CN204680630U - A kind of shunt trip of circuit breaker - Google Patents
A kind of shunt trip of circuit breaker Download PDFInfo
- Publication number
- CN204680630U CN204680630U CN201520310081.5U CN201520310081U CN204680630U CN 204680630 U CN204680630 U CN 204680630U CN 201520310081 U CN201520310081 U CN 201520310081U CN 204680630 U CN204680630 U CN 204680630U
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- circuit breaker
- spring plate
- shunt
- opening coil
- shunt opening
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Abstract
The utility model discloses a kind of shunt trip of circuit breaker, and integrated installation, on Shell of circuit breaker, comprises shunt opening coil, spring plate, quiet shell fragment and resistance; After the series connection of shunt opening coil, spring plate and quiet shell fragment in access power control circuit, on spring plate, on moving contact and quiet shell fragment, fixed contact forms co-operating contact; The operating mechanism of spring plate and circuit breaker is connected, and contact is disconnected or closes, resistor coupled in parallel is connected to shunt opening coil two ends.The utility model shunt opening coil and resistance form a loop, and the energy storage of shunt opening coil by resistance absorption, thus makes the electric arc between contact extinguish at short notice, reaches the effect of fast arc extinction.
Description
Technical field
The utility model relates to breaker technical field, refers in particular to a kind of shunt trip of circuit breaker.
Background technology
The shunt trip of circuit breaker is remote operation brake separating mechanism, and shunt trip is short time duty, and shunt opening coil electrify time is generally no more than 1S, otherwise shunt opening coil can be blown.Breaker of plastic casing is for preventing shunt opening coil burnout, a series connection sensitive switch in shunt trip, when shunt trip is by armature adhesive, sensitive switch converts off-state to from closure state, the power control circuit of shunt trip is cut off, shunt opening coil is no longer energized all the time, thus avoids shunt opening coil scaling loss.After circuit breaker fastens lock again, sensitive switch comes back to make position.
In prior art, the shunt trip of circuit breaker is arranged with the form of annex usually, and namely set up shunt trip in circuit breaker side, circuit breaker is connected by connecting rod with shunt trip.The defect of described circuit breaker is:
One, when shunt trip is by armature adhesive, the action of circuit breaker operation mechanism drivening rod, connecting rod orders about sensitive switch and converts disconnection shape body to from closure state, the power control circuit of shunt trip is cut off, and in shunt trip, the action of sensitive switch lags behind the action of circuit breaker, makes shunt opening coil power power-off time delayed, cannot synchronously disconnect shunt opening coil power, jeopardize operator safety.
Two, the moment that shunt trip sensitive switch converts disconnection shape body to from closure state will produce electric arc, under direct voltage drive environment, by test, between sensitive switch contact, the arc duration reaches more than 200ms, and harm is comparatively large, causes the interlock circuit be attached thereto to burn.
In prior art, series resistance in shunt trip, utilizes resistance Limited Current to rise, and when short circuit current occurs, increasing resistance can effectively stop short circuit current to rise, thus reaches current limliting, improves breaking capacity, can not improve arc extinguishing ability.
Utility model content
The purpose of this utility model is the shunt trip providing a kind of circuit breaker, makes shunt trip realize fast arc extinction under DC driven, and disjunction response rapidly.
For reaching above-mentioned purpose, solution of the present utility model is:
A shunt trip for circuit breaker, integrated installation, on Shell of circuit breaker, comprises shunt opening coil, spring plate, quiet shell fragment and resistance; After the series connection of shunt opening coil, spring plate and quiet shell fragment in access power control circuit, on spring plate, on moving contact and quiet shell fragment, fixed contact forms co-operating contact; The operating mechanism of spring plate and circuit breaker is connected, and contact is disconnected or closes, resistor coupled in parallel is connected to shunt opening coil two ends.
Further, also comprise trace, trace is directly installed on the operating mechanism of circuit breaker, is connected with operating mechanism, and meanwhile, trace and spring plate are connected.
Further, by in fast insertion terminal access power control circuit after the series connection of shunt opening coil, spring plate and quiet shell fragment, shunt opening coil one end is connected with spring plate, the shunt opening coil other end is connected with fast insertion terminal, quiet shell fragment one end spring plate connects, the quiet shell fragment other end is connected with fast insertion terminal, and fast insertion terminal is connected with power control circuit.
Further, shunt opening coil two ends welding kesistance, resistance and shunt opening coils from parallel connection of coils.
Further, resistance is arranged on the surface of shell of circuit breaker.
After adopting such scheme, the utility model integrated installation is on Shell of circuit breaker, and namely shunt opening coil, spring plate, quiet shell fragment and resistance integrated installation are on Shell of circuit breaker, and comparatively prior art shunt trip is arranged with attachment version, more cost-saving.
In shunt opening coil two ends parallel resistance; after shunt opening coil obtains the instruction of power control circuit; shunt opening coil magnetization provides instruction to circuit breaker operation mechanism rapidly; circuit breaker operation mechanism action thus drive spring plate action; the contact that spring plate and quiet shell fragment are formed disconnects; shunt opening coil no longer includes electric current and flows through, and protection shunt opening coil is not burnt.
In direct current shunt opening is voltage-operated, due to shunt opening coils from parallel connection of coils resistance, when the contact that spring plate and quiet shell fragment are formed disconnects, shunt opening coil and resistance form a loop, the energy storage of shunt opening coil is by resistance absorption, absorb the energy storage of shunt opening coil by resistance heating, thus the electric arc between contact is extinguished at short notice, reach the effect of fast arc extinction.
The operating mechanism of the utility model spring plate and circuit breaker is connected, spring plate and operating mechanism synchronization action, and contact disconnects and being driven by circuit breaker operation mechanism, and disjunction response rapidly, better stops coil burnout phenomenon; Shunt opening coils from parallel connection of coils resistance, better controls the contact quenching time, and by the test arcing time within originally becoming 80ms more than 200ms, simultaneously because resistance is with low cost, cost is less.Simultaneously by increasing resistance, the utility model can at AC DC electric pressing operation, and not need to distinguish power positive cathode, makes installation more convenient.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of another angle of the utility model;
Fig. 3 is the utility model circuit theory schematic diagram.
Label declaration
Shunt opening coil 1 spring plate 2
Quiet shell fragment 3 trace 4
The fast insertion terminal 6 of resistance 5
Operating mechanism 7.
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in detail.
Consult shown in Fig. 1 and Fig. 3, the shunt trip of a kind of circuit breaker that the utility model discloses, comprises shunt opening coil 1, spring plate 2, quiet shell fragment 3, trace 4 and resistance 5.On-board the circuit breaker, namely shunt opening coil 1, spring plate 2, quiet shell fragment 3, trace 4 and resistance 5 integrated installation are at the outer surface of Shell of circuit breaker for integrated installation.
Shunt opening coil 1, spring plate 2 and quiet shell fragment 3 access in power control circuit (not shown) after connecting, be specially: shunt opening coil 1, spring plate 2 and quiet shell fragment 3 access in power control circuit by fast insertion terminal 6 after connecting, shunt opening coil 1 one end is connected with spring plate 2 by square silk, and shunt opening coil 1 other end is connected with fast insertion terminal 6 by square silk and wire.Quiet shell fragment 3 one end is connected with spring plate 2, and quiet shell fragment 3 other end is connected with fast insertion terminal 6 by wire, and fast insertion terminal 6 is connected with power control circuit.
On spring plate 2, on moving contact and quiet shell fragment 3, fixed contact forms co-operating contact, circuit breaker is when normally working, the contact that spring plate 2 and quiet shell fragment 3 are formed is closure state, and trace 4 one end and circuit breaker operation mechanism 7 are connected, and trace 4 other end and spring plate 4 are connected.Circuit breaker operation mechanism 7 action makes contact disconnect or closes.Resistance 5 is connected in shunt opening coil 1 two ends in parallel, welding kesistance 5 on the square silk at shunt opening coil 1 two ends.Resistance 5 is arranged on the surface of shell of circuit breaker.
The utility model shunt opening coil 1 two ends parallel resistance 5; after shunt opening coil 1 obtains electric excitation; shunt opening coil 1 orders about circuit breaker operation mechanism 7 action and threads off; circuit breaker operation mechanism 7 action thus drive spring plate 2 synchronization action; under the elastic reaction of spring plate 2; the contact that spring plate 2 and quiet shell fragment 3 are formed disconnects, and shunt opening coil 1 no longer includes electric current and flows through, and protection shunt opening coil 1 is not burnt.
After circuit breaker fastens lock again, the displacement of connecting rod 4 ejection spring plate 2 is ordered about in circuit breaker operation mechanism 7 action, and spring plate 2 and quiet shell fragment 3 come back to make position.
As shown in Figure 3, due to shunt opening coil 1 resistance 5 in parallel, when the contact that spring plate 2 and quiet shell fragment 3 are formed disconnects, shunt opening coil 1 and resistance 5 form a loop, shunt opening coil 1 energy storage is absorbed by resistance 5, absorb the energy storage of shunt opening coil by resistance heating, thus the electric arc between contact is extinguished at short notice, reach the effect of fast arc extinction.Meanwhile, when shunt opening coil continues energising, circuit breaker major loop can guarantee do not have electric current to export.
The foregoing is only preferred embodiment of the present utility model, not to the restriction of this case design, all equivalent variations done according to the design key of this case, all fall into the protection range of this case.
Claims (5)
1. a shunt trip for circuit breaker, is characterized in that: integrated installation, on Shell of circuit breaker, comprises shunt opening coil, spring plate, quiet shell fragment and resistance; After the series connection of shunt opening coil, spring plate and quiet shell fragment in access power control circuit, on spring plate, on moving contact and quiet shell fragment, fixed contact forms co-operating contact; The operating mechanism of spring plate and circuit breaker is connected, and contact is disconnected or closes, resistor coupled in parallel is connected to shunt opening coil two ends.
2. the shunt trip of a kind of circuit breaker as claimed in claim 1, is characterized in that: also comprise trace, and trace is directly installed on the operating mechanism of circuit breaker, is connected with operating mechanism, and meanwhile, trace and spring plate are connected.
3. the shunt trip of a kind of circuit breaker as claimed in claim 1, it is characterized in that: by fast insertion terminal access power control circuit after the series connection of shunt opening coil, spring plate and quiet shell fragment, shunt opening coil one end is connected with spring plate, the shunt opening coil other end is connected with fast insertion terminal, quiet shell fragment one end spring plate connects, the quiet shell fragment other end is connected with fast insertion terminal, and fast insertion terminal is connected with power control circuit.
4. the shunt trip of a kind of circuit breaker as claimed in claim 1, is characterized in that: shunt opening coil two ends welding kesistance, resistance and shunt opening coils from parallel connection of coils.
5. the shunt trip of a kind of circuit breaker as claimed in claim 1, is characterized in that: resistance is arranged on the surface of shell of circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520310081.5U CN204680630U (en) | 2015-05-14 | 2015-05-14 | A kind of shunt trip of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520310081.5U CN204680630U (en) | 2015-05-14 | 2015-05-14 | A kind of shunt trip of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204680630U true CN204680630U (en) | 2015-09-30 |
Family
ID=54180303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520310081.5U Active CN204680630U (en) | 2015-05-14 | 2015-05-14 | A kind of shunt trip of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204680630U (en) |
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2015
- 2015-05-14 CN CN201520310081.5U patent/CN204680630U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |