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Chapter 4 – Electrical Installation
Notes on
NBRA-658/659/669
Power Connections
4-16
2
1
3
From ACS 600
Figure 4-11 Cabling inside NBRA-658/659/669.
• When the NBRA unit is installed in a metal cabinet and reliably
connected to the chassis, the cable screens (and third conductors, if
present) can be earthed at the cabinet entry point (see example B
on previous page).
• The UDC+ and UDC– terminals of the ACS 604 unit are M10
(tightening torque: 35 Nm).
• When two resistors are connected in parallel, it is practical to chain
the resistors as shown below.
NBRA-6xx
R+
R–
1
2
3
To Resistor(s)
Resistor
R+
R–
Installation and Start-up Guide for NBRA-6xx
35 Nm
6 Nm
Resistor
R+
R–
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