Electrical Connection; Information For Contactor And Motor Contactor Selection - BOCK HGX34e A Series Assembly Instructions Manual

5| Electrical connection

5 Electrical connection

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
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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-
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toring all three phases. Set the overload protection device so that it must be actuated within 2 hours,
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if there is 1.2 times the max. working current.
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DANGER! H igh voltage! Risk of electric shock! Only carry out work when the
electrical system is disconnected from the power supply!
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.
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.