GEA Bock HA5 - Manual (Page 16)

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5| Electrical connection
400 V
Direktstart YY Teilwicklungsstart Y/YY
1V1 1W1 1U1
2W1 2V1 2U1
L3 L2 L1 L3 L2 L1
L3 L2 L1
1V1 1W1 1U1
2W1 2V1 2U1
Direct start YY Part winding start Y/YY
ATTENTION! Failure to do this results in opposed rotary fields 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.
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: