CN104134589A - Low-voltage circuit breaker with residual current trip device - Google Patents
Low-voltage circuit breaker with residual current trip device Download PDFInfo
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- CN104134589A CN104134589A CN201410341490.1A CN201410341490A CN104134589A CN 104134589 A CN104134589 A CN 104134589A CN 201410341490 A CN201410341490 A CN 201410341490A CN 104134589 A CN104134589 A CN 104134589A
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- residual current
- circuit breakers
- current trip
- trip gear
- circuit breaker
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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 unbalance 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 unbalance 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
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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
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/128—Manual release or trip mechanisms, e.g. for test purposes
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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
Abstract
The invention relates to a low-voltage circuit breaker with a residual current trip device. A plurality of circuit breaker poles which are arranged in parallel and the residual current trip device are arranged in molded insulation shell, the circuit breaker poles are uniformly arranged at the two sides of the residual current trip device, adjacent circuit breaker poles at each side share a composite operating mechanism, the composite operating mechanism is used for controlling the on and off of a movable contact and a static contact, each composite operating mechanism is provided with a handle, a trip connection rod pivotally arranged on a rotation plate and trip rod, the residual current trip device comprises a residual current monitoring element, an electromagnetic relay, an auxiliary trip mechanism with an auxiliary handle, a rotation connection rod mechanically coupled with each composite operating mechanism and a test loop, and a linkage element is in mutual mechanical connection and linkage with the auxiliary handle of the auxiliary trip mechanism of the residual current trip device and the handles of each composite operating mechanism at the two sides. By the low-voltage circuit breaker, conductive loop of the circuit breaker pole is effectively reduced, rated current specification can be expanded into 40A, and the width is reduced by nearly one third compared with a spliced product.
Description
Technical field
The present invention relates to a kind of low-voltage circuit breaker; particularly a kind of miniaturization integral type multipole circuit breaker that contains residual current action breaker with overcurrent protection; this circuit breaker is by three utmost points; or three utmost point four lines, or four-pole circuit breaker unit module and the module-integrated composition of residual current trip gear.
Background technology
The generally multipole residual current action breaker with overcurrent protection, as name is called the Chinese patent CN88102711 of " modular breaker that auxiliary trip unit combines with multipole circuit breaker unit " and name, to be called the Chinese patent CN95109668 etc. of " multipole differential circuit breaker " described, all to adopt assembled structure, this series products is generally according to user's user demand, by the circuit breaker combination of different numbers of poles, and assembled with the residual current trip gear adapting in a side of circuit breaker composite module, form the multipole residual current action breaker with overcurrent protection.This series products volume is large, particularly in width dimensions direction, take more installing space, causing terminal control case to install back way under same volume condition reduces, install back way requirement in order to meet, can only increase terminal control box number or increase terminal control case size, this has brought to user, and product consumptive material is many, use cost increases and lower installation convenience.
Part offshore company has released the multipole residual current action breaker of miniaturization integrated strip overcurrent protection in recent years; this series products is by breaker unit and the residual current trip gear that is still placed on breaker unit one side is made into integration; main by the Miniaturization Design to the each construction module that forms two kinds of devices, realize the compression in the size of 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 to a side of breaker module, this layout structure and connected mode make with the electric loop of the breaker unit of the utmost point of residual current trip gear apart from each other longer, and electrical connection is many, wire structures is complicated, not only make the operation of product use power consumption large, and take more expensive real estate, thereby cause product current specification can not do (maximum is no more than 25A) greatly; On the other hand, the breaker unit loop of each utmost point is complicated and be connected more difficultly through the Wiring technique of the wire of the zero sequence current mutual inductor of residual current trip gear, not only makes thus production cost raising, but also exists state space to 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, the existing multipole residual current action breaker product with overcurrent protection is no matter be assembled structure, or integral structure, substantially all continued to use the principle of assembled structure, it is very difficult wanting further to strengthen current specification reduced volume, because the miniaturization of low-voltage circuit breaker was exactly the contradiction of a pair of mutual restriction with large electric current development trend originally, for example, 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 large current specification, the current specification that particularly cannot meet increasing user's proposition reaches the user demand of the low-voltage circuit breaker miniaturization integral type with residual current trip gear of 40A.
Summary of the invention
The object of the invention is to overcome the defect of above-mentioned prior art, provide that a kind of volume is little, compact conformation, the more rational low-voltage circuit breaker with residual current trip gear of layout, not only rated current specification can extend to 40A, simultaneously without the volume that increases miniaturization integrated breaker, and improve Product Assembly convenience.
For achieving the above object, the present invention has adopted following technical scheme.
A kind of low-voltage circuit breaker with residual current trip gear, in its insulative casing 8, include multiple circuit breakers poles that are arranged side by side and a residual current trip gear, each circuit breakers pole comprises a pair of input, output wiring terminal (10 and 11, 20 and 21, 30 and 31, 40 and 41), an electromagnetic tripping apparatus (14 or 53) to short circuit current sensitivity, a thermal release device (26 or 60) to overload current sensitivity, one is fixed on entirety and moulds the fixed contact 22 on shell, a moving contact 23 coordinating with fixed contact closure/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, two adjacent circuit breakers poles of every side share a composition operation mechanism controls two to moving, the closed and disconnected of fixed contact, each composition operation mechanism is provided with a handle 13, one is provided with the rotor plate 54 of the contact coupling mechanism of two moving contacts 23 of its two adjacent circuit breakers poles that drive on it, be pivoted on a trip link 24 and a trip(ping) bar 55 on this rotor plate 54.Described residual current trip gear comprise a residual current monitoring element, electromagnetic relay 42, auxiliary disengaging mechanism with assist handle 29, one with pivot link 35 and a test loop 49 of described each composition operation mechanism mechanical couplings.A STATEMENT OF FEDERALLY SPONSORED 15, the mutual mechanical attachment linkage of handle 13 of the each composition operation mechanism of the assist handle 29 of the auxiliary disengaging mechanism of it and described residual current trip gear and both sides.
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 two right circuit breakers poles of the every pair of circuit breakers pole share a composition operation mechanism, described residual current trip gear be arranged side by side two pairs of circuit breakers poles between; Or, described circuit breakers pole is 3, wherein two circuit breakers poles circuit breakers pole pair that partners, two right circuit breakers poles of this circuit breakers pole share a composition operation mechanism, the private operating mechanism of remaining single circuit breakers pole, described residual current trip gear is arranged side by side between described circuit breakers pole pair and single circuit breakers pole.
Further improve again as of the present invention, described circuit breaker also comprises a drive rod 28 that 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.
Further improve again as of the present invention, the pivot link 35 of described residual current trip gear is provided with can be simultaneously and the mechanical couplings structure of short circuit tripping operation short column (the 50 and 56) coordinated of the composition operation mechanism of the circuit breakers pole of adjacent both sides.
Further improve again as of the present invention, in described insulative casing 8, be provided with multiple dividing plates side by side, by dividing plate at the multiple chambers side by side of the interior formation of insulative casing 8, in chamber in the middle of residual current trip gear is arranged on, a circuit breakers pole is installed respectively in each chamber of its both sides.
Further improve 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, be pivoted on two short circuits tripping operation short columns (50 and 56) that two electromagnetic tripping apparatus (14 and 53) that trip(ping) bar 55 on rotor plate 54 is provided with two adjacent circuit breakers poles controlling with it coordinate, on trip(ping) bar 55, be also provided with the two overload trip short columns (58 and 59) that two thermal release devices (26 and 60) of two adjacent circuit breakers poles controlling with it coordinate, between described trip link 24 and trip(ping) bar 55, be provided with mechanical interlocking 17, 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.
Further improve 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 mechanically co-operating of composition operation mechanism of auxiliary disengaging mechanism and pivot link 35 and both sides circuit breakers pole.
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 is two short circuit tripping operation short column (50 and 56) mechanical couplings with the Liang Ge composition operation mechanism of both sides circuit breakers pole by pivot link 35.
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.
Further improve again as of the present invention, the perforate that electric connecting process is used is arranged on the bottom of the corresponding installation site of residual current trip gear of described insulative casing 8, is preferably provided with a dismountable block of being convenient to electromagnetic relay 42 described in installment and debugging in the bottom of electromagnetic relay 42.
Applicant is from simplifying product structure, integral layout by 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 the each utmost point of breaker unit, reduce operation power consumption, dwindle nearly 1/3rd in circuit breaker Width size compared with split mounting type product, obtain valuable space for realize strengthening current specification and dwindling small product size simultaneously, not only making is not increasing volume or is reducing under the prerequisite of volume, current specification is risen to 40A and become possibility, but also be convenient to electromagnetic relay installment and debugging, optimize production technology, improve production efficiency, save cost.
Brief description of the drawings
From the description of accompanying drawing illustrated embodiment, can more clearly find out advantages and features of the invention, wherein:
Fig. 1 is the contour structures schematic perspective view of the low-voltage circuit breaker with residual current trip gear of three utmost point four line embodiment 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 the residual current trip gear in low-voltage circuit breaker of the present invention.
Fig. 4 and Fig. 5 are respectively the schematic perspective views that the low-voltage circuit breaker shown in Fig. 1 removes each inside modules structure after shell.
Fig. 6 is the three-dimensional explosive view 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 utmost point circuit breaker of low-voltage circuit breaker of the present invention.
Embodiment
The embodiment providing below in conjunction with Fig. 1 to Fig. 9, further illustrates 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 utmost point four line embodiment shown in Fig. 1-8, referring to Fig. 1, four utmost point modules and the residual current trip gear that wherein form breaker unit are all arranged in same insulative casing 8, can make the low-voltage circuit breaker of miniaturization integral type with residual current trip gear, in its insulative casing 8, include multiple circuit breakers poles that are arranged side by side and a residual current trip gear, each circuit breakers pole comprises a pair of input, output wiring terminal (10 and 11, 20 and 21, 30 and 31, 40 and 41), an electromagnetic tripping apparatus (14 or 53) to short circuit current sensitivity, a thermal release device (26 or 60) to overload current sensitivity, one is fixed on entirety and moulds the fixed contact 22 on shell, a moving contact 23 coordinating with fixed contact closure/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, two adjacent circuit breakers poles of every side share a composition operation mechanism controls two to moving, the closed and disconnected of fixed contact, each composition operation mechanism is provided with a handle 13, one is provided with the rotor plate 54 of the contact coupling mechanism of two moving contacts 23 of its two adjacent circuit breakers poles that drive on it, be pivoted on a trip link 24 and a trip(ping) bar 55 on this rotor plate 54.Adjacent a pair of circuit breakers pole shares the closed and disconnected of a dynamic and static contact of composition operation mechanism controls, manual operation is to be with fixed handle 13 and 48 by STATEMENT OF FEDERALLY SPONSORED 15, and automatic operation is by the co-operating of 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, electromagnetic relay 42, auxiliary disengaging mechanism with assist handle 29, one with pivot link 35 and a test loop 49 of described each composition operation mechanism mechanical couplings.Particularly as shown in Figure 7, pivot link 35 is provided with the mechanical couplings structure that can coordinate with the short circuit tripping operation short column (50 and 56) of the composition operation mechanism of the circuit breakers pole of adjacent both sides the while.A STATEMENT OF FEDERALLY SPONSORED 15, the mutual mechanical attachment linkage of handle 13 of the each composition operation mechanism of the assist handle 29 of the auxiliary disengaging mechanism of it and described residual current trip gear and both sides.
The low-voltage circuit breaker with residual current trip gear of the present invention shown in Fig. 1 comprises for four circuit breakers poles that are arranged side by side of mounting strap defencive function, 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), four circuit breakers poles that are 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 utmost point four lines, and its four route is respectively three-phase firewire and a phase neutral line; Another kind is the situation of four utmost points, and its four route is respectively specific four utmost points.In order to evade the difficulty because of the uncertain accurate description for the utmost point in circuit breaker causing of service condition, the application has quoted the term of " circuit breakers pole ", so that can be from the structure accurate description of circuit breaker the concept about the utmost point circuit breaker, that is: " circuit breakers pole " described here refers to the combination of all components and parts that configure on the same route of controlling at circuit breaker, it refers to an assembly, as, one has the multipole circuit breaker of four circuit breakers poles, it can be used in the circuit of three utmost point four lines or four utmost points, and one have the multipole circuit breaker of three circuit breakers poles, it can be used for two utmost point three line (live wires, the neutral line, ground wire) or the circuit of three utmost points (three-phase firewire) 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 comprising 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 one of a breaker unit is moulded shell, as moulded shell by four 5 assembled of multipole circuit breaker needs that comprise residual current tripping function of breaker unit, and referring to Fig. 1,2,3, the present invention is no matter the number of circuit breakers pole is how many, only have an overall insulative casing 8, dwindle nearly 1/3rd at the more existing split mounting type product of circuit breaker Width size thus.For the ease of installing and raising insulation isolation performance, in described insulative casing 8, be provided with multiple dividing plate (not shown)s side by side, by dividing plate at the multiple chambers side by side of the interior formation of insulative casing 8, a circuit breakers pole is installed respectively, in the chamber in the middle of residual current trip gear is arranged in each chamber of both sides.Obviously,, because each circuit breakers pole has identical structure, the chamber that therefore circuit breakers pole is respectively installed is preferably of similar shape and size.
In Fig. 4,5, illustrate that residual current trip gear is arranged side by side the integral layout structure in the centre of four circuit breakers poles, for three utmost point products, the extremely adjacent layout of the A utmost point and B, residual current trip gear is arranged between the AB utmost point and the C utmost point; For three grade of four line or four utmost point products, the extremely adjacent layout of the A utmost point and B, the extremely adjacent layout of the C utmost point and N, and AB and CN are symmetrically distributed in residual current trip gear both sides.Referring to Fig. 1,4,5, multiple circuit breakers pole of the present invention is installed in overall insulative casing 8 in the mode being arranged side by side, and, residual current trip gear is arranged on the centre of the multiple circuit breakers poles that are arranged side by side, in the middle of so-called, the residual current trip gear of distinguishing prior art is completely arranged on the structure on a side of breaker unit (for example right side).In order to make, wiring in this circuit breaker is the shortest and electric connection is minimum, can also realize the effect that two circuit breakers poles share a composition operation mechanism simultaneously, in the middle of this is so-called, also refer to following preferable layout structure: in the situation that comprising 4 circuit breakers poles, form two pairs of circuit breakers poles pair in combination of two mode, two right circuit breakers poles of the every pair of circuit breakers pole share a composition operation mechanism, residual current trip gear be arranged side by side two pairs of circuit breakers poles between (as shown in Figure 4, Figure 5).In the situation that comprising 3 circuit breakers poles, wherein two circuit breakers poles circuit breakers pole pair that partners, 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 arranged 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 that are arranged side by side, to realize strengthening current specification and dwindling the key means of small product size, but realize this integral layout structure, need to complete the control procedure of conversion between the structure, wire structures, five states (combined floodgate, separating brake, short circuit tripping operation, overload trip, residual current tripping operation) of integral layout planning, related components (particularly operating mechanism) and redesign and the OVERALL OPTIMIZA-TION DESIGN FOR of transmission process.
Referring to 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 wherein action of any one handle all can drive remaining all handle action here.Can STATEMENT OF FEDERALLY SPONSORED 15 be placed in by artificial or mechanical mode to 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 is also to comprise a drive rod 28 that 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 concrete draw bail of drive rod 28 connections described herein refers to: on the handle 13 of each composition operation mechanism, have bar hole (in figure not mark), drive rod 28 can insert described bar hole.Refer to that by the handle 13 of this connection Shi Ge composition operation mechanism and 29 interlocks of the assist handle of auxiliary disengaging mechanism the wherein action of any one handle all can drive remaining all handle action.In the situation that circuit breakers pole is more, increase drive rod 28 particularly important.Because the present invention has adopted the technology of the handle 13 of composition operation mechanism, can significantly reduce the quantity of handle 13, thereby make the Installation and Debugging that increase drive rod 28 become very easy with respect to prior art.
Referring to 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 being pivoted on insulative casing 8, a rotor plate 54 being pivoted on insulative casing 8, a trip link 24 being pivoted on rotor plate 54, one respectively with the U-shaped bar 52 of handle 13 and trip link 24 hinge-coupled, a trip(ping) bar 55 being pivoted on rotor plate 54, an energy-stored spring (not shown) and a back-moving spring (not shown), between trip link 24 and trip(ping) bar 55, be provided with mechanical interlocking 17, 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 that its two adjacent circuit breakers poles that drive are installed, trip(ping) bar 55 is provided with two short circuits tripping operation short columns (50 and 56) of two electromagnetic tripping apparatus 14 and 53 coordinated of the circuit breakers pole adjacent with its two of controlling, and is also provided with the two overload trip short columns (58 and 59) that two thermal release devices (26 and 60) of two adjacent circuit breakers poles controlling with it coordinate on trip(ping) bar 55.The principle of mechanical interlocking 17 and structure adopt can realizing of known type, it carries out locking and release conversion between trip link 24 and trip(ping) bar 55 under the control of trip(ping) bar 55, under lock-out state, allow composition operation mechanism to carry out closing operation, its release causes the tripping operation of composition operation mechanical unlocking.On rotor plate 54 for the contact coupling mechanism of two moving contacts 23 is installed, preferably adopt the coupling mechanism with excess of stroke function.Distinguish with the maximum of prior art is that the rotor plate of prior art is the moving contact that a utmost point is installed, and two moving contacts of two circuit breakers poles are installed on rotor plate of the present invention 54.With other difference of prior art 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).
Referring to Fig. 3 and Fig. 6, described auxiliary disengaging mechanism can have multiple concrete structure scheme, a kind of preferred scheme is 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 (not shown) and spring-assisted reduction (not shown).The structure of auxiliary disengaging mechanism and principle and composition operation mechanism are similar, different is that auxiliary rotary plate 34 is without moving contact is installed, snap close 36 and electromagnetic relay 42 mechanical couplings, auxiliary rotary plate 34 is two short circuit tripping operation short column (50 and 56) mechanical couplings with the Liang Ge composition operation mechanism of its both sides circuit breakers pole by pivot link 35.
Referring to 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 forms and electrically connects with circuit breakers pole, secondary winding connects with electromagnetic relay 42, and electromagnetic relay 42 is by the mechanically co-operating of composition operation mechanism of auxiliary disengaging mechanism and pivot link 35 and both sides circuit breakers pole.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 fexible conductor of a circuit breakers pole configuration, 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 minimum effect of optimization of the shortest, the electric connection of wiring distance.As shown in Figure 9, it also can make wiring distance and electric connection further optimize to an electrically connected preferred embodiment of each circuit breakers pole.
Referring to Fig. 3, in order further to optimize wiring and mounting and testing technique, a kind of preferred scheme is, bottom in the residual current trip gear installation site of insulative casing 8 is provided with the perforate that an electric connecting process is used, preferably be provided with a dismountable block 43 in the bottom of residual current trip gear part electromagnetic relay 42, when electromagnetic relay 42 is installed and is connected with described secondary winding, complete after parameter testing, be slidably installed and put in place by described perforate, then use a block 43 by airtight 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 mechanically co-operating of both sides circuit breaker operation mechanism 5.
The following describes the operating process of the low-voltage circuit breaker with residual current trip gear of the present invention.
Breaker closing:
When the clockwise promotion of device STATEMENT OF FEDERALLY SPONSORED 15 is rotated to make position manually or automatically, STATEMENT OF FEDERALLY SPONSORED 15 driving handles 13 and 48 drive U-shaped bar 52 and trip link 24 are rotated counterclockwise around axle, trip link 24 is coupled to form a mechanical interlocking 17 with trip(ping) bar 55, continue to promote STATEMENT OF FEDERALLY SPONSORED 15 and make rotor plate 54 clockwise rotate and drive contact supporting plate together to rotate around axle, cause contact 22,23 contacts in the close position.In promotion STATEMENT OF FEDERALLY SPONSORED 15 rotation processes, drive the handle 29 of residual current trip gear to clockwise rotate around axle with the drive rod 28 of handle 13 and 48 couplings, drive U-shaped bar 33 and release lever 51 is rotated counterclockwise around axle, release lever 51 is coupled to form a mechanical interlocking (not shown) with snap close 36, continuing to promote STATEMENT OF FEDERALLY SPONSORED 15 makes rotor plate 34 clockwise rotate around axle, in the time that the contact of the sound contact of circuit breakers pole is also in the close position, the tripping mechanism of residual current trip gear completes energy storage self-locking, indication window 12 display white shown in Fig. 1.
Circuit breaker disconnects:
When the counterclockwise promotion of device STATEMENT OF FEDERALLY SPONSORED 15 is rotated to open position manually or automatically, handle 13 and 48 drives U-shaped bar 52 and trip link 24 is moved clockwise around axle, simultaneously, operating mechanism energy-stored spring (not shown) releases energy, make rotor plate 54 rotate counterclockwise and drive contact supporting plate together to rotate, cause contact 22,23 (all the other are not shown) 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.
In the time there is short circuit current in circuit, electromagnetic tripping apparatus 14 or 53 actions, 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 mechanical interlocking 17 releases that trip(ping) bar 55 and trip link 24 are formed, 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 in open position.The tripping mechanism of residual current trip gear is in energy storage state, indication window 12 display white.
In the time 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, mechanical interlocking 17 releases that trip(ping) bar 55 and trip link 24 are formed, 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 in open position.The tripping mechanism of residual current trip gear is in energy storage state, indication window 12 display white.
When occurring residual current in circuit and reaching operating value or press test button 16 produces when residual current test loop, the signal of telecommunication that the secondary winding of residual current monitoring element produces moves electromagnetic relay 42, push rod 38 ejects, promote restoring lever 37 by counterclockwise rotating around axle 39, promoting snap close 36 counterclockwise pivots, and the chain release 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, drive the short column 50 (opposite side is not shown) of the composition operation mechanism trip(ping) bar of both sides breaker unit to move right, and make contact in open position.Be rotated counterclockwise and get back in unloading position process at rotor plate 34, become redness with the colour code of rotor plate one by the white corresponding with indication window 12, the indication window 12 shown in Fig. 1 shows red.
Above-described embodiment is available to those of ordinary skill in the art and realizes or use 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; above-described embodiment is made to various modifications or variation; thereby protection scope of the present invention do not limit by above-described embodiment, and it should be the maximum magnitude that meets the inventive features that claim mentions.
Claims (10)
1. the low-voltage circuit breaker with residual current trip gear, in its insulative casing (8), include multiple circuit breakers poles that are arranged side by side and a residual current trip gear, each circuit breakers pole comprises a pair of input, output wiring terminal (10 and 11, 20 and 21, 30 and 31, 40 and 41), an electromagnetic tripping apparatus (14 or 53) to short circuit current sensitivity, a thermal release device (26 or 60) to overload current sensitivity, one is fixed on entirety and moulds the fixed contact (22) on shell, a moving contact coordinating with fixed contact closure/disjunction (23) 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, two adjacent circuit breakers poles of every side share the closed and disconnected of a composition operation mechanism controls two to dynamic and static contact, and each composition operation mechanism is provided with rotor plate (54) that a handle (13), one be provided with the contact coupling mechanism of two moving contacts (23) of its two adjacent circuit breakers poles that drive on it, is pivoted on a trip link (24) and a trip(ping) bar (55) on this rotor plate (54);
Described residual current trip gear comprise a residual current monitoring element, an electromagnetic relay (42), auxiliary disengaging mechanism with assist handle (29), one with pivot link (35) and a test loop (49) of described each composition operation mechanism mechanical couplings;
A STATEMENT OF FEDERALLY SPONSORED (15), handle (13) the mechanical attachment linkage mutually of the each composition operation mechanism of the assist handle (29) of the auxiliary disengaging mechanism of it and described residual current trip gear and both sides.
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, two right circuit breakers poles of the every pair of circuit breakers pole share a composition operation mechanism, described residual current trip gear be arranged side by side two pairs of circuit breakers poles between; Or, described circuit breakers pole is 3, wherein two circuit breakers poles circuit breakers pole pair that partners, two right circuit breakers poles of this circuit breakers pole share a composition operation mechanism, the private operating mechanism of remaining single circuit breakers pole, described residual current trip gear is arranged 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 a drive rod (28) that 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.
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 can be simultaneously and the mechanical couplings structure of short circuit tripping operation short column (the 50 and 56) coordinated 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 plates side by side, in insulative casing (8), form multiple chambers side by side by dividing plate, in chamber in the middle of residual current trip gear is arranged on, a circuit breakers pole is installed respectively in each chamber of its both sides.
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), a U-shaped bar (52) respectively with handle (13) and trip link (24) hinge-coupled, be pivoted on two short circuits tripping operation short columns (50 and 56) that two electromagnetic tripping apparatus (14 and 53) that trip(ping) bar (55) on rotor plate (54) is provided with two adjacent circuit breakers poles controlling with it coordinate, on trip(ping) bar (55), be also provided with the two overload trip short columns (58 and 59) that two thermal release devices (26 and 60) of two adjacent circuit breakers poles controlling with it coordinate, between described trip link (24) and trip(ping) bar (55), be provided with mechanical interlocking (17), 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 mechanically co-operating of composition operation mechanism of auxiliary disengaging mechanism and pivot link (35) and both sides circuit breakers pole.
8. according to the low-voltage circuit breaker with residual current trip gear described in 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) is two short circuit tripping operation short column (50 and 56) mechanical couplings with the Liang Ge composition operation mechanism of its both sides circuit breakers pole by pivot link 35.
9. according to the low-voltage circuit breaker with residual current trip gear described in 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 that electric connecting process is used is arranged on the bottom of the corresponding installation site of residual current trip gear of described insulative casing (8), be preferably provided with a dismountable block of being convenient to electromagnetic relay (42) described in installment and debugging in the bottom of electromagnetic relay (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 |
| AU2015291699A AU2015291699B2 (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 |
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 true CN104134589A (en) | 2014-11-05 |
| CN104134589B CN104134589B (en) | 2016-01-20 |
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Family Applications (1)
| 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) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016008297A1 (en) * | 2014-07-17 | 2016-01-21 | 正泰集团股份有限公司 | Low-voltage circuit breaker with residual current tripping device |
| CN110033997A (en) * | 2019-04-26 | 2019-07-19 | 珠海康恒电子设备有限公司 | A kind of low-voltage circuit breaker production line and its technique |
| 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 |
| WO2022226817A1 (en) * | 2021-04-28 | 2022-11-03 | 浙江沃斯托电气有限公司 | Residual current operated circuit breaker |
| WO2023138042A1 (en) * | 2022-01-21 | 2023-07-27 | 浙江正泰电器股份有限公司 | Circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105702537B (en) * | 2016-04-14 | 2017-12-01 | 乐清市智顺电气有限公司 | Electric protective device |
| 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 |
| 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 |
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| 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 |
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Also Published As
| Publication number | Publication date |
|---|---|
| AU2015291699B2 (en) | 2017-11-02 |
| CN104134589B (en) | 2016-01-20 |
| AU2015291699A1 (en) | 2017-03-09 |
| EP3171386A1 (en) | 2017-05-24 |
| KR20170040261A (en) | 2017-04-12 |
| EP3171386A4 (en) | 2018-04-25 |
| KR101968181B1 (en) | 2019-04-12 |
| WO2016008297A1 (en) | 2016-01-21 |
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