GEA Bock HGZ Series - Standard Motor, Design For Direct Or Partial Winding Start

24
D
GB
F
E
09726-09.2013-DGbF
6| Electrical connection
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.
Inthefactory,themotorisswitchedfordirectstarting(YYY).Forpartwindingstart∆/YYY,remove
thebridgesandconnectthemotorfeedcableaccordingtothecircuitdiagram:
INFO! Whentestingthewindingwithresistancemeter,pleasenotethat
part winding 1 and part winding 2 are internally connected.
6.3 Standardmotor,designfordirectorpartialwindingstart
Designationonthenameplate Stickerontheterminalbox
∆ / YYY
Compressorswiththismarkingaresuitablefordirectorpartialwindingstart.Themotorwindingis
subdividedintotwoparts:Partial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.
INFO! A mechanical unloaded start with bypass solenoid valve is
 notrequired.
400 V
Direktstart YY Teilwicklungsstart Y/YY
1V1 1W11U1
2W12V12U1
L3L2L1 L3L2L1
L3L2L1
1V1 1W11U1
2W12V12U1
Direct start YYY
Part winding start ∆ /YYY