GEA Bock HG7 - Manual (Page 16)

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GB
F
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Ru
09706-01.2015-DGbFEIRu
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 Part winding start
The motor is wired for direct start (YYY resp. YY) at the factory. For part winding start Δ/YYY resp.
Y/YY the bridges must be removed and the motor feed line connected according to the circuit diagram:
5.3 Standard motor, design for direct or part winding start
5| Electrical connection
INFO A mechanical unloaded start with bypass solenoid valve is
not required.
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.
INFO When testing coils with resistance tester, please note that partial
winding 1 and partial winding 2 are wired internally in HG7.
Designation on the name plate Sticker on the terminal box
until A039 from A040 until A039 from A040
∆/YYY Y/YY
Y/YY
Compressors with this marking are suitable for direct or partial winding start. The motor winding is
subdivided into two parts:
Until type code A039: Part winding 1 = 60% and part winding 2 = 40%. This winding division
reduces the start-up current needed for a part winding start to approx. 65% of that for a direct start.
From type code A040: Part winding 1 = 50% and part winding 2 = 50%. This winding division
reduces the start-up current needed for a part winding start to approx. 50% of that for a direct start.