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three phase to single phase transformers w/o source imbalance

Thread starter ciadoer
Start date Apr 23, 2003

Status: Not open for further replies.

Apr 23, 2003

ciadoer

Electrical

Our customer is providing single sourced 480V 3 phase power for a new machine we will be installing. I need to drive 5 motors on the 3 phase side (drawing a total of 6 amps, max) and two linear motors along with a service outlet, 24VDC supply, PLC, and alarms (drawing a total of 18 amps, max)on a single phase side. The transformer manufacturer agrees that I can connect a single phase transformer to a three phase source, but cautions against creating an unbalanced load on the source. How do I determine if the single side load is causing too great of an imbalance on the 3 phase source?

ciadoer