Thanks mm
I am now very confused, let me explain
A Eurotherm engineer came into our plant this moprning to size up a AC drive/motor replacement for a 22kw Kopp variator and motor (mechanical speed control). The supply to the existing motor is sized at 100amp/3 phase. I asked what was the largest...
This will be a bit basic to some I know, but here goes.
Using ohms law in calculating single phase, I would do the following:
I=P/V
eg = I=2000/240 = 8.3 amps,
However in three phase do you do the same ie.
I=P/V
eg I = 5000/415 = 12 amps
When sizing a circuit breaker for the last calc would...