At the bottom of the power fittings is a spherical arc striking ball. When a lightning strike occurs, the electric power fittings discharge between the arc ball and the grounding plate, so that the continuous power frequency arc moves to the arc ball metal ball and burns. Thus, power fittings play a protective role.
There are strict regulations on the production process of power fittings. The design technology and manufacturing should be rationalized in accordance with national standards. The production process not only needs to have a smooth surface without cracks and other defects. Summarize several aspects to pay attention to:
1. Power fittings should bear the mechanical loads that may occur during installation, maintenance, and operation, and can meet the requirements of various working conditions such as design working current, working temperature and environment.
2. The connecting parts of the fittings should be ensured not to be loose during operation, and the fittings related to the live line maintenance should be safe and easy to disassemble. The fittings should minimize the loss of tape and eddy current. The fittings themselves should have anti-corona characteristics. When producing fittings, the influence of corona should be limited as much as possible and used for the rated voltage.
3. For power fittings production equipment, daily maintenance and maintenance should be done, and customized inspections of power fittings production equipment failures. If there is a need to send it to a third party for inspection, it needs to be shut down regularly.
