Value of fault current, if neutral grounding is absent in LLG fault

Q.  What is the value of fault current If, if the neutral grounding is absent in LLG fault?
- Published on 19 Oct 15

a. If = - 3 Ia1 ( Z2 / Z2 + Z1)
b. If = 0
c. If = √3 * (Ea / Z1 + Z2 + Z0)
d. If = 3 * (Ea / Z1 + Z2 + Z0)

ANSWER: If = 0

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