ABB ACS150 series, Руководство пользователя

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Planning the electrical installation
Alternative power cable types
Power cable types that can be used with the drive are presented below.
Allowed as motor cables
(recommended for input cables also)
Symmetrical shielded cable: three phase conductors,
a concentric or otherwise symmetrically constructed
PE conductor and a shield
Note: A separate PE conductor is required if the
conductivity of the cable shield is not sufficient for the
purpose.
PE conductor
and shield
Shield
Shield
PE
Allowed as input cables
A four-conductor system: three phase conductors and
a protective conductor
PE
Shield
PE PE
Not allowed for motor cabling: Separate cables for
each phase and PE
PE
Motor cable shield
To function as a protective conductor, the shield must have the same cross-sectional
area as the phase conductors when they are made of the same metal.
To effectively suppress radiated and conducted radio-frequency emissions, the
shield conductivity must be at least 1/10 of the phase conductor conductivity. The
requirements are easily met with a copper or aluminium shield. The minimum
requirement of the motor cable shield of the drive is shown below. It consists of a
concentric layer of copper wires. The better and tighter the shield, the lower the
emission level and bearing currents.
Insulation jacket
Copper wire screen
Cable core