Manual

D
GB
F
E
13
96020-02.2015-DGbFEI
5| Electrical connection
5.2 Standardmotor,designfordirectorpartialwindingstart
Designation on the name plate Sticker on the terminal box
Y/YY
Compressors with this marking are suitable for direct or partial winding start. The motor winding is
subdivided into two parts: Partial winding 1 = 66% and part winding 2 = 33%. This winding division
reduces the start-up current needed for a part winding start to approx. 65% of that for a direct start.
400 V
Direktstart YY Teilwicklungsstart Y/YY
1V1 1W11U1
2W12V12U1
L3L2L1 L3L2L1
L3L2L1
1V1 1W11U1
2W12V12U1
Direct start YY
Part winding start Y/YY
The motor is wired for direct start (YY) at the factory. For part winding start (Y/YY) the bridges must be
removed and the motor feed line connected according to the circuit diagram:
INFO A mechanical unloaded start with bypass solenoid valve is
notrequired
ATTENTION Failureto do this results in opposed rotary elds and results in
damage to the motor. After the motor starts up via partial winding
1,partialwinding2mustbeswitchedonafteramaximumdelay
of one second . Failure to comply can adversely affect the service
life of the motor.