CN204680631U - A kind of shunt trip of circuit breaker - Google Patents
A kind of shunt trip of circuit breaker Download PDFInfo
- Publication number
- CN204680631U CN204680631U CN201520310397.4U CN201520310397U CN204680631U CN 204680631 U CN204680631 U CN 204680631U CN 201520310397 U CN201520310397 U CN 201520310397U CN 204680631 U CN204680631 U CN 204680631U
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- CN
- China
- Prior art keywords
- circuit breaker
- spring plate
- contact
- shell fragment
- shunt
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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 and quiet shell fragment; After the series connection of shunt opening coil, spring plate and quiet shell fragment in access power control circuit, on spring plate, moving contact and quiet shell fragment fixed contact form co-operating contact, the operating mechanism of spring plate and circuit breaker is connected, and contact is disconnected or closes, the contact that spring plate and quiet shell fragment are formed is placed in magnetic field.The utility model is due to the effect in arc blow-out magnetic field, and electric arc can extinguish rapidly, reaches the effect of fast arc extinction, and reliable and stable.
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.
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 and quiet shell fragment; After the series connection of shunt opening coil, spring plate and quiet shell fragment in access power control circuit, on spring plate, moving contact and quiet shell fragment fixed contact form co-operating contact, the operating mechanism of spring plate and circuit breaker is connected, and contact is disconnected or closes, the contact that spring plate and quiet shell fragment are formed is placed in magnetic field.
Further, also comprise trace, trace one end and circuit breaker operation mechanism are connected, and the trace other end and spring plate are connected.
Further, the first magnetic element is set in side, contact, the second magnetic element is set at contact opposite side, and the first magnetic element one side magnetic relative with contact with the second magnetic element is contrary.
Further, Shell of circuit breaker arranges support body, slot is formed at support body top, first magnetic element is placed in slot, the storage tank of one side opening is formed at support body bottom, and the second magnetic element is placed in storage tank through opening, covers on circuit breaker upper limit second magnetic element by outer cover.
Further, the first magnetic element and the second magnetic element are permanent magnet.
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.
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 integrated installation are on Shell of circuit breaker, and comparatively prior art shunt trip is arranged with attachment version, more cost-saving.
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.
The contact that spring plate and quiet shell fragment are formed is placed in magnetic field, in direct current shunt opening is voltage-operated, when the contact that spring plate and quiet shell fragment are formed disconnects and produces electric arc, due to the effect in arc blow-out magnetic field, electric arc can extinguish rapidly, reaches the effect of fast arc extinction, and reliable and stable.
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; Disjunction contact better controls the contact quenching time under magnetic fields, by the test arcing time within originally becoming 15ms more than 200ms, and stable performance.Meanwhile, 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 Facad structure schematic diagram of the present utility model;
Fig. 2 is structure schematic diagram of the present utility model;
Fig. 3 is another structural representation of the present utility model.
Shunt opening coil 1 spring plate 2
Quiet shell fragment 3 trace 4
Fast insertion terminal 5 operating mechanism 6
First magnetic element 71 second magnetic element 72
Housing 10 support body 101.
Embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in detail.
Consult shown in Fig. 1 to Fig. 3, the shunt trip of a kind of circuit breaker that the utility model discloses, comprise shunt opening coil 1, spring plate 2, quiet shell fragment 3 and trace 4, integrated installation is on Shell of circuit breaker 10, and namely shunt opening coil 1, spring plate 2, quiet shell fragment 3 and trace 4 integrated installation are on Shell of circuit breaker 10.
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 5 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 5 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 5 by wire, and fast insertion terminal 5 is connected with power control circuit.
On spring plate 2, moving contact and quiet shell fragment 3 upper static contact form co-operating contact, and trace 4 one end and circuit breaker operation mechanism 6 are connected, and trace 4 other end and spring plate 2 are connected.Circuit breaker operation mechanism 6 action makes contact disconnect or closes.The contact that spring plate 2 and quiet shell fragment 3 are formed is placed in magnetic field.
In ability embodiment, the first magnetic element 71 is set in side, contact, the second magnetic element 72 is set at contact opposite side, and the first magnetic element 71 one side magnetic relative with contact with the second magnetic element 72 is contrary.First magnetic element 71 and the second magnetic element 72 are preferably magnet steel.
Contact is placed between the first magnetic element 71 and the second magnetic element 72, and when spring plate 2 and the disjunction of quiet shell fragment 3 produce electric arc, electric arc, because the work in magnetic field is in order to rapid extinguishing, makes direct current pressing operation, does not need to distinguish both positive and negative polarity, makes installation more convenient.
As shown in Figure 3, Shell of circuit breaker 10 arranges support body 101, slot is formed at support body 101 top, first magnetic element 71 is placed in slot, the storage tank of one side opening is formed at support body 101 bottom, second magnetic element 72 is placed in storage tank through opening, covers on Shell of circuit breaker 10 upper limit second magnetic element 72 by outer cover (not shown).Described structure makes the first magnetic element 71 and the second magnetic element 72 installing/dismounting more for convenience.
The contact that spring plate 2 and quiet shell fragment 3 are formed is placed in magnetic field by the utility model; after shunt opening coil 1 obtains electric excitation; shunt opening coil 1 orders about circuit breaker operation mechanism 6 action and threads off; circuit breaker operation mechanism 6 action thus drive spring plate 2 synchronization action; the contact that spring plate 2 and quiet shell fragment 3 are formed disconnects; shunt opening coil 1 no longer includes electric current and flows through, and protection shunt opening coil 1 is not burnt.
Because shunt opening coil 1, spring plate 2, quiet shell fragment 3 and trace 4 integrated installation are on Shell of circuit breaker 10, circuit breaker operation mechanism 6 action drives spring plate 2 synchronization action, and the contact disjunction that spring plate 2 and quiet shell fragment 3 are formed responds rapidly.
After circuit breaker fastens lock again, the displacement of connecting rod 4 ejection spring plate 2 is ordered about in circuit breaker operation mechanism 6 action, and spring plate 2 and quiet shell fragment 3 come back to make position.
In direct current shunt opening is voltage-operated, when the contact that spring plate 2 and quiet shell fragment 3 are formed disconnects and produces electric arc, due to the effect in arc blow-out magnetic field, electric arc can extinguish rapidly, reaches the effect of fast arc extinction, and reliable and stable.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 (6)
1. a shunt trip for circuit breaker, is characterized in that: integrated installation, on Shell of circuit breaker, comprises shunt opening coil, spring plate and quiet shell fragment; After the series connection of shunt opening coil, spring plate and quiet shell fragment in access power control circuit, on spring plate, moving contact and quiet shell fragment fixed contact form co-operating contact, the operating mechanism of spring plate and circuit breaker is connected, and contact is disconnected or closes, the contact that spring plate and quiet shell fragment are formed is placed in magnetic field.
2. the shunt trip of a kind of circuit breaker as claimed in claim 1, is characterized in that: also comprise trace, and trace one end and circuit breaker operation mechanism are connected, and the trace other end 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: in side, contact, the first magnetic element is set, second magnetic element is set at contact opposite side, and the first magnetic element one side magnetic relative with contact with the second magnetic element is contrary.
4. the shunt trip of a kind of circuit breaker as claimed in claim 3, it is characterized in that: on Shell of circuit breaker, support body is set, slot is formed at support body top, first magnetic element is placed in slot, the storage tank of one side opening is formed at support body bottom, second magnetic element is placed in storage tank through opening, covers on circuit breaker upper limit second magnetic element by outer cover.
5. the shunt trip of a kind of circuit breaker as claimed in claim 3, is characterized in that: the first magnetic element and the second magnetic element are permanent magnet.
6. 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520310397.4U CN204680631U (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 |
|---|---|---|---|
| CN201520310397.4U CN204680631U (en) | 2015-05-14 | 2015-05-14 | A kind of shunt trip of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204680631U true CN204680631U (en) | 2015-09-30 |
Family
ID=54180304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520310397.4U Expired - Fee Related CN204680631U (en) | 2015-05-14 | 2015-05-14 | A kind of shunt trip of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204680631U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104851761A (en) * | 2015-05-14 | 2015-08-19 | 厦门宏发开关设备有限公司 | Shunt releasing apparatus of circuit breaker |
-
2015
- 2015-05-14 CN CN201520310397.4U patent/CN204680631U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104851761A (en) * | 2015-05-14 | 2015-08-19 | 厦门宏发开关设备有限公司 | Shunt releasing apparatus of circuit breaker |
| CN104851761B (en) * | 2015-05-14 | 2018-01-26 | 厦门宏发开关设备有限公司 | A kind of shunt trip of breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150930 Termination date: 20180514 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |