Search results for query: *

The secondary is Low Resistance Grounded at 200A, I suspected the electrical contractor connected the wrong phasing on the primary side.

we powered up a 12.47kv/4.16kv, three phase, delta-wye XFMR and the follwing readings were taken: A to B 4160 A to C 4160 B to C 4160 A to A 5kV B to B 2.5KV C to C 2.5KV A to Gnd 2.4kV B to Gnd 2.4kV C to Gnd 2.4kV what seem to be the problem? we've the doble and TTR testing before...

unshielded cable above 2000V is no longer allowed per NEC 2005, article 310.6.

yes, 4P breaker is required per IEC 60364-1 and SquareD tech. paper http://www.schneider-electric.com/cahier_technique/en/pdf/ect172p.pdf