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96179-01.2015-DGbFEI

5| Electrical connection

5 Electrical connection

  DANGER! Highvoltage!Riskofelectricshock!Onlycarryoutworkwhenthe

electrical system is disconnected from the power supply!

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.

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 = 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.

INFO! A mechanical unloaded start with bypass solenoid valve is

 notrequired.

5.1 Information for contactor and motor contactor selection

Allprotectiondevicesandswitchingormonitoringunitsmustbettedinaccordancewiththelocal

safetyregulationsandestablishedspecications(e.g.VDE)aswellaswiththemanufacturer’sinfor-

mation. Motor protectionswitches are required! Motor contactors, feed lines, fuses and motor

protection switches must be rated on the basis of the maximum working current (see name plate).

For motor protection use a current-dependent and time-delayed overload protection device for moni-

toring all three phases. Set the overload protection device so that it must be actuated within 2 hours,

if there is 1.2 times the max. working current.

GEA HGX4 R134a User Manual

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