ECN Forum Forums General Topics of the Trade General Discussion Area 240 Grounded B phase distribution

IT and communications. Often the switchboards and generators are 480V delta with local power supplies providing 208/120Y to the electronics. This creates some problems, as TVSSs and UPSs don't work properly on floating delta, and can malfunction if the delta drifts too far from center.

[This message has been edited by SteveFehr (edited 11-12-2006).]