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Dongli Electric

Precautions in Maintenance of High and Low Voltage Switchgear


Release time:

2020-09-09

If the operating environment of high and low voltage switchgear is poor, it will affect the efficient operation of the entire switchgear, thus reducing the conductivity of the metal, increasing the resistance of the bus bar of the entire switchgear, and severely oxidizing the surface of the bus bar. If the temperature is too high, it will also reduce the service life and insulation performance of the components inside the switchgear, and ultimately affect the insulation performance of the high voltage switchgear.

High and low voltage switchgearMatters needing attention in maintenance

Always ensure that the switchgear is in a good operating environment.

If the operating environment is poor, it will affect the efficient operation of the entire switch cabinet, thereby reducing the conductivity of the metal, increasing the resistance of the bus bar of the entire switch cabinet, and severely oxidizing the surface of the bus bar. If the temperature is too high, it will also reduce the service life and insulation performance of the components inside the switch cabinet, and ultimately affect the insulation performance of the high-voltage switch cabinet.

If the temperature is too low, it will cause the internal stress of the switch cabinet to be large, which will affect its insulation performance, especially in high altitude areas, the insulation treatment should be strengthened to prevent the external insulation from being broken down. This needs to improve the air insulation distance, and in the maintenance of the switch cabinet to ensure that the operating environment of the inspection, to ensure that the safety hazards are found and eliminated in a timely manner.

2. When carrying out daily maintenance, operation and maintenance personnel must be aware of the necessity of strengthening their inspection and maintenance. And take effective measures as far as possible to avoid its deterioration.

DeteriorationHigh and low voltage switchgearWhen carrying out overhaul and maintenance, we must attach great importance to it. In addition to its operating environment and its own factors, especially after the operation time is prolonged, it will lead to the deterioration of the switch cabinet, thus affecting its normal and efficient operation. Therefore, we should strengthen the moisture and dust prevention work in the high and low voltage complete set of switchgear, prevent small animals from entering the cabinet, and strengthen the rust prevention treatment for the metal conductors inside, when painting antirust paint, clean the dirt, especially the moving parts, strengthen the lubrication inspection, check whether the screws and nuts are loose and fall off, and check the state of various components in the high and low voltage switchgear, check whether there is any abnormality, especially check whether there is condensation inside.

3, should be preventedHigh and low voltage switchgearInsulation accident.

Since insulation accidents often occur during operation, mainly due to the insufficient air gap and insulation distance of the switch cabinet, coupled with its poor operating environment, which will affect its operation, especially lead to insulation accidents, so operation and maintenance personnel must strictly follow the relevant requirements and standards, earnestly pay attention to the over-voltage protection of the switch cabinet, and prevent the insulation layer from being broken down due to misoperation, secondly, preventive maintenance and testing of switchgear should be strengthened regularly to ensure that it is in the best operating state. Finally, it is necessary to ensure that its air gap and safe insulation distance meet the standards, and strengthen insulation verification. Construction should be carried out in combination with the technical drawings of the manufacturer. Before putting into operation, the overhaul and maintenance should be strengthened, and various hidden troubles should be eliminated as much as possible to ensure its safe and efficient operation.