CN203587699U - Insulation resistance testing device - Google Patents

Insulation resistance testing device Download PDF

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Publication number
CN203587699U
CN203587699U CN201320636894.4U CN201320636894U CN203587699U CN 203587699 U CN203587699 U CN 203587699U CN 201320636894 U CN201320636894 U CN 201320636894U CN 203587699 U CN203587699 U CN 203587699U
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CN
China
Prior art keywords
voltage
circuit
module
stabilizing
display module
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Expired - Lifetime
Application number
CN201320636894.4U
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Chinese (zh)
Inventor
孟宪强
庄珍花
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.)
China Railway Signal and Communication Shanghai Engineering Bureau Group Co Ltd
Original Assignee
China Railway Signal and Communication Shanghai International Engineering Co Ltd
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Priority to CN201320636894.4U priority Critical patent/CN203587699U/en
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Publication of CN203587699U publication Critical patent/CN203587699U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to an insulation resistance testing device comprising a DC boost module, a voltage-stabilizing and protecting module, a measurement display module. The DC boost module is connected with a load and the measurement display module and supplies power to the load and the measurement display module. The voltage-stabilizing protection module is connected with the DC boost module and performs voltage stabilization and protection. The measurement display module is connected with the load and detects and displays a measured insulation resistance value. Compared with a product in the prior art, the insulation resistance testing device has advantages of convenient detection and high accuracy.

Description

Test device for insulation resistance
Technical field
The utility model relates to the load testing device in a kind of Urban Railway Substation, especially relates to a kind of test device for insulation resistance.
Background technology
Insulation resistance is the most basic insulation index of electrical equipment and electric wiring.For the commissioning test of low-voltage electrical appliance, under normal temperature, the insulation resistance of motor, controller switching equipment and distribution line should be lower than 0.5M Ω (for operating equipment and circuit, insulation resistance should be lower than 1M Ω/kV).The insulation resistance of low-voltage electrical apparatus and stube cable thereof and secondary circuit generally should be lower than 1M Ω; Should be lower than 0.5M Ω at moister environment; The insulation resistance of the little bus of secondary circuit should be lower than 10M Ω.The insulation resistance of I class electric hand tool should be lower than 2M Ω.
When cable heated and being subject to the time of tide, insulating material is just aging, and its insulation resistance just reduces.If long-term apparatus insulated resistance is too low, can make whole electrical system occur various faults.In current field of track traffic, the load equipment in each transformer station easily makes moist, and therefore need to adopt special equipment to detect its insulation resistance, to pinpoint the problems in time and got rid of.
Utility model content
The purpose of this utility model is exactly to provide a kind of test device for insulation resistance in order to overcome the defect of above-mentioned prior art existence.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of test device for insulation resistance; comprise DC boosting module, voltage-stabilizing protection module, measure display module; described DC boosting module connects load and measures display module; be respectively load and measure display module power supply is provided; described voltage-stabilizing protection module connects DC boosting module; carry out voltage stabilizing and protection, described measurement display module connects load, detects and shows the insulating resistance value recording.
DC boosting module comprises low-voltage DC voltage-stabilizing circuit, series control circuit, high-frequency impulse circuit, the rectifier filter circuit connecting successively, the output terminal of low-voltage DC voltage-stabilizing circuit also connects measurement display module, and the output terminal of rectifier filter circuit connects load.Low-voltage DC voltage-stabilizing circuit to input power voltage stabilizing after, one tunnel may be output to measures display module for its power supply, series control circuit is inputted on another road, by series control circuit, make high-frequency impulse circuit produce high-frequency impulse, by and its circuit in potentiometer be adjusted to the pulsewidth voltage of high frequency, finally via rectifier filter circuit, pulsewidth voltage commutation is to DC voltage, by the divider resistance of rectifier filter circuit inside, can export different voltage, as the operating voltage of test insulating resistance value, input load.
The input end of described low-voltage DC voltage-stabilizing circuit connects 110V power supply, can directly use straight-flow system voltage in transformer station as input voltage, more for convenience; And the output voltage of the output terminal of rectifier filter circuit comprises 5kV, 2.5kV and 1kV, go for the test of most loads.
Described voltage-stabilizing protection module connects high-voltage rectifying filtering circuit and series control circuit, for controlling the amplitude of output voltage, reduces ripple, simultaneously holding circuit.
Described measurement display module comprises current detector, controller and the display connecting successively, and described current detector connects load, and display can adopt liquid crystal digital display, and clear reading conveniently reads.
The coated aluminum hull in outside of this proving installation, and this aluminum hull ground connection, can reduce the outside interference to internal circuit.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
Embodiment
As shown in Figure 1; a kind of test device for insulation resistance; comprise DC boosting module 1, voltage-stabilizing protection module 2, measure display module 3; DC boosting module 1 connects load 4 and measures display module 3; being respectively load 4 and measuring display module 3 provides power supply, and voltage-stabilizing protection module 2 connects DC boosting module, carries out voltage stabilizing and protection; described measurement display module 3 connects loads 4, detects and shows the insulating resistance value recording.
Wherein, DC boosting module 1 comprises low-voltage DC voltage-stabilizing circuit 11, series control circuit 12, high-frequency impulse circuit 13, the rectifier filter circuit 14 connecting successively, the output terminal of low-voltage DC voltage-stabilizing circuit 11 also connects measures display module 3, and the output terminal of rectifier filter circuit 14 connects load 4.After 11 pairs of input power voltage stabilizings of low-voltage DC voltage-stabilizing circuit, one tunnel may be output to measures display module 3 for its power supply, series control circuit 12 is inputted on another road, by series control circuit 12, make high-frequency impulse circuit 13 produce high-frequency impulse, by and its circuit in potentiometer be adjusted to the pulsewidth voltage of high frequency, finally via rectifier filter circuit 14, pulsewidth voltage commutation is to DC voltage, by the divider resistance of rectifier filter circuit 14 inside, can export different voltage, as the operating voltage of test insulating resistance value, input load.
The input end of low-voltage DC voltage-stabilizing circuit 11 connects 110V power supply, can directly use straight-flow system voltage in transformer station as input voltage, more for convenience; And the output voltage of the output terminal of rectifier filter circuit 14 comprises 5kV, 2.5kV and 1kV, go for the test of most loads.
Voltage-stabilizing protection module 2 connects high-voltage rectifying filtering circuit 14 and series control circuit 12, for controlling the amplitude of output voltage, reduces ripple, simultaneously holding circuit.Measure display module and comprise current detector, controller and the display connecting successively, described current detector connects load, and display can adopt liquid crystal digital display, and clear reading conveniently reads.
In addition, the outside of this proving installation is coated aluminum hull,, and this aluminum hull ground connection, can reduce the outside interference to internal circuit, improve the accuracy of test number.

Claims (6)

1. a test device for insulation resistance; it is characterized in that; comprise DC boosting module, voltage-stabilizing protection module, measure display module; described DC boosting module connects load and measures display module; being respectively load and measuring display module provides power supply, and described voltage-stabilizing protection module connects DC boosting module, carries out voltage stabilizing and protection; described measurement display module connects load, detects and shows the insulating resistance value recording.
2. proving installation according to claim 1, it is characterized in that, described DC boosting module comprises low-voltage DC voltage-stabilizing circuit, series control circuit, high-frequency impulse circuit, the rectifier filter circuit connecting successively, the output terminal of low-voltage DC voltage-stabilizing circuit also connects measurement display module, and the output terminal of rectifier filter circuit connects load.
3. proving installation according to claim 2, is characterized in that, the input end of described low-voltage DC voltage-stabilizing circuit connects 110V power supply, and the output voltage of the output terminal of rectifier filter circuit comprises 5kV, 2.5kV and 1kV.
4. proving installation according to claim 2, is characterized in that, described voltage-stabilizing protection module connects high-voltage rectifying filtering circuit and series control circuit.
5. according to the proving installation described in claim 1-4 any one, it is characterized in that, described measurement display module comprises current detector, controller and the display connecting successively, and described current detector connects load.
6. according to the proving installation described in claim 1-4 any one, it is characterized in that the coated aluminum hull in outside of this proving installation, and this aluminum hull ground connection.
CN201320636894.4U 2013-10-15 2013-10-15 Insulation resistance testing device Expired - Lifetime CN203587699U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320636894.4U CN203587699U (en) 2013-10-15 2013-10-15 Insulation resistance testing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320636894.4U CN203587699U (en) 2013-10-15 2013-10-15 Insulation resistance testing device

Publications (1)

Publication Number Publication Date
CN203587699U true CN203587699U (en) 2014-05-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320636894.4U Expired - Lifetime CN203587699U (en) 2013-10-15 2013-10-15 Insulation resistance testing device

Country Status (1)

Country Link
CN (1) CN203587699U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105785128A (en) * 2016-04-29 2016-07-20 苏州华电电气股份有限公司 Power transmission line insulation measurement test device
CN110554286A (en) * 2019-09-16 2019-12-10 桂林理工大学 Voltage-adjustable insulation detection device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105785128A (en) * 2016-04-29 2016-07-20 苏州华电电气股份有限公司 Power transmission line insulation measurement test device
CN110554286A (en) * 2019-09-16 2019-12-10 桂林理工大学 Voltage-adjustable insulation detection device

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C41 Transfer of patent application or patent right or utility model
TR01 Transfer of patent right

Effective date of registration: 20161021

Address after: 200436 No. 248 West Road, Shanghai

Patentee after: CHINA RAILWAY SIGNAL & COMMUNICATION SHANGHAI ENGINEERING BUREAU GROUP Co.,Ltd.

Address before: 200436 room 86, 88 and three, 501 Road, Zhabei District, Shanghai

Patentee before: CHINA RAILWAY SIGNAL & COMMUNICATION SHANGHAI ENGINEERING INTERNATIONAL Co.,Ltd.

CX01 Expiry of patent term

Granted publication date: 20140507

CX01 Expiry of patent term