RFAII Rotor interturn short circuit magnetic flux detection

Through pre-installed on the air gap magnetic flux sensor, detection of motor rotor turning when the probe of magnetic flux leakage, to determine the rotor bar insulation condition. Rotor interturn short circuit mainly is short circuit slot leakage magnetic flux decreases, with short circuit fault of rotor will have higher electrical losses or local thermal and mechanical vibration, serious can cause electrode short circuit leads to downtime.

The traditional magnetic flux testing method (magnetic flux waveforms judgment)

When need to pass through zero at the main flux curve can be accurately measure

Many times need generator under different output load measurement

Or under short circuit conditions can accurately catch the wave type of leakage magnetic field, complex operation, time-consuming,

Big subjectivity