CN201331563Y - DC600V online insulating detection device - Google Patents

DC600V online insulating detection device Download PDF

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Publication number
CN201331563Y
CN201331563Y CN 200820183385 CN200820183385U CN201331563Y CN 201331563 Y CN201331563 Y CN 201331563Y CN 200820183385 CN200820183385 CN 200820183385 CN 200820183385 U CN200820183385 U CN 200820183385U CN 201331563 Y CN201331563 Y CN 201331563Y
Authority
CN
China
Prior art keywords
dc600v
control
power supply
electric leakage
detection
Prior art date
Application number
CN 200820183385
Other languages
Chinese (zh)
Inventor
李国平
Original Assignee
青岛四方车辆研究所有限公司
青岛四研铁路电气研究开发有限公司
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 青岛四方车辆研究所有限公司, 青岛四研铁路电气研究开发有限公司 filed Critical 青岛四方车辆研究所有限公司
Priority to CN 200820183385 priority Critical patent/CN201331563Y/en
Application granted granted Critical
Publication of CN201331563Y publication Critical patent/CN201331563Y/en

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Abstract

The utility model relates to a DC600V online insulating detection device, which comprises an insulating control device, an electric leakage detection device, an electric leakage alarm device and a DC110V power source, wherein the DC110V power source is connected with the insulating control device to supply power to the insulating control device, the electric leakage detection device is disposed in a power supply loop of positive and negative wires of a DC600V power distribution cabinet and connected with the insulating control device to provide leakage current signals to the insulating control device, the insulating control device is provided with an internal relay, normal close contact points of the internal relay are connected with power supply control contactors KM1 and KM2, normal open contact points of the internal relay are connected with the electric leakage alarm device, and dynamic contact points of the internal relay are connected with the DC110V power source. When the leakage current exceeds a preset current value, relay contact points of the insulating control device act and control the leakage alarm device to alarm, the power supply control contactors act and disconnect the power supply loop, thereby the utility model is not only simple in structure but also high in accuracy. In addition, a detection circuit is further arranged in the utility model to detect whether the device can normally operate, which guarantees safety of the device.

Description

The online insulation detection device of DC600V

Technical field

The utility model relates to a kind of leak current detection device, particularly a kind of pick-up unit that is applicable to railway DC600V power supply passenger vehicle power distribution cabinet power supply buses insulation leakagel volume leakage stream.

Background technology

Along with development of science and technology, the modern railways passenger vehicle mostly adopts the DC600V electric power system, adopt the DC600V electric power system to have many good qualities, it can realize the electric control system and the network monitoring system of robotization control easily, promote the technical merit of China's passenger vehicle electrical system and vehicle mounting, for new operation service on buses or trains system provides strong technical support, produce good economic benefit and social benefit, also laid firm foundations simultaneously, thereby the Electrical Safety problem of DC600V electric power system is particularly important with regard to what show for realization digitizing, networked transportation by railroad.

The utility model content

It is a kind of simple in structure that the purpose of this utility model is to provide, the online insulation detection control apparatus of the DC600V power supply buses leakage current that degree of accuracy is high.

The technical solution of the utility model is: the online insulation detection device of a kind of DC600V, and the online insulation detection device of described DC600V is provided with the insulation control device, earth detector, electric leakage alarm device, DC110V power supply; Wherein, the DC110V power supply is connected with the insulation control device, be its power supply, earth detector is arranged in the current supply circuit of the positive negative wire of DC600V power distribution cabinet, links to each other with the insulation control device, for it provides the leakage current signal, the insulation control device is provided with internal relay, its normally closed electric shock is connected with power supply control contactor KM1, KM2, and normally opened contact is connected with electric leakage alarm device, and moving contact and DC110V power supply join.

Preferably: described electric leakage alarm device is the electric leakage pilot lamp.

Preferably: the online insulation detection device of described DC600V also is provided with test circuit, and described test circuit comprises the DC110V power supply that is serially connected in the loop, testing button SB1, earth detector and test resistance R1.

Preferably: described earth detector is a current sensor.

The beneficial effects of the utility model are: the utility model is provided with earth detector, insulation control device and electric leakage alarm device, when leakage current surpasses the predetermined current value, the action of insulation control device relay contacts, the control electric leakage alarm device is reported to the police, the action of power supply control contactor, disconnect current supply circuit, not only simple in structure, and the degree of accuracy height.The utility model also is provided with test circuit in addition, and whether can operate as normal, ensured device security if being used to test this device.

Description of drawings

Fig. 1 is a principle of work block diagram of the present utility model

Fig. 2 is the schematic diagram of the utility model monitoring major loop and test circuit

Embodiment

Below in conjunction with description of drawings embodiment of the present utility model:

The online insulation detection device of a kind of DC600V, the online insulation detection device of described DC600V is provided with the insulation control device, earth detector current sensor, electric leakage alarm device leakage-current alarm lamp, DC110V power supply; Wherein, the DC110V power supply is connected with the insulation control device, be its power supply, current sensor is arranged in the current supply circuit of the positive negative wire of DC600V power distribution cabinet, links to each other with the insulation control device, for it provides the leakage current signal, the insulation control device comprises the peripheral circuit and the internal relay of primary controller, primary controller, the normally closed electric shock of internal relay is connected with power supply control contactor KM1, KM2, and normally opened contact is connected with electric leakage alarm device, and moving contact and DC110V power supply join.The online insulation detection device of DC600V also comprises test circuit, described test circuit comprises the DC110V power supply that is serially connected in the loop, testing button SB1, current sensor and test resistance R1, test resistance the R1 size of measuring current as required match.

During work, current sensor is monitored the size of DC600V power supply buses insulation leakagel volume leakage stream constantly, if leakage current is during less than setting value, then on-line insulation monitoring device duty remains unchanged, the contact of internal relay is positioned at the normally closed contact place, thereby DC600V electric power system operate as normal; If the leakage current that monitors of current sensor is during more than or equal to setting value, the primary controller received signal of insulation control device also issues a signal to the inductive coil of internal relay, thereby internal relay moves, the contact is allocated to normally opened contact place and self-locking by normally closed contact, and at this moment, power supply control contactor KM1, KM2 disconnect, the DC600V electric power system quits work, and the electric leakage pilot lamp is bright, produces alerting signal, thereby safeguards.

In order to check the online insulation detection device of DC600V, guarantee that it can operate as normal, support equipment safety is answered this device of use test circuit routine test.Method of testing: disconnect the DC600V power supply, the leakage current alarming value is set at 150mA (or other setting values), match suitable test resistance R1, given DC110V power supply is pressed testing button SB1 again, and the electric leakage pilot lamp is bright, relay adhesive and self-locking.Release button SB1 re-powers pick-up unit, can prepare to test next time.

Test will be calculated according to the number of wire turns of passing sensor with power and the resistance of resistance R1.Select for use the power of resistance will leave surplus, prevent that resistance from burning out, and has an accident.For example: if select 0.75mm for use 2Lead, selecting R1 is 1W, 8K Ω, number of wire turns is 12 circles.The electric current that calculates after test circuit is connected is 12 circle * 110V ÷ 8K Ω ≈ 165mA.Resistance consumption power is (0.165 ÷ 12) 2* 8K Ω=1.51W>1W, so resistance R 1 should be selected 2W for use, 8K Ω.

Claims (4)

1, the online insulation detection device of a kind of DC600V is characterized in that: the online insulation detection device of described DC600V is provided with the insulation control device, earth detector, electric leakage alarm device, DC110V power supply; Wherein, the DC110V power supply is connected with the insulation control device, be its power supply, earth detector is arranged in the current supply circuit of the positive negative wire of DC600V power distribution cabinet, links to each other with the insulation control device, for it provides the leakage current signal, the insulation control device is provided with internal relay, its normally closed electric shock is connected with power supply control contactor KM1, KM2, and normally opened contact is connected with electric leakage alarm device, and moving contact and DC110V power supply join.
2, the online insulation detection device of DC600V as claimed in claim 1 is characterized in that: described electric leakage alarm device is the electric leakage pilot lamp.
3, the online insulation detection device of DC600V as claimed in claim 1, it is characterized in that: the online insulation detection device of described DC600V also is provided with test circuit, described test circuit comprises the DC110V power supply that is serially connected in the loop, testing button SB1, earth detector and test resistance R1.
4, as claim 1 or the online insulation detection device of 3 described DC600V, it is characterized in that: described earth detector is a current sensor.
CN 200820183385 2008-12-12 2008-12-12 DC600V online insulating detection device CN201331563Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200820183385 CN201331563Y (en) 2008-12-12 2008-12-12 DC600V online insulating detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200820183385 CN201331563Y (en) 2008-12-12 2008-12-12 DC600V online insulating detection device

Publications (1)

Publication Number Publication Date
CN201331563Y true CN201331563Y (en) 2009-10-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200820183385 CN201331563Y (en) 2008-12-12 2008-12-12 DC600V online insulating detection device

Country Status (1)

Country Link
CN (1) CN201331563Y (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102565648A (en) * 2012-02-17 2012-07-11 青岛四方车辆研究所有限公司 DC600V main line on-line insulation monitoring device
CN102628915A (en) * 2012-03-28 2012-08-08 中国海洋石油总公司 Electrical submersible pump on-line insulation detection device
CN103399266A (en) * 2013-08-16 2013-11-20 常熟市苏常工程质量检测有限公司 Insulation performance testing equipment
CN103439627A (en) * 2013-09-14 2013-12-11 株洲中车轨道交通装备有限公司 Train power supply leakage current detecting system and method
WO2014032395A1 (en) * 2012-08-27 2014-03-06 北京四方继保自动化股份有限公司 Anti-interference switching value transmission circuit
CN106501658A (en) * 2016-11-04 2017-03-15 国网山西省电力公司大同供电公司 A kind of system for wire detection of electrical leakage
CN108023393A (en) * 2017-11-16 2018-05-11 广新海事重工股份有限公司 A kind of New Marine charging and conversion equipment
CN108828393A (en) * 2018-09-17 2018-11-16 中车青岛四方车辆研究所有限公司 DC110V on-line insulation monitoring system and method

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102565648A (en) * 2012-02-17 2012-07-11 青岛四方车辆研究所有限公司 DC600V main line on-line insulation monitoring device
CN102628915A (en) * 2012-03-28 2012-08-08 中国海洋石油总公司 Electrical submersible pump on-line insulation detection device
CN102628915B (en) * 2012-03-28 2014-04-16 中国海洋石油总公司 Electrical submersible pump on-line insulation detection device
GB2517368A (en) * 2012-08-27 2015-02-18 Beijing Sifang Automation Co Anti-interference switching value transmission circuit
US9679726B2 (en) 2012-08-27 2017-06-13 Beijing Sifang Automation Co., Ltd Anti-interference switch signal transmission circuit
WO2014032395A1 (en) * 2012-08-27 2014-03-06 北京四方继保自动化股份有限公司 Anti-interference switching value transmission circuit
GB2517368B (en) * 2012-08-27 2020-06-17 Beijing Sifang Automation Co Anti-interference switch signal transmission circuit
CN103399266A (en) * 2013-08-16 2013-11-20 常熟市苏常工程质量检测有限公司 Insulation performance testing equipment
CN103439627A (en) * 2013-09-14 2013-12-11 株洲中车轨道交通装备有限公司 Train power supply leakage current detecting system and method
CN103439627B (en) * 2013-09-14 2015-12-23 株洲中车轨道交通装备有限公司 Train power supply leakage current test system and detection method
CN106501658A (en) * 2016-11-04 2017-03-15 国网山西省电力公司大同供电公司 A kind of system for wire detection of electrical leakage
CN106501658B (en) * 2016-11-04 2019-03-29 国网山西省电力公司大同供电公司 A kind of system for conducting wire detection of electrical leakage
CN108023393A (en) * 2017-11-16 2018-05-11 广新海事重工股份有限公司 A kind of New Marine charging and conversion equipment
CN108828393A (en) * 2018-09-17 2018-11-16 中车青岛四方车辆研究所有限公司 DC110V on-line insulation monitoring system and method

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

Granted publication date: 20091021

Termination date: 20161212