Three-Phase Asynchronous Motor; Power Supply To Motor - Electrolux EWM3500 Service Manual

9.9

Three-phase asynchronous motor

11. Tachometric generator
20. PCB
23. Inverter
24. Motor
X-Y-X = Motor windings
9.9.1

Power supply to motor

Three-phase power is fed by the inverter (4) which sends, through the connectors 5-6-7, the three phases to
connectors 1-2-3 on the motor (nodes V-W-U), where the windings (Y-X-Z-) are connected. The phase shift
between the phases is 120° and peak amplitude is 310V.
The condition of the motor can be determined by
measuring the resistance of the windings:
∼
Winding y ohm 5,4 ±7% (contacts 2-3)
∼
Winding x ohm 5,4 ±7% (contacts 1-2)
∼
Winding z ohm 5,4 ±7% (contacts 1-3)
Winding T (tachometric) ohm 121
The electrical components must be serviced by qualified personnel only.
Unplug the appliance before accessing internal components.
SOI/DT 2007-02 dmm
∼
±7% (contacts 4-5)
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599 38 61-92