Precautions and experience in electrical equipment inspection?

During the inspection, we must be focused, conscientious and responsible, and check the condition of the equipment with our eyes, ears, and hands according to the situation, and analyze and judge the operation of the equipment based on color, smell, sound, temperature, vibration, oil level, and hand touch. If any abnormalities, defects, or hidden dangers are found during the inspection, they should be reported to superiors in a timely manner and dealt with promptly according to the situation.

Inspection of electrical equipment can follow the following principles: look: Observe whether the operation of the equipment is different from normal conditions, and record relevant data such as temperature, pressure, number of actions, leakage current, etc. listen: Check whether the sound of the equipment is normal during operation, whether there are abnormal sounds, whether there are abnormal corona sounds, discharge sounds, etc. test: Use an infrared thermometer to test whether the temperature of the equipment connector is abnormal and whether it exceeds the normal temperature. A temperature difference between phases within 20°C is a normal value, a temperature difference between 20°C and 40°C is a serious defect, and a temperature difference above 40°C is a critical defect (infrared temperature measurement should be carried out once a week). touch: Touch the equipment shell, such as the transformer shell, with your hands to check whether the temperature is normal and whether there is any obvious difference compared with usual. smell: Smell the air near the equipment to see if it is normal and whether there are any abnormal smells such as burnt smell or transformer oil smell. In addition, individual equipment has its own operating requirements, and the inspection content is quite extensive. You can find relevant books to summarize it.

Seeing, hearing, touching, communicating

The focus of inspection on different equipment is different. The methods are nothing more than seeing, hearing, touching and smelling. Pay more attention to defective equipment when changing its operating mode. In rainy and humid weather, the porcelain bottles of outdoor transformers are prone to flashing. ； Switches that are used for a long time are prone to heat ； In high temperature seasons or equipment with large vibrations, the joints are prone to heat, etc. It would be best if you could tell me what equipment is being inspected.

The rule of thumb is to set inspection standards based on all your equipment, and conduct regular inspections according to the inspection standards.

Develop inspection standards based on all your equipment:victory::handshake