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Station service transformer inside the differntial zone

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Mbrooke

Electrical
Nov 12, 2012
2,546
How badly does having the station service transformer inside a differential zone effect the protection of a power transformer? (ie 100kva on a 40/50/60MVA secondary) Is detection of turn-to-turn faults still possible?
 
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The secondary SC on 100 kVA aux transformer may not impact the differential on 40 MVA unit.
 
Good to know. Would it be any better if moved to a bus zone (as usually done) or should I just keep it as planned?
 
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