CN205657416U - Power spool with overvoltage protection function - Google Patents
Power spool with overvoltage protection function Download PDFInfo
- Publication number
- CN205657416U CN205657416U CN201620481782.XU CN201620481782U CN205657416U CN 205657416 U CN205657416 U CN 205657416U CN 201620481782 U CN201620481782 U CN 201620481782U CN 205657416 U CN205657416 U CN 205657416U
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- CN
- China
- Prior art keywords
- voltage relay
- power spool
- protection function
- power supply
- spool body
- 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.)
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- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 210000000056 organ Anatomy 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- Transformers For Measuring Instruments (AREA)
Abstract
The utility model relates to a transformer substation uses in the low -voltage distribution field power cord axle, specifically is a power spool with overvoltage protection function, has solved present power spool and has had easy mistake reeve and burn out the problem that testing instrument influences the alternating -current system of standing entirely. Power spool with overvoltage protection function is including power spool body, voltage relay, voltage relay's coil both ends and power spool body are connected, and voltage relay's normally closed contact concatenates on power spool body, and voltage relay's normally open contact concatenates with bee calling organ, battery and forms closed -loop. The utility model discloses having ensured testing equipment's safe operation, having avoided the overvoltage to burn out testing equipment's problem, the transformer substation's alternating -current system that has stabilized has in addition ensured testing personnel's safety, has the advantage of simple structure, convenient to use and strong operability.
Description
Technical field
This utility model relates to transformer station's low-voltage distribution field power supply bobbin, a kind of power supply bobbin with over-voltage protection function.
Background technology
When protecting electrical power system personnel utilize test apparatus to verify protection device, need test apparatus is switched on power, typically utilize power supply bobbin to be directly accessed station interpolation block.Whether the drawback of do so is: for being that 220V alternating current power supply is uncertain in socket, cause access 380V alternating current power supply in socket once owing to constructing in station, can burn out test apparatus, and then affect AC system of entirely standing.
Summary of the invention
The problem that this utility model easily mispluged and then burnt out the full AC system of standing of test apparatus impact to solve existing power supply bobbin to exist, it is provided that a kind of power supply bobbin with over-voltage protection function.
This utility model adopts the following technical scheme that realization: have the power supply bobbin of over-voltage protection function, including power supply spool body, voltage relay；The coil two ends of voltage relay are connected with power supply spool body, and the normally-closed contact of voltage relay is serially connected with in power supply spool body, and the normally opened contact of voltage relay concatenates formation closed-loop path with buzzer, battery.
During operation, once socket will access 380V alternating current power supply by mistake, high-tension circuit drives the normally opened contact Guan Bi of high-voltage relay, buzzer is connected, sending alarm, simultaneously, the normally-closed contact of high-voltage relay disconnects, deenergization bobbin, overcomes existing power supply bobbin and there is the problem easily mispluging and then burning out the full AC system of standing of test apparatus impact.
This utility model has ensured the safety operation of testing equipment, it is to avoid overvoltage burns out the problem of testing equipment, and has consolidated transformer station's AC system, has ensured the safety of testing crew, has simple in construction, the easy to use and advantage of strong operability.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1-power supply spool body, 2-buzzer.
Detailed description of the invention
There is the power supply bobbin of over-voltage protection function, including power supply spool body 1, voltage relay；The coil two ends of voltage relay are connected with power supply spool body 1, and the normally-closed contact of voltage relay is serially connected with in power supply spool body 1, and the normally opened contact of voltage relay concatenates formation closed-loop path with buzzer 2, battery.
Claims (1)
1. a power supply bobbin with over-voltage protection function, it is characterised in that: include power supply spool body (1), voltage relay；The coil two ends of voltage relay are connected with power supply spool body (1), and the normally-closed contact of voltage relay is serially connected with in power supply spool body (1), and the normally opened contact of voltage relay concatenates formation closed-loop path with buzzer (2), battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620481782.XU CN205657416U (en) | 2016-05-25 | 2016-05-25 | Power spool with overvoltage protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620481782.XU CN205657416U (en) | 2016-05-25 | 2016-05-25 | Power spool with overvoltage protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205657416U true CN205657416U (en) | 2016-10-19 |
Family
ID=57404327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620481782.XU Active CN205657416U (en) | 2016-05-25 | 2016-05-25 | Power spool with overvoltage protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205657416U (en) |
-
2016
- 2016-05-25 CN CN201620481782.XU patent/CN205657416U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |