Chapter 4 – Electrical Installation
4-10 Installation and Start-up Guide for NBRA-6xx
Power Connections
NBRA-655/656/666
WARNING! Before installation, switch off the mains supply to the
ACS 600. Wait five minutes to ensure that the intermediate circuit is
discharged. Switch off all dangerous voltages connected to the inputs
or the outputs of the ACS 600.
Figure 4-6 Top: NBRA-655/656/666 power connections.
Bottom: Resistor cable earthing.
NBRA-6xx
R
Braking Resistor
ACS 600
U2 V2 W2U1 V1 W1
R+
R+
1
2
3
UDC+
UDC–
R–
R–
PE
PE
12
3
3
2
1
Copper Sleeve
Clamp
Screen Earthing
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