For line mechanics, cluster bars, also known as groundingElectrical grounding, also known as earthing, is a safety me... More clusters, are used to facilitate the safe application of multiple groundingElectrical grounding, also known as earthing, is a safety me... More assemblies on a three-phase system, ensuring a secure and efficient groundingElectrical grounding, also known as earthing, is a safety me... More process.
A cluster bar typically consists of a series of groundingElectrical grounding, also known as earthing, is a safety me... More clamps or assemblies that are connected to a central groundingElectrical grounding, also known as earthing, is a safety me... More bar. This allows the worker to connect multiple groundingElectrical grounding, also known as earthing, is a safety me... More assemblies to the cluster bar, which is then connected to the pole or structure.
When working on a pole, the cluster bar should be installed below the line worker’s feet to ensure that the worker is within the Equi-Potential Zone (EPZ) during de-energized and grounded line maintenance. This helps to reduce the current flow through the worker’s body in the event of a fault currentFault current is the abnormal, high current flow through an... More.
They work by reducing the length of cable between the overhead line and the earth. A reduced length means that the resistance of the line between the overhead line to the connection to the earth is much less than if it was one long cable extending from the overhead line to the ground.
Distribution Cluster Bar
Transmission Line Cluster Bar
