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In a 50 KVA, 1100/220 V transformer, the iron and copper losses at full load are 350 W and 425 W respectively.
written 7.8 years ago by gravatar for teamques10 teamques10 ★ 65k •   modified 4.1 years ago

In a 50 KVA, 1100/220 V transformer, the iron and copper losses at full load are 350 W and 425 W respectively. Calculate - 1. Full load with unity power factor - 2. Half load with unity power factor - 3. Full load with 0.8 pf lagging -
basic electrical engineering
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written 7.8 years ago by gravatar for teamques10 teamques10 ★ 65k

Given:

KVA = 50

V1= 1100V

V2= 220 V

P1= 350 W

Pw (FL) = 425W

Efficiency of full load and cos ф= 1

ƪ Ƞ FL= [KVA * 103 * cos ф/ (KVA * 103 * cosф) + P1 +Pw (FL)] * 100

= [50 * 1031 / …

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