IEC Transformer Protection
IEC Transformer Protection
(OP)
NEC is very clear about the selection of transformer over current protection. However I am unable to find some guideline for selection of transformer protection in IEC.
I have a 75kVA isolating transformer (400V primary, 400V secondary). In IEC world, can I use 125A breaker on both primary and secondary, or should it be 160A? Thanks for help!
I have a 75kVA isolating transformer (400V primary, 400V secondary). In IEC world, can I use 125A breaker on both primary and secondary, or should it be 160A? Thanks for help!





