A 10 mva 13.8 kv alternator has positive, negative and zero sequence reactance of 30%, 40% and 5% respectively. The neutral reactance is 5%
Find a) calculate the base impedence if base power is 10 mva and base kv is 13.8
B)compute the value of fault current if LG fault occurs at phase a with zero fault impedence
C)compute the negative sequence voltage for LG fault
D) compute the value of positive sequence of current ia1 if LG fault occurs
E) compute the value of negative sequence of current ia2 for LG fault