The reasons of shaft current motor
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The asymmetric magnetic field;
Harmonic power supply current;
Manufacturing, installation is not good, because the rotor eccentricity caused by uneven air gap;
Two semicircle removable stator core has a gap;
A stator core stack of fan-shaped patch number selection is not appropriate.
Harm.
The motor bearing surface or ball erode, form dot microporous, worsen the running performance of bearing, friction loss and heat increased, resulting in bearing burned.
Prevention.
Eliminating the pulsating flux and power harmonics (such as at the inverter side AC reactor);
Design of motor, the bearing seat and a base for sliding bearing insulation insulation, cover the outer ring of the rolling bearing and the end.
234407BM 234706BM 234406BM 517/2860V/YA 5610/2500 517/1720X1V 527/1181M 510/1180M 517/930 510/670 590/560 510/500 52780 59080 517/368M 51760U 517/238 6207-2ZN 6206-2ZN 6205-2ZN 6204-2ZN 6203-RZ 6203-2ZN 6202N 6202-2ZN 6201-2ZN 6200ZZ 6200-2ZN 62/32-ZN 62/32-Z 62/32N 62/32-2Z 62/32-2RZ 62/32-2RS 62/28-2RZ 62/22-2RZ 61996 61992 61988 61984
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Cause of the shaft current:The asymmetric magnetic field;
Harmonic power supply current;
Manufacturing, installation is not good, because the rotor eccentricity caused by uneven air gap;
Two semicircle removable stator core has a gap;
A stator core stack of fan-shaped patch number selection is not appropriate.
Harm.
The motor bearing surface or ball erode, form dot microporous, worsen the running performance of bearing, friction loss and heat increased, resulting in bearing burned.
Prevention.
Eliminating the pulsating flux and power harmonics (such as at the inverter side AC reactor);
Design of motor, the bearing seat and a base for sliding bearing insulation insulation, cover the outer ring of the rolling bearing and the end.
