Device for quickly measuring cable insulation strength

Abstract

The invention relates to a device for rapidly measuring cable insulation strength. The device comprises a body and a wire-arranging plate, wherein the left side of the body is provided with the wire-arranging plate, fourteen wire-arranging grooves are uniformly formed in the wire-arranging plate, each wire-arranging groove is provided with a corresponding outgoing wire, clamps are arranged above the middle parts of the wire-arranging grooves, an insulating upper plate is arranged above the joint of the left side of the body and the wire-arranging plate, an insulating lower plate is arranged below the insulating upper plate, a sliding groove is formed below the right side of the insulating upper plate and the insulating lower plate, a bottom plate is arranged at the bottom part of the sliding groove, fourteen conducting strips are evenly arranged on the bottom plate, a first telescopic conductor is arranged above the conducting strips, a connecting piece is arranged below the first telescopic conductor, and an insulating tap A is arranged below the connecting piece. The device has the advantages that the working time is greatly shortened, the working efficiency is improved, the labor intensity is reduced, and meanwhile, the working errors caused by connecting and replacing different cables for multiple times are avoided.

Description

technical field [0001] The invention belongs to the technical field of cables, and in particular relates to a device for quickly measuring the insulation strength of cables. Background technique [0002] In the process of regular inspection of the main transformer and line of the substation, in order to ensure that the protection can operate correctly, it is often necessary to test the cable insulation strength of the secondary control circuit of the circuit breaker to verify the good insulation performance of the control circuit. , to ensure that the circuit breaker can operate correctly after the protection is started; if the insulation strength of the cable is not enough, it will seriously affect the accuracy of the protection, and may also cause false or refusal of the protection, which seriously endangers the safe and stable operation of the power grid; therefore, It is particularly important to monitor the insulation strength of the cable before the regular inspection....

AI Technical Summary

Problems solved by technology

[0002] In the process of regular inspection of the main transformer and line of the substation, in order to ensure that the protection can operate correctly, it is often necessary to test the cable insulation strength of the secondary control circuit of the circuit breaker to verify the good insulation performance of the control circuit. , to ensure that the circuit breaker can operate correctly after the protection is started; if the insulation strength of the cable is not enough, it will seriously affect the accuracy of the protection, and may also cause false or refusal of the protection, which seriously endangers the safe and stable operation of the power grid; therefore, It is particularly important to monitor the insulation strength of the cable before the regular inspection. When monitoring the insulation strength of the cable, the number of cables that the staff needs to measure is different for the secondary control circuits of different voltage levels, especially for 220kV When the substation performs regular inspection, the number of cables to be tested is as many as 13, and the measured content includes the dielectric strength of the relative ground and the dielectric strength of the phases. If only the insulation meter is used to test the 13 cables, a total of 91 times are required. It undoubtedly increases the workload and takes a long time; therefore, it provides a device that greatly shortens the working time, improves the working efficiency, reduces the labor intensity, and at the same time avoids the mistakes in work caused by multiple replacement of different cables. is very necessary

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