Problem 4

In a three-phase generator, a line-to-line fault occurs between phases A and B. What is the sum of the short circuit currents through all three phases (A, B, and C)? Assume that there is no neutral, and the impedances of the positive, negative, and zero sequences are equal to 0.01 pu.
(A) 0 pu
(B) 87 pu
(C) 50 pu
(D) 100 pu

Wasim Asghar – P.E, P.ENG, M.ENG

Licensed Professional Engineer in Texas (PE), Florida (PE) and Ontario (P. Eng) with consulting experience in design, commissioning and plant engineering for clients in Energy, Mining and Infrastructure.