ABB DriveIT ACH550-01 User Manual page 33

ACH550 User's Manual
The following figure shows non-recommended motor cable
types.
Figures courtesy of NK cables. Copyright © 2003 NK cables.
The following figure shows the recommended conductor layout.
Recommended (CE & C-Tick)
Symmetrical shielded cable: three
phase conductors and a concentric or
otherwise symmetrically constructed
PE conductor, and a shield
PE
Conductor
and shield
Not allowed for motor cables
(CE & C-Tick)
A four-conductor system: three phase
conductors and a protective
conductor, without a shield.
PE
Preparing for installation
Allowed (CE & C-Tick)
A separate PE conductor is
required if the conductivity of the
cable shield is < 50% of the
conductivity of the phase
conductor.
Shield
Allowed for motor cables with
phase conductor cross section
up to 10 mm
Shield
PE
Shield
2
.
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