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respect to the forward rotating rotor. As a result, the backward field induces an
electromagnetic field and current in the stator winding. This can be seen as the lower
sideband of slip frequency. The Upper side band is created by torque pulsation at twice slip
frequency due to current variations in the stator windings caused by the lower sideband.
Side
bands
A healthy motor under full
load (Power freq. 50Hz)
A faulty motor under full load
(Current =100A, Power
freq.=50Hz, Speed=1380
RPM, with sidebands at ±8
Hz)
In the
Shorten Turns
view sidebands created by insulation failure in the stator windings will be
prominent, at a frequency dependant of the air gap and axial flux variation this is also effected by
load and speed.
Содержание VIBER X5 MKIII
Страница 1: ...VIBER X5 MKIII...
Страница 2: ...Instrument Manual...
Страница 13: ...13 Cable Connector solder view...
Страница 14: ...14 Auto Detection Transducer Connections...
Страница 121: ...VMI International AB E mail info vmiab com www vmiab com...