NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
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NOYAFA Electronic specializing in testing instruments and cable testers for 16 years
Author: Noyafa–Cable Length Tester
1. Main insulation fault The insulation between the conductor core wire and the ground or metal shielding layer of the cable is damaged, resulting in various types of faults. Generally speaking, most of the faults of 35K∨ and below cables belong to this type of fault. 2. Sheath fault generally refers to the fault caused by damage to the metal sheath (layer) or insulating sheath of the cable. In practice, the fault of the insulating sheath between the metal sheath and the earth can be found.
Such failures are mostly leaky failures. Sheath faults are only involved in cables with high voltage levels of 66KV and above. 3. The complete transmission cable is composed of the cable body and the cable joint.
Therefore, the fault of the cable must occur in the cable body and the cable joint. The body of the cable can have faults of different natures. Usually due to product quality and external damage as the main reasons.
4. The cable is used for power supply when the connector is faulty. No matter the length of the cable, there must be two connectors at the terminal and the beginning. For long-distance power supply cables or when the cable is faulty and repaired, the cable must also have a connector, that is, an intermediate connector. Usually a considerable part of the cable fault is the joint fault, and its performance is different.
But usually multi-phase-to-ground leakage high-resistance faults are the majority. High-voltage test manufacturer Shenzhen Noyafa Electronic Technology Co., Ltd. where the cable fault occurred.
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