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Circuit breaker loop DC resistance auxiliary test tool and method

A technology for DC resistance and auxiliary testing, which is applied in the direction of measuring resistance/reactance/impedance, instruments, measuring electricity, etc. It can solve the problems of plum blossom spring damage test results and inaccuracy, and achieve considerable economic benefits, wide application and strong competition. force effect

Pending Publication Date: 2021-03-16
国网山西省电力公司阳泉供电公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an auxiliary testing tool and method for the circuit breaker circuit DC resistance in order to solve the technical problems that the plum blossom spring is easily damaged and the test result is inaccurate by using the test pliers in the circuit resistance test process of the current circuit breaker.

Method used

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  • Circuit breaker loop DC resistance auxiliary test tool and method
  • Circuit breaker loop DC resistance auxiliary test tool and method
  • Circuit breaker loop DC resistance auxiliary test tool and method

Examples

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Embodiment Construction

[0018] An auxiliary test tool for DC resistance of a circuit breaker circuit, comprising four support arms connected into a movable quadrilateral, and adjacent support arms are connected in rotation; a bearing seat is installed at the connection apex of one of the support arms, and a bearing is installed in the bearing seat. A nut is installed at the other vertex opposite to this vertex, and a screw rod is installed through the bearing and the nut (the screw rod is threaded with the nut and fixedly connected with the inner ring of the bearing), and an insulating handle is installed on the end of the screw rod protruding from the bearing ;The four support arms are divided into a pair of left support arms and a pair of right support arms with the screw rod as the center line; it also includes the left half cylinder and the right half cylinder, and the connection between the inner side of the middle part of the left half cylinder and the pair of left support arms The outer side of...

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Abstract

The invention relates to a circuit breaker loop resistance test technology, and solves the technical problems that a plum blossom spring is easily damaged and a test result is inaccurate due to the adoption of a test clamp in the current circuit breaker loop resistance test process. The invention discloses a circuit breaker loop DC resistance auxiliary test tool and method. When a loop resistancetest is carried out, the circuit breaker loop DC resistance auxiliary test tool extends into a circuit breaker moving contact finger, and then two semicircular cylinders are opened by clockwise rotating an insulating handle, so that the semicircular cylinders are in close contact with the circuit breaker moving contact finger; a loop resistance test wire is connected to a conductive sleeve to complete the loop resistance test; and after the test is finished, the loop resistance test wire is taken down, the two semicircular cylinders are retracted by rotating the insulating handle anticlockwise, so that the semicircular cylinders are separated from the circuit breaker contact finger, and the whole device is taken out.

Description

technical field [0001] The invention relates to circuit breaker circuit resistance testing technology, in particular to an auxiliary test tool and method for circuit breaker circuit DC resistance. Background technique [0002] Circuit breakers play a role in control and protection in the power grid, and can cut off large fault currents. If it breaks down, it will cause a power grid accident or even expand the accident, causing considerable economic and other losses. With the advancement of the construction of the national grid, the reliability of power supply, the quality of power, and the economy have put forward higher requirements for the reliability of circuit breakers. [0003] The DC resistance test of the conductive circuit is the only test method to judge the reliable connection of the static and dynamic contacts of the circuit breaker. The reliable connection of the static and dynamic contacts is one of the main parameters of the quality of the circuit breaker, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/02G01R1/02G01R1/04
CPCG01R27/02G01R1/02G01R1/0408
Inventor 靳海军王成成于瑶章宋亚东贾志义
Owner 国网山西省电力公司阳泉供电公司
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