Channel busbars are constructed by welding two channel-shaped aluminum conductors into a rectangular, barrel-like structure. These are primarily used for connections between generator leads and step-up transformers, as well as between generators and voltage distribution devices.

Description of Channel Busbar Fixed Fittings

In power plants and substations, the fittings that secure channel busbars to support insulators are referred to as channel busbar fixed fittings.

Construction: 

Base Plate: Made from steel.

Long Bolts: Used to secure the assembly.

Cover Plate: Constructed from cast aluminum alloy.

Materials: 

The base plate and fastening pads are made from carbon structural steel with a tensile strength of no less than 375 N/mm².

The hanging brackets are made from ductile cast iron with a grade of no less than KTH 330-08.

Installation Requirements

To maintain the shape and dimensions of the channel busbars:

Each channel busbar segment between support insulators or hanging assemblies must have MCW-type spacers installed.

The number and distance of the spacers should comply with the design specifications provided in the relevant engineering documentation.

If channel busbars are connected using welded aluminum plates, spacers are not required between the two channel busbars.

This configuration ensures the integrity and performance of the busbar system in various operational environments.