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Verified answer
Diket :Motor 3 fase
P = 5 Kw = 5000 w
V = 380 v
ef = 85%
factor kerja = 0,8
Dit : Arus nominal.......?
Jwb:
I =( P / ( V . akar 3 . faktor kerja ) . ef
I = ( 5000 / ( 380 . 1,732 . 0,8 ) . 85%
I = ( 5000 / 526,528 ) . 0,85
I = 9,496 . 0,85
I = 8 A
Jadi arus nominal motor tsb adalah sebesar 8 A