Test device for conducting interval withstand voltage test on GIS (gas insulated switchgear)

Abstract

The invention discloses a test device for GIS interval withstand voltage test, which comprises an airtight casing, an outlet bushing, a first conductive rod, a moving end rotating device, a moving end supporting device and a basin-type insulator; the moving end supporting device is arranged in an airtight At the right end of the casing, the pot insulator is arranged at the left end of the airtight casing; the outlet sleeve is arranged outside the upper end of the airtight casing, the first conductive rod is arranged in the outlet casing, and the first conductive rod extends into the airtight casing and turns The supporting device is electrically connected; the moving end rotating device includes a supporting rotating shaft, an insulating pull rod, a conductive rotating shaft, a rotating seat, a turntable, a moving contact conductive rod and a grounding contact device; Three metal accessories equidistantly install a moving contact conductive rod and two grounding contact devices. The grounding contact devices include insulating pull rods, grounding contact seats, grounding moving contacts and grounding static contacts. Improve the test efficiency of the withstand voltage test, avoid misoperation and improve safety.

Description

technical field [0001] The invention relates to a test device used for GIS interval withstand voltage test. Background technique [0002] Gas-insulated metal-enclosed switchgear (GIS, GAS insulated SWITCHGEAR) is a gas-insulated fully-enclosed combined electrical appliance, which is composed of a circuit breaker, a disconnector, a grounding switch, a transformer, a lightning arrester, a bus bar, connectors and outlet terminals, etc. These devices or components All of them are enclosed in a metal grounded shell, and the interior is filled with a certain pressure of SF6 insulating gas, so it is also called SF6 fully enclosed combination appliance. GIS is not only widely used in the field of high voltage and ultra-high voltage, but also in the field of ultra-high voltage. Compared with conventional open substations, GIS has the advantages of compact structure, small footprint, high reliability, flexible configuration, and convenient installation. , strong security, strong envi...

AI Technical Summary

Problems solved by technology

It can be seen that in order to keep the two phases grounded during the test, the auxiliary device used for the withstand voltage test requires two steps for each item of the test. Conduction, and then turn the rotating screw of the propulsion device to separate one of the grounding devices from the grounding, so the test operation is not fast and convenient. The more operations, the easier it is to cause misoperation. In order to ensure that one phase is conductive, the other two phases are grounded. , it is necessary to detect the connection in the airtight housing every time it is switched

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