In the process of using the high voltage load switch , it will inevitably encounter various faults. Among them, the insulation damage can be said to be a kind of failure that most people have encountered. So why is this situation of such insulation damage occurring? The following are the causes of damage of the high-voltage load switch summarized by the editor based on experience.
The causes of insulation damage to high-voltage load switches are as follows:
1. The supporting porcelain bottle is covered with dust and dirt, which reduces the insulation performance. Outdoor switches, due to the effects of atmospheric conditions, insulation damage is more serious. Secondly, due to unreasonable installation, the porcelain bottle is easily damaged due to excessive mechanical load.
2. The insulation of insulation rods is reduced. There are many insulating rods in oil switches and load switches. On the one hand, they must transmit mechanical force and on the other hand, they can withstand high voltage. Due to the limitation of the internal space position of the switch, the insulation distance is very short. Therefore, the dust and carbon particles accumulated on the rod, It greatly reduces its insulation level. During maintenance, the insulating rods should be cleaned with qualified insulating oil and wiped with a clean cloth.
3. The quality of insulating oil is reduced.
The quality of transformer oil used as insulation in switches is reduced, such as the influence of moisture intrusion or carbon particles caused by arcs. Therefore, if the oil switch trips 3 times in a short circuit, it should be shut down for maintenance, and the insulating oil should be treated until the withstand voltage is qualified.