5 | electrical connection – GEA Bock HG34P User Manual

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09618-11.2014-DGbFEIRu

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.

5.1 Information for contactor and motor contactor selection
All protection devices and switching or monitoring units must be fitted in accordance with the local
safety regulations and established specifications (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.

5.2 Connection of the driving motor
The compressor is designed with a motor for star-delta circuits.

Designation on the name plate

Sticker on the terminal box

∆ / Y

Star-delta start-up is only possible on 230 V voltage supply. Example:

230 V ∆

Direct start

Star-delta start

400 V Y

Direct start only

Elektrischer Anschluss

Electrical connection

Raccordement électrique

∆

/ Y

96027-11.06-DGbF

∆

Niedere Spannung

Low voltage

Bas voltage

Hohe Spannung

High voltage

Haut voltage

L1 L2