Hello everyone;
we have a 37kw 380v 1480 rpm/min ATB three phase motor drive an air cooler fan through a VFD converter the motor is V6 Mounting type and have a radial coupling with pulley and belt to the fan, we have bought a new motor HEMLKE DOR225S-04-1G to replace the old ATB one, with...
dear all
i made a test of instrument earth impedance and i found it 4.6 ohm. i need to know if this is acceptable value or not and the electtrical standards related to that
thanks in advance