Consider a transformer rated 15 kVA, single-phase, 480/120 V supplying 9.6- load as shown in the following
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Consider a transformer rated 15 kVA, single-phase, 480/120 V supplying 9.6-Ω load as shown in the following figure (top). In calculations specific to a given transformer, it is customary to take the rated voltage on two sides as their respective base voltage and the rated kilovolt-ampere as the base kilovolt-ampere (which remains the same on both sides). Then, on the secondary (suffix 2) and primary (suffix 1) sides, we have:
Transcribed Image Text:
12base = 15 KVA x 1000 ÷ 120 V = 125 A and Z2base = 120 V ÷ 125 A = 0.96 0 /1base = 15 KVA x 1000 ÷ 480 V = 31.25 A and Z1base = 480 V ÷ 31.25 A = 15.36 02.
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By the way we note that 480 120 2 096 1536 which means that the base ohms get transformed by the vol...View the full answer
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Related Book For
Introduction To Electrical Power And Power Electronics
ISBN: 9781466556607
1st Edition
Authors: Mukund R. Patel
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