protection of Control-transformer
protection of Control-transformer
(OP)
A Motor Control Center has been dimensioned for 460V ,630A,25kA. A feeder of 25kA-MCCB supply a 6.23kVA-7.82A motor –pump, with a 2-phase derivation for a control-transformer 480/120V-70VA for control circuit of motor-pump.
Control Transformer is protected by 460V-10kA-MCCB .
Question is:- Should MCCB control transformer dimensioned for [b]25kA[b] instead of [b]10kA[b]?.
Is there any recommendation?
Control Transformer is protected by 460V-10kA-MCCB .
Question is:- Should MCCB control transformer dimensioned for [b]25kA[b] instead of [b]10kA[b]?.
Is there any recommendation?






RE: protection of Control-transformer
"Theory is when you know all and nothing works. Practice is when all works and nobody knows why. In this case we have put together theory and practice: nothing works... and nobody knows why! (Albert Einstein)
RE: protection of Control-transformer
Keith Cress
kcress - http://www.flaminsystems.com
RE: protection of Control-transformer
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Keith Cress
kcress - http://www.flaminsystems.com
RE: protection of Control-transformer