Planning the electrical installation
73
Alternative power cable types
Power cable types that can be used with the drive are represented below.
Recommended: Symmetrical shielded cable (three
phase conductors, concentric or otherwise
symmetrical PE conductor, overall shield)
PE conductor
and shield
Shield Shield
A separate PE conductor is required if the
conductivity of the cable shield is less than 50% of the
conductivity of a phase conductor.
Shield
PE
PE
PE
Not allowed for motor cabling with phase
conductor cross-section larger than 10 mm
2
(motor
power > 30 kW): Asymmetric cable
Not allowed: Symmetrical cable with individual
shields for each phase conductor
Shield
(PE)
Not allowed for motor cabling: Separate cables for
each phase and PE