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5 | Electrical connection
5
Electrical connection
DANGER
ATTENTION When attaching accessories with an electrical cable, a minimum
INFO
5.1 Information for contactor and motor contactor selection
All protection equipment, switching and monitoring devices must comply with the local safety reg-
ulations and established specifications (e.g. VDE) as well as the manufacturer's specifications.
Motor protection switches are required! Motor contactors, feed lines, fuses and motor protec-
tion switches must be rated according to the maximum operating current (see name plate). For
motor protection, use a current-dependent, time-delayed overload protection device for monitoring
all three phases. Adjust the overload protection device so that it must be actuated within 2 hours at
1.2 times the maximum 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
Star-delta start-up is only possible on 230 V voltage supply. Example:
Direct start
L1 L2
L3
Risk of electric shock! High voltage!
Only carry out work when the electrical system is disconnected
from the power supply!
bending radius of 3 x the cable diameter must be maintained for
laying the cable.
Connect the compressor motor in accordance with the circuit diagram
(see inside of terminal box).
Use suitable cable glands 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.
∆ / Y
230 V ∆
Star-delta start
L1 L2
L1 L2
L3
INFO
L3
The
connection
examples
shown
refer to the stand-
ard version. In the
case of special volt-
ages, the instruc-
tions affixed to the
terminal box apply.
15
D
GB
F
E
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