CN201590644U - Arc suppression coil knife-switch locking device - Google Patents
Arc suppression coil knife-switch locking device Download PDFInfo
- Publication number
- CN201590644U CN201590644U CN2009202842367U CN200920284236U CN201590644U CN 201590644 U CN201590644 U CN 201590644U CN 2009202842367 U CN2009202842367 U CN 2009202842367U CN 200920284236 U CN200920284236 U CN 200920284236U CN 201590644 U CN201590644 U CN 201590644U
- Authority
- CN
- China
- Prior art keywords
- arc suppression
- switch
- knife
- suppression coil
- locking device
- 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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Abstract
The utility model relates to a locking device of an arc suppression coil knife-switch, which belongs to the electrical field. Anti-error function of known arc suppression coils only prevents operational intervals, and is unable to judge whether or not a system status allows operation on the arc suppression coils, and the operation to an arc suppression coil knife-switch is on-load closing of the knife-switch if the system is grounded. The locking device is formed by a mechanical transmission mechanism, a locking mechanism and a control circuit, and is characterized in that locking contacts of a voltage relay are connected in series into the control circuit, and the voltage relay is mutually connected with a system bus voltage transformer. If the system encounters failures as grounding and the like, voltage exceeds the setting range of the relay, the contacts of the voltage relay are disconnected from an operation circuit of the arc suppression coil knife-switch, thereby realizing locking operation of the arc suppression coil knife-switch, and preventing on-loading closing of the knife-switch.
Description
Technical field
The utility model relates to a kind of locking device of arc suppression coil disconnecting link, belongs to electric field.
Technical background
At present, the anti-error function of known arc suppression coil is merely able to operation room anti-error every carrying out, and can't judge whether system mode allows arc suppression coil is operated, if there is ground connection in system, the arc suppression coil disconnecting link is operated, and that will be an on-load drawing disconnecting link, and consequence is hardly imaginable; Therefore, people wish that urgently the device that overcomes the problems referred to above can be arranged.
Summary of the invention
In order to prevent the purpose of on-load drawing disconnecting link, the utility model provides a kind of locking device of arc suppression coil disconnecting link.
To achieve these goals, the technical solution of the utility model is that a kind of arc suppression coil disconnecting link locking device is made of mechanical transmission mechanism, blocking mechanism and control circuit, it is characterized in that: serial connection voltage relay locking contact (3) in its control circuit, this voltage relay (1) connects with the system busbar voltage transformer.
The beneficial effects of the utility model are: if faults such as ground connection appear in system, voltage exceeds the relay setting scope, the voltage relay contact disconnects arc suppression coil switch operation loop, thereby the locking that realization is operated the arc suppression coil disconnecting link prevents on-load drawing disconnecting link.
Description of drawings
Fig. 1 is a circuit diagram of the present utility model.
In the accompanying drawing, 1 voltage relay, 2 bus overvoltage relays, 3 voltage relay locking contacts.
Embodiment
With reference to accompanying drawing 1 because only system do not have under ground connection, the normal situation of system voltage just can the drawing arc suppression coil disconnecting link.When the utility model uses, the voltage range of the voltage relay system's normal working voltage of adjusting, just can judge system voltage by being installed at the voltage relay that is connected with bus-bar potential transformer, if faults such as ground connection appear in system, voltage exceeds setting range, the voltage relay contact disconnects arc suppression coil switch operation control loop, thereby realizes the feasibility that the arc suppression coil disconnecting link is operated is controlled automatically.
Claims (1)
1. arc suppression coil disconnecting link locking device is made of mechanical transmission mechanism, blocking mechanism and control circuit, it is characterized in that: serial connection voltage relay locking contact (3) in its control circuit, this voltage relay (1) connects with the system busbar voltage transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202842367U CN201590644U (en) | 2009-12-03 | 2009-12-03 | Arc suppression coil knife-switch locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202842367U CN201590644U (en) | 2009-12-03 | 2009-12-03 | Arc suppression coil knife-switch locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201590644U true CN201590644U (en) | 2010-09-22 |
Family
ID=42750438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202842367U Expired - Fee Related CN201590644U (en) | 2009-12-03 | 2009-12-03 | Arc suppression coil knife-switch locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201590644U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101996798A (en) * | 2010-11-23 | 2011-03-30 | 江苏省电力公司滨海县供电公司 | Voltage transformer ground switch anti-misoperation device |
-
2009
- 2009-12-03 CN CN2009202842367U patent/CN201590644U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101996798A (en) * | 2010-11-23 | 2011-03-30 | 江苏省电力公司滨海县供电公司 | Voltage transformer ground switch anti-misoperation device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100922 Termination date: 20111203 |