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09726-06.2018-DGbF

6| Electrical connection

6.1 Information for contactor and motor contactor selection

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!

6 Electrical connection

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.

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 HGZ7 Series User Manual

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