NORD Drivesystems BU0135 - Manual (Page 25)

2 Assembly and installation
BU 0135 GB-2713 Pre-series version 25
2.5 Electrical connection of the power unit
All connection terminals are located in the housing
box of the motor starter.
One terminal level is provided for the power
connections and one for the control connections.
The earthing connections (device earthing) are
located on the base in the cast housing.
Before and while the device is connected, the
following must be observed:
1. Ensure that the mains supply provides the correct
voltage and is suitable for the current required
(see Section 7 Technical Data).
2. Ensure that suitable circuit breakers with the
specified nominal current range are inserted
between the voltage source and the inverter.
3. Connect the mains voltage directly to the
terminals L
1
-L
2
-L
3
and PE.
4. To connect the motor, three flexible wires U-V-W
should be used when mounting the motor.
5. For wall-mounting a 4-conductor shielded motor
cable (recommended) to the terminals U-V-W and
earth should be used.
NOTE: if certain wiring sleeves are used, the maximum connection cross-section can be reduced.
Screwdriver: Use a 0.6 x 3.5 mm slot-head screwdriver to connect the power unit.
NOTE: Only use copper cables with temperature class 80°C or equivalent for connection. Higher
temperature classes are permissible.
ATTENTION: This device produces high frequency interference, which may make additional suppression
measures necessary in domestic environments. (Details in Section. 7.3 / 7.4 (EMC))