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Power Connections
NBRA-657/667
Installation and Start-up Guide for NBRA-6xx
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.
U1
V1
PE
ACS 600
1
Figure 4-8 Top: NBRA-657/667 power connections.
Bottom: Resistor cable earthing.
Chapter 4 – Electrical Installation
UDC+ UDC–
NBRA-6x7
W1
R+
R–
1
2
3
PE
R+
R–
R
Braking Resistor
2
3
U2
V2
W2
4-13
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