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Motor Warranty and Voltage Unbalance Issues by rt1973 is a document available to read on EtoBox.

The document discusses differences between motor manufacturer warranty requirements and NEMA standards regarding voltage unbalance, with some manufacturers requiring less than 5% current unbalance for warranty compared to NEMA stating 1% voltage unbalance can cause 6-10% current unbalance. This causes confusion between utilities, manufacturers, and end-users, so thorough assessments of each location

Author
rt1973
Language
EN