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09790-02.2018-DGbFEIRu

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ca-

tions. Motorprotectionswitchisrequired! Motor contactors, feed lines, fuses and motor protection

switches must be rated according to the maximum operating current (see name plate).

Use the following overload protection device:

A current-dependent time-delayed overload protection device for monitoring of all three phases, not

set higher than the rated current of the machine, which must respond at 1.2 times the set current

within 2 hours and must not have responded at 1.05 times the set current within 2 hours, or another

comparable device.

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

ATTENTION When attaching accessories with an electrical cable, a minimum

bending radius of 3 x the cable diameter must be maintained for

laying the cable.

GEA Bock HG8 Series User Manual

Questions and Answers: