Indicator and method for cable core correction and transformer tripping outlet correction

Abstract

The invention relates to an indicator and a method for cable core correction and transformer tripping outlet correction, and belongs to the technical field of power supply maintenance. According to the technical scheme, an internal detection circuit (102) is formed by parallelly connecting N identical relay action keeping modules, the relay action keeping modules are independent from each other, and each relay action keeping module comprises a relay action part and a switching control keeping part; peripheral equipment comprises a power input part (101) and an operation indicating part (103); and the operation indicating part comprises an operation panel with N pairs of sockets and an indicating lamp, wherein the pair quantity N of the sockets is matched with the quantity N of the relay action keeping modules, and the operation indicating part is used for wiring and indicating the closure conditions of contacts after relays act. By adopting the indicator and the method, the turn-on and turn-off condition of a cable core and the insulation condition of other wire cores can be directly learnt; in tripping matrix test, the action result can be intuitively and accurately judged by viewing the indicating lamp of the external indicating panel; and the indicator is easy to operate, convenient to use and quick and accurate in detection and correction.

Description

technical field [0001] The invention relates to an indicator and a calibration method for cable core calibration and transformer trip outlet calibration, belonging to the technical field of power supply maintenance. Background technique [0002] At present, during the transformation and infrastructure construction of on-site substations, a large number of control cables are used. Whether the cables are well-conducted and whether the one-to-one correspondence between the cable cores is correct directly affects the normal operation of electrical equipment. The proofreading work of the cable core wire is cumbersome and requires carefulness and meticulousness. A slight negligence will damage the equipment or cause an accident. Background Art When checking the core wires of cables on site, two people usually use a walkie-talkie and one person uses a multimeter to test and verify the cores one by one; for example, if the cable has 10 cores, the total number of times of checking is...

AI Technical Summary

Problems solved by technology

The proofreading work of the cable core wire is cumbersome and requires carefulness and meticulousness. A slight negligence will damage the equipment or cause an accident

Background Art When checking the core wires of cables on site, two people usually use walkie-talkies and one person uses a multimeter to test and verify each core; for example, if the cable has 10 cores, the total number of times of checking is at most 1+2+3+...+9+ 10=55 times, the workload is huge

Especially for microcomputer-based transformers, there are many types of protection, and the tripping outlets of each function can be freely combined. The function can control 10 outlets; at present, the potential test is carried out one by one by a special person according to the function. Since the tripping outlet of each function of the protection device is editable, taking 3 functions and 10 outlets as an example, one function needs to be tested. 10 verification tests, a total of 30 tests are required, resulting in low efficiency and poor accuracy when measuring personnel

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