Voltage-dividing insulation cap for DC leakage current test of controllable lightning arrester

A DC leakage and current test technology, which is applied in the field of lightning arrester test, can solve the problems of not being able to withstand high voltage, small insulation distance, and not being able to withstand high voltage, so as to achieve high safety and increase the effect of insulation strength

CN113341339AActive Publication Date: 2021-09-03MAINTENANCE BRANCH OF STATE GRID HEBEI ELECTRIC POWER +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-09-03

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Abstract

The invention discloses a voltage-dividing insulation cap for a DC leakage current test of a controllable lightning arrester. The voltage-dividing insulation cap comprises a voltage-dividing insulation cap body and an inflation chamber located in the voltage-dividing insulation cap body. The bottom of the voltage-dividing insulation cap body is provided with a groove, and the top of the voltage-dividing insulation cap body is a tower-shaped tip. The voltage-dividing insulation cap body comprises an insulation cap top and an insulation cap side part fixedly connected to the lower part of the insulation cap top, and the insulation cap top and the insulation cap side part are integrally formed and manufactured by adopting a silicon rubber material; and the outer sides of the insulating cap top and the insulating cap side parts are folded corrugated surfaces. The voltage dividing insulation cap bears voltage, and the borne voltage value is reduced compared with that of an existing controllable lightning arrester in a test; SF6 gas is high in insulation safety and more resistant to high voltage; and the voltage-dividing insulating cap can play a role in increasing the insulating strength and adjusting the insulating cooperation, and the leakage current test of the controllable lightning arrester can be completed without dismounting the controllable switch.
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Description

technical field

[0001] The invention relates to a voltage-dividing insulating cap for a DC leakage current test of a controllable arrester, which belongs to the technical field of arrester tests. Background technique

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

Examples

Embodiment 1

[0075] Such as figure 1 as 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 air-filled 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 its top 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 part 21 fixedly connected under the insulating cap top 11, and the insulating cap top 11 and the insulating cap side part 21 are integrally formed of silicon rubber made;

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

[0080] Further, the center of the top surface of the top 11 of the insulating cap is opened for filling SF 6 Gas charging port 3; the charging port 3 is sealed and ...

Embodiment 2

[0083] Such as figure 1 as 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 air-filled 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 its top 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 part 21 fixedly connected under the insulating cap top 11, and the insulating cap top 11 and the insulating cap side part 21 are integrally formed of silicon rubber made;

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

[0088] Further, the center of the top surface of the top 11 of the insulating cap is opened for filling SF 6 Gas charging port 3; the charging port 3 is sealed and ...

Embodiment 3

[0096] Such as figure 1 with 3 as 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 air-filled 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 its top 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 part 21 fixedly connected under the insulating cap top 11, and the insulating cap top 11 and the insulating cap side part 21 are integrally formed of silicon rubber made;

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

[0101] Further, the center of the top surface of the top 11 of the insulating cap is opened for filling SF 6 Gas charging port 3; the charging port 3 is sea...