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Friday, 11 July 2014

How to calculate Ampere and voltage

How to calculate Ampere and voltage


1. single phase voltage


V = P / I

Example:

P = 115
I = 5

V = 1150P / 5I

V = 230V

2 . Three phase voltage


V = P / 3 ×  PF ×  A

Example:

P = 2875
I = 5
P>F= 0.8

V =2875.12 P / 3 ×0.8 PF ×5 A

V = 2875.12 / 6.928

V = 415V

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