CN104134589B - A kind of low-voltage circuit breaker with residual current trip gear - Google Patents
A kind of low-voltage circuit breaker with residual current trip gear Download PDFInfo
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- CN104134589B CN104134589B CN201410341490.1A CN201410341490A CN104134589B CN 104134589 B CN104134589 B CN 104134589B CN 201410341490 A CN201410341490 A CN 201410341490A CN 104134589 B CN104134589 B CN 104134589B
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- 230000007246 mechanism Effects 0.000 claims abstract description 96
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- 238000005859 coupling reaction Methods 0.000 claims abstract description 19
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
- 238000012360 testing method Methods 0.000 claims abstract description 8
- 238000004804 winding Methods 0.000 claims description 15
- 239000004020 conductor Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 9
- 238000004146 energy storage Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- 230000035945 sensitivity Effects 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 4
- 230000003068 static effect Effects 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 12
- 230000005405 multipole Effects 0.000 description 10
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- 238000005457 optimization Methods 0.000 description 4
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- 230000000694 effects Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
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- 230000005540 biological transmission Effects 0.000 description 1
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- 230000010354 integration Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
- H01H83/22—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages
- H01H83/226—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition the other condition being imbalance of two or more currents or voltages with differential transformer
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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
- H01H71/1009—Interconnected mechanisms
- H01H71/1027—Interconnected mechanisms comprising a bidirectional connecting member actuated by the opening movement of one pole to trip a neighbour pole
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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
- H01H71/1009—Interconnected mechanisms
- H01H2071/1036—Interconnected mechanisms having provisions for four or more poles
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- 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
- H01H2089/005—Multi-purpose combinations, e.g. LS/DI, LS/FI, of normal protective circuit breakers with known other forms of protection, e.g. earthfaults, differential, unbalance
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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
- H01H71/14—Electrothermal mechanisms
- H01H71/16—Electrothermal mechanisms with bimetal element
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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
- H01H71/2463—Electromagnetic mechanisms with plunger type armatures
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Breakers (AREA)
Abstract
With the low-voltage circuit breaker of residual current trip gear, multiple circuit breakers pole of being arranged side by side and a residual current trip gear is had in its insulative casing, each circuit breakers pole is on average arranged on the both sides of residual current trip gear, the circuit breakers of every side extremely shares the closed and disconnected of the dynamic and static contact of a composition operation mechanism controls, and each composition operation mechanism is provided with one handle, be pivoted on a trip link on rotor plate and a trip(ping) bar.Residual current trip gear comprise residual current monitoring element, electromagnetic relay, with assist handle auxiliary disengaging mechanism, one with the pivot link of each composition operation mechanism mechanical couplings and a test loop.The mutual mechanical attachment linkage of handle of the assist handle of the auxiliary disengaging mechanism of a STATEMENT OF FEDERALLY SPONSORED and residual current trip gear and each composition operation mechanism of both sides.Effectively reduce circuit breakers pole galvanic circle, rated current specification easily extensible is to 40A, and width dimensions comparatively split mounting type product reduces nearly 1/3rd.
Description
Technical field
The present invention relates to a kind of low-voltage circuit breaker; particularly a kind of miniaturized integral type multipole circuit breaker containing residual current action breaker with overcurrent protection; this circuit breaker is by three poles; or three pole four lines, or four-pole circuit breaker unit module and the module-integrated composition of residual current trip gear.
Background technology
The multipole residual current action breaker of general band overcurrent protection, as name is called that the Chinese patent CN88102711 of " modular breaker that auxiliary trip unit combines with multipole circuit breaker unit " and name are called that the Chinese patent CN95109668 of " multipole differential circuit breaker " etc. is described, all adopt assembled structure, this series products is generally according to the user demand of user, the circuit breaker of different number of poles is combined, and it is assembled with the residual current trip gear adapted in the side of circuit breaker composite module, form the multipole residual current action breaker of band overcurrent protection.This kind of small product size is large, particularly in width dimensions direction, occupy more installing space, cause terminal control case under same volume condition, install back way to reduce, way requirement is installed back in order to meet, can only increase terminal control box number or increase terminal control case size, this brings to user, and product consumptive material is many, use cost increases and lower installation convenience.
Part offshore company is proposed the multipole residual current action breaker of miniaturized integrated strip overcurrent protection in recent years; this series products is made into integration breaker unit and the residual current trip gear that is still placed on breaker unit side; mainly through the Miniaturization Design of each construction module to formation two kinds of devices, realize the compression in the size in product width direction.Because the principle of assembled structure has still been continued to use in this design, residual current trip gear is placed on the side of breaker module, this layout structure and connected mode make the electric loop of the breaker unit of the pole apart from each other with residual current trip gear longer, and electrical connection is many, wire structures is complicated, the operation of product is not only made to use power consumption large, and take more expensive real estate, thus cause product current specification can not do greatly (maximum be no more than 25A); On the other hand, the breaker unit loop of each pole through the Wiring technique of the wire of the zero sequence current mutual inductor of residual current trip gear complicated be connected more difficult, not only make production cost improve thus, but also there is state space and reserve too much problem.In addition, each breaker unit must configure an independently operating mechanism, otherwise cisco unity malfunction, and each operating mechanism must occupy larger expensive real estate.
Applicant finds on the basis of large component analysis prior art, no matter the multipole residual current action breaker product of existing band overcurrent protection is assembled structure, or integral structure, substantially the principle of assembled structure has all been continued to use, want further high current specification and reduced volume is very difficult, because the contradiction that the miniaturization of low-voltage circuit breaker and big current development trend originally restrict for a pair mutually, such as, if the current specification of existing product is increased to 40A from 25A, at least to increase conductor cross-section and the insulating radiation spacing of interiors of products, and the degree of crowding of the inner space of existing product has arrived the limit, therefore, the existing low-voltage circuit breaker with residual current trip gear obviously cannot meet user's miniaturization simultaneously, the user demand of low cost and big current specification, the current specification that particularly cannot meet increasing user proposition reaches the user demand of the miniaturized integral type of the low-voltage circuit breaker with residual current trip gear of 40A.
Summary of the invention
The object of the invention is to the defect overcoming above-mentioned prior art, there is provided that a kind of volume is little, the more rational low-voltage circuit breaker with residual current trip gear of compact conformation, layout, not only rated current specification easily extensible is to 40A, simultaneously without the need to increasing the volume of miniaturized integrated breaker, and improve Product Assembly convenience.
For achieving the above object, present invention employs following technical scheme.
A kind of low-voltage circuit breaker with residual current trip gear, multiple circuit breakers pole of being arranged side by side and a residual current trip gear is included in its insulative casing 8, each circuit breakers pole comprises a pair input, output wiring terminal (10 and 11, 20 and 21, 30 and 31, 40 and 41), an electromagnetic tripping apparatus to short circuit current sensitivity (14 or 53), a thermal release device to overload current sensitivity (26 or 60), one is fixed on entirety and moulds fixed contact 22 on shell, one closes with fixed contact/moving contact 23 that coordinates of disjunction and an arc-control device 18, wherein: described multiple circuit breakers poles are arranged on the both sides of described residual current trip gear fifty-fifty, the circuit breakers pole that two of every side are adjacent shares a composition operation mechanism controls two to dynamic, the closed and disconnected of fixed contact, each composition operation mechanism is provided with a handle 13, a rotor plate 54 it being provided with the contact coupling mechanism of two moving contacts 23 of the adjacent circuit breakers pole of its two of driving, be pivoted on the trip link 24 on this rotor plate 54 and a trip(ping) bar 55.Described residual current trip gear comprise a residual current monitoring element, an electromagnetic relay 42, auxiliary disengaging mechanism with assist handle 29, one with the pivot link 35 of described each composition operation mechanism mechanical couplings and a test loop 49.A STATEMENT OF FEDERALLY SPONSORED 15, the assist handle 29 of auxiliary disengaging mechanism of it and described residual current trip gear and the handle 13 of each composition operation mechanism of both sides mechanical attachment linkage mutually.
As a further improvement on the present invention, described circuit breakers pole is 4, they form two pairs of circuit breakers poles pair in combination of two mode, and right two circuit breakers poles of the often pair of circuit breakers pole share a composition operation mechanism, described residual current trip gear be disposed side by side on two pairs of circuit breakers poles between; Or, described circuit breakers pole is 3, wherein two circuit breakers poles partner circuit breakers pole pair, the shared composition operation mechanism of two circuit breakers poles that this circuit breakers pole is right, the private operating mechanism of remaining single circuit breakers pole, described residual current trip gear is disposed side by side between described circuit breakers pole pair and single circuit breakers pole.
Improve further again as of the present invention, described circuit breaker also comprises one connects linkage drive rod 28 with the assist handle 29 of the handle 13 of each composition operation mechanism and the auxiliary disengaging mechanism of residual current trip gear.
Improve further again as of the present invention, the pivot link 35 of described residual current trip gear is provided with the mechanical couplings structure of short column (the 50 and 56) coordinated that can simultaneously trip with the short circuit of the composition operation mechanism of the circuit breakers pole of adjacent both sides.
Improve further again as of the present invention, multiple dividing plate is side by side provided with in described insulative casing 8, in insulative casing 8, multiple chamber is side by side formed by dividing plate, residual current trip gear is arranged in middle chamber, installs a circuit breakers pole in each chamber of its both sides respectively.
Improve further again as of the present invention, the handle 13 of described composition operation mechanism is pivoted on insulative casing 8, rotor plate 54 is pivoted on insulative casing 8, U-shaped bar 52 respectively with handle 13 and trip link 24 hinge-coupled, two short circuits that two electromagnetic tripping apparatus (14 and 53) that the trip(ping) bar 55 be pivoted on rotor plate 54 is provided with the adjacent circuit breakers pole of two of controlling with it coordinate are tripped short column (50 and 56), the two overload trip short columns (58 and 59) that two thermal release devices (26 and 60) trip(ping) bar 55 being also provided with the adjacent circuit breakers pole of two of controlling with it coordinate, mechanical interlocking 17 is provided with between described trip link 24 and trip(ping) bar 55, the elastic force of energy-stored spring is for driving described composition operation mechanism tripping operation, the elastic force of back-moving spring locks for ordering about described mechanical interlocking 17.
Improve further again as of the present invention, described residual current monitoring element comprise a ring-shaped core 27, through ring-shaped core 27 form with circuit breakers pole the armature winding 45 that electrically connects and around the secondary winding on ring-shaped core 27, described secondary winding connects with electromagnetic relay 42, and described electromagnetic relay 42 is by the composition operation mechanism mechanically co-operating with both sides circuit breakers pole of auxiliary disengaging mechanism and pivot link 35.
As further optimization of the present invention, described auxiliary disengaging mechanism comprises assist handle 29, auxiliary U-shaped bar 33, auxiliary rotary plate 34, auxiliary tripping bar 51, snap close 36, restoring lever 37, auxiliary energy storage spring and spring-assisted reduction, described snap close 36 and electromagnetic relay 42 mechanical couplings, described auxiliary rotary plate 34 to be tripped short column (50 and 56) mechanical couplings by pivot link 35 and two short circuits of the Liang Ge composition operation mechanism of both sides circuit breakers pole.
As further optimization of the present invention, the armature winding of described residual current monitoring element adopts fexible conductor to make, described fexible conductor is also simultaneously as the fexible conductor of each circuit breakers pole, and an one end is electrically connected with the corresponding leading-out terminal of the electromagnetic tripping apparatus (14 or 53) of this circuit breakers pole.
Improve further again as of the present invention, the perforate of an electric connecting process is arranged on the bottom of the corresponding installation site of residual current trip gear of described insulative casing 8, is preferably provided with dismountable block that is convenient to electromagnetic relay 42 described in installment and debugging in the bottom of electromagnetic relay 42.
Applicant is from simplification product structure, by the integral layout of the present invention to the low-voltage circuit breaker with residual current trip gear and the optimal design of concrete structure, effectively reduce the galvanic circle of each pole of breaker unit, reduce operation power consumption, circuit breaker Width size comparatively split mounting type product reduce nearly 1/3rd, valuable space is obtained for realizing high current specification and reduce small product size simultaneously, not only make under the prerequisite not increasing volume or reduction volume, current specification is risen to 40A and becomes possibility, but also be convenient to electromagnetic relay installment and debugging, optimize production technology, improve production efficiency, save cost.
Accompanying drawing explanation
More clearly advantages and features of the invention can be found out from the description of accompanying drawing illustrated embodiment, wherein:
Fig. 1 is the contour structures schematic perspective view of the low-voltage circuit breaker with residual current trip gear of three pole four line embodiments of the present invention.
Fig. 2 is the floor map of the internal structure of a circuit breakers pole in low-voltage circuit breaker of the present invention.
Fig. 3 is the floor map of the internal structure of residual current trip gear in low-voltage circuit breaker of the present invention.
Fig. 4 and Fig. 5 is the schematic perspective view of each inside modules structure after the low-voltage circuit breaker shown in Fig. 1 removes shell respectively.
Fig. 6 is the exploded perspective figure of residual current trip gear in low-voltage circuit breaker of the present invention.
Fig. 7 is the perspective view of the composition operation mechanism of circuit breakers pole in low-voltage circuit breaker of the present invention.
Fig. 8 is the planar structure schematic diagram of the composition operation mechanism of circuit breakers pole in the low-voltage circuit breaker of the present invention shown in Fig. 7, shows the integral installation relation between a circuit breakers pole and composition operation mechanism.
Fig. 9 is the electrical connection schematic diagram of a pole circuit breaker of low-voltage circuit breaker of the present invention.
Embodiment
Below in conjunction with the embodiment that Fig. 1 to Fig. 9 provides, further illustrate the embodiment of the low-voltage circuit breaker with residual current trip gear of the present invention.Low-voltage circuit breaker with residual current trip gear of the present invention is not limited to the description of following examples.
Low-voltage circuit breaker with residual current trip gear of the present invention mainly illustrates with the three conventional pole four line embodiments shown in Fig. 1-8, see Fig. 1, four the pole modules and the residual current trip gear that wherein form breaker unit are all arranged in same insulative casing 8, the low-voltage circuit breaker of miniaturized integral type with residual current trip gear can be made, multiple circuit breakers pole of being arranged side by side and a residual current trip gear is included in its insulative casing 8, each circuit breakers pole comprises a pair input, output wiring terminal (10 and 11, 20 and 21, 30 and 31, 40 and 41), an electromagnetic tripping apparatus to short circuit current sensitivity (14 or 53), a thermal release device to overload current sensitivity (26 or 60), one is fixed on entirety and moulds fixed contact 22 on shell, one closes with fixed contact/moving contact 23 that coordinates of disjunction and an arc-control device 18, wherein: described multiple circuit breakers poles are arranged on the both sides of described residual current trip gear fifty-fifty, the circuit breakers pole that two of every side are adjacent shares a composition operation mechanism controls two to dynamic, the closed and disconnected of fixed contact, each composition operation mechanism is provided with a handle 13, a rotor plate 54 it being provided with the contact coupling mechanism of two moving contacts 23 of the adjacent circuit breakers pole of its two of driving, be pivoted on the trip link 24 on this rotor plate 54 and a trip(ping) bar 55.A pair adjacent circuit breakers pole shares the closed and disconnected of a dynamic and static contact of composition operation mechanism controls, manual operation is with fixed handle 13 and 48 by STATEMENT OF FEDERALLY SPONSORED 15, and automatic operation is the co-operating by thermal release device 26 or 60 (all the other are not shown) and electromagnetic tripping apparatus 14 or 53 (all the other are not shown).Described residual current trip gear comprise a residual current monitoring element, an electromagnetic relay 42, auxiliary disengaging mechanism with assist handle 29, one with the pivot link 35 of described each composition operation mechanism mechanical couplings and a test loop 49.Particularly as shown in Figure 7, pivot link 35 is provided with the mechanical couplings structure that the short column (50 and 56) that can simultaneously trip with the short circuit of the composition operation mechanism of the circuit breakers pole of adjacent both sides coordinates.A STATEMENT OF FEDERALLY SPONSORED 15, the assist handle 29 of auxiliary disengaging mechanism of it and described residual current trip gear and the handle 13 of each composition operation mechanism of both sides mechanical attachment linkage mutually.
The low-voltage circuit breaker with residual current trip gear of the present invention shown in Fig. 1 comprises for four circuit breakers poles be arranged side by side of mounting strap defencive function, a residual current trip gear and Liang Ge composition operation mechanism in an overall insulative casing 8.These circuit breakers poles comprise four pair of wire connection terminals (10 and 11 that can control four routes, 20 and 21,30 and 31,40 and 41), namely four circuit breakers poles be arranged side by side comprise four pair of wire connection terminals, four electromagnetic tripping apparatus, four thermal release devices, four fixed contacts, four moving contacts and four arc-control devices altogether.The circuit breaker of this form can have two kinds of actual service conditions: a kind of is the situation of three pole four lines, and its four route is respectively three-phase firewire and a phase neutral line; Another kind is the situation of four poles, and its four route is respectively specific four poles.In order to evade the difficulty of the uncertain accurate description for the pole in circuit breaker caused because of service condition, the term that the application refer to " circuit breakers pole ", so that can from the concept of the structure accurate description of circuit breaker about the pole in circuit breaker, that is: " circuit breakers pole " described here refers to the combination of all components and parts that the same route that controls at circuit breaker configures, it refers to an assembly, as, a multipole circuit breaker with four circuit breakers poles, it can be used in the circuit of three pole four lines or four poles, and a multipole circuit breaker with three circuit breakers poles, it can be used for two pole three line (live wires, the neutral line, ground wire) or three poles (three-phase firewire) circuit in.The quantity of the circuit breakers pole that the embodiment of the low-voltage circuit breaker with residual current trip gear that Fig. 1 provides comprises is 4, the most conventional is 3 and 4, the quantity of the circuit breakers pole comprised with the low-voltage circuit breaker of residual current trip gear of the present invention is not limited to four, can also be 3.The assembled structure of prior art is that a breaker unit one moulds shell, the multipole circuit breaker comprising residual current tripping function as assembled by four breaker units needs 5 to mould shell, and see Fig. 1,2,3, the present invention is how many regardless of the number of circuit breakers pole, only have the insulative casing 8 that overall, reduce nearly 1/3rd at circuit breaker Width size more existing split mounting type product thus.For the ease of installing and improving insulation isolation performance, multiple dividing plate (not shown) is side by side provided with in described insulative casing 8, in insulative casing 8, multiple chamber is side by side formed by dividing plate, install a circuit breakers pole in each chamber of both sides respectively, residual current trip gear is arranged in middle chamber.Obviously, because each circuit breakers pole has identical structure, the chamber therefore respectively installing circuit breakers pole is preferably of similar shape and size.
Illustrate in Fig. 4,5 that residual current trip gear is disposed side by side on the integral layout structure of the centre of four circuit breakers poles, for three pole products, the extremely adjacent layout of A pole and B, residual current trip gear is arranged between AB pole and C pole; For three grade of four line or four pole products, the extremely adjacent layout of A pole and B, the extremely adjacent layout of C pole and N, and AB and CN is symmetrically distributed in residual current trip gear both sides.See Fig. 1,4,5, multiple circuit breakers pole of the present invention is installed in overall insulative casing 8 in the mode be arranged side by side, and, residual current trip gear is arranged on the centre of the multiple circuit breakers poles be arranged side by side, in the middle of so-called, the residual current trip gear distinguishing prior art is completely arranged on the structure on the side of breaker unit (such as right side).In order to make the wiring in this circuit breaker the shortest and electrically connect minimum, the effect that two circuit breakers poles share a composition operation mechanism can also be realized simultaneously, in the middle of this is so-called, also refer to following preferable layout structure: when comprising 4 circuit breakers poles, two pairs of circuit breakers poles pair are formed in combination of two mode, right two circuit breakers poles of the often pair of circuit breakers pole share a composition operation mechanism, residual current trip gear be disposed side by side on two pairs of circuit breakers poles between (as shown in Figure 4, Figure 5).When comprising 3 circuit breakers poles, wherein two circuit breakers poles partner circuit breakers pole pair, these two circuit breakers poles share a composition operation mechanism, all the other circuit breakers poles form single circuit breakers pole, the private operating mechanism of this single-pole circuit breaker, residual current trip gear is disposed side by side between circuit breakers pole pair and single circuit breakers pole.Obviously, residual current trip gear is arranged on the integral layout structure of the centre of the multiple circuit breakers poles be arranged side by side, it is the key means realizing high current specification He reduce small product size, but realize this integral layout structure, needed that integral layout is planned, the structure of related components (particularly operating mechanism), wire structures, the redesign of the control procedure changed between five states (combined floodgates, separating brake, short circuit tripping operation, overload trip, residual current tripping operation) and transmission process and OVERALL OPTIMIZA-TION DESIGN FOR.
See Fig. 1,3,4,5,6, STATEMENT OF FEDERALLY SPONSORED 15 connects linkage with the assist handle 29 of the handle 13 of each composition operation mechanism and the auxiliary disengaging mechanism of residual current trip gear, the draw bail of the available form known of this connection, " handle 13 of Shi Ge composition operation mechanism and the assist handle 29 of auxiliary disengaging mechanism link " refers to that the action of wherein any one handle all can drive remaining all handle action here.By artificial or mechanical mode, STATEMENT OF FEDERALLY SPONSORED 15 is placed in make position and the open position of breaker contact point, or by a thermal release device, electromagnetic tripping apparatus or residual current trip gear automatic operation.In order to improve between each circuit breakers pole, interlock performance between each circuit breakers pole and residual current trip gear, a kind of selectable scheme of the low-voltage circuit breaker with residual current trip gear of the present invention also comprises one connects linkage drive rod 28 with the assist handle 29 of the handle 13 of each composition operation mechanism and the auxiliary disengaging mechanism of residual current trip gear, the concrete draw bail of drive rod 28 connection described herein refers to: on the handle 13 of each composition operation mechanism, there is rod aperture (not marking in figure), rod aperture described in drive rod 28 can insert.Refer to that the action of wherein any one handle all can drive remaining all handle action by the handle 13 of this connection Shi Ge composition operation mechanism and assist handle 29 interlock of auxiliary disengaging mechanism.When circuit breakers pole is more, increase drive rod 28 particularly important.Owing to present invention employs the technology of the handle 13 of composition operation mechanism, significantly can reduce the quantity of handle 13, thus make the Installation and Debugging increasing drive rod 28 become very easy relative to prior art.
See Fig. 2, 6, 7, 8, the concrete structure scheme of described composition operation mechanism can have multiple, a kind of preferred scheme is: described composition operation mechanism comprises a handle 13 be pivoted on insulative casing 8, one is pivoted on the rotor plate 54 on insulative casing 8, one is pivoted on the trip link 24 on rotor plate 54, one respectively with the U-shaped bar 52 of handle 13 and trip link 24 hinge-coupled, one is pivoted on the trip(ping) bar 55 on rotor plate 54, an energy-stored spring (not shown) and a back-moving spring (not shown), mechanical interlocking 17 is provided with between trip link 24 and trip(ping) bar 55, the elastic force of energy-stored spring drives operating mechanism tripping operation, the elastic force of back-moving spring orders about mechanical interlocking 17 and locks.Rotor plate 54 is provided with the contact coupling mechanism of two moving contacts 23 installing the adjacent circuit breakers pole of its two of driving, two short circuits that trip(ping) bar 55 is provided with two electromagnetic tripping apparatus 14 and 53 coordinated of the adjacent circuit breakers pole of two of controlling with it are tripped short column (50 and 56), the two overload trip short columns (58 and 59) that two thermal release devices (26 and 60) trip(ping) bar 55 being also provided with the adjacent circuit breakers pole of two of controlling with it coordinate.The principle of mechanical interlocking 17 and structure adopt can realizing of known type, the locking that it performs between trip link 24 and trip(ping) bar 55 under the control of trip(ping) bar 55 is changed with unblock, allow composition operation mechanism to perform closing operation in the locked state, its unblock causes composition operation mechanical unlocking to trip.The contact coupling mechanism for installing two moving contacts 23 on rotor plate 54, preferably adopts the coupling mechanism with excess of stroke function.Be that the rotor plate of prior art is the moving contact of an installation pole with the maximum difference of prior art, and rotor plate of the present invention 54 installs two moving contacts of two circuit breakers poles.Distinguish with other of prior art and be, the trip(ping) bar of prior art only coordinates with an electromagnetic tripping apparatus and a thermal release device, and trip(ping) bar 55 of the present invention not only coordinates with two electromagnetic tripping apparatus (14 and 53), but also coordinate with two thermal release devices (26 and 60).
See Fig. 3 and Fig. 6, described auxiliary disengaging mechanism can have multiple concrete structure scheme, a kind of preferred scheme is, described auxiliary disengaging mechanism comprises assist handle 29, auxiliary U-shaped bar 33, auxiliary rotary plate 34, auxiliary tripping bar 51, snap close 36, restoring lever 37, auxiliary energy storage spring (not shown) and spring-assisted reduction (not shown).The structure of auxiliary disengaging mechanism and principle and composition operation mechanism similar, unlike auxiliary rotary plate 34 without the need to installing moving contact, snap close 36 and electromagnetic relay 42 mechanical couplings, auxiliary rotary plate 34 to be tripped short column (50 and 56) mechanical couplings by pivot link 35 and two short circuits of the Liang Ge composition operation mechanism of its both sides circuit breakers pole.
See Fig. 3 and Fig. 9, described residual current monitoring element comprises a ring-shaped core 27, through the armature winding 45 of ring-shaped core 27, around the secondary winding on ring-shaped core 27, armature winding 45 and circuit breakers pole are formed and electrically connect, secondary winding connects with electromagnetic relay 42, and electromagnetic relay 42 is by the composition operation mechanism mechanically co-operating with both sides circuit breakers pole of auxiliary disengaging mechanism and pivot link 35.The armature winding of described residual current monitoring element adopts fexible conductor, and described fexible conductor also simultaneously as electrically connecting between the electromagnetic tripping apparatus of each circuit breakers pole and corresponding leading-out terminal, can improve Product Assembly convenience.A circuit breakers pole configures a fexible conductor, and an end of each fexible conductor is connected with the leading-out terminal of the electromagnetic tripping apparatus (14 or 53) of this circuit breakers pole.Obviously, such connecting structure for electrical equipment, can realize the effect of optimization that the shortest, the electric connection of wiring distance is minimum.As shown in Figure 9, it also can make wiring distance and electrically connect to optimize further an electrically connected preferred embodiment of each circuit breakers pole.
See Fig. 3, in order to optimize wiring and mounting and testing technique further, a kind of preferred scheme is, the perforate of an electric connecting process is provided with in the bottom of the residual current trip gear installation site of insulative casing 8, preferably be provided with a dismountable block 43 in the bottom of residual current trip gear part electromagnetic relay 42, install when electromagnetic relay 42 and be connected with described secondary winding, after completing parameter testing, be slidably installed by described perforate and put in place, then use a block 43 by airtight for described perforate, described block 43 is detachable, so that electromagnetic relay installment and debugging, optimized production process.As shown in Figure 3.Residual current trip gear is by tripping mechanism and pivot link 35 and both sides circuit breaker operation mechanism 5 mechanically co-operating.
The following describes the operating process of the low-voltage circuit breaker with residual current trip gear of the present invention.
Breaker closing:
When device urged clockwise STATEMENT OF FEDERALLY SPONSORED 15 is rotated to make position manually or automatically, STATEMENT OF FEDERALLY SPONSORED 15 driving handle 13 and 48 drives U-shaped bar 52 and trip link 24 is rotated counterclockwise around axle, trip link 24 is coupled with trip(ping) bar 55 to form a mechanical interlocking 17, continue promote STATEMENT OF FEDERALLY SPONSORED 15 makes rotor plate 54 rotate clockwise around axle and drive contact supporting plate together to rotate, cause contact 22,23 contact and in the close position.In promotion STATEMENT OF FEDERALLY SPONSORED 15 rotation process, the drive rod 28 be coupled with handle 13 and 48 drives the handle 29 of residual current trip gear to rotate clockwise around axle, drive U-shaped bar 33 and release lever 51 is rotated counterclockwise around axle, release lever 51 is coupled with snap close 36 to form a mechanical interlocking (not shown), continuing to promote STATEMENT OF FEDERALLY SPONSORED 15 makes rotor plate 34 rotate clockwise around axle, when circuit breakers pole sound contact and in the close position time, the tripping mechanism of residual current trip gear completes energy storage and self-locking, indication window 12 display white shown in Fig. 1.
Circuit breaker disconnects:
Device promotes STATEMENT OF FEDERALLY SPONSORED 15 when rotating to open position counterclockwise manually or automatically, handle 13 and 48 drives U-shaped bar 52 and makes trip link 24 around axle clockwise movement, simultaneously, operating mechanism energy-stored spring (not shown) releases energy, rotor plate 54 is rotated counterclockwise and drives contact supporting plate together to rotate, contact 22,23 (all the other are not shown) is caused to be in open position, as shown in Figure 2.The tripping mechanism of residual current trip gear is in energy storage state, indication window 12 display white.
When there is short circuit current in circuit, electromagnetic tripping apparatus 14 or 53 action, push rod 19 or 57 moves right and promotes trip(ping) bar short column 50 or 56 (all the other are not shown) action, make trip(ping) bar 55 by counterclockwise pivoting, and the mechanical interlocking 17 making trip(ping) bar 55 and trip link 24 be formed unlocks, energy-stored spring releases energy, and rotor plate 54, handle 13 and 48 are rotated counterclockwise simultaneously, and drive contact supporting plate together to rotate, cause contact 22,23 to be in open position.The tripping mechanism of residual current trip gear is in energy storage state, indication window 12 display white.
When there is overload current in circuit, bimetal leaf 26 or 60 (all the other the are not shown) flexural deformation of thermal trip, by coordinating with the short column 58 or 59 of actuator lever 25, drive actuator lever to move right and drive trip(ping) bar 55 by counterclockwise pivoting, the mechanical interlocking 17 that trip(ping) bar 55 and trip link 24 are formed unlocks, energy-stored spring releases energy, rotor plate 54, handle 13 and 48 are rotated counterclockwise simultaneously, and drive contact supporting plate together to rotate, cause contact 22,23 to be in open position.The tripping mechanism of residual current trip gear is in energy storage state, indication window 12 display white.
When there is residual current in circuit and reach operating value or press test button 16 make test loop produce residual current time, the signal of telecommunication that the secondary winding of residual current monitoring element produces makes electromagnetic relay 42 action, push rod 38 ejects, promote restoring lever 37 by counterclockwise rotating around axle 39, promote snap close 36 counterclockwise to pivot, and make the chain unblock that trip link 51 and snap close 36 are formed, energy-stored spring releases energy, rotor plate 34 and handle 29 are rotated counterclockwise simultaneously, rotor plate 34 drives pivot link 35 counterclockwise to rotate around axle, the short column 50 (opposite side is not shown) of the composition operation mechanism trip(ping) bar of both sides breaker unit is driven to move right, and make contact be in open position.Being rotated counterclockwise at rotor plate 34 gets back in unloading position process, and become red with the colour code of rotor plate one by the white corresponding with indication window 12, the indication window 12 namely shown in Fig. 1 shows redness.
Above-described embodiment is available to those of ordinary skill in the art to realize or uses of the present invention; those of ordinary skill in the art can be without departing from the present invention in the case of the inventive idea; various modifications or change are made to above-described embodiment; thus protection scope of the present invention not limit by above-described embodiment, and should be the maximum magnitude meeting the inventive features that claim is mentioned.
Claims (10)
1. the low-voltage circuit breaker with residual current trip gear, multiple circuit breakers pole of being arranged side by side and a residual current trip gear is included in its insulative casing (8), each circuit breakers pole comprises a pair input, output wiring terminal (10 and 11, 20 and 21, 30 and 31, 40 and 41), an electromagnetic tripping apparatus to short circuit current sensitivity (14 or 53), a thermal release device to overload current sensitivity (26 or 60), one is fixed on entirety and moulds fixed contact (22) on shell, one closes with fixed contact/moving contact (23) that coordinates of disjunction and an arc-control device (18), it is characterized in that:
Described multiple circuit breakers poles are arranged on the both sides of described residual current trip gear fifty-fifty, the circuit breakers pole that two of every side are adjacent shares a composition operation mechanism controls two to dynamic, the closed and disconnected of fixed contact, each composition operation mechanism is provided with a handle (13), a rotor plate (54) driving two moving contacts (23) of two adjacent circuit breakers poles, be pivoted on a trip link (24) on this rotor plate (54) and a trip(ping) bar (55), rotor plate (54) is provided with the contact coupling mechanism of two moving contacts (23) of installing the adjacent circuit breakers pole of its two of driving,
Described residual current trip gear comprise a residual current monitoring element, electromagnetic relay (42), auxiliary disengaging mechanism with assist handle (29), one with the pivot link (35) of described each composition operation mechanism mechanical couplings and a test loop (49);
A STATEMENT OF FEDERALLY SPONSORED (15), the assist handle (29) of auxiliary disengaging mechanism of it and described residual current trip gear and the handle (13) of each composition operation mechanism of both sides mechanical attachment linkage mutually.
2. the low-voltage circuit breaker with residual current trip gear according to claim 1, it is characterized in that: described circuit breakers pole is 4, they form two pairs of circuit breakers poles pair in combination of two mode, right two circuit breakers poles of the often pair of circuit breakers pole share a composition operation mechanism, described residual current trip gear be disposed side by side on two pairs of circuit breakers poles between; Or, described circuit breakers pole is 3, wherein two circuit breakers poles partner circuit breakers pole pair, the shared composition operation mechanism of two circuit breakers poles that this circuit breakers pole is right, the private operating mechanism of remaining single circuit breakers pole, described residual current trip gear is disposed side by side between described circuit breakers pole pair and single circuit breakers pole.
3. the low-voltage circuit breaker with residual current trip gear according to claim 1, is characterized in that: described circuit breaker also comprises one connects linkage drive rod (28) with the assist handle (29) of the handle (13) of each composition operation mechanism and the auxiliary disengaging mechanism of residual current trip gear.
4. the low-voltage circuit breaker with residual current trip gear according to claim 1, is characterized in that: the pivot link (35) of described residual current trip gear is provided with the mechanical couplings structure of short column (the 50 and 56) coordinated that can simultaneously trip with the short circuit of the composition operation mechanism of the circuit breakers pole of adjacent both sides.
5. the low-voltage circuit breaker with residual current trip gear according to claim 1, it is characterized in that: in described insulative casing (8), be provided with multiple dividing plate side by side, in insulative casing (8), multiple chamber is side by side formed by dividing plate, residual current trip gear is arranged in middle chamber, installs a circuit breakers pole in each chamber of its both sides respectively.
6. the low-voltage circuit breaker with residual current trip gear according to claim 1, it is characterized in that: the handle (13) of described composition operation mechanism is pivoted on insulative casing (8), rotor plate (54) is pivoted on insulative casing (8), U-shaped bar (52) respectively with handle (13) and trip link (24) hinge-coupled, two short circuits that two electromagnetic tripping apparatus (14 and 53) that the trip(ping) bar (55) be pivoted on rotor plate (54) is provided with the adjacent circuit breakers pole of two of controlling with it coordinate are tripped short column (50 and 56), the two overload trip short columns (58 and 59) that two thermal release devices (26 and 60) trip(ping) bar (55) being also provided with the adjacent circuit breakers pole of two of controlling with it coordinate, mechanical interlocking (17) is provided with between described trip link (24) and trip(ping) bar (55), the elastic force of energy-stored spring is for driving described composition operation mechanism tripping operation, the elastic force of back-moving spring is for ordering about described mechanical interlocking (17) locking.
7. the low-voltage circuit breaker with residual current trip gear according to claim 1, it is characterized in that: described residual current monitoring element comprises a ring-shaped core (27), through ring-shaped core (27) form with circuit breakers pole the armature winding (45) that electrically connects and around the secondary winding on ring-shaped core (27), described secondary winding connects with electromagnetic relay (42), described electromagnetic relay (42) is by the composition operation mechanism mechanically co-operating with both sides circuit breakers pole of auxiliary disengaging mechanism and pivot link (35).
8. the low-voltage circuit breaker with residual current trip gear according to claim 1 or 7, it is characterized in that: described auxiliary disengaging mechanism comprises assist handle (29), auxiliary U-shaped bar (33), auxiliary rotary plate (34), auxiliary tripping bar (51), snap close (36), restoring lever (37), auxiliary energy storage spring and spring-assisted reduction, described snap close (36) and electromagnetic relay (42) mechanical couplings, described auxiliary rotary plate (34) to be tripped short column (50 and 56) mechanical couplings by pivot link 35 and two short circuits of the Liang Ge composition operation mechanism of its both sides circuit breakers pole.
9. the low-voltage circuit breaker with residual current trip gear according to claim 1 or 7, it is characterized in that: the armature winding of described residual current monitoring element adopts fexible conductor to make, described fexible conductor is also simultaneously as the fexible conductor of each circuit breakers pole, and an one end is electrically connected with the corresponding leading-out terminal of the electromagnetic tripping apparatus (14 or 53) of this circuit breakers pole.
10. the low-voltage circuit breaker with residual current trip gear according to claim 1, it is characterized in that: the perforate of an electric connecting process is arranged on the bottom of the corresponding installation site of residual current trip gear of described insulative casing (8), is provided with in the bottom of electromagnetic relay (42) dismountable block that is convenient to electromagnetic relay described in installment and debugging (42).
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410341490.1A CN104134589B (en) | 2014-07-17 | 2014-07-17 | A kind of low-voltage circuit breaker with residual current trip gear |
| EP15822772.8A EP3171386A4 (en) | 2014-07-17 | 2015-01-28 | Low-voltage circuit breaker with residual current tripping device |
| KR1020177004351A KR101968181B1 (en) | 2014-07-17 | 2015-01-28 | Low-voltage circuit breaker with residual current tripping device |
| PCT/CN2015/071743 WO2016008297A1 (en) | 2014-07-17 | 2015-01-28 | Low-voltage circuit breaker with residual current tripping device |
| AU2015291699A AU2015291699B2 (en) | 2014-07-17 | 2015-01-28 | Low-voltage circuit breaker with residual current tripping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410341490.1A CN104134589B (en) | 2014-07-17 | 2014-07-17 | A kind of low-voltage circuit breaker with residual current trip gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104134589A CN104134589A (en) | 2014-11-05 |
| CN104134589B true CN104134589B (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410341490.1A Active CN104134589B (en) | 2014-07-17 | 2014-07-17 | A kind of low-voltage circuit breaker with residual current trip gear |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3171386A4 (en) |
| KR (1) | KR101968181B1 (en) |
| CN (1) | CN104134589B (en) |
| AU (1) | AU2015291699B2 (en) |
| WO (1) | WO2016008297A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134589B (en) * | 2014-07-17 | 2016-01-20 | 正泰集团股份有限公司 | A kind of low-voltage circuit breaker with residual current trip gear |
| CN105702537B (en) * | 2016-04-14 | 2017-12-01 | 乐清市智顺电气有限公司 | Electric protective device |
| CN110033997B (en) * | 2019-04-26 | 2023-12-12 | 珠海康恒电子设备有限公司 | Low-voltage circuit breaker production line and process thereof |
| CN111463081A (en) * | 2020-03-31 | 2020-07-28 | 浙江零壹智能电器研究院有限公司 | Miniature circuit breaker locking and tripping system and method |
| CN112133610B (en) * | 2020-09-16 | 2023-01-31 | 华翔翔能科技股份有限公司 | Intelligent circuit breaker with visualization function |
| CN112290548A (en) * | 2020-11-06 | 2021-01-29 | 国网湖南省电力有限公司 | Automatic switching-on and switching-off device of distribution transformer for agricultural distribution network alternating current ice melting |
| CN112531642B (en) * | 2020-12-02 | 2023-04-07 | 真兰电气(上海)有限公司 | Residual current protection circuit and residual current protection device |
| WO2022226817A1 (en) * | 2021-04-28 | 2022-11-03 | 浙江沃斯托电气有限公司 | Residual current operated circuit breaker |
| CN116504595A (en) * | 2022-01-21 | 2023-07-28 | 浙江正泰电器股份有限公司 | Circuit breaker |
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| FR2559616B1 (en) * | 1984-02-14 | 1986-05-30 | Merlin Gerin | AUXILIARY BLOCK FOR REMOTE CONTROL OF AN ELECTRIC CIRCUIT BREAKER |
| IN170416B (en) * | 1987-05-11 | 1992-03-21 | Merlin Gerin | |
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| US6137069A (en) * | 1994-08-18 | 2000-10-24 | General Electric Company | Circuit breaker handle interlock |
| FR2777110B1 (en) * | 1998-04-03 | 2000-06-23 | Legrand Sa | MULTIPOLAR DIFFERENTIAL CIRCUIT BREAKER |
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| CN104134589B (en) * | 2014-07-17 | 2016-01-20 | 正泰集团股份有限公司 | A kind of low-voltage circuit breaker with residual current trip gear |
| CN204029739U (en) * | 2014-07-17 | 2014-12-17 | 正泰集团股份有限公司 | A kind of low-voltage circuit breaker with residual current trip gear |
-
2014
- 2014-07-17 CN CN201410341490.1A patent/CN104134589B/en active Active
-
2015
- 2015-01-28 EP EP15822772.8A patent/EP3171386A4/en active Pending
- 2015-01-28 WO PCT/CN2015/071743 patent/WO2016008297A1/en active Application Filing
- 2015-01-28 KR KR1020177004351A patent/KR101968181B1/en active IP Right Grant
- 2015-01-28 AU AU2015291699A patent/AU2015291699B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| EP3171386A1 (en) | 2017-05-24 |
| WO2016008297A1 (en) | 2016-01-21 |
| KR20170040261A (en) | 2017-04-12 |
| KR101968181B1 (en) | 2019-04-12 |
| AU2015291699B2 (en) | 2017-11-02 |
| AU2015291699A1 (en) | 2017-03-09 |
| EP3171386A4 (en) | 2018-04-25 |
| CN104134589A (en) | 2014-11-05 |
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