prior art.With respect to described prior art, this is especially real, because mobile core, striker (striker) and lever (1ever) are by single part, moving blade substitutes.
The advantage that it also has is rodability because it on production line, be incorporated among the monolithic of selective circuit breaker.
Parts are specifically designed to relative refining, thereby it is easily manufactured.Magnetic assembly of the present invention be also easier to assembling, and can be automation, these possibilities are being very attractive saving aspect cost.
According to a kind of possible configuration, described return mechanism can comprise the spring of spiral stretching spring type, and its first outstanding projection of end by the blade contiguous joint pin from it is connected to second projection outstanding from contact rack.
Therefore, this spring can return to blade neutral (idle position), and contact rack is returned to the off-position of contact.This spring is also held in place blade with respect to yoke, and maintains the moving contact of determining between contact.
In addition, described drive unit can comprise blade its joint pin of extension near-end and towards the arm of contact rack bending, can with contact and be bearing in small pieces from the outstanding small pieces of contact rack.
In the time of normal operation, when nominal current is during through coil, the magnetic field that coil causes in yoke produces the magnetic force of blade being guided into yoke, and this magnetic force spring that do not suffice to counterbalance maintains the power of blade and is not enough to attract the latter that it is contacted with surface extremely.Therefore, blade is in neutral and is regained slightly with respect to the extremely surface of yoke, and moving contact with determine contact and contact.In the position separately of these blades and contact rack, between blade arm and the small pieces of contact rack, have play (play).
In the time of short circuit current process coil, the magnetic field that the latter causes in yoke is obviously enough to guide blade into yoke against the power of spring.The attraction of blade is greater than the power of spring, and blade starts the extremely surperficial pivotable towards yoke.Its arm contacts with the small pieces of contact rack, moving determine contact and remains and close.Blade continues pivotable until it is pressed against on the extremely surface of yoke.In the time of this pivoting action, the arm of blade by it with the small pieces of contact rack contact, order about contact rack turns clockwise and therefore the static state of contact open.Moving contact with determine that contact separates and and be brought to static state and open distance with respect to determining contact.Next moving contact continues to turn clockwise until relatively determine contact dynamic opening distance under the impact of its inertia, and then its small pieces no longer contact with the arm of blade.Finally, due to the attraction of spring action on contact rack, pivotable that the latter is counterclockwise is opened distance until its small pieces contact again with the arm of blade and be again positioned at the static state of relatively determining contact against, moving contact.Magnetic actuator is retained on this trigger position until short circuit disappears or until equipment opened by mechanical opened lock.
In this case, the attraction of blade being guided into yoke being caused by coil is less than the power of spring again, and blade is got back to its neutral, thereby allows contact rack counterclockwise pivotable under the attraction effect of spring, determines on contact until moving contact is resisted against.Magnetic actuator is again on initial position.
Therefore the selection of spring is for ensureing that the triggering at specific currents scope inner breaker is most important.In fact, the spring resistance of closing of obstruction blade is conclusive for limiting activation threshold value.
According to a kind of possible configuration, described contact rack comprises the surface and the braid that is connected to bimetal leaf for fixing moving contact, extend two side sides of part of joint pin by described the second projection and the supports contacts frame by covering yoke, described side has two inside and is inserted with the hole of the joint pin of contact rack, and described small pieces and another one side that one of them of described side has for engaging with blade have the shape engaging with device lock.
An important advantage of the present invention is that described yoke is equipped with phase shift ring, and described phase shift ring is curling on the end of described yoke.
This phase shift ring is also called as shading ring (shading ring), when alternating current is playing an important role aspect the motion of blade during by coil.In the time that short circuit occurs, in situation without phase shift ring, the magnetic attraction of blade being guided into yoke that the coil of being powered by alternating current produces will be less than near the spring restoring force of each by 0 between two half periods, cause that the of short duration of blade open, and therefore cause the too early wearing and tearing of the unacceptable out of season vibration of modular construction and parts.In order to reduce these fluctuations of attraction, phase shift ring is placed in to the utmost point near surface of yoke, and produce relatively initial magnetic attraction phase shift and can and contend with by the spring restoring force of 0 between two half periods at every turn specific magnetic force, thereby eliminate any of short duration the opening of blade.Therefore,, in the time of short circuit, blade will continue to maintain the extremely surface against yoke.
According to a kind of possible configuration, the described yoke shape that takes the shape of the letter U, wherein the end of the first arm has the top edge corresponding to the joint pin of blade, and coil is wrapped in by centre bore and is inserted into insulating core in second arm (9) of yoke around and by the phase shift loop resistance gear translation around the end of the second arm partly.Therefore, phase shift ring also plays the effect of the retainer of core.
For can be with respect to the blade of the appropriate pivotable of yoke, in order not depart from center along with the various power on blade of acting on by spring force and magnetic attraction become, be provided for the device with respect to yoke location and the mobile blade of guiding, this device comprises two small pieces:
The end of the first arm of-extension yoke;
-be arranged on each side for the described edge of the yoke of pivotable vanes;
-be inserted in two of the ends groove that is located at blade.
Particularly, the section of the second arm is the rectangle with stepped turning, and described stepped turning is positioned at the position near the rounded periphery of the core of coil.The end of the second arm of described yoke has transverse groove, and described phase shift ring is inserted in this transverse groove.Described phase shift ring is around the toe cut (35) being formed in the second arm, and wherein upper end keeps original shape.The stepped special shape of this tool can maximize the extremely section on surface with respect to the core around it
Preferably, yoke by thering is same thickness but differently contoured income device (runner) thus sub-assembly form and change the profile of yoke.
The invention still further relates to the method for assembling the hot assembly of magnetic, the hot assembly of this magnetic is used to be incorporated in electric wiring protection equipment as above, and described method comprises the steps:
-by braid, bimetal leaf is electrically connected on moving contact carrier;
-bimetal leaf is connected to electric arc income device;
-contact rack pivotable is fixed in yoke with joint pin;
-insulating core is inserted in the arm of yoke;
-part with phase shift ring around the end of the described arm of yoke;
-winding around around described core, this coil is electrically connected on electric arc income device on the one hand, is electrically connected on the other hand equipment connection terminal;
-another arm with respect to yoke on parallel plane centers blade and locates, and two arms itself are parallel to each other;
-spring is attached between end and contact rack of blade;
-yoke pivotable vanes relatively, is provided with near the arm of phase shift ring until its free end arrives.
This assembly can full automatic mode be manufactured, and on production line, can be readily integrated in all selectivity circuit breakers, because it is transportable.
Brief description of the drawings
With reference to accompanying drawing, will be explained in more detail the present invention, wherein:
Fig. 1 is according to the stereogram of the hot assembly of magnetic of the present invention;
Fig. 2 to 6 shows the different step in the trigger process of magnetic actuator;
Fig. 7 expresses the yoke of magnetic actuator;
Fig. 8 schematically shows the blade of magnetic actuator;
Fig. 9 shows the contact rack with moving contact;
Figure 10 and 11 expresses respectively end view and the front view of the core of magnetic actuator;
Figure 12 schematically shows the phase shift ring of magnetic actuator.
Embodiment
As shown in Figure 1, comprise magnetic actuator and thermal actuator according to assembly of the present invention, all elements of magnetic actuator and thermal actuator are electrically connected each other, thereby are on identical current potential.This assembly is used for being incorporated in the line protective device of selectivity circuit breaker type.
Thermal actuator mainly comprises bimetal leaf (1), its anchor portion (2) is connected in electric arc income device (arc runner) (3), and free end (4) thus can pass by online stream time, be subject to deflection opening device lock (not shown).
Magnetic brake mainly comprises the yoke (5) of the shape that takes the shape of the letter U, its first arm (8) supports moving blade (7) and on it, is fixed with the moving contact frame (6) of the moving contact (14) of equipment, and the second arm (9) (seeing Fig. 7) supports insulative core (10), coil (11) is wrapped in around insulating core.Thus, yoke (5), blade (7), contact rack (6) and moving contact (14) are all electrically connected and are in same potential.
Coil (11) is connected in electric arc income device (3) at the first end (12) of its electric wire, is electrically connected with first of thermal actuator thereby produce.The second end (13) of the electric wire of coil (11) is electrically connected on the terminal (not shown) of equipment.
Use the braid (39) that bimetal leaf (1) is connected to moving contact (14), provide with second of thermal actuator and be electrically connected.Therefore, thermal actuator and magnetic actuator same potential and composition between the different parts of composition assembly without any need for the assembly of insulating part.
Blade (7) can be around the joint pin rotation of the end top edge (16) of the first arm (8) corresponding to yoke (5).Blade shown in Fig. 8 (7) comprising:
-can with the flat surface (17) that contacts of extremely surface (18,19) of yoke (5), as shown in Figure 7;
-two grooves (20), described groove is formed in described flat surface (17) and is wherein inserted with two small pieces (tab) (21) that extend from first arm (8) of yoke (5), and described groove is arranged on each side at the head lamp brush guard pivot edge (16) of blade (7), thereby make blade (7) be correctly positioned and to center with respect to yoke (5);
-projection (15), described projection is middle outstanding by the end of the contiguous blade (7) of described groove (20), 90-degree bent in the direction contrary with yoke (5);
-arm (22), described arm extend the contiguous blade (7) of described groove end sidepiece and in the direction towards yoke (5) 90-degree bent.
In Fig. 9, more clearly illustrate, contact rack (6) also can rotate around the joint pin corresponding to gudgeon (trunnion) (23), described gudgeon is inserted in the hole (24) of that end in the first arm (8) that is located at yoke (5), as shown in Figure 7.This contact rack (6) comprising:
The flat surface (25) that-moving contact (14) is fixed thereon, described flat surface is activated against or determines contact (38) away from equipment;
-projection (31), from the outstanding projection (31) of flat surface (25);
-two side sides (26,27), described side hides the part of the yoke (5) of the joint pin of supports contacts frame (6), and has two holes (28) of and trunnion pivot (23) coaxial with the hole (24) of yoke (5);
-small pieces (29), described small pieces are outstanding and have an area supported for the arm (22) of blade (7) from the free end of the first side (26);
-arm (30), described arm extends the free end of the second side (27) and coordinates with the phase-locked of equipment.
Extension spring (33) is connected to the projection of blade (7) (15) projection (31) of contact rack (6).
Cylindrical insulating core (10) in the support coils (11) shown in Figure 10 and 11 has centre bore (32), makes in its central arm that can be inserted into yoke (5) (9).The outline of the second arm (9) is consistent with the interior shape of the centre bore (32) of core (10).In order to maximize the extremely surface (19) of yoke (5), the thickness of the cylindrical wall of core (10) must be as far as possible little, and the section of the second arm (9) is large as far as possible.Yoke (5) is made up of the sub-assembly of the income device aliging, and is difficult to obtain circular section.Therefore, the section of the second arm (9) is the rectangle with stepped turning.Therefore, as shown in figure 11, the shape of the inwall of the centre bore (32) of core (10) is also the rectangle with stepped turning.
As shown in figure 12, the end of second arm (9) of yoke (5) has transverse groove (36), is inserted with phase shift ring (37) in transverse groove (36).Spring (37) is around the toe cut (lower cut) (35) being formed on the second arm (9), wherein upper end (34) retain original shape, and spring is curled in yoke (5).It is larger than centre bore (32), therefore forms retainer, and restriction core (10) is along any translational motion of the second arm (9).
The operation of this assembly while short circuit being appearred in explanation with reference to Fig. 2 to 6.
Magnetic actuator when Fig. 2 shows when idle running (idle), nominal current is through coil (11).In this case, contact (14,38) is closed, and blade (7) with respect to extremely surface (18,19) regain a little and kept by spring (33).In fact, yoke (5) is applied to the restoring force that magnetic attraction on blade (7) is less than spring (33) in this case.Due to this neutral of blade (7), its arm (22) separates with the small pieces (29) of contact rack (6), and unique mechanical connection is spring (33) between blade (7) and contact rack (6).The latter applies the restoring force that it is setovered in the counterclockwise direction on contact rack (6).But, moving contact (14) against determining contact (38) thus stop contact rack (6) rotate up the party.
In Fig. 3, short circuit current, through coil (11), then produces in yoke (5).The magnetic attraction that yoke (5) is applied on blade (7) is greater than the restoring force of spring (33), thereby causes blade (7) towards extremely surperficial (18,19) pivotable.。In pivot motion course, the arm (22) of blade (7) contacts with the area supported of the small pieces (29) of contact rack (6), and contact is again closed.
In Fig. 4, when blade (7) finishes pivotable and abuts against extremely surface (18,19) on time, arm (22) applies supporting force and contact rack (6) is rotated in the clockwise direction on small pieces (29), against the restoring force of spring (33), thereby moving contact (14) being left determine contact (38) to static state opens distance.Then circuit is cut off.
In Fig. 5, moving contact (14) continues mobile until determine the dynamic opening distance of contact (38) under its effect of inertia.In this case, contact rack (6) is followed its clockwise rotatablely moves and its small pieces (29) are taken away the arm (22) of blade (7).
In Fig. 6, the contact rack (6) of regaining by spring (33) counterclockwise pivotable until its small pieces (29) to recover to abut against the arm (22) of blade (7) upper, then moving contact (14) is back to the static state of determining contact (38) and opens distance.Then, magnetic actuator remains on this position until short circuit disappears or until equipment is locked unlatching by auxiliary circuit.
Certainly be not of the present invention elaborating with reference to the description of the drawings above, on the contrary, it comprises those skilled in the art's replacement scheme and configuration in one's power.
Claims (13)
1. the electric wiring of a selectivity circuit breaker type protection equipment, it comprises assembly, described assembly comprises:
-magnetic actuator, can there is short circuit in the circuit that will protect time, at least one moving contact (14) is separated with determining contact (38), and described magnetic actuator comprises fixing yoke (5);
-the thermal actuator that formed by bimetal leaf (1), the mechanical lock of opening device when overload can appear in this thermal actuator in the circuit that will protect;
This equipment is characterised in that, described magnetic actuator also comprises:
-contact rack (6), this contact rack can be pivotally fixed in yoke (5) and support moving contact (14);
-coil (11), this coil is in series around the described yoke of part (5) and with bimetal leaf (1);
-can be with respect to the blade (vane) (7) of described yoke (5) rotation, this blade can be in the time of short circuit and at least one surface (18 extremely of described yoke (5), 19) contact, described yoke (5) is provided with the device for location and guiding moving blade (7);
-for recalling the device of blade (7) and contact rack (6), the calibration of setting up the activation threshold value of magnetic actuator;
-drive unit between blade (7) and contact rack (6) is set up directly corresponding between at least a portion rotatablely moving of blade (7) and at least a portion rotatablely moving of moving contact (14).
2. according to the electric wiring protection equipment described in aforementioned claim; it is characterized in that; described return mechanism comprises the spring (33) of spiral stretching spring type, and outstanding the first projection (15) in blade (7) the end contiguous joint pin from it (16) is connected to the second projection (31) outstanding from contact rack (6) by it.
3. according to the wherein electric wiring described in the protection equipment of aforementioned claim; it is characterized in that; described drive unit can comprise blade (7) its joint pin of extension (16) near-end and towards the bending arm (22) of contact rack (6), can with contact and be bearing in small pieces (29) from the outstanding small pieces (29) of contact rack (6).
4. according to the electric wiring protection equipment described in aforementioned claim, it is characterized in that, described contact rack (6) comprises the surface (25) for fixing moving contact (14) and is connected to the braid (braid) (39) of bimetal leaf (1), by described the second projection (31) and by covering two side sides (26 of part of joint pin (23) of supports contacts frame (6) of yoke (5), 27) extend, described side (26, 27) there are two inside and are inserted with the hole (28) of the joint pin (23) of contact rack (6), described side (26, 27) described small pieces (29) and another one side (27) that one of them has for engaging with blade (7) have the shape engaging with device lock.
5. according to the electric wiring protection equipment described in one in aforementioned claim, it is characterized in that, described yoke (5) is equipped with phase shift ring (37).
6. according to the electric wiring protection equipment described in aforementioned claim, it is characterized in that, described phase shift ring (37) is curling on the end of described yoke (5).
7. according to the wherein electric wiring described in the protection equipment of claim 5 or 6; it is characterized in that; described yoke (5) shape that takes the shape of the letter U; wherein the end of the first arm (8) has the top edge corresponding to the joint pin (16) of blade (7), and coil (11) is wrapped in by centre bore (32) and is inserted into insulating core (10) in second arm (9) of yoke (5) around and is stopped translation by the phase shift ring (37) around the end of the second arm (9) partly.
8. according to the electric wiring protection equipment described in aforementioned claim, it is characterized in that, for locating and guiding the device of mobile blade (7) to comprise two small pieces (21):
The end of first arm (8) of-extension yoke (5);
-be arranged on each side for the described edge (16) of the yoke (5) of pivotable vanes (7);
-be inserted in two grooves in end (20) that are located at blade (7).
9. according to the wherein electric wiring described in the protection equipment of claim 7 and 8; it is characterized in that; the section of the second arm (9) is the rectangle with stepped turning, and described stepped turning is positioned at the position near the rounded periphery of the core (10) of coil (11).
10. according to the wherein electric wiring described in the protection equipment of claim 7 to 9; it is characterized in that; the end of second arm (9) of described yoke (5) has transverse groove (36), and described phase shift ring (37) is inserted in this transverse groove.
11. according to the electric wiring protection equipment described in aforementioned claim; it is characterized in that; described phase shift ring (37) is around the toe cut (35) being formed in the second arm (9), and wherein upper end (34) keep original shape.
12. according to the electric wiring protection equipment described in one of aforementioned claim; it is characterized in that, yoke (5) by thering is same thickness but differently contoured income device (runner) thus sub-assembly form change yoke (5) profile.
13. for assembling the method for the hot assembly of magnetic, and the hot assembly of this magnetic is used to be incorporated in the electric wiring protection equipment as described in claim 1 to 12, it is characterized in that, described method comprises the steps:
-by braid (39), bimetal leaf (1) is electrically connected on moving contact carrier (6);
-bimetal leaf (1) is connected to electric arc income device (3);
-contact rack (6) pivotable is fixed in yoke (5) with joint pin (23);
-insulating core (10) is inserted in the arm (9) of yoke (5);
-part (35) with phase shift ring (37) around the end of the described arm (9) of yoke (5);
-winding around (11) around described core (10), this coil is electrically connected on electric arc income device (3) on the one hand, is electrically connected on the other hand equipment connection terminal;
-on parallel plane, make blade (7) center and locate with respect to another arm (8) of yoke (5), two arms (8,9) itself are parallel to each other;
-spring (33) is attached between an end (15) and contact rack (6) of blade (7);
-yoke (5) pivotable vanes (7) relatively, is provided with near the arm (9) of phase shift ring (37) until its free end arrives.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP12306686.2A EP2750158B1 (en) | 2012-12-27 | 2012-12-27 | Thermal, magnetic subassembly for a selective circuit-breaker |
| EP12306686.2 | 2012-12-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103903925A true CN103903925A (en) | 2014-07-02 |
| CN103903925B CN103903925B (en) | 2017-01-18 |
Family
ID=47603169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310757446.4A Active CN103903925B (en) | 2012-12-27 | 2013-12-27 | Thermal, magnetic subassembly for a selective circuit-breaker |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2750158B1 (en) |
| CN (1) | CN103903925B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023036023A1 (en) * | 2021-09-07 | 2023-03-16 | 伊顿辉能低压电器(江苏)有限公司 | Tripping device for circuit breaker |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01176621A (en) * | 1987-12-29 | 1989-07-13 | Fuji Electric Co Ltd | Overcurrent trip gear of circuit breaker |
| DE19516723C2 (en) * | 1995-05-06 | 1997-03-20 | Kloeckner Moeller Gmbh | Thermo-magnetic release device |
| CN201332071Y (en) * | 2008-09-26 | 2009-10-21 | 浙江正泰电器股份有限公司 | Thermomagnetic release for circuit breaker |
| CN102439681A (en) * | 2009-03-23 | 2012-05-02 | 黑格电子股份有限公司 | Magnetothermal release mechanism |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE475870C (en) * | 1929-05-04 | Hugo Krieger Ohg | Overcurrent switch with electromagnetic quick release and thermal time release | |
| BE539269A (en) * | 1954-06-26 | |||
| DE3421874A1 (en) * | 1984-06-13 | 1985-12-19 | Brown, Boveri & Cie Ag, 6800 Mannheim | KLAPPANKER STORAGE |
| DE102006024249B4 (en) * | 2006-05-23 | 2010-03-25 | Abb Ag | Circuit breaker |
| DE102008021768B4 (en) | 2007-04-30 | 2023-11-16 | Abb Ag | Electromagnetic release, method for producing an electromagnetic release and circuit breaker with an electromagnetic release |
-
2012
- 2012-12-27 EP EP12306686.2A patent/EP2750158B1/en active Active
-
2013
- 2013-12-27 CN CN201310757446.4A patent/CN103903925B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01176621A (en) * | 1987-12-29 | 1989-07-13 | Fuji Electric Co Ltd | Overcurrent trip gear of circuit breaker |
| DE19516723C2 (en) * | 1995-05-06 | 1997-03-20 | Kloeckner Moeller Gmbh | Thermo-magnetic release device |
| CN201332071Y (en) * | 2008-09-26 | 2009-10-21 | 浙江正泰电器股份有限公司 | Thermomagnetic release for circuit breaker |
| CN102439681A (en) * | 2009-03-23 | 2012-05-02 | 黑格电子股份有限公司 | Magnetothermal release mechanism |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023036023A1 (en) * | 2021-09-07 | 2023-03-16 | 伊顿辉能低压电器(江苏)有限公司 | Tripping device for circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2750158A1 (en) | 2014-07-02 |
| EP2750158B1 (en) | 2015-08-26 |
| CN103903925B (en) | 2017-01-18 |
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