Power Fittings Classification

1. According to the function and structure, it can be divided into categories such as suspension wire clamps, tension wire clamps, UT wire clamps, connection hardware, connection hardware, protection hardware, equipment wire clamps, T-type wire clamps, busbar hardware, and wire pulling hardware; according to the purpose, it can be used as line hardware and substation hardware.
2. According to the power hardware product unit, it can be divided into forgeable cast iron, forging, aluminum copper aluminum, and cast iron, a total of four units.
3. It can also be divided into national standards and non-national standards
4. According to the main performance and use of hardware, hardware can be roughly divided into the following categories
1) Suspension hardware, also known as support hardware or suspension wire clamp. This hardware is mainly used to suspend the wire insulator string (mostly used for straight pole towers) and suspend jumpers on insulator strings.
2) Distribution box, also known as fastening hardware or wire-resistant wire clamp. This hardware 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 arrester and anchor the wire. The anchoring hardware bears all the tension of the conductor and lightning conductor. Some anchoring hardware becomes a conductor.
3) Connecting hardware, also known as hanging wire parts. This hardware is used to connect insulators into strings and connect hardware to hardware. It bears mechanical load.
4) Connecting hardware. This 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 connecting hardware bears all the tension of the wire or lightning conductor.
5) Protective hardware. This 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 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 to support insulators in power distribution equipment. Most of the hardware is not used as a conductor, but only for fixing, supporting and suspending. However, since these hardware are used for large currents, all components should be free of hysteresis loss.