How many square copper cables does it take to start a 60 kW motor with frequency conversion?

I = P(√3××cosφ)

60( 1.732 X 380 X 0.8)？ = 1 14

I= 1 14A

According to the electrician's line selection: aluminum core 100 to 2, that is, when 100 current is applied, there are two currents per square. 1 14/3 =38 There are 103 copper wires.

According to the power formula P= 1.732UIcosφ has:

I=P/( 1.732Ucosφ)

= 30/( 1.732 x 0.38 x 0.85)& amp； #8205; & amp#8205;

=54A (calculated by three-phase commercial power, power factor is 0.85).