A voltage divider insulating cap for DC leakage current test of controllable arrester

A DC leakage and current test technology, which is applied in the field of arrester test, can solve the problems of small insulation distance, inability to withstand high voltage, and inability to withstand high voltage, so as to achieve the effect of increasing insulation strength and high safety

CN113341339BActive Publication Date: 2022-08-02MAINTENANCE BRANCH OF STATE GRID HEBEI ELECTRIC POWER +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2022-08-02

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Abstract

The invention discloses a voltage dividing insulating cap for a DC leakage current test of a controllable arrester, comprising a voltage dividing insulating cap body and a gas-filled chamber located in the voltage dividing insulating cap body; the bottom of the voltage dividing insulating cap body is provided with a concave trough, the top of which is a tower-shaped tip. The voltage dividing insulating cap body includes an insulating cap top and an insulating cap side portion fixedly connected below the insulating cap top, and the insulating cap top and the insulating cap side are integrally formed with a silicone rubber material; the insulating cap top and the outer side of the insulating cap side are folded corrugated surfaces. The voltage-bearing insulating cap of the present invention can withstand voltage, and the withstand voltage value is lower than that of the existing controllable arrester in the test; SF 6 The gas insulation has high safety and is more resistant to high voltage; the voltage divider insulating cap can increase the insulation strength, adjust the insulation coordination, and realize the leakage current test of the controllable arrester without removing the controllable switch.
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Description

technical field

[0001] The invention relates to a voltage divider insulating cap for a DC leakage current test of a controllable arrester, and belongs to the technical field of arrester testing. Background technique

[0002] The arrester is connected between the cable and the ground, usually in parallel with the protected equipment. The arrester can effectively protect the communication equipment. Once an abnormal voltage occurs, the arrester will act and play a protective role. When the communication cable or equipment is running under normal working voltage, the arrester will not work, and it is regarded as an open circuit to the ground. Once a high voltage occurs and the insulation of the protected equipment is endangered, the arrester will act immediately to guide the high-voltage surge current to the ground, thereby limiting the voltage amplitude and protecting the insulation of communication cables and equipment. When the overvoltage disappears, the arrester quickly ...

Examples

Embodiment 1

[0075] like figure 1 shown,

[0076] A voltage dividing insulating cap for a DC leakage current test of a controllable arrester, comprising a voltage dividing insulating cap body 10 and an inflatable chamber 2 located in the voltage dividing insulating cap body 10;

[0077] The bottom of the voltage dividing insulating cap body 10 is provided with a groove, and the top thereof is a tower-shaped tip.

[0078] Further, the voltage dividing insulating cap body 10 includes an insulating cap top 11 and an insulating cap side portion 21 fixedly connected below the insulating cap top 11 , and the insulating cap top 11 and the insulating cap side portion 21 are integrally formed with a silicone rubber material. made;

[0079] Further, the outer sides of the insulating cap top 11 and the insulating cap side portions 21 are both folded corrugated surfaces.

[0080] Further, the center of the top surface of the top 11 of the insulating cap is provided with SF for filling 6 Gas inflat...

Embodiment 2

[0083] like figure 1 shown,

[0084] A voltage dividing insulating cap for a DC leakage current test of a controllable arrester, comprising a voltage dividing insulating cap body 10 and an inflatable chamber 2 located in the voltage dividing insulating cap body 10;

[0085] The bottom of the voltage dividing insulating cap body 10 is provided with a groove, and the top thereof is a tower-shaped tip.

[0086] Further, the voltage dividing insulating cap body 10 includes an insulating cap top 11 and an insulating cap side portion 21 fixedly connected below the insulating cap top 11 , and the insulating cap top 11 and the insulating cap side portion 21 are integrally formed with a silicone rubber material. made;

[0087] Further, the outer sides of the insulating cap top 11 and the insulating cap side portions 21 are both folded corrugated surfaces.

[0088] Further, the center of the top surface of the top 11 of the insulating cap is provided with SF for filling 6 Gas inflat...

Embodiment 3

[0096] like figure 1 and 3 shown,

[0097] A voltage dividing insulating cap for a DC leakage current test of a controllable arrester, comprising a voltage dividing insulating cap body 10 and an inflatable chamber 2 located in the voltage dividing insulating cap body 10;

[0098] The bottom of the voltage dividing insulating cap body 10 is provided with a groove, and the top thereof is a tower-shaped tip.

[0099] Further, the voltage dividing insulating cap body 10 includes an insulating cap top 11 and an insulating cap side portion 21 fixedly connected below the insulating cap top 11 , and the insulating cap top 11 and the insulating cap side portion 21 are integrally formed with a silicone rubber material. made;

[0100] Further, the outer sides of the insulating cap top 11 and the insulating cap side portions 21 are both folded corrugated surfaces.

[0101] Further, the center of the top surface of the top 11 of the insulating cap is provided with SF for filling 6 Gas...