Monolithic insulation test tool for carbon ceramic linear resistor

A linear resistance and insulation test technology, which is applied in the direction of measuring electricity, measuring devices, measuring electrical variables, etc., can solve the problems of inability to perform separate insulation tests on a single piece of resistance

Pending Publication Date: 2021-05-07
PINGGAO GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a carbon ceramic linear resistance monolithic insulation test tool to solve the technical problem in the prior art that the resistance monolithic insulation test cannot be performed separately

Method used

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  • Monolithic insulation test tool for carbon ceramic linear resistor
  • Monolithic insulation test tool for carbon ceramic linear resistor
  • Monolithic insulation test tool for carbon ceramic linear resistor

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0042] Such as Figure 1 to Figure 4 As shown, the carbon ceramic linear resistor monolithic insulation test tool (hereinafter referred to as the test tool) provides the required gas environment and pre-tightening force for the insulation performance test of the resistance monolithic 200, and the gas environment and pre-tightening force can be adjusted Change. The resistor monolith 200 here is a carbon ceramic linear resistor monolith.

[0043]The test tooling includes a cavity 101, the cavity 101 extends up and down, the cavity 101 includes a cylinder 1011 in the middle, an upper cover 1012 above and a lower cover 1013 below, the cylinder 1011 extends up and down and has an inner cavity in the middle, the cylinder 1011 There are flanges on the upper and lower sides, the upper cover 1012 is fixed on the top of the cylinder 1011 by bolts, and the lower cover 1013 is fixed on the bottom of the cylinder 1011 by bolts. There is a closed air chamber inside the cavity 101 , and th...

Embodiment 1

[0066] In Embodiment 1, the main body of the cavity includes a cylinder and a lower cover that are assembled separately. In this embodiment, the cylinder body and the lower cover can be of an integral structure, and the shape of the main part in the cavity can be changed, such as a square shape.

specific Embodiment 3

[0068] In Embodiment 1, the insulator in the upper connection terminal is provided with screw holes, and is installed on the upper cover by means of screw fixing. In this embodiment, the insulator can be an insulating sleeve, which is fixed on the outside of the conductor, and the insulating sleeve is adapted to be worn in the hole of the copper rod. In order to improve the sealing performance, a sealing ring can be installed on the outer peripheral surface of the insulating sleeve.

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Abstract

The invention relates to a monolithic insulation test tool for the carbon ceramic linear resistor; the test tool comprises a cavity, a main body part with an opening at the upper end and an upper cover for closing the opening at the upper end, the main body part and the upper cover are matched to form a closed air chamber, and the cavity is provided with an inflation inlet communicated with the air chamber; the main body part comprises a conductive supporting part for upwards supporting the monolithic resistor; the test tool comprises a wiring part connected with the conductive supporting part; the test tool further comprises an upper wiring terminal fixedly arranged on the upper cover, the upper wiring terminal comprises a middle electric conductor and an insulator fixedly arranged outside the electric conductor, the electric conductor downwards penetrates into the air chamber, and the insulator is used for being connected with the upper cover in a sealed mode. The test tool further comprises an elastic conductive piece arranged below the conductor, and the elastic conductive piece comprises a spring which directly or indirectly elastically presses the single resistor sheet and is conductively communicated with the single resistor sheet.

Description

technical field [0001] The invention relates to a carbon ceramic linear resistor monolithic insulation test tool. Background technique [0002] As the parallel resistance of the breaker fracture, carbon ceramic linear resistance is one of the key electrical protection components of ultra-high voltage power transmission and transformation equipment. It is used to limit the overvoltage caused by the high-voltage circuit breaker during the opening and closing operation. It is very important for the safe and stable operation of the power grid to avoid the damage of overvoltage to power equipment, realize fast and reliable removal of fault circuits, and ensure the normal operation of non-fault parts. [0003] The resistivity of carbon ceramic linear resistors is low, usually within the range of 1-1000Ω•cm, and the resistive surface is in a non-insulating semiconductor state. During the sintering process of carbon ceramic linear resistors, tiny defects may appear on the side and ...

Claims

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Application Information

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IPC IPC(8): G01R31/12
CPCG01R31/1263
Inventor 宋继光李凯郝留成姜珊盼陈维陈蕊徐仲勋孙清超王亚祥赵新科王汉瑶王红超庞亚娟李晓光徐晨博
Owner PINGGAO GRP
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