There are many 10kV high-voltage switchgear, and the application range is wide. If an insulation accident occurs in a 10kV high-voltage switchgear, the damage will be minor and the equipment will be damaged, and the serious will cause a large-scale blackout, causing irreparable losses to the country.

Common defects and causes of high-voltage switchgear:

1. Small air insulation gap

Some high-voltage switchgear manufacturers do not strictly implement the relevant technical standards, and the air insulation gap between the phase and the phase and the phase and the ground of the charged body in some 10kV high-voltage switchgear cabinets is between 100-125mm. And as a pure air-insulated electrical For equipment, the minimum gap of pure air insulation for 10kV system is 125mm.

The minimum air insulation gap between the phase and the phase and the phase and the ground in the 10kV high voltage switchgear cabinet is less than the capacity of 125mm, which causes an accident.

2. Poor insulation performance of matching accessories

In order to reduce costs, some manufacturers use matching accessories with lower insulation levels, which causes the pollution flashover voltage of the switchgear to decrease, which does not meet the rated standard requirements.

3. When using composite insulation, air gaps should be considered

The air gap cannot be ignored when using composite insulation. To ensure safety, the air gap in the air switch cabinet should be greater than 30mm.

4. Poor operating environment and low maintenance quality

Generally speaking, the operating environment of a 10kV high-voltage switchgear is poor. The operating environment of the high-voltage switchgear is often attacked by dust, smoke, steam, etc., which causes the surface of the insulation layer to be corroded and conductive objects are generated, which constitutes insulation defects.

There are individual switchgear users who do not pay attention to the overhaul and maintenance of the equipment, and cannot find and eliminate various insulation defects in time, which will eventually cause accidents.

10kV High Voltage Switchgear Defect Suggestion:

1. The design and manufacturing department of the 10kV high-voltage switchgear should strictly implement the relevant insulation standards and grasp the quality of the high-voltage switchgear.

2. The user of the 10kV high-voltage switchgear must do an AC withstand voltage test before the equipment is put into operation. If the test result does not meet the requirements, it should be resolutely returned. For the 10kV high-voltage switchgear in operation, it should be fully completed Maintenance and overhaul work, and improve the operating environment as much as possible.