Appendix C - Iec Installation; Iec Installations; Power Cables; Alternative Power Cable Types - ABB ACS 601 Hardware Manual

IEC Installations

Power Cables

Alternative Power Cable
Types
Recommended
Symmetrical shielded cable: three phase conductors
and a concentric or otherwise symmetrically
constructed PE conductor, and a shield
PE conductor
and shield
A four-conductor system:
three phase conductors
and a protective
conductor.
ACS/ACC/ACP 601 Drives
Appendix C – IEC Installation
This appendix is a supplement to Chapter 3 – Electrical Installation . It
contains additional information to be used in IEC installations. For
installations requiring CE compliance, refer also to the section entitled
CE Marking in Appendix A.
For ACx 601 frame size R5 and larger or larger 30 kW motors
symmetrical shielded motor cable must be used (figure below). A four-
conductor system can be used up to frame size R4 with up to 30 kW
motors, but shielded symmetrical motor cable is recommended.
A four-conductor system is allowed for power cabling, but shielded
symmetrical cable is recommended. To operate as a protective
conductor, the shield conductivity must be at least 50 % of the
conductivity of the phase lead.
Compared to a four-conductor system, the use of symmetrical shielded
cable reduces electromagnetic emission of the whole drive system as
well as motor bearing currents and wear.
The motor cable and its PE pigtail should be kept as short as possible
in order to reduce electromagnetic emission as well as capacitive
current.
Power cable types that can be used with ACx 600 are represented
below.
Shield
PE
PE
Not allowed for motor cables
A separate PE conductor is required if the conductivity
of the cable shield is < 50 % of the conductivity of the
phase conductor.
Shield
Not allowed for motor cables larger than
2
10 mm (motors > 30 kW).
ACx=ACS/ACC/ACP
PE
Shield
C-1