CN205231717U - High voltage circuit breaker protection circuit - Google Patents
High voltage circuit breaker protection circuit Download PDFInfo
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- CN205231717U CN205231717U CN201520836609.2U CN201520836609U CN205231717U CN 205231717 U CN205231717 U CN 205231717U CN 201520836609 U CN201520836609 U CN 201520836609U CN 205231717 U CN205231717 U CN 205231717U
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Abstract
The utility model provides a high voltage circuit breaker protection circuit, the utility model discloses a looks current transformer, C looks current transformer, a looks electromagnetic type current relay, C looks electromagnetic type current relay, a overflow trip coil, C mutually and overflow trip coil and binding post mutually, a looks current transformer a looks electromagnetic type current relay and an overflows trip coil mutually and sets up in A looks circuit, C looks current transformer C looks electromagnetic type current relay and C overflows trip coil mutually and sets up in C looks circuit. The utility model has the advantages of the return circuit is simple, the reliability is high, the suitability is strong.
Description
Technical field
the utility model belongs to for power distribution circuit device field, particularly relates to a kind of primary cut-out protective circuit.
Background technology
along with the development of China's electric utility, electric power system improves constantly the intellectuality of killer switch, reliability requirement, and secondary control loop realizes the intelligentized core of switch just.Current domestic electric power system, above to the power transformation that generates electricity, down to distribution electricity consumption, all require that each circuit switching is equipped with intelligence reliably defencive function.Existing implementation is generally current transformer, straight ac panel/voltage transformer, comprehensive protector coordinate circuit breaker to realize defencive function; be in operation the stability comparing and rely on multiple components and parts, often because components and parts fault causes overstep tripping after supply line is short-circuited in small distribution engineering or rural power grids distribution engineering.
Utility model content
for the weak point of existing scheme, the utility model provides a kind of primary cut-out protecting circuit designed scheme.The purpose of this utility model is to provide the primary cut-out protective circuit that a kind of circuit structure is simple, reliability is strong, to solve the problem.
the technical solution of the utility model is to provide a kind of primary cut-out protective circuit, comprises A phase current mutual inductor, C phase current mutual inductor, A phase electromagnetic type current relay, C phase electromagnetic type current relay, A phase overcurrent tripping coil, C phase overcurrent tripping coil and binding post; Described A phase current mutual inductor, described A phase electromagnetic type current relay and described A phase overcurrent tripping coil are arranged in A phase circuit; Described C phase current mutual inductor, described C phase electromagnetic type current relay and described C phase overcurrent tripping coil are arranged in C phase circuit.
as preferably of the present utility model, described A phase electromagnetic type current relay comprises the first auxiliary contact, the second auxiliary contact and the 5th auxiliary contact.
as preferably of the present utility model, described A phase overcurrent tripping coil is connected with described first auxiliary contact, and described A phase overcurrent takes off mouth coil and described first auxiliary contact series connection is all arranged side by side with described second auxiliary contact.
as preferably of the present utility model, described C phase electromagnetic type current relay comprises the 3rd auxiliary contact, the 4th auxiliary contact and the 6th auxiliary contact.
as preferably of the present utility model, described C phase overcurrent tripping coil is connected with described 3rd auxiliary contact, and described C phase overcurrent takes off mouth coil and described 3rd auxiliary contact series connection is all arranged side by side with described 4th auxiliary contact.
as preferably of the present utility model, described binding post is arranged between described A phase current mutual inductor with described A phase electromagnetic type current relay, between described C phase current mutual inductor and described C phase electromagnetic type current relay respectively.
as preferably of the present utility model, described 5th auxiliary contact and described 6th auxiliary contact are all connected with described binding post.
the utility model has following beneficial effect:
the utility model has the advantages such as loop is simple, reliability is high, applicability is strong.
Accompanying drawing explanation
fig. 1 is structural representation of the present utility model;
in figure, 1-A phase current mutual inductor; 2-A phase electromagnetic type current relay; 3-C phase current mutual inductor; 4-C phase electromagnetic type current relay; 5-A phase overcurrent tripping coil; 6-C phase overcurrent tripping coil; 7-binding post; 201-first auxiliary contact; 202-second auxiliary contact; 203-the 5th auxiliary contact; 401-the 3rd auxiliary contact; 402-the 4th auxiliary contact; 403-the 6th auxiliary contact.
Embodiment
below in conjunction with accompanying drawing, the utility model is described in further detail.
as shown in Figure 1, the utility model embodiment comprises A phase current mutual inductor 1, C phase current mutual inductor 3, A phase electromagnetic type current relay 2, C phase electromagnetic type current relay 4, A phase overcurrent tripping coil 5, C phase overcurrent tripping coil 6 and binding post 7; A phase current mutual inductor 1, A phase electromagnetic type current relay 2 and A phase overcurrent tripping coil 5 are arranged in A phase circuit; C phase current mutual inductor 3, C phase electromagnetic type current relay 4 and C phase overcurrent tripping coil 6 are arranged in C phase circuit.
as shown in Figure 1, the utility model embodiment A phase electromagnetic type current relay 2 comprises the first auxiliary contact 201, second auxiliary contact 202 and the 5th auxiliary contact 203.A phase overcurrent tripping coil 5 is connected with the first auxiliary contact 201, and A phase overcurrent takes off mouth coil and the first auxiliary contact 201 are connected all arranged side by side with the second auxiliary contact 202.C phase electromagnetic type current relay 4 comprises the 3rd auxiliary contact 401, the 4th auxiliary contact 402 and the 6th auxiliary contact 403.C phase overcurrent tripping coil 6 is connected with the 3rd auxiliary contact 401, and C phase overcurrent takes off mouth coil and the 3rd auxiliary contact 401 are connected all arranged side by side with the 4th auxiliary contact 402.
as shown in Figure 1, the utility model embodiment binding post 7 is arranged between A phase current mutual inductor 1 with A phase electromagnetic type current relay 2, between C phase current mutual inductor 3 and C phase electromagnetic type current relay 4 respectively.5th auxiliary contact 203 and the 6th auxiliary contact 403 are all connected with binding post 7.
embodiment recited above is only be described preferred implementation of the present utility model, not limits design of the present utility model and scope.Under the prerequisite not departing from the utility model design concept; the various modification that this area ordinary person makes the technical solution of the utility model and improvement; protection range of the present utility model all should be dropped into; the technology contents of the utility model request protection, all records in detail in the claims.
Claims (1)
1. a primary cut-out protective circuit, is characterized in that: comprise A phase current mutual inductor (1), C phase current mutual inductor (3), A phase electromagnetic type current relay (2), C phase electromagnetic type current relay (4), A phase overcurrent tripping coil (5), C phase overcurrent tripping coil (6) and binding post (7); Described A phase current mutual inductor (1), described A phase electromagnetic type current relay (2) and described A phase overcurrent tripping coil (5) are arranged in A phase circuit; Described C phase current mutual inductor (3), described C phase electromagnetic type current relay (4) and described C phase overcurrent tripping coil (6) are arranged in C phase circuit; Described A phase electromagnetic type current relay (2) comprises the first auxiliary contact (201), the second auxiliary contact (202) and the 5th auxiliary contact (203); Described A phase overcurrent tripping coil (5) is connected with described first auxiliary contact (201), and described A phase overcurrent takes off mouth coil and described first auxiliary contact (201) series connection is all arranged side by side with described second auxiliary contact (202); Described C phase electromagnetic type current relay (4) comprises the 3rd auxiliary contact (401), the 4th auxiliary contact (402) and the 6th auxiliary contact (403); Described C phase overcurrent tripping coil (6) is connected with described 3rd auxiliary contact (401), and described C phase overcurrent takes off mouth coil and described 3rd auxiliary contact (401) series connection is all arranged side by side with described 4th auxiliary contact (402); Described binding post (7) is arranged between described A phase current mutual inductor (1) with described A phase electromagnetic type current relay (2), between described C phase current mutual inductor (3) and described C phase electromagnetic type current relay (4) respectively; Described 5th auxiliary contact (203) and described 6th auxiliary contact (403) are all connected with described binding post (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520836609.2U CN205231717U (en) | 2015-10-27 | 2015-10-27 | High voltage circuit breaker protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520836609.2U CN205231717U (en) | 2015-10-27 | 2015-10-27 | High voltage circuit breaker protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205231717U true CN205231717U (en) | 2016-05-11 |
Family
ID=55906762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520836609.2U Active CN205231717U (en) | 2015-10-27 | 2015-10-27 | High voltage circuit breaker protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205231717U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109787185A (en) * | 2019-01-30 | 2019-05-21 | 宁波东海自动控制设备有限公司 | A kind of self-powered microcomputer protecting device of belt current tripping |
-
2015
- 2015-10-27 CN CN201520836609.2U patent/CN205231717U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109787185A (en) * | 2019-01-30 | 2019-05-21 | 宁波东海自动控制设备有限公司 | A kind of self-powered microcomputer protecting device of belt current tripping |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 313000 Huzhou Road, Zhejiang, No. 988 Patentee after: Huzhou Tailun Electric Power Equipment Co. Address before: 313000 Huzhou economic and Technological Development Zone, Zhejiang, road, No. 988 Patentee before: Huzhou Talent Power Sales & Technology Service Co., Ltd. |