Cable searching and identification method

Abstract

The invention discloses a cable searching and identification method and belongs to the field of assembling of electrical equipment. By use of the method, in a designated position of a cable trench where high voltage cables are laid, a certain high voltage cable or low voltage cable or multiple high voltage cables or low voltage cables are searched and identified from multiple wound high voltage cables or low voltage cables, and by use of two cable checking devices, one current generator and one clamp-on ammeter, by carrying out cable disassembling, cable checking, measurement through electrification, shielding wire checking through scaling and secondary electrification single phase measurement and confirmation on the high voltage cables or the low voltage cables which are to be searched and recognized, searching and recognition of the high voltage cables or the low voltage cables are finished. According to the invention, the method is safe and reliable; the efficiency is high; searching processes can be finished only by use of a normal tool; and the method is low in cost and highly practical.

Description

technical field [0001] The invention belongs to the field of electrical equipment assembly, and relates to a cable search and identification method, in particular to a search and identification method for one or more high-voltage cables or low-voltage cables from among several high-voltage cables or low-voltage cables at a designated position in a cable trench Methods. Background technique [0002] At present, many production-oriented enterprises in China still use the early high-voltage power distribution facilities. Due to the needs of the production situation, the old high-voltage power distribution facilities can no longer meet the needs of production. Therefore, it is necessary to modify the high-voltage cabinets in the high-voltage power distribution facilities. , considering the cost saving factor, the high-voltage cables are generally rerouted without replacement during the transformation, which requires the original high-voltage cables to be pulled out to the high-v...

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Problems solved by technology

[0002] At present, many production-oriented enterprises in China still use the early high-voltage power distribution facilities. Due to the needs of the production situation, the old high-voltage power distribution facilities can no longer meet the needs of production. Therefore, it is necessary to modify the high-voltage cabinets in the high-voltage power distribution facilities. , considering the cost saving factor, the high-voltage cables are generally rerouted without replacement during the transformation, which requires the original high-voltage cables to be pulled out to the high-voltage power distribution room. When passing through the wall of the high-voltage power distribution room, waterproof treatment is generally done, so that the high-voltage cables that need to be transformed are poured together in the cable trench with glue-mixed cement. A single cable cannot be identified and cannot be pulled out. The cable trench outside the wall of the high-voltage power distribution room disconnects the cables and then connects them with new cables. However, due to the production needs of the enterprise, all the power cannot be cut off, and the load must be reversed one by one. Therefore, only one of the multiple high-voltage cables does not carry high-voltage power, and the rest Each high-voltage cable is carrying high-voltage electricity. How to find out this uncharged high-voltage cable from a pile of high-voltage cables in a complex environment has become a difficult problem that restricts the progress of the transformation of old high-voltage power distribution facilities in the early stage.

The traditional solution is to touch the high-voltage cable first. It is estimated that the high-voltage cable is driven into the high-voltage cable with a nail gun. The high-voltage cabinet is tripped due to the grounding of the cable, and the safety is extremely poor. If there are a large number of high-voltage cables in the cable trench and they are entangled or poured together with glue and cement, this method will not be carried out. If the cables are replaced with new ones, it will be too late. The high cost of cable materials will lead to a substantial increase in the cost of transformation; similarly, if a similar situation occurs during the transformation of low-voltage power distribution facilities, the transformation work cannot be carried out

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