Engineering Board Exam Reviewer · Three-Phase Systems in Power Applications · medium
A balanced delta-connected load, with Z=12+j9, in each phase, is supplied from a three-phase line of 208 V (line-to-line, rms). Find the current in each load impedance (the phase current).
- 24 A
- 8.01 A
- 27.7 A
- 13.9 A
Answer
D. 13.9 A
Solution
In a delta connection each phase impedance sees the full line voltage: Iph=VL/|Z|= 208 V15, =13.9 A.
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