Multifunctional secondary cable tester

Abstract

The invention discloses a multifunctional secondary cable tester comprising a test host computer and a test slave computer. The test host computer comprises a high voltage generator, a pulse generator and a test analyzer. One end of the high voltage generator is connected with a power supply with test voltage of AC500V, and the other end is connected with the interface of the test host computer. One end, which is arranged in the internal part of the test host computer, of the pulse generator is connected with the high voltage generator, and the other is connected with one segment of a secondary cable. The test slave computer is connected with the test host computer via the port of the slave computer and connected with the other end of the secondary cable via another interface of the test host computer. The test analyzer receives a pulse signal generated by the pulse generator and analyzes and processes the pulse signal. The tester is complete in function, and has functions of wire mark checking, wire core open circuit and short circuit detection and insulation testing. Besides, single impact high voltage is generated via the high voltage generator and two test low voltage pulses are generated twice via the pulse generator to be guided to the fault phase of a fault cable, and the generated feedback signal is analyzed by the test analyzer for a fault result.

Description

technical field [0001] The invention relates to the field of cable testing, in particular to a multifunctional secondary cable tester. Background technique [0002] Secondary cables refer to cables used for control, signal transmission and feedback, such as motor operating column control cables, metering, protection, and electrical communication cables, all of which are secondary cables. The primary cable refers to the power cable, that is, the cable that provides power to the electrical equipment. The installation or transformation of the secondary system of a general substation requires the use of a large number of secondary cables. According to the technical requirements of installation and commissioning, it is necessary to check the wire number of the secondary cable to determine whether the label is correct and whether there is a broken core; it is necessary to test the insulation condition of each wire core to prevent the cable core from being short-circuited and grou...

AI Technical Summary

Problems solved by technology

The conventional method is to use a multimeter and a secondary shaker to check the wire number, judge whether there is an open circuit, a short circuit, and the insulation level. When testing, it is necessary to have staff at both ends of the cable, use communication methods such as walkie-talkies, and check the wire cores one by one. After checking, for the secondary cables used in the entire substation, the workload of secondary cable testing is huge, and the test consumes a long time

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