Discussion on the problems that should be paid attention to in the application of cable fault tester

The test of the cable fault tester is a system engineering that sums up various experiences and skills, and its test method is not single. In practice, various testing methods should be used flexibly. In general, cable fault testers are gradually accepted and used by power supply companies, and it is believed that this kind of instrument will become the primary instrument for cable testing in the next few years. Due to the high price of the buried cable fault tester, the following points should be paid attention to when purchasing and using:

1. When purchasing a cable fault tester, it is necessary to conduct careful research and investigate the development status of the manufacturer. Generally, the products of regular manufacturers are not only safe and reliable in quality, but also have a high market share, and their technical training and after-sales services are guaranteed. This is especially important for the corporate culture of agricultural power supply logistics with tight funds and lack of experience.

2. The operator of the buried cable fault tester must receive training before operating the tester, especially the high voltage test skills must have sufficient understanding and attention.

3. The high-voltage DC pulse power supply used for cable fault tester testing should generally choose a power supply with an output voltage of less than 15,000 volts. The output voltage of the power supply should be controlled within 10,000 volts, and there must be cables in the test circuit, which can form a high-voltage pulse energy instantaneous release circuit. Prevent high voltage pulses between good cables or between good grounded cables.

4. When the cable fault tester conducts high-voltage tests, other cables in the same cable trench should be temporarily powered off, and the test end and the user end of the tested cable should be guarded by special personnel. The user end cable should be separated from the indoor power supply cable to ensure personal safety and electrical safety.

5. Discharge the high voltage end of the system after the buried cable fault analysis tester is tested.

HZ-501B Cable Fault Location System