CN202372620U - Detection circuit of circuit breaker - Google Patents

Detection circuit of circuit breaker Download PDF

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Publication number
CN202372620U
CN202372620U CN2011205299134U CN201120529913U CN202372620U CN 202372620 U CN202372620 U CN 202372620U CN 2011205299134 U CN2011205299134 U CN 2011205299134U CN 201120529913 U CN201120529913 U CN 201120529913U CN 202372620 U CN202372620 U CN 202372620U
Authority
CN
China
Prior art keywords
circuit
photoelectrical coupler
resistance
fault
circuit breaker
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
Application number
CN2011205299134U
Other languages
Chinese (zh)
Inventor
梁宇
何峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong East Power Co Ltd
Original Assignee
Guangdong East Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangdong East Power Co Ltd filed Critical Guangdong East Power Co Ltd
Priority to CN2011205299134U priority Critical patent/CN202372620U/en
Application granted granted Critical
Publication of CN202372620U publication Critical patent/CN202372620U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a detection circuit of a circuit breaker, which includes the circuit breaker, a photoelectric coupler and a fault location circuit unit, wherein both ends of the circuit breaker are connected with an external circuit, a positive pole of the photoelectric coupler is electrically connected with one end of the circuit breaker, a negative pole of the photoelectric coupler is electrically connected with the other end of the circuit breaker, a collecting electrode of the photoelectric coupler is connected with a direct current, and an emitting electrode of the photoelectric coupler is electrically connected with an input end of the fault location circuit unit. The detection circuit of the circuit breaker is matched with the photoelectric coupler and the fault location circuit unit through the circuit breaker, drives the photoelectric coupler by utilizing the voltage difference formed at both ends of the disconnecting circuit breaker, and further enables the fault location circuit unit to operate so as to determine the position of the circuit fault; moreover, the detection circuit has simple structure and low cost, and can locate the position of circuit fault quickly.

Description

The isolating switch circuit for detecting
Technical field
The utility model relates to the power circuit technical field, especially relates to a kind of isolating switch circuit for detecting.
Background technology
In distribution system, electric power is assigned to various loads, and generally is divided into branch road, the electric of these road direction appointments.Branch road also can be connected on various other controller switching equipments, as reducing supply voltage so that on the transformer by a certain electric devices use.
Because to unusual power state in system, i.e. the worry of fault, prior art provides a kind of circuit protection device, for example protects the isolating switch of various loads.Isolating switch can prevent harm or make it minimum, and general isolating switch automatically works.Isolating switch also can position processing to faulty circuit under failure condition, more convenient and quicker find the fault nidus.
Summary of the invention
The utility model be to the defective that above-mentioned background technology exists provide a kind of simple in structure, cost is low, the isolating switch circuit for detecting of fault location nidus fast.
For realizing above-mentioned purpose; The utility model discloses a kind of isolating switch circuit for detecting; It comprises isolating switch, photoelectrical coupler and localization of fault circuit unit; Said isolating switch two ends connect external circuit, and the anode of said photoelectrical coupler and said circuit breaker one end electrically connect, and the negative electrode of said photoelectrical coupler and the said circuit breaker other end electrically connect; The collector of said photoelectrical coupler is connected with direct current, and the input end of the emitter of said photoelectrical coupler and said localization of fault circuit unit electrically connects.
Further; Said localization of fault circuit unit comprises the 3rd resistance, the 4th resistance and light emitting diode; The input end of the corresponding said localization of fault circuit unit of said the 3rd resistance one end and the 4th resistance one end; The negative electrode of said the 3rd resistance other end and said light emitting diode electrically connects, and the anode of said the 4th resistance other end and said light emitting diode electrically connects, the plus earth of said light emitting diode.
Further, also comprise first resistance and second resistance, the anode of said photoelectrical coupler electrically connects through said first resistance and said circuit breaker one end, and the negative electrode of said photoelectrical coupler electrically connects through said second resistance and the said circuit breaker other end.
Further, also comprise first diode, said first diode anode electrically connects the negative electrode of said photoelectrical coupler, and said first diode cathode electrically connects the anode of said photoelectrical coupler.
Further; Also comprise the fault alarm unit; Be provided with second diode between the emitter of said photoelectrical coupler and the said fault alarm unit input end; The anode of said second diode and the emitter of said photoelectrical coupler electrically connect, and the negative electrode of said second diode and said fault alarm unit input end electrically connect.
In sum; The utility model isolating switch circuit for detecting cooperates photoelectrical coupler, localization of fault circuit unit and fault alarm unit through said isolating switch; The voltage difference that two ends form when utilizing said isolating switch to break off drives photoelectrical coupler; And then make the lumination of light emitting diode in the localization of fault circuit unit confirm the fault nidus, simple in structure, cost is low and quick positioning circuit fault nidus.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
For further understanding characteristic, technological means and the specific purposes that reached, the function of the utility model, the utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
As shown in Figure 1; The utility model isolating switch circuit for detecting comprises isolating switch K, first resistance R 1, second resistance R 2, the first diode D1, photoelectrical coupler U, localization of fault circuit unit 10 and fault alarm unit 20; Said isolating switch K two ends connect external circuit; The anode of said photoelectrical coupler U electrically connects with said circuit breaker K one end through said first resistance R 1; The negative electrode of said photoelectrical coupler U electrically connects with the said circuit breaker K other end through said second resistance R 2, through regulating the value of first resistance R 1 and second resistance R 2, to realize being applied in the fault detecting of different electric pressures; The collector of said photoelectrical coupler U is connected with direct current VCC; The input end of the emitter of said photoelectrical coupler U and said localization of fault circuit unit 10 and fault alarm unit 20 input ends electrically connect; The said first diode D1 anode electrically connects the negative electrode of said photoelectrical coupler U; The said first diode D1 negative electrode electrically connects the anode of said photoelectrical coupler U, when reverse voltage is too high, causes damage to prevent said photoelectrical coupler U.
Be provided with the second diode D2 between the emitter of said photoelectrical coupler U and said fault alarm unit 20 input ends; The emitter of the anode of the said second diode D2 and said photoelectrical coupler U electrically connects, and the negative electrode of the said second diode D2 and said fault alarm unit 20 input ends electrically connect.
Said localization of fault circuit unit 10 comprises the 3rd resistance R 3, the 4th resistance R 4 and light emitting diode D3; The input end of the corresponding said localization of fault circuit unit 10 of said the 3rd resistance R 3 one ends and the 4th resistance R 4 one ends; The negative electrode of said the 3rd resistance R 3 other ends and said light emitting diode D3 electrically connects; The anode of said the 4th resistance R 4 other ends and said light emitting diode D3 electrically connects, the plus earth of said light emitting diode D3.
The utility model is when externally circuit breaks down; Said isolating switch K breaks off; The voltage difference that said isolating switch K two ends form drives said photoelectrical coupler U work, and the emitter transmission signals of said photoelectrical coupler U is given the input end and fault alarm unit 20 input ends of said localization of fault circuit unit 10, and said fault alarm unit 20 gives the alarm at this moment; Light emitting diode D3 in the said localization of fault circuit unit 10 receives the signal that said photoelectrical coupler U sends; Said light emitting diode D3 two ends form voltage drop and then luminous, thereby judge the position of said isolating switch K, confirm the fault nidus.The utility model also can a plurality ofly place external circuit diverse location place respectively, electrically connects together to use, with the purpose that realizes that fault detects simultaneously.
In sum; The utility model isolating switch circuit for detecting cooperates photoelectrical coupler U, localization of fault circuit unit 10 and fault alarm unit 20 through said isolating switch K; The voltage difference that two ends form when utilizing said isolating switch K to break off drives photoelectrical coupler U; And then make that light emitting diode D3 in the localization of fault circuit unit 10 is luminous to confirm the fault nidus, simple in structure, cost is low and positioning circuit fault nidus fast.
The above embodiment has only expressed a kind of embodiment of the utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model scope.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with accompanying claims.

Claims (5)

1. isolating switch circuit for detecting; Comprise isolating switch (K); Said isolating switch (K) two ends connect external circuit; It is characterized in that: also comprise photoelectrical coupler (U) and localization of fault circuit unit (10), the anode of said photoelectrical coupler (U) and said circuit breaker (K) end electrically connect, and the negative electrode of said photoelectrical coupler (U) and said circuit breaker (K) other end electrically connect; The collector of said photoelectrical coupler (U) is connected with direct current (VCC), and the input end of the emitter of said photoelectrical coupler (U) and said localization of fault circuit unit (10) electrically connects.
2. isolating switch circuit for detecting according to claim 1; It is characterized in that: said localization of fault circuit unit (10) comprises the 3rd resistance (R3), the 4th resistance (R4) and light emitting diode (D3); The input end of the corresponding said localization of fault circuit unit of said the 3rd resistance (R3) end and the 4th resistance (R4) end (10); The negative electrode of said the 3rd resistance (R3) other end and said light emitting diode (D3) electrically connects; The anode of said the 4th resistance (R4) other end and said light emitting diode (D3) electrically connects, the plus earth of said light emitting diode (D3).
3. isolating switch circuit for detecting according to claim 1; It is characterized in that: also comprise first resistance (R1) and second resistance (R2); The anode of said photoelectrical coupler (U) electrically connects through said first resistance (R1) and said circuit breaker (K) end, and the negative electrode of said photoelectrical coupler (U) electrically connects through said second resistance (R2) and said circuit breaker (K) other end.
4. isolating switch circuit for detecting according to claim 1; It is characterized in that: also comprise first diode (D1); Said first diode (D1) anode electrically connects the negative electrode of said photoelectrical coupler (U), and said first diode (D1) negative electrode electrically connects the anode of said photoelectrical coupler (U).
5. isolating switch circuit for detecting according to claim 1; It is characterized in that: also comprise fault alarm unit (20); Be provided with second diode (D2) between the emitter of said photoelectrical coupler (U) and said fault alarm unit (20) input end; The emitter of the anode of said second diode (D2) and said photoelectrical coupler (U) electrically connects, and the negative electrode of said second diode (D2) and said fault alarm unit (20) input end electrically connect.
CN2011205299134U 2011-12-19 2011-12-19 Detection circuit of circuit breaker Expired - Fee Related CN202372620U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011205299134U CN202372620U (en) 2011-12-19 2011-12-19 Detection circuit of circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011205299134U CN202372620U (en) 2011-12-19 2011-12-19 Detection circuit of circuit breaker

Publications (1)

Publication Number Publication Date
CN202372620U true CN202372620U (en) 2012-08-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011205299134U Expired - Fee Related CN202372620U (en) 2011-12-19 2011-12-19 Detection circuit of circuit breaker

Country Status (1)

Country Link
CN (1) CN202372620U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103971987A (en) * 2013-01-31 2014-08-06 中国科学院理化技术研究所 Liquid metal circuit switch device
CN106093688A (en) * 2016-08-05 2016-11-09 国家电网公司 A kind of Substation secondary circuit fault automatic detection alarm device
CN107703447A (en) * 2017-10-23 2018-02-16 风度(常州)汽车研发院有限公司 Condition checkout gear and dynamical system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103971987A (en) * 2013-01-31 2014-08-06 中国科学院理化技术研究所 Liquid metal circuit switch device
CN106093688A (en) * 2016-08-05 2016-11-09 国家电网公司 A kind of Substation secondary circuit fault automatic detection alarm device
CN107703447A (en) * 2017-10-23 2018-02-16 风度(常州)汽车研发院有限公司 Condition checkout gear and dynamical system

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120808

Termination date: 20161219

CF01 Termination of patent right due to non-payment of annual fee