Maintenance electricians must receive safety education and master the basic knowledge of electricians and safety operation procedures within the scope of work before they can participate in the actual operation of electricians. 1. The conditions that a maintenance electrician should meet (1) must be healthy and mentally normal. Anyone who suffers from hypertension, heart disease, tracheal asthma, nervous system diseases, color blindness, hearing impairment and severely impaired limb function cannot engage in maintenance electrician work. (2) must pass the formal skills appraisal station examination and hold a maintenance electrician operation certificate. (3) We must learn and master electric shock first aid and artificial respiration. 2. Maintenance electrician's personal safety knowledge (1) In the process of electrical equipment installation and maintenance, all kinds of safety operation rules and regulations must be strictly observed, and no dereliction of duty is allowed. (2) When operating, strictly observe the power failure part. When operating, take all safety measures to prevent sudden power transmission, such as hanging "Someone is working, no closing!" Warning signs, locking the knife or removing the main power supply fuse, etc. It is not allowed to send electricity at the appointed time. (3) When working near live parts, ensure a reliable and safe distance. (4) Before operation, carefully check the insulation performance of working tools and the insulation performance of safety appliances such as insulating shoes and gloves. If there is any problem, replace them immediately and check them regularly. (5) Climbing tools must be safe and reliable, and climbing operations are not allowed without climbing training. (6) If anyone is found to get an electric shock, correct rescue measures should be taken immediately. 3. Knowledge of equipment operation safety (1) Electrical equipment, devices and lines that have failed should not be used any more, so as to avoid the accident expanding, and must be overhauled in time. (2) It must be operated in strict accordance with the equipment operation procedures, and the isolating switch must be closed first before the load switch is closed when the power supply is connected; When disconnecting the power supply, the load switch should be cut off first, and then the isolating switch should be cut off. (3) When it is necessary to cut off the power supply in the fault area, the power outage range should be minimized. If there is a shunt switch, try to cut off the shunt switch in the fault area and try to avoid cutting off the power supply. (4) Electrical equipment should not be affected with damp generally, and measures should be taken to prevent rain, snow and moisture from invading. Electrical equipment will generate heat during operation, so good ventilation conditions must be maintained, and some even have fire prevention measures. If there are exposed and live equipment, especially high-voltage electrical equipment, measures should be taken to prevent small animals from entering and causing short-circuit accidents. (5) The metal shell of all electrical equipment should have reliable protective grounding measures. All electrical equipment that may be struck by lightning shall be equipped with lightning protection facilities. A, lighting circuit maintenance 1. Disconnect the relevant switches and knife switches, remove the fuse, and check the electricity to prove that there is no voltage before proceeding. 2. The sign "No closing, someone working" should be hung on the disconnected circuit breaker. 3. When it is necessary to carry out live maintenance or find faults, the loads (such as light bulbs and instrument voltage coils) should be removed to prevent electric shock to human circuits. 4. When working on a ladder, safety measures must be taken to prevent falling from a height, and maintenance work must be carried out by two people. Second, the maintenance of low-voltage motor and connecting equipment 1. Disconnect the switch and circuit breaker, remove the fuses of the main circuit and the control circuit, and start working only after you have no piezoelectric experience. 2. Hang "No closing, someone is working" signs on switches and circuit breakers. 3. When repairing the coupling that does not separate the motor from the mechanical part, measures should be taken to prevent the motor from rotating due to the machinery driven by the motor. 4. It is forbidden to work on the rotating low-voltage motor and its control loop. 5. When looking for faults when the equipment is charged, you must stand on the insulating mat and put on insulating shoes, gloves and goggles, and you must also prevent short circuit between phases. 6. It is strictly prohibited to replace the fuse immediately and force power transmission without finding out the fault, so as to prevent further accidents or personal accidents or equipment accidents. 7. This work has not been completely finished. If you need to test the motor, be sure to contact the relevant personnel around you. 8. The maintenance of low-voltage motor and coupling equipment must be carried out by two people. Third, the maintenance of the secondary circuit (a) current transformer 1. It is forbidden to open the secondary side of current transformer. 2. Short-circuit pieces or short wires must be used for the secondary winding of short-circuit current transformer, and the short circuit should be reliable. Wire winding is strictly prohibited. 3. It is forbidden to do any work on the circuit and wire between the current transformer and the short-circuit terminal. 4. Never disconnect the permanent grounding point of the loop. 5. When working, there must be a special person to supervise, use insulating tools and stand on the insulating mat. (2) Voltage transformer 1. Strictly prevent short circuit or grounding. Insulating tools and gloves should be used. If necessary, stop using relevant protective devices before work. 2. Connect the temporary load, and must be equipped with special circuit breakers and fuses. 3. When the secondary circuit of voltage transformer is charged, in order to prevent the secondary side from charging reversely at the primary side, in addition to disconnecting the secondary circuit, it is necessary to remove the primary safety or disconnect the circuit breaker. 4. At work, there must be someone to supervise, use insulating tools and stand on insulating mats.
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