Current rating of Transformer / Generator (I)
KVA X 1.4
Impedence of Transformer (Z)
5 %
Short circuit rating of Transformer
Current Rating / % Impedence = I / Z
No Load Current of Transformer
< 2 % of rated current of Transformer
Impedence of Generator
15 %
Short circuit rating of Generator
Current Rating / % Impedence = I / Z
Full load current ( FLC ) of 3 Phase Motor
HP X 1.5
No load current of 3 Phase Motor
30% of FLC
Full load current of Single Phase Motor
HP X 6
KW rating of Motor
HP X 0.75
OLR selection
DOL STARTER :- FLC X 1
STAR & DELTA STARTER :- FLC X 0.6
Fuse Rating for Motor protection
DOL :- FLC X 2
STAR & DELTA :- FLC X 1.5
SLIP RING MOTOR :- FLC X 1.25
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