1) After the cable fault occurs, first, according to the phenomenon and state of the fault, correctly judge the fault type, and timely report to the mine dispatching and mechanical and electrical department, and organize relevant personnel to deal with it quickly.
2) In case of fire caused by cable fault, the power supply of the fault cable shall be cut off immediately, and the fire fighting and disaster relief shall be carried out at the right time. When the fire spreads too fast and cannot be put out immediately, the nearby mining (excavation) area shall be informed immediately, and the mine leaders shall be reported to take further fire-fighting measures, or put out the fire according to the mine's disaster relief plan.
3) When the ground test method is used to test the fault of underground armored cable, the gas concentration in the air flow of the air inlet tunnel must be less than 1%. For underground mining (excavation) working face, when using ordinary portable electrical measuring instrument to measure cable fault, the gas content of the place must be checked by gas inspector, only when the gas concentration is less than 1%, can it be used.
4) When the underground rubber sleeve cable fails, it should be analyzed and judged according to the fault phenomenon to determine the fault type and fault point. When dealing with the fault, the fault cable must be completely separated from other cables before testing and handling.
5) When the switch connecting the cable trips, the maintenance electrician shall be responsible for finding out the cause, and the gas inspector shall check the gas concentration in the section where the fault cable is located. When the concentration is less than 1%, the detection can be carried out. It is strictly forbidden to judge and find the fault point of the fault cable in the mine with coal (rock) and gas outburst and in the gas emission area by trial power transmission.