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AC drive giving unbalance voltage output
  | Posted by self  on 24 August, 2012 - 12:21 am |
we have a ac reliance drive of 15kw which gives unbalance output in one phase (R 170, Y 300, B 300). when motor is isolated from the circuit, then also it give unbalance voltage. what may be the reason for that unbalance voltage.?
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Self… the values you cited indicate very severe unbalance!
Based on both NEMA and IEC Standards, the VUF (Voltage Unbalance Factor) is about 32%.
Since the values are the same whether or not the motor is connected then the Reliance drive is suspect!
Regards, Phil Corso (cepsicon@aol.com)
Based on both NEMA and IEC Standards, the VUF (Voltage Unbalance Factor) is about 32%.
Since the values are the same whether or not the motor is connected then the Reliance drive is suspect!
Regards, Phil Corso (cepsicon@aol.com)
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