CN202721438U - Circuit breaker coil protector - Google Patents
Circuit breaker coil protector Download PDFInfo
- Publication number
- CN202721438U CN202721438U CN 201220384832 CN201220384832U CN202721438U CN 202721438 U CN202721438 U CN 202721438U CN 201220384832 CN201220384832 CN 201220384832 CN 201220384832 U CN201220384832 U CN 201220384832U CN 202721438 U CN202721438 U CN 202721438U
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- CN
- China
- Prior art keywords
- circuit
- electrically connected
- coil
- relay
- breaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The utility model discloses a circuit breaker coil protector. The protector comprises an insulating shell and a circuit in the insulating shell. The insulating shell is provided with an input terminal and an output terminal. The input terminal and the output terminal are electrically connected with the circuit. The circuit comprises a power supply module and a time-delay circuit which is electrically connected with a voltage reduction output terminal of the power supply module. The output terminal of the time-delay circuit is electrically connected with a driving circuit. The output terminal of the driving circuit is electrically connected with a coil of a signal relay and the coil of an arc-extinguishing relay respectively. The circuit also comprises an operation monitoring relay which is electrically connected with the voltage reduction output terminal of the power supply module. The operation monitoring relay is electrically connected with an operation indication lamp installed on a shell. A contact of the signal relay and the contact of the arc-extinguishing relay are electrically connected with the output terminal. By using the circuit breaker coil protector of the utility model, burnout of a breaking coil and a closing coil of the circuit breaker can be prevented.
Description
Technical field
The utility model relates to technical field of relay protection, specifically, relates to a kind of breaker coil protector.
Background technology
At present; AC high voltage vacuum breaker is as control and protection equipment main in the electric power system; reliability is high, cut-off the series of advantages such as capacity is large, the time between overhauls(TBO) is long, all obtained using more and more widely in every field such as power industry, industrial and mining enterprises, railway transportations.But, when the vacuum circuit breaker operation mechanism is refused minute, refused to close, and in the situation of the auxiliary switch dynamic circuit connector of vacuum circuit-breaker, dynamic circuit breaker mismate, large electric current long duration of action is on the breaking coil or closing coil of vacuum circuit-breaker, easily burn breaking coil or the closing coil of vacuum circuit-breaker, affect safe and reliable power supply.
The utility model content
Technical problem to be solved in the utility model is: provide a kind of and can prevent the breaking coil of circuit breaker and the breaker coil protector of Burnout of Closing Coil.
For solving the problems of the technologies described above; the technical solution of the utility model is: breaker coil protector; comprise the circuit in insulation crust and the described insulation crust; described insulation crust is provided with lead-in clamp and output wiring terminal; described lead-in clamp and described output wiring terminal are electrically connected with described circuit; described circuit comprises power module; and the delay circuit that is electrically connected with the reduced output voltage end of described power module; the output of described delay circuit is electrically connected to drive circuit; the output of described drive circuit is electrically connected to respectively the coil of signal relay and the coil of arc extinguishing relay; described circuit also comprises the operation monitoring relay that is electrically connected with the reduced output voltage end of described power module; described operation monitoring relay is electrically connected to the run indicator that is installed on the described shell, and the contact of described signal relay and the contact of described arc extinguishing relay are electrically connected with described output wiring terminal.
After having adopted technique scheme; the beneficial effects of the utility model are: because the breaker coil protector of this utility model; comprise power module; and the delay circuit that is electrically connected with the reduced output voltage end of described power module; the output of described delay circuit is electrically connected to described drive circuit; the output of described drive circuit is electrically connected to the coil of described signal relay and the coil of described arc extinguishing relay; described circuit also comprises the operation monitoring relay that is electrically connected with the reduced output voltage end of power module; described operation monitoring relay is electrically connected to the run indicator that is installed on the shell, and the contact of described signal relay and the contact of described arc extinguishing relay are electrically connected with described output wiring terminal.When this breaker coil protector uses, positive supply consists of the loop through auxiliary switch, breaker coil protector and breaker closing coil and the negative supply of circuit breaker, start this breaker protector, inner delay circuit is started working, after delay time arrived, the arc extinguishing relay action that the control of delay circuit output signal is inner disconnected the normally closed contact of arc extinguishing relay, thereby the direct current on the breaking circuit breaker coil, the protection coil is not burnt; In addition, the contact of signal relay can be sent to output wiring terminal with operating state signals of telecommunication such as the startup of breaker coil protector operation, action maintenances, and then output wiring terminal can show and monitors by connecing signal lamp or supervisory control system; When break down in the internal electric source loop, it is undesired that run indicator can show, reports to the police, and whether the operation that people can observe this breaker coil protector very easily is normal.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the circuit diagram that the utility model is used for the protective circuit of breaker coil;
Fig. 2 is the theory diagram of breaker coil protector of the present utility model;
Among the figure: 1, lead-in clamp; 2, output wiring terminal; 3, power module; 4, delay circuit; 5, drive circuit; 6, signal relay; 7, arc extinguishing relay; 8, operation monitoring relay; 9, run indicator; 10, the auxiliary switch of circuit breaker; 11, the closing coil of circuit breaker; 12, breaker coil protector.
Embodiment
Fig. 2 is the functional-block diagram of breaker coil protector of the present utility model; with reference to Fig. 2; breaker coil protector of the present utility model; comprise the circuit in insulation crust (not shown) and the insulation crust; insulation crust is provided with lead-in clamp 1 and output wiring terminal 2; lead-in clamp 1 and output wiring terminal 2 are electrically connected with circuit; circuit comprises power module 3; and the delay circuit 4 that is electrically connected with the reduced output voltage end of power module 3; the output of delay circuit 4 is electrically connected to drive circuit 5; the output of drive circuit 5 is electrically connected to the coil of signal relay 6 and the coil of arc extinguishing relay 7; circuit also comprises the operation monitoring relay 8 that is electrically connected with the reduced output voltage end of power module 3; operation monitoring relay 8 is electrically connected to the run indicator 9 that is installed on the shell, and the contact of the contact of signal relay 6 and arc extinguishing relay 7 is electrically connected with output wiring terminal 2.
Fig. 1 is the circuit diagram that the utility model is used for the protective circuit of breaker coil.As shown in Figure 1, positive supply consists of the loop through auxiliary switch 10, breaker coil protector 12 and the breaker closing coil 11 of circuit breaker with negative supply, start this breaker coil protector 12, inner delay circuit 4 is started working, after delay time arrived, arc extinguishing relay 7 actions that the control of delay circuit 4 output signals is inner disconnected the normally closed contact of arc extinguishing relay 7, thereby the direct current on the breaking circuit breaker coil, the protection coil is not burnt; In addition, the contact of signal relay 6 can be sent to output wiring terminal 2 with operating state signals of telecommunication such as the startup of breaker coil protector 12 operation, action maintenances, and then output wiring terminal 2 can show and monitors by connecing signal lamp or supervisory control system; When break down in the internal electric source loop, it is undesired that run indicator 9 can show, reports to the police, and whether the operation that people can observe this breaker coil protector 12 very easily is normal.
Breaker coil protector of the present utility model; can close a floodgate at vacuum circuit-breaker, tripping mechanism breaks down; cause large electric current long duration of action when breaker closing coil 11 or circuit breaker trip coil; the large electric current of force disconnect, protective circuit breaker closing coil 11 or circuit breaker trip coil are not burnt.
The above only is giving an example of the utility model preferred forms.Should be pointed out that for the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model spirit and principle, can also make some distortion and improvement.Protection range of the present utility model is as the criterion with the content of claim, and any equivalent transformation that carries out based on technology enlightenment of the present utility model is also within protection range of the present utility model.
Claims (1)
1. breaker coil protector; comprise the circuit in insulation crust and the described insulation crust; described insulation crust is provided with lead-in clamp and output wiring terminal; described lead-in clamp and described output wiring terminal are electrically connected with described circuit; it is characterized in that: described circuit comprises power module; and the delay circuit that is electrically connected with the reduced output voltage end of described power module; the output of described delay circuit is electrically connected to drive circuit; the output of described drive circuit is electrically connected to respectively the coil of signal relay and the coil of arc extinguishing relay; described circuit also comprises the operation monitoring relay that is electrically connected with the reduced output voltage end of described power module; described operation monitoring relay is electrically connected to the run indicator that is installed on the described shell, and the contact of described signal relay and the contact of described arc extinguishing relay are electrically connected with described output wiring terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220384832 CN202721438U (en) | 2012-08-04 | 2012-08-04 | Circuit breaker coil protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220384832 CN202721438U (en) | 2012-08-04 | 2012-08-04 | Circuit breaker coil protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202721438U true CN202721438U (en) | 2013-02-06 |
Family
ID=47623242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220384832 Expired - Fee Related CN202721438U (en) | 2012-08-04 | 2012-08-04 | Circuit breaker coil protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202721438U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414167A (en) * | 2013-06-03 | 2013-11-27 | 国家电网公司 | State detection and protection method for circuit breaker opening and closing coil |
| CN106531569A (en) * | 2016-11-16 | 2017-03-22 | 国网上海市电力公司 | Anti-burning device for opening-closing coil |
| CN109545633A (en) * | 2018-11-16 | 2019-03-29 | 深圳供电局有限公司 | Permanent magnet circuit breaker |
-
2012
- 2012-08-04 CN CN 201220384832 patent/CN202721438U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103414167A (en) * | 2013-06-03 | 2013-11-27 | 国家电网公司 | State detection and protection method for circuit breaker opening and closing coil |
| CN103414167B (en) * | 2013-06-03 | 2016-06-22 | 国家电网公司 | The detection of circuit-breaker switching on-off coil state and guard method |
| CN106531569A (en) * | 2016-11-16 | 2017-03-22 | 国网上海市电力公司 | Anti-burning device for opening-closing coil |
| CN109545633A (en) * | 2018-11-16 | 2019-03-29 | 深圳供电局有限公司 | Permanent magnet circuit 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: 20130206 Termination date: 20160804 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |