Portable check system for phase of cable

Abstract

The invention relates to the technology field of electric power, specially relates to a portable check system for the phase of a cable. The system comprises a signal generating device and a signal detecting device. The signal generating device comprises a power source and a signal generating module connected to the output end of the power source. The signal generating module is configured to respectively send a high voltage level signal to the three-phase input end of the cable to be tested. The signal detecting device comprises three detecting circuits respectively connected to the three-phase output ends of the cable to be tested. The detecting circuit comprises a detecting head and a display module. The detecting head is connected to the one-phase output end of the cable to be tested for receiving a high voltage level signal. The display module is configured to perform a check display of the phase according to the received high voltage level signal. The portable check system for thephase of the cable has the following effects that: the test result can be determined only by judging the order in which the display modules are displayed and performing one operation, the problem ofrepeated communication and wiring of the phase test of the cable is solved, and the test efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of electric power, in particular to a portable cable phase checking system. Background technique [0002] According to the more and more popularization of existing networks, large and small cities and even rural areas have begun to distribute networks, most of which are based on 10kV three-core cables, and because there are intermediate connectors and branch boxes inside the 10kV three-core cables, the cables at both ends For the problem that the phase may not correspond, the phase check must be carried out again during the reconstruction and construction of the power facility. [0003] The traditional phase verification methods are mainly divided into two types: insulation resistance meter detection and multimeter detection. The use of an insulation resistance meter to detect phase checks requires the insulation resistance of each phase to be tested in turn. This method has cumbersome test steps and a larg...

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Problems solved by technology

The use of an insulation resistance meter to detect phase checks requires the insulation resistance of each phase to be tested in turn. This method has cumbersome test steps and a large number of tests. The personnel at both ends of the cable need to communicate repeatedly, which takes a long time. In addition, due to the high test voltage of the insulation resistance meter, there are certain problems. Safety risk; using a multimeter to detect the phase check needs to be short-circuited on the opposite side of the cable, and the connectivity test is performed on each phase in turn. This method has cumbersome test steps and many test steps. Personnel at both ends of the cable need to check repeatedly, which takes a long time

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