Excitation Current
Excitation Current
(OP)
What is the Excitation current testing criterion of acceptance for a Step-up 13.8 kV to 115 kV transformer 45MVA.
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RE: Excitation Current
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RE: Excitation Current
RE: Excitation Current
RE: Excitation Current
Pattern of two higher and similar currents and one lower is typical for 3 phase units.
There is an alternate test connection used on DELTA connections that will yield two lower similar and one higher result.
Similar readings are usually within 5% of each other and the lower current is usally 65% - 95% of the higher value.
Always refer to the manufacturer data first if available.