CN202872329U - Circuit breaker with overvoltage protection function - Google Patents
Circuit breaker with overvoltage protection function Download PDFInfo
- Publication number
- CN202872329U CN202872329U CN 201220596241 CN201220596241U CN202872329U CN 202872329 U CN202872329 U CN 202872329U CN 201220596241 CN201220596241 CN 201220596241 CN 201220596241 U CN201220596241 U CN 201220596241U CN 202872329 U CN202872329 U CN 202872329U
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- CN
- China
- Prior art keywords
- circuit breaker
- overvoltage
- overvoltage protector
- protector
- circuit
- 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 circuit breaker with an overvoltage protection function. The circuit breaker comprises a circuit breaker body, wherein the circuit breaker body consists of a wire inlet end, a wire outlet end, an electromagnetic tripper, an electronic component, a main switch, a test button, a test resistor, a zero sequence current transducer and an overvoltage protector; the overvoltage protector is connected in parallel to two connection ends formed in a manner that the test button is connected in series with the test resistor; when the overvoltage protector is normal, an open circuit state is obtained; when voltage is more than 260V, the overvoltage protector is in a short circuit state; at the moment, the circuit breaker works to trip, so that protection is realized; and the circuit breaker is used for preventing household appliances from being damaged by overvoltage. The circuit breaker has the advantages that by the overvoltage protector additionally arranged, creepage and overvoltage dual-protection is realized; and the circuit breaker is simple in structure and easy to implement.
Description
Technical field
The utility model relates to a kind of circuit breaker, especially a kind of circuit breaker with overvoltage protection.
Background technology
Civil power is people's household electricity; its stability directly affects people's living standard; thunder and lightning exists in China's most area; the line voltage moment increase or the misphase civil power 220V lighting voltage that are caused by thunder and lightning become 380V power voltage; the accident that causes the household electrical appliance overvoltage to burn occurs repeatedly; and common circuit breaker only possesses switching function and creepage protection function, and almost every household has all installed a plurality of circuit breakers with electronic box.
Summary of the invention
The utility model provides a kind of circuit breaker with overvoltage protection, avoids the civil power users' such as domestic consumer, unit AC electric equipment not damage because of power network overvoltage.
For solving the problems of the technologies described above; the technical solution adopted in the utility model is: a kind of circuit breaker with overvoltage protection; comprise circuit breaker 1; circuit breaker 1 is by the end of incoming cables; leading-out terminal; magnetictrip; electronic building brick; main switch; test button; test resistance; zero sequence current mutual inductor forms; it is characterized in that: also comprise overvoltage protector 2; overvoltage protector 2 is connected in parallel on two links after test button and the test resistance series connection; overvoltage protector 2 is in open-circuit condition when normal; when voltage surpasses 260V; overvoltage protector 2 is in short-circuit condition; this moment, circuit breaker 1 work was threaded off, and reached protective effect.
The utility model has the advantages that increases overvoltage protector in circuit breaker, realize the electric leakage overvoltage double protection, simple in structure, is easy to realize applied range.
Description of drawings
Fig. 1 is theory diagram of the present utility model;
Among the figure: 1 is circuit breaker; 2 is overvoltage protector.
Embodiment
As shown in Figure 1; a kind of circuit breaker with overvoltage protection; comprise circuit breaker 1; circuit breaker 1 is comprised of end of incoming cables, leading-out terminal, magnetictrip, electronic building brick, main switch, test button, test resistance, zero sequence current mutual inductor; also comprise overvoltage protector 2; overvoltage protector 2 is connected in parallel on two links after test button and the test resistance series connection; overvoltage protector 2 is in open-circuit condition when normal; when voltage surpasses 260V; overvoltage protector 2 is in short-circuit condition; this moment, circuit breaker 1 work was threaded off, and reached protective effect.
In the present embodiment, overvoltage protector 2 can adopt varistor, semiconductor discharge tube, the lightning protected pipe of 260V.
Claims (2)
1. circuit breaker with overvoltage protection; comprise circuit breaker (1); circuit breaker (1) is by the end of incoming cables; leading-out terminal; magnetictrip; electronic building brick; main switch; test button; test resistance; zero sequence current mutual inductor forms; it is characterized in that: also comprise overvoltage protector (2); overvoltage protector (2) is connected in parallel on two links after test button and the test resistance series connection; overvoltage protector (2) is in open-circuit condition when normal; when voltage surpasses 260V; overvoltage protector (2) is in short-circuit condition; circuit breaker this moment (1) work is threaded off, and reaches protective effect.
2. circuit breaker according to claim 1 is characterized in that: varistor or semiconductor discharge tube or the lightning protected pipe of described overvoltage protector (2) employing 260V.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 201220596241 CN202872329U (en) | 2012-11-13 | 2012-11-13 | Circuit breaker with overvoltage protection function |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 201220596241 CN202872329U (en) | 2012-11-13 | 2012-11-13 | Circuit breaker with overvoltage protection function |
Publications (1)
Publication Number | Publication Date |
---|---|
CN202872329U true CN202872329U (en) | 2013-04-10 |
Family
ID=48039018
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 201220596241 Expired - Fee Related CN202872329U (en) | 2012-11-13 | 2012-11-13 | Circuit breaker with overvoltage protection function |
Country Status (1)
Country | Link |
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CN (1) | CN202872329U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103997017A (en) * | 2014-04-28 | 2014-08-20 | 国家电网公司 | Low-voltage leakage protector with overvoltage protection function |
CN104426122A (en) * | 2013-08-19 | 2015-03-18 | 海洋王(东莞)照明科技有限公司 | Power grid overvoltage protection circuit |
-
2012
- 2012-11-13 CN CN 201220596241 patent/CN202872329U/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104426122A (en) * | 2013-08-19 | 2015-03-18 | 海洋王(东莞)照明科技有限公司 | Power grid overvoltage protection circuit |
CN104426122B (en) * | 2013-08-19 | 2018-02-02 | 海洋王(东莞)照明科技有限公司 | Power network overvoltage crowbar |
CN103997017A (en) * | 2014-04-28 | 2014-08-20 | 国家电网公司 | Low-voltage leakage protector with overvoltage protection function |
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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: 20130410 Termination date: 20131113 |