CN204348665U - Residual current action breaker - Google Patents
Residual current action breaker Download PDFInfo
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- CN204348665U CN204348665U CN201420732397.9U CN201420732397U CN204348665U CN 204348665 U CN204348665 U CN 204348665U CN 201420732397 U CN201420732397 U CN 201420732397U CN 204348665 U CN204348665 U CN 204348665U
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Abstract
Residual current action breaker, comprise pedestal and be arranged on each pole conducting system in pedestal, every pole conducting system comprises end of incoming cables joint cover, leading-out terminal joint cover, fixed contact and moving contact, leading-out terminal joint cover is connected with moving contact by coupling assembling, a zero sequence current mutual inductor is arranged between leading-out terminal joint cover and moving contact, and the coupling assembling of each pole conducting system all connects with the moving contact of corresponding pole through after described zero sequence current mutual inductor; Multiple 7th mounting grooves of the leading-out terminal joint cover of the installation be arranged side by side each pole conducting system are provided with in pedestal one end, be provided with separately from baffle plate in the 7th mounting groove that the instrument transformer through hole with zero sequence current mutual inductor is oppositely arranged, on baffle plate, be provided with the connector baffle plate extended to zero sequence current mutual inductor direction separately.Residual current action breaker of the present utility model is provided with separately from baffle plate, both can play separately from, shell protection effect can be played again, and easy to assembly.
Description
Technical field
The utility model belongs to Low Voltage Electrical Apparatus, relates to a kind of residual current action breaker.
Background technology
Along with the increase of low voltage electric network capacity, rapidly increase the demand of low-voltage circuit breaker, simultaneously more and more higher to the requirement of circuit breaker, market competition is also more fierce.To the entirety requirement of low-voltage circuit breaker be now: short circuit breaking capacity is high, volume is little, therefore in order to extinguish the arc energy that large short circuit current produces, can not strengthen arbitrarily the size of arc control device, namely under certain arc control device volume, the best arc-suppression function must have been studied.
In order to improve short circuit breaking capacity, what generally adopt now has following several method:
1) zero arcing formula arc control device, i.e. closed arc control device, comprise molded case, arc extinguishing grid pieces and dynamic/static contact etc., its cost of manufacture is higher, and assembly difficulty is large, economy and navigability poor, be not suitable for most of low-voltage circuit breaker product.
2) arc control device adopt traditional grating arc-extinguishing chamber, and arc control device lead arc plate with a slice.Continue striking during the large short circuit current of this arc control device system disjunction and arc blowout effect is poor, especially striking effect, cause dynamic/static contact scaling loss serious, even there will be no power phenomenon, extreme influence short circuit breaking capacity.
3) arc control device adopt traditional grating arc-extinguishing chamber, and arc control device are not with and are led arc plate, rivet a magnetic conductor and rivet or weld a slice at the horizontal plane of stationary contact bar welding fixed contact and lead arc plate below stationary contact bar.Although this arc control device system can improve arc control device arc extinguishing ability, its processing technology is loaded down with trivial details, and cost of manufacture is higher; This kind of structural design in addition, due to riveted joint or be welded on stationary contact bar, easily makes fixed contact scaling loss during the large short circuit current of disjunction, and can affect the useful life of product.
And current three poles or each phase conducting system of four poles (with N phase) residual current action breaker all prevent phase fault by the mode being wound around insulating tape (or cover heat-shrinkable tube); But in production assembling and transportation, there will be damage in insulation or obscission due to being wound around insulating tape (or cover heat-shrinkable tube) unavoidably, such product in use, can phase fault be there is in the impact by environmental factor, cause interiors of products to burn, threaten the person or property safety.Although portioned product also considers increase phase partition, existing phase partition adds assembly difficulty and intensity on the one hand, cannot play the buffer action of the leading-out terminal joint cover connect with conducting system on the other hand simultaneously.
In addition, the reliability of the electric sub-member plate work of residual current action breaker directly affects the reliability of residual current protecting function.The quality of electric sub-member plate is not only closely related with the layout of pcb board, is also closely connected with the safeguard procedures of electric sub-member plate.Due to complexity and the diversity of industry park plan environment, especially relative humidity, more stricter than mold cased circuit breaker to the environmental suitability test of residual current action breaker, be also affect one of residual current action breaker functional reliability most important factor.Therefore, for residual current action breaker, how to carry out the protection against the tide work of electronic building brick plate portion, seem particularly important.Current electric sub-member plate is all mounted on support, and electric sub-member plate need snap in support, and assembling is inconvenient, substantially can not play protection against the tide and insulating effect, can only play support fixation, and assembling is inconvenient, when especially reprocessing or check electric sub-member plate.In order to ensure the reliability of electric sub-member plate work, on the one hand, insulating protection measure must be increased, common way increases the insulation scraps of paper, electric sub-member plate and conducting system are separated, so not only there is potential safety hazard but also add operational sequence, operation easier greatly, particularly unfavorable to lean production.On the other hand, must moisture protection be carried out, general adopt embedding 704 silica gel or brushing insulating varnish or three anti-paints.Embedding 704 silica gel productive temp is slow, is not suitable for producing in enormous quantities, and is unfavorable for reprocessing, and production scene problem not easily finds to discover; One-sided brushing insulating varnish or three anti-paints, if product environment for use is comparatively moist, the time one is long, and insulating varnish or three anti-paints, once aging, just thoroughly lose moistureproof barrier, very easily cause electric sub-member plate internal short-circuit, causes electric sub-member plate to burn phenomenon and occurs.
Summary of the invention
The purpose of this utility model is the defect overcoming prior art, provides a kind of structure simple, the residual current action breaker that reliability is high.
For achieving the above object, the utility model have employed following technical scheme:
A kind of residual current action breaker, the each pole conducting system comprising pedestal 1 and be arranged in pedestal 1, every pole conducting system comprises the end of incoming cables joint cover 6 and leading-out terminal joint cover 7 that are separately positioned on pedestal 1 two ends, also comprise the fixed contact 3 be connected with end of incoming cables joint cover and the moving contact 2 be connected with leading-out terminal joint cover 7, leading-out terminal joint cover 7 is connected with moving contact 2 by coupling assembling 8, a zero sequence current mutual inductor 5 is arranged between leading-out terminal joint cover 7 and moving contact 2, the coupling assembling 8 of each pole conducting system all connects with the moving contact 2 of corresponding pole through after described zero sequence current mutual inductor 5, multiple 7th mounting grooves 17 of the leading-out terminal joint cover 7 of the installation be arranged side by side each pole conducting system are provided with in pedestal 1 one end, be provided with in the 7th mounting groove 17 that the instrument transformer through hole 51 with zero sequence current mutual inductor 5 is oppositely arranged each pole conducting system of leading-out terminal joint cover and base interior is isolated separately from baffle plate 18, on baffle plate 18, to be provided with the connector baffle plate 182 of coupling assembling 8 of the isolation each pole conducting system extended to zero sequence current mutual inductor 5 direction separately.
Further, described comprise the isolation flat part 181 of being isolated by each pole conducting system of leading-out terminal joint cover and base interior separately from baffle plate 18, on isolation flat part 181, longitudinal extension goes out two connector baffle plates 182, is provided with brace opening 183 between two connector baffle plates 182.
Further, described comprise the isolation flat part 181 of being isolated by each pole conducting system of leading-out terminal joint cover and base interior separately from baffle plate 18, on isolation flat part 181, longitudinal extension goes out three connector baffle plates 182.
Further, the sidewall of the 7th mounting groove 17 both sides is provided with installation separately from the 7th stopper slot 172 of baffle plate 18.
Further, two connector baffle plates 182 isolate inclined plane 184 by extending to form with zero sequence current mutual inductor 5 direction in the middle part of isolation flat part 181 of isolation flat part 181 both sides inclination.
Further, the coupling assembling 8 of each pole conducting system comprises the first connector 8A, the second connector 8B, the 3rd connector 8C through zero sequence current mutual inductor 5 respectively; The first described connector 8A, the 3rd connector 8C become U-shaped structure, and the base of the base of the U-shaped structure of the first connector 8A and the U-shaped structure of the 3rd connector 8C is passed from the both sides of instrument transformer through hole 51 respectively; Second connector 8B slabbing structure, that tilts from lower to upper passes in the middle part of instrument transformer through hole 51; Be provided with separately from the connector baffle plate 182 of baffle plate 18 between the base of the U-shaped structure of the first connector 8A and the second connector 8B, be provided with between the base of the U-shaped structure of the 3rd connector 8C and the second connector 8B separately from the connector baffle plate 182 of baffle plate 18.
Further, also comprise the 4th connector 8N through zero sequence current mutual inductor 5,4th connector 8N becomes U-shaped structure, two sides of the U-shaped structure of the 4th connector 8N shift to install, what the base of U-shaped structure tilted from top to bottom passes from instrument transformer through hole 51, and the base of the U-shaped structure of the 4th connector 8N is between the base of the U-shaped structure of the 3rd connector 8C and the second connector 8B; Be provided with between the base of the U-shaped structure of the 4th connector 8N and the second connector 8B separately from the connector baffle plate 182 of baffle plate 18.
Further, fixed contact 3 is provided with arc control device 4, described arc control device 4 comprise the stacked multiple arc extinguishing grid pieces 42 be arranged between two sidewalls 43 in interval, gap is provided with between multiple arc extinguishing grid pieces 42, arc control device 4 also comprise the lamination be arranged between two sidewalls 43 and lead arc trigger structure 41, the below that arc trigger structure 41 is arranged on multiple arc extinguishing grid pieces 42 led by described lamination, lamination is led arc trigger structure 41 and is comprised two grid 411 be superimposed, two grid 411 are for being positioned at top near the upper grid 413 of multiple arc extinguishing grid pieces 42 and the lower grid 414 being positioned at below, upper grid 413 is provided with leads arc plate 412.
Further, one end of each arc extinguishing grid pieces 42 is provided with the first opening 421 of inverted V-shaped or U-shaped structure, and the other end is provided with the arc groove 422 forming air flue.
Further, shown end, fixed contact 3 one end is provided with fixed contact 31, fixed contact 3 other end is connected to form staggered floor construction by the stage portion 32 vertical with fixed contact 3 with end of incoming cables joint cover 6, stage portion 32 is provided with and dodges through hole 33, described fixed contact 3, stage portion 32 and end of incoming cables joint cover 6 are one-body molded; Described contact supporting assembly 9 comprises multiple contact support 91 being provided with moving contact 2 and the rotating shaft 92 be arranged between adjacent contact support 91, and contact supporting assembly 9 is arranged in pedestal 1 by rotating shaft 92; End, moving contact 2 one end is provided with moving contact 21, and the other end is supported on 91 by the contact that is arranged on of the flexible member excess of stroke; The operating mechanism of circuit breaker can rotate with moving contact support component 9 combined floodgate and separating brake that realize circuit breaker of being contacting and separating making the fixed contact of the moving contact of moving contact 2 and fixed contact 3.
Residual current action breaker of the present utility model is provided with separately from baffle plate, both can play separately from, prevent the effect of interiors of products phase fault, shell protection effect can be played again; Make without the need to being wound around insulating tape on coupling assembling, and structure is simple, easy to assembly.In addition, the arc control device of residual current action breaker of the present utility model are provided with lamination and lead arc trigger structure, striking and arc-rupturing capacity strong.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model residual current action breaker;
Fig. 2 is the structural representation of the utility model fixed contact;
Fig. 3 is the structural representation of the utility model contact supporting assembly;
Fig. 4 is the structural representation of the utility model arc control device;
Fig. 5 is the structural representation of the utility model arc control device;
Fig. 6 is the structural representation that arc trigger structure led by the lamination of the utility model arc control device;
Fig. 7 is the structural representation of the utility model outlet side conducting system;
Fig. 8 is another structural representation of the utility model outlet side conducting system;
Fig. 9 is another structural representation of the utility model outlet side conducting system;
Figure 10 is another structural representation of the utility model outlet side conducting system;
Figure 11 is that the utility model is separately from the structural representation of baffle plate;
Figure 12 is that the utility model is separately from the structural representation of another angle of baffle plate;
Figure 13 is the structural representation of the utility model pedestal;
Figure 14 is the structural representation of the utility model wiring board case;
Figure 15 is the structural representation of the over body case of the utility model wiring board case;
Figure 16 is the structural representation of the case cover plate of the utility model wiring board case.
Embodiment
Below in conjunction with the embodiment that accompanying drawing 1 to 16 provides, further illustrate the embodiment of residual current action breaker of the present utility model.Residual current action breaker of the present utility model is not limited to the description of following examples.
As shown in Figure 1, each pole conducting system that residual current action breaker comprises pedestal 1 and is arranged in pedestal 1, every pole conducting system comprises the end of incoming cables joint cover 6 and leading-out terminal joint cover 7 that are separately positioned on pedestal 1 two ends, also comprise the fixed contact 3 be connected with end of incoming cables joint cover and the moving contact 2 be connected with leading-out terminal joint cover 7, moving contact 2 is arranged on contact supporting assembly 9, and leading-out terminal joint cover 7 is connected with moving contact 2 by coupling assembling 8; The setting corresponding with the fixed contact on fixed contact 3 of moving contact on moving contact 2, fixed contact 3 is provided with arc control device 4, and the operating mechanism band moving contact support component 9 of circuit breaker rotates the combined floodgate and separating brake that realize circuit breaker of being contacting and separating making the fixed contact of the moving contact of moving contact 2 and fixed contact 3.A zero sequence current mutual inductor 5 is arranged between leading-out terminal joint cover 7 and moving contact 2, and the coupling assembling 8 of each pole conducting system all connects with the moving contact 2 of corresponding pole through after described zero sequence current mutual inductor 5; Zero sequence current mutual inductor 5 is provided with the wiring board case 13 installing electric sub-member plate, and electric sub-member plate is electrically connected with zero sequence current mutual inductor 5.When having fault current in protected circuit or the person gets an electric shock; as long as fault current reaches operating current value of adjusting; the output signal of the secondary winding of zero sequence current mutual inductor just triggers controlled silicon conducting; and make residual current action breaker action by leakage tripping device, thus cut off the electricity supply and play fault current and electrical shock protection effect.The residual current action breaker of the present embodiment is four-pole circuit breaker, comprise four pole conducting systems, be respectively A pole conducting system, B pole conducting system, C pole conducting system and N pole conducting system, certain the utility model also can be three-pole breaker or the circuit breaker with other number of poles.
As shown in Figure 2, shown end, fixed contact 3 one end is provided with fixed contact 31, fixed contact 3 other end is connected to form staggered floor construction by the stage portion 32 vertical with fixed contact 3 with end of incoming cables joint cover 6, stage portion 32 is provided with and dodges through hole 33, described fixed contact 3, stage portion 32 and end of incoming cables joint cover 6 are one-body molded.
As shown in Figure 3, described contact supporting assembly 9 comprises multiple contact support 91 being provided with moving contact 2 and the rotating shaft 92 be arranged between adjacent contact support 91, and contact supporting assembly 9 is arranged in pedestal 1 by rotating shaft 92; End, moving contact 2 one end is provided with moving contact 21, and the other end is supported on 91 by the contact that is arranged on of the flexible member excess of stroke; The operating mechanism of circuit breaker can rotate with moving contact support component 9 combined floodgate and separating brake that realize circuit breaker of being contacting and separating making the fixed contact of the moving contact of moving contact 2 and fixed contact 3.
As Figure 4-Figure 6, described arc control device 4 comprise the stacked multiple arc extinguishing grid pieces 42 be arranged between two sidewalls 43 in interval, are provided with gap between multiple arc extinguishing grid pieces 42; Arc control device 4 also comprise the lamination be arranged between two sidewalls 43 and lead arc trigger structure 41, described lamination lead arc trigger structure 41 comprise multiple grid 411 of being superimposed and be connected with multiple grid 411 lead arc plate 412.
As illustrated in figures 4-5, one end of each arc extinguishing grid pieces 42 is provided with the first opening 421 of inverted V-shaped or U-shaped structure, the other end is provided with the arc groove 422 forming air flue, multiple arc extinguishing grid pieces 42 is riveted between two of the arc control device sidewall 43 with riveted holes successively, upper and lower arc extinguishing grid pieces 42 staggers, and the spacing between arc extinguishing grid pieces 42 is at 2 ~ 6mm; Be provided with lamination in the below of multiple arc extinguishing grid pieces 42 and lead arc trigger structure 41, lamination is led arc trigger structure 41 and is comprised two grid 411 be superimposed, one end of each grid 411 is provided with the opening of inverted V-shaped or U-shaped structure, the grid 411 above being positioned at is provided with leads arc plate 412 in two grid 411.Described arc control device 4 side is the wobble channel 45 formed by the first opening 421 of multiple arc extinguishing grid pieces 42 and the opening of multiple grid 411, opposite side is provided with the air flue 46 formed by the arc groove 422 of multiple arc extinguishing grid pieces 42, leads the installation passage 44 being provided with below arc trigger structure 41 and allowing fixed contact 3 to pass at lamination; One end that fixed contact 3 is provided with fixed contact is arranged in arc control device 4 through installing passage 44, and one end that moving contact 2 is provided with moving contact swings in wobble channel 45, and the closed and disjunction of dynamic/static contact all completes in arc control device 4, effectively can improve arc extinction performance; And air flue 46 can effectively prevent electric arc from rebounding, thus avoid causing arc reignition and moving contact root burning phenomenon to occur.Fixed contact 3 dodges the volume reducing fixed contact 3 while through hole 33 makes fixed contact can extend into arc control device inside as much as possible.
As shown in Figure 6, lamination is led arc trigger structure 41 and is comprised two grid, 411, two grid 411 of being superimposed for being positioned at top near the upper grid 413 of multiple arc extinguishing grid pieces 42 and the lower grid 414 being positioned at below, and upper grid 413 is provided with leads arc plate 412.Upper grid 413 is identical with the structure of lower grid 414 except leading arc plate 412, described arc plate 412 of leading is arranged on the inverted V-shaped of grid 413 or the bottom of U-shaped structural openings, lead the bottom side that opening that downward grid 414 direction, arc plate 412 one end is bent through lower grid 414 leans out lower grid 414, leading the angle that arc plate 412 bends is obtuse angle.
Arc control device of the present utility model are provided with lamination and lead arc trigger structure, by the grid of superposition with lead arc plate and can realize quick striking, prevention dynamic/static contact scaling loss; The effect of lasting striking and blow-out can be realized simultaneously.In addition, be provided with one or more arc groove in arc extinguishing grid pieces rear end, for arc system produces unimpeded air flue, can effectively prevent electric arc from rebounding, thus avoid causing arc reignition and moving contact root burning phenomenon to occur.Preferably, lamination is led arc trigger structure and is adopted by two grid and lead the bipack-film that arc plate forms and lead arc trigger structure, effectively can lead arc and can effectively divide arc and arc extinguishing again.
As is seen in figs 7-10, connected between the leading-out terminal joint cover 7 of each pole conducting system and moving contact 2 by coupling assembling 8, the coupling assembling 8 of each pole conducting system all connects with the moving contact 2 of corresponding pole through after described zero sequence current mutual inductor 5.The 4th leading-out terminal joint cover 7N that the leading-out terminal joint cover of each pole conducting system is respectively the first leading-out terminal joint cover 7A be connected with the A of power supply, the second leading-out terminal joint cover 7B be connected with B, the 3rd leading-out terminal joint cover 7C be connected with C and is connected with N; The coupling assembling 8 of each pole conducting system comprises through the first connector 8A, the second connector 8B of zero sequence current mutual inductor 5, the 3rd connector 8C and the 4th connector 8N respectively; First leading-out terminal joint cover 7A, the second leading-out terminal joint cover 7B, the 3rd leading-out terminal joint cover 7C are connected with the moving contact 2 of corresponding pole with the 4th connector 8N respectively by the first connector 8A, the second connector 8B, the 3rd connector 8C with the 4th leading-out terminal joint cover 7N; If the 4th leading-out terminal joint cover 7N and the 4th connector 8N also can not be provided with for three-pole breaker.The second described leading-out terminal joint cover 7B and the instrument transformer through hole 51 of zero sequence current mutual inductor 5 are oppositely arranged, second leading-out terminal joint cover 7B is provided with each pole conducting system in the second leading-out terminal joint cover 7B and pedestal is isolated separately from baffle plate 18, above baffle plate 18, to be provided with the connector baffle plate 182 of coupling assembling 8 of the isolation each pole conducting system extended to zero sequence current mutual inductor 5 direction separately.
The first described connector 8A, the 3rd connector 8C become U-shaped structure, and the base of the base of the U-shaped structure of the first connector 8A and the U-shaped structure of the 3rd connector 8C is passed from the both sides of instrument transformer through hole 51 respectively; Second connector 8B slabbing structure, that tilts from lower to upper passes in the middle part of instrument transformer through hole 51, be provided with separately from the connector baffle plate 182 of baffle plate 18 between the base of the U-shaped structure of the first connector 8A and the second connector 8B, be provided with separately from the connector baffle plate 182 of baffle plate 18 between the base of the U-shaped structure of the 3rd connector 8C and the second connector 8B; 4th connector 8N becomes U-shaped structure, two sides of the U-shaped structure of the 4th connector 8N shift to install, what the base of U-shaped structure tilted from top to bottom passes from instrument transformer through hole 51, the base of the U-shaped structure of the 4th connector 8N, between the base of the U-shaped structure of the 3rd connector 8C and the second connector 8B, is provided with separately from the connector baffle plate 182 of baffle plate 18 between the base of the U-shaped structure of the 4th connector 8N and the second connector 8B.The structure of the coupling assembling of each pole of the present utility model conducting system effectively can ensure the creepage distance of conducting system, improves the reliability of conducting system.
As depicted in figs. 11-12, described comprise the isolation flat part 181 of being isolated by each pole conducting system of leading-out terminal joint cover and base interior separately from baffle plate 18, isolation flat part 181 is provided with the connector baffle plate 182 of the coupling assembling 8 of the isolation each pole conducting system extended to zero sequence current mutual inductor 5 direction.As shown in figure 11, on isolation flat part 181, longitudinal extension goes out two connector baffle plates 182, between two connector baffle plates 182, be provided with brace opening 183, two connector baffle plates 182 isolate inclined plane 184 by extending to form with zero sequence current mutual inductor 5 direction in the middle part of isolation flat part 181 of isolation flat part 181 both sides inclination.Described is made up from baffle plate 18 of high temperature resistant and that insulation property are good thermoplastic separately, and isolation flat part 181 is arranged on pedestal 1 isolates the conducting system of the second leading-out terminal joint cover 7B and base interior, plays the effect of leading-out terminal shell protection; Second connector 8B leans out and passes instrument transformer through hole 51 from brace opening 183, the connector baffle plate 182 of brace opening 183 both sides by the second connector 8B and other connector spaced apart, add the electric clearance between each phase conducting system and creepage distance, thus play separately from protective action, prevent internal short-circuit situation from occurring.The concrete structure being not limited to the present embodiment separately from baffle plate 18 of the present utility model, such as, can keep apart each phase conducting system with the cross type dividing plate combined of draw-in groove for cross type dividing plate or the dull and stereotyped dividing plate of two panels from baffle plate 18 separately; Connector baffle plate 182 also can be other shape and structure; Isolation flat part 181 can extend three or more connector baffle plates 182.
As shown in figure 13, the 5th mounting groove 15 installing zero sequence current mutual inductor 5 is provided with in pedestal 1, be provided with multiple 7th mounting grooves 17 of the leading-out terminal joint cover 7 of the installation be arranged side by side each pole conducting system in the side of the 5th mounting groove 15, the sidewall of the 7th mounting groove 17 both sides is provided with the 7th stopper slot 172; Described zero sequence current mutual inductor 5 is arranged in the 5th mounting groove 15, be provided with separately from baffle plate 18 by the 7th stopper slot 172 in the 7th mounting groove 17 that the instrument transformer through hole 51 with zero sequence current mutual inductor 5 is oppositely arranged, in other the 7th mounting groove 17, be provided with the 7th baffle plate (not shown) of being isolated with each pole conducting system of base interior by the leading-out terminal joint cover 7 of each pole conducting system by the 7th stopper slot 172, described 7th baffle plate is slab construction.Multiple chamber 12 is separated to form by multiple first interpolar dividing plate 111 at the opposite side of the 5th mounting groove 15; Chamber 12 comprises the 6th mounting groove 126 being installed into line end joint cover 6, and install the 4th mounting groove 124 of arc control device 4, described fixed contact 3 one end is connected with end of incoming cables joint cover 6, and the other end being provided with fixed contact stretches in the 4th mounting groove 124; First interpolar dividing plate 111 is provided with the shaft seat 119 of the matrix coordinated with the rotating shaft 92 of contact supporting assembly 9.The sidewall of the 6th mounting groove 126 both sides is provided with the 6th stopper slot 125, sixth gear plate (not shown) for the end of incoming cables joint cover 6 of each pole conducting system and each pole conducting system of base interior being isolated is arranged on pedestal 1 by the 6th stopper slot 125, and described sixth gear plate is slab construction.
The utility model is by improving the backboard of original pedestal and the structure and layout of conducting system, original plate backboard is changed into high temperature resistant and that insulation property are good thermoplastic by epoxy resin bonded fiber, on the basis of flat board, carry out longitudinal extension goes out connector baffle plate simultaneously, each phase conducting system is kept apart, both can play separately from, prevent the effect of interiors of products phase fault, shell protection effect can be played again; Making on coupling assembling without the need to being wound around insulating tape, solving prior art and preventing phase fault from easily producing the damage in insulation or the problem that comes off that occur in assembling and transportation by the mode being wound around insulating tape (or cover heat-shrinkable tube).In addition, the installation separately from baffle plate is simple and convenient, by improving pedestal, increase stopper slot, between isolate baffle plate and can insert in stopper slot corresponding to pedestal, thus the leading-out terminal joint cover of each phase conducting system connection can be kept apart, to prevent joint cover root from occurring phase fault phenomenon.
As illustrated in figures 14-16, the over body case 132 that described wiring board case 13 comprises one end open and the case cover plate 131 mated with the opening of over body case 132, be provided with the chamber 134 holding electronic circuit board in over body case 132, over body case 132 is provided with the wire lead slot 133 of wiring.Described over body case 132 one-tenth door type structure, top is provided with opening, and the case breach 135 with the form fit of zero sequence current mutual inductor 5 is formed on bottom, forms the chamber 134 holding electronic circuit board in the case column 136 of both sides.Described case cover plate 131 two ends are provided with the buckle 137 be connected with case cover plate 131, one end correspondence position that over body case 132 has opening is provided with draw-in groove, and case cover plate 131 and over body case 132 buckle are connected to form closed case isolates electronic circuit board and each pole conducting system; Be provided with the chimb 138 in the opening that can stretch into over body case 132 in case cover plate 131 surrounding, on chimb 138, the position of corresponding wire lead slot 133 is provided with chimb breach 139.During installation, the case breach 135 of wiring board case 13 is corresponding with zero sequence current mutual inductor 5 to be arranged, and is fixedly mounted in the 5th mounting groove 15 by the case column 136 of wiring board case 13 both sides.Wiring board case 13 of the present utility model not only plays installs the effect of electronic circuit board, and closed case can effectively prevent steam from entering, simultaneously also can effectively by electric sub-member plate completely and conducting system keep apart; Wiring board case 13 coordinates with zero sequence current mutual inductor 5 to be installed, compact conformation, easy-to-connect.
Described wiring board case 13 adopts high-temperature insulation thermoplastic of good performance, be injection molded into a kind of open-topped closed case with wire lead slot, electronic circuit board (not shown) can directly put into wiring board case 13, wiring board case 13 can directly insert in the 5th mounting groove 15 of pedestal simultaneously, electric sub-member plate can take out separately or put into, also can together take out with wiring board case 13 or put into, convenient for assembly or reprocess dismounting.Simultaneously when by after on case cover plate 131 and over body case 132 buckle connection cover, be the equal of the case of a sealing, can effectively prevent steam from entering, have good humidity resistance, simultaneously also can effectively by electric sub-member plate completely and conducting system keep apart, play good insulating protection effect.Certainly, the bottom of wiring board case also can be provided with opening, is fixed on after on pedestal by the closure of openings of pedestal by bottom in the corresponding draw-in groove of insertion pedestal or with screw; Wiring board case also can be cuboid or square or irregular cuboid or square case.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, some simple deduction or replace can also be made, all should be considered as belonging to protection range of the present utility model.
Claims (10)
1. a residual current action breaker, comprise pedestal (1) and be arranged on each pole conducting system in pedestal (1), every pole conducting system comprises the end of incoming cables joint cover (6) and leading-out terminal joint cover (7) that are separately positioned on pedestal (1) two ends, also comprise the fixed contact (3) be connected with end of incoming cables joint cover and the moving contact (2) be connected with leading-out terminal joint cover (7), it is characterized in that: leading-out terminal joint cover (7) is connected with moving contact (2) by coupling assembling (8), a zero sequence current mutual inductor (5) is arranged between leading-out terminal joint cover (7) and moving contact (2), the coupling assembling (8) of each pole conducting system all connects with the moving contact (2) of corresponding pole afterwards through described zero sequence current mutual inductor (5), multiple 7th mounting grooves (17) of the leading-out terminal joint cover (7) of the installation be arranged side by side each pole conducting system are provided with in pedestal (1) one end, be provided with in the 7th mounting groove (17) that the instrument transformer through hole (51) with zero sequence current mutual inductor (5) is oppositely arranged each pole conducting system of leading-out terminal joint cover and base interior is isolated separately from baffle plate (18), the connector baffle plate (182) of coupling assembling (8) of the isolation each pole conducting system extended to zero sequence current mutual inductor (5) direction is being provided with separately on baffle plate (18).
2. residual current action breaker according to claim 1, it is characterized in that: described comprise the isolation flat part (181) of being isolated by each pole conducting system of leading-out terminal joint cover and base interior separately from baffle plate (18), the upper longitudinal extension of isolation flat part (181) goes out two connector baffle plates (182), is provided with brace opening (183) between two connector baffle plates (182).
3. residual current action breaker according to claim 1, it is characterized in that: described comprise the isolation flat part (181) of being isolated by each pole conducting system of leading-out terminal joint cover and base interior separately from baffle plate (18), the upper longitudinal extension of isolation flat part (181) goes out three connector baffle plates (182).
4. residual current action breaker according to claim 1, is characterized in that: on the sidewall of the 7th mounting groove (17) both sides, be provided with installation separately from the 7th stopper slot (172) of baffle plate (18).
5. residual current action breaker according to claim 2, is characterized in that: two connector baffle plates (182) isolate inclined plane (184) by extending to form to isolation flat part (181) middle part and zero sequence current mutual inductor (5) direction of isolation flat part (181) both sides inclination.
6., according to the arbitrary described residual current action breaker of claim 1-5, it is characterized in that: the coupling assembling (8) of each pole conducting system comprises the first connector (8A), the second connector (8B), the 3rd connector (8C) through zero sequence current mutual inductor (5) respectively; Described the first connector (8A), the 3rd connector (8C) become U-shaped structure, and the base of the base of the U-shaped structure of the first connector (8A) and the U-shaped structure of the 3rd connector (8C) is passed from the both sides of instrument transformer through hole (51) respectively; Second connector (8B) slabbing structure, that tilts from lower to upper passes from instrument transformer through hole (51) middle part; Be provided with separately from the connector baffle plate (182) of baffle plate (18) between the base of the U-shaped structure of the first connector (8A) and the second connector (8B), be provided with between the base and the second connector (8B) of the U-shaped structure of the 3rd connector (8C) separately from the connector baffle plate (182) of baffle plate (18).
7. residual current action breaker according to claim 6, it is characterized in that: also comprise the 4th connector (8N) through zero sequence current mutual inductor (5), 4th connector (8N) becomes U-shaped structure, two sides of the U-shaped structure of the 4th connector (8N) shift to install, what the base of U-shaped structure tilted from top to bottom passes from instrument transformer through hole (51), between the base that the base of the U-shaped structure of the 4th connector (8N) is positioned at the U-shaped structure of the 3rd connector (8C) and the second connector (8B); Be provided with between the base and the second connector (8B) of the U-shaped structure of the 4th connector (8N) separately from the connector baffle plate (182) of baffle plate (18).
8. residual current action breaker according to claim 1, it is characterized in that: on fixed contact (3), be provided with arc control device (4), described arc control device (4) comprise the stacked multiple arc extinguishing grid pieces (42) be arranged between two sidewalls (43) in interval, multiple arc extinguishing grid pieces is provided with gap between (42), arc control device (4) also comprise the lamination be arranged between two sidewalls (43) and lead arc trigger structure (41), the below that arc trigger structure (41) is arranged on multiple arc extinguishing grid pieces (42) led by described lamination, lamination is led arc trigger structure (41) and is comprised two grid (411) be superimposed, two grid (411) are for being positioned at top near the upper grid (413) of multiple arc extinguishing grid pieces (42) and the lower grid (414) being positioned at below, upper grid (413) is provided with leads arc plate (412).
9. residual current action breaker according to claim 8, it is characterized in that: one end of each arc extinguishing grid pieces (42) is provided with first opening (421) of inverted V-shaped or U-shaped structure, the other end is provided with the arc groove (422) forming air flue.
10. residual current action breaker according to claim 1, it is characterized in that: described fixed contact (3) end, one end is provided with fixed contact (31), fixed contact (3) other end is connected to form staggered floor construction by the stage portion (32) vertical with fixed contact (3) and end of incoming cables joint cover (6), stage portion (32) is provided with and dodges through hole (33), described fixed contact (3), stage portion (32) and end of incoming cables joint cover (6) are one-body molded; Described contact supporting assembly (9) comprises multiple contact support (91) being provided with moving contact (2) and the rotating shaft (92) be arranged between adjacent contact support (91), and contact supporting assembly (9) is arranged in pedestal (1) by rotating shaft (92); Moving contact (2) end, one end is provided with moving contact (21), and the other end is arranged in contact support (91) by the flexible member excess of stroke; The operating mechanism of circuit breaker can rotate with moving contact support component (9) combined floodgate and separating brake that realize circuit breaker of being contacting and separating making the fixed contact of the moving contact of moving contact (2) and fixed contact (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420732397.9U CN204348665U (en) | 2014-11-28 | 2014-11-28 | Residual current action breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420732397.9U CN204348665U (en) | 2014-11-28 | 2014-11-28 | Residual current action breaker |
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| Publication Number | Publication Date |
|---|---|
| CN204348665U true CN204348665U (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420732397.9U Active CN204348665U (en) | 2014-11-28 | 2014-11-28 | Residual current action breaker |
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| Country | Link |
|---|---|
| CN (1) | CN204348665U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109119297A (en) * | 2018-10-15 | 2019-01-01 | 浙江天正电气股份有限公司 | A kind of leakage protection structure of breaker of plastic casing |
-
2014
- 2014-11-28 CN CN201420732397.9U patent/CN204348665U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109119297A (en) * | 2018-10-15 | 2019-01-01 | 浙江天正电气股份有限公司 | A kind of leakage protection structure of breaker of plastic casing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wenzhou Zhengtai Electrical Technology Co., Ltd Assignor: Zhejiang Chint Electrics Co.,Ltd. Contract record no.: X2020330000078 Denomination of utility model: Residual current operated circuit breaker Granted publication date: 20150520 License type: Common License Record date: 20201021 |