Purpose of Earth Bus Bar within VMS Cabinet
As a standard practice - in each VMS (Vibration Monitoring System) Cabinet (Panel) - we provide 2 Numbers of Earth Bus Bars - 1 on each side of the Panel. 1 Earth Bus Bar is kept Isolated and the other Earth Bus Bar is kept Non-Isolated.
The purpose of the Non-Isolated Earth Bus Bar is to provide an Earth Path to Electrical connections within the Cabinet. Typically the IRD8800 Card, IRD8800 Rack and whole Panel Body has continuity with this Earth Bus Bar and this Earth Bus Bar has continuity with the Panel Earth Bolt on the outer side of the panel.
The purpose of the Isolated Earth Bus Bar is to provide an Earth Path to Electronic Connections within the Cabinet. As the name suggests - this Earth Bus Bar is Isolated from the Panel body and thus external earth connections need to be made using Gland Plate for access. Typically customers terminate this Isolated Earth Bus Bar with their Electronic Earth.