Workshop Case Studies

Shaft Voltage Measurement

MOTOR; 460kW LEROY SOMER PERMANENT MAGNET COMPRESSOR MOTOR. 400V, 3600rpm.  Initially overhauled in May 2017, when 2 x Insulated Bearings were replaced, Excessive Bearing Failure was once again detected in November 2017. It was agreed to complete a Shaft Voltage Test, as the motor is powered by VSD, Shaft Voltage […]