Consider Figure 3.10 of the text. The per-unit leakage reactance of transformer (T_{1}), given as 0.1 p.u.,
Question:
Consider Figure 3.10 of the text. The per-unit leakage reactance of transformer \(T_{1}\), given as 0.1 p.u., is based on the name plate ratings of transformer \(T_{1}\).
(a) True
(b) False
Figure 3.10
Transcribed Image Text:
V, 220/0 volts Zone 1 Vspu 0.9167/0 p.u. = Zbase 38 T 30 kVA 240/480 volts Xeq = 0.10 p.u. Zone 1 Voaset 240 volts (240) 30,000 Spase = Ispu XT1p.u. = 1.92 30 KVA Zone 2 Xin = 21 (a) Single-phase circuit jXlinep.u. 10.10 p.u. 10.2604 p.u. Zbase2 Zone 2 Vbase2= 480 volts T 20 kVA 460/115 volts Xea = 0.10 p.u. = (480) 30,000 = 7.68 (b) Per-unit circuit Zload 0.9 + 10.2 jXT2p.u. hoadp.u. /0.1378 p.u. = Zbase3 Zone 3 base3 = Zone 3 Vbase3= 120 volts Zloadp.u. 1.875 +/0.4167 p.u. (120) 30,000 30,000 120 0.48 250 A
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Related Book For
Power System Analysis And Design
ISBN: 9781305632134
6th Edition
Authors: J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
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