Power facility accessories have a wide range of uses and are a key element in ensuring the stable, safe, and efficient operation of the power system. Different types of accessories have their own unique uses:

1. Connection accessories

     Wire and cable connectors: used to connect wires and cables of different specifications and models, ensuring smooth transmission of current and maintaining the continuity of power lines. Like common copper and aluminum terminal blocks, when connecting wires to distribution boxes or cabinets at the end of power transmission, or when splicing different cables, connect the conductors to reduce contact resistance, prevent heating and ignition caused by poor connection, and ensure electrical safety.

     Insulator: Installed between power poles, iron towers, and wires, it plays a dual role of insulation and support. Ceramic, glass or composite insulators, on the one hand, isolate wires and towers to prevent current leakage to the ground, and on the other hand, carry the weight of wires, cope with external environmental forces such as wind, rain, ice and snow, so that overhead lines can be stably arranged in the air, ensuring the safe distance of transmission lines.

2. Fixed accessories

      Electric power fittings: There are various types with different uses. For example, wire clamps are used to clamp and secure wires, ensuring reliable connections between wires, insulators, and towers; The clamp tightly holds onto the tower, providing installation positions for insulators, crossarms, and other accessories, allowing the power facilities to be assembled in an orderly and stable manner on the tower, resisting the impact of harsh weather conditions such as strong winds and icing, and maintaining the stability of the transmission line structure.

      Bolts and nuts: Despite their small size, they are the key "screws" that firmly fix various components of electrical equipment. Whether it is the splicing of internal components of transformers and switchgear, or the assembly of various parts of outdoor iron towers and poles, tightening bolts and nuts of appropriate specifications makes the entire power facility structure compact and stable, preventing component loosening and displacement from causing faults.

3. Protective accessories

     Lightning arrester: When lightning strikes a transmission line, it will instantly generate ultra-high voltage. Lightning arrester can quickly introduce lightning into the ground, avoid lightning overvoltage impact on power equipment, protect expensive and critical equipment such as transformers, generators, and switchgear from lightning damage, and maintain the normal operation of the power system.

     Fuse: In the event of overload, short circuit or other faults in the circuit, when the current rapidly increases, the fuse of the fuse melts, cutting off the circuit in a timely manner to prevent destructive damage to wires and electrical equipment caused by excessive current. The scope of the fault is controlled to a small extent, ensuring normal power supply to other areas.

4. Control accessories

     Isolation switch: mainly used to isolate power supply, disconnect the circuit during equipment maintenance and repair, form a visible disconnection point, ensure the safety of maintenance personnel, and avoid electric shock caused by misoperation; Easy and flexible operation, providing convenience for power system switching and equipment switching.

     Circuit breaker: It is a key device in the power system that automatically cuts off fault currents. When there are abnormalities such as overload, short circuit, undervoltage, etc. in the circuit, the circuit breaker quickly trips, cutting off the circuit. Some intelligent circuit breakers can also provide feedback on fault information, helping operation and maintenance personnel quickly locate and repair problems.