User guide

D
GB
F
E
15
96280-12.2014-DGbFEIRu
5.2 Standard motor, design for direct or part 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 = 70% and part winding 2 = 30%. 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.
5| Electrical connection
5.1 Information for contactor and motor contactor selection
Allprotectionequipment,switchingandmonitoringdevicesmustcomplywiththelocalsafetyregula-
tionsandestablishedspecications(e.g.VDE)andregulationsaswellasthemanufacturer’sspeci-
cations.Motorprotectionswitchesarerequired! Motor contactors, feed lines, fuses and motor
protectionswitchesmustberatedaccordingtothemaximumoperatingcurrent (see name plate).
For motor protection, use a current-independent, time-delayed overload protection device for monitor-
ing all three phases. Adjust the overload protection device so that it must be actuated within 2 hours
at 1.2 times the maximum working current.
INFO
Connect the compressor motor in accordance with the circuit diagram
(seeinsideofterminalbox).
Use suitable cable entry point of the correct protection type (see
nameplate)forroutingcablesintotheterminalbox.Insertthestrain
reliefs and prevent chafe marks on the cables.
Comparethevoltageandfrequencyvalueswiththedataforthe
mains power supply.
Only connect the motor if these values are the same.
DANGER Risk of electric shock! High voltage!
Only carry out work when the electrical system is disconnected
from the power supply!
5 Electrical connection