What Are The Environmental Requirements For Electrical Fittings When In Use?

Power fittings are used to connect and combine various devices in the power system. They can be used as metal accessories to transmit mechanical loads, electrical loads and some protective functions. According to their functions and structures, they can be divided into Power Connectors, tension clamps, connecting fittings, connection fittings, protective fittings, equipment clamps, T-type clamps, busbar fittings, and wire pulling fittings. Connecting fittings are mainly used in overhead power lines or substations to connect conductors, lightning arrester clamps to insulators or insulators, lightning arrester clamps to pole towers. According to different installation conditions, special connecting fittings refer to ball head hanging rings and bowl head hanging plates connected to insulators. Next, let's take a look at its requirements for the environment.

1. The altitude shall not exceed one thousand meters.

2. Temperature requirements, the ambient temperature shall not be lower than minus 30 degrees Celsius, nor higher than 40 degrees Celsius. At the same time, we can also find that the temperature in high altitude areas cannot meet the requirements. Power fittings are electrical equipment.

3. There should be no conductive gas or gas that can cause chemical reaction of power fittings around the use environment, and it cannot be used in a steam environment.

4. A large amount of dust will also have a great impact on the safety of the use of power fittings.

5. Flammable and explosive occasions will also pose a great threat to the safety of the use of power fittings.

6. Places with violent collisions or impacts. Power fittings are metal accessories that connect and combine various devices in the power system and play a protective role. In the review and acceptance organized by the State Grid Corporation and the Ministry of Science and Technology, the experts of the acceptance committee unanimously agreed that the development of UHV fittings has filled the gap in domestic UHV fittings, and the research results have reached the international advanced level. The sample design of power fittings is reasonable and the performance is excellent, which can meet the construction needs of UHV AC transmission line projects.

During the manufacturing process, power fittings should be free of burrs, flash, sand holes, bubbles, cracks and deformations, the surface should be smooth, and the galvanized layer should be uniform. The matching hardware should be of suitable specifications, without missing parts or rust. The screws and nuts should fit well. The contact surface between the wire clamp hull pressure plate and the wire should be smooth. The manufacturing quality and size should comply with national standards and specifications.