CN201975347U - Overcurrent protection circuit breaker for automatic power distribution system with voltage lower than 0.4KV - Google Patents
Overcurrent protection circuit breaker for automatic power distribution system with voltage lower than 0.4KV Download PDFInfo
- Publication number
- CN201975347U CN201975347U CN2010206929625U CN201020692962U CN201975347U CN 201975347 U CN201975347 U CN 201975347U CN 2010206929625 U CN2010206929625 U CN 2010206929625U CN 201020692962 U CN201020692962 U CN 201020692962U CN 201975347 U CN201975347 U CN 201975347U
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- phase
- current
- circuit breaker
- current transformer
- overcurrent protection
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- 230000002159 abnormal effect Effects 0.000 abstract 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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Abstract
The utility model provides an overcurrent protection circuit breaker for an automatic power distribution system with voltage lower than 0.4KV, which comprises a residual current circuit breaker. A 'V' phase in a current transformer loop of the residual current circuit breaker is provided with a current transformer, the current transformer induces current data from the 'V' phase in the current transformer loop and transmits the data to a CPU (central processing unit), and when current of the 'V' phase is abnormal or when the 'V' phase is in short circuit with an 'N' phase, the CPU gives a tripping instruction and transmits the tripping instruction to an electric switching on and switching off mechanism. The current transformer is arranged on the 'V' phase, so that various working conditions of the distribution system can be timely monitored, abnormal working conditions of the 'V' phase can be timely discovered, and a CPU control system gives out overcurrent protection instructions to protect a distribution circuit.
Description
Technical field
The utility model relates to low-voltage controling appliance, more particularly relates to the Over Current Circuit Breaker of the following electrical power distribution automatization system of a kind of 0.4KV.
Background technology
Usually; 0.4KV the residual current action breaker of following electrical power distribution automatization system is not provided with current transformer mutually at " V "; therefore; when " V " phase current in the distribution system unusual or with " N " when being short-circuited mutually; CPU can't acquisition cuicuit current anomaly data; be transferred to electronic on/off switch mechanism so can not send trip command, distribution system can not realize overcurrent protection this moment, can not satisfy in " rural area low-voltage power technical regulation " requirement about single-phase overcurrent protection fully.
Summary of the invention
The utility model provides a kind of 0.4KV the Over Current Circuit Breaker of following electrical power distribution automatization system for solving the deficiency that residual current action breaker exists in the use.
The utility model is achieved through the following technical solutions: the Over Current Circuit Breaker of the following electrical power distribution automatization system of a kind of 0.4KV; comprise residual current action breaker, " V " in the current transformer loop of described residual current action breaker is provided with current transformer mutually.
The utility model intelligent breaker compared with prior art, its beneficial effect is:
Owing to be provided with current transformer mutually at " V "; can in time monitor every operating mode of distribution system; in time find " V " phase work condition abnormality situation; and utilize system control cpu to send the overcurrent protection instruction; realization has been satisfied " rural area low-voltage power technical regulation " requirement about single-phase overcurrent protection to the protection of distribution line.
Description of drawings
Fig. 1 is a residual current action breaker structural representation in the prior art;
Fig. 2 is the structural representation of the utility model Over Current Circuit Breaker.
Among the figure: 1.CPU, 2. " N " phase, 3. " W " phase, 4. " V " phase, 5. " U " phase, 6. residual current action breaker moving contact, 7. current transformer loop, 8. current transformer, 9. electronic on/off switch mechanism.
Embodiment
Be further described below in conjunction with accompanying drawing and specific embodiment Over Current Circuit Breaker the following electrical power distribution automatization system of a kind of 0.4KV of the utility model:
In the accompanying drawing 1; in the current transformer loop 7 of residual current action breaker; general only 3 current transformer 8 is set on 5 mutually mutually with " U " at " W "; and on " V " phase 4 current transformer is not set; when being short-circuited between 2 mutually when current anomaly in " V " of Circuits System phase 4 or with " N "; CPU 1 can't obtain the current anomaly data; can not send trip command to electronic on/off switch mechanism 9; at this moment; residual current action breaker moving contact 6 can not automatic disconnection, thereby causes circuit can not realize overcurrent protection.
In the accompanying drawing 2; set up current transformer 8 on " V " phase 4 in the current transformer loop 7 of residual current action breaker; " V " of current transformer 8 from current transformer loop 7 be 4 induced current data mutually; and with transfer of data to CPU1; when " V " of Circuits System mutually 4 electric currents occur unusual or when being short-circuited between 2 mutually with " N "; the current anomaly data can in time be transferred to CPU 1; and send trip command to electronic on/off switch mechanism 9; at this moment; residual current action breaker moving contact 6 is with automatic disconnection, thus the overcurrent protection of realization circuit.
Claims (1)
1. the overcurrent protection circuit breaker of the following electrical power distribution automatization system of 0.4KV comprises the residual current acting circuit breaker, it is characterized in that: " V " in the current transformer loop of described residual current acting circuit breaker is provided with current transformer mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206929625U CN201975347U (en) | 2010-12-31 | 2010-12-31 | Overcurrent protection circuit breaker for automatic power distribution system with voltage lower than 0.4KV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206929625U CN201975347U (en) | 2010-12-31 | 2010-12-31 | Overcurrent protection circuit breaker for automatic power distribution system with voltage lower than 0.4KV |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201975347U true CN201975347U (en) | 2011-09-14 |
Family
ID=44580445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206929625U Expired - Lifetime CN201975347U (en) | 2010-12-31 | 2010-12-31 | Overcurrent protection circuit breaker for automatic power distribution system with voltage lower than 0.4KV |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201975347U (en) |
-
2010
- 2010-12-31 CN CN2010206929625U patent/CN201975347U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: WEINAN ADMINISTRATION OF POWER SUPPLY Effective date: 20140326 Owner name: WEINAN ADMINISTRATION OF POWER SUPPLY Effective date: 20140326 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 714000 WEINAN, SHAANXI PROVINCE TO: 100761 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140326 Address after: 100761 West Chang'an Avenue, Beijing, No. 86, No. Patentee after: State Grid Corporation of China Patentee after: Weinan Power Supply Bureau Address before: 714000 No. 110 Qianjin Road, Shaanxi, Weinan Patentee before: Weinan Power Supply Bureau |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110914 |