Find the per-unit equivalent circuit for this transformer

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Reference no: EM13967317

A 20-kVA 20,000/480-V 60-Hz distribution transformer is tested with the following results:

Open circuit test Short circuit test

(Measured by secondary side) (Measured by primary side)

VOC = 480 V VSC = 1130 V
IOC = 1.51 A ISC = 1.00 A
VOC = 271 W PSC = 260 W

(a) Find the per-unit equivalent circuit for this transformer at 60 Hz.

(b) What would the rating of this transformer be if it were operated on a 50-Hz power system?

Reference no: EM13967317

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