# Solution: Determine the efficiency of the transformer at half load, 0.80 pf

(Last Updated On: January 29, 2024)

#### Problem Statement: Electrical Engineering Professional Subjects

Electrical Machines: Transformers Problem Solving

A 60 kVA, 2300/230 volt, 60-cycle transformer is tested in the laboratory so that its characteristics maybe determined. The standard test requires an open circuit test and short circuit test.

Open circuit test I = 6.5 A E = 230 V P = 190 W

Short circuit test I = 21.7 A E = 115 V P = 600 W

Determine the efficiency of the transformer at half load, 0.80 pf

The efficiency of the transformer at half load, 0.80 pf is equal to 98.6%.

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