What Is The Main Function Of Electrical Fittings?

In overhead power lines and distribution equipment, power fittings are mainly used to support, fix and connect bare wires, conductors and insulators in strings, and also to protect wires and insulators. So how many categories can the power fittings currently used be divided into in terms of performance and purpose?

1. Pole mounted fuse switch, also known as support fittings or suspension clamps. This kind of fittings is mainly used to suspend wire insulator strings (mostly used for straight pole towers) and suspend jumpers on insulator strings.

2. Anchor fittings, also known as fastening fittings or wire-resistant wire clamps. This kind of fittings is mainly used to fasten the terminal of the wire to fix it on the wire-resistant insulator string, and is also used to fix the terminal of the lightning conductor and anchor the wire. The anchor fittings bear all the tension of the wire and lightning conductor, and some anchor fittings become conductors

3. Connection fittings, also known as hanging wire parts. This kind of fittings is used to connect insulators in strings and connect fittings to fittings. It bears mechanical loads.

4. Connection fittings. This kind of hardware is specially used to connect various bare wires and lightning conductors. The connection bears the same electrical load as the wire, and most of the connection hardware bears the entire tension of the wire or lightning conductor.

5. Protective hardware. This kind of hardware is used to protect wires, insulators, etc., such as equalizing rings for protecting insulators, heavy hammers for preventing insulator strings from being pulled up, and anti-vibration hammers and protective wires for preventing wire vibration.

6. Contact hardware. This kind of hardware is used to connect hard busbars, soft busbars and outlet terminals of electrical equipment, T-connections of wires and non-load-bearing parallel connections, etc. These connections are electrical contacts. Therefore, the contact hardware requires higher conductivity and contact stability.

7. Fixed hardware, also known as power plant hardware or high-current busbar hardware. This kind of hardware is used to fix and connect various hard busbars or soft busbars and support insulators in distribution equipment. Most of the fixed hardware is not used as a conductor, but only serves to fix, support and suspend. However, since these hardware are used for large currents, all components should be free of hysteresis loss.