Common fault analysis:
1. Wire and cable damage caused by transmission voltage overload;
2. Wire and cable damage caused by mechanical external force;
3. Chemical carbonization of wire and cable caused by physical industry;
4. Insulation aging;
5. Quality problems.
Common maintenance methods and requirements:
1. Preventive maintenance technology;
2. Work state maintenance during operation;
3. Maintenance after the fault occurs after the fault occurs;
4. Operational requirements.
Preventive measures for common faults:
1. Strengthen the pre-test of electrician symbiosis equipment;
2. Strengthen supervision and management of wire and cable;
3. Shorten wire and cable inspection cycle.