Grounding And Routing; Motor Cable Shielding; Grounding; Drive’s Motor Connection Terminals - ABB ACS550 User Manual

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Grounding and routing

Motor cable shielding

Motor cables require shielding using conduit, armored cable or shielded cable.
• Conduit – When using conduit:
– Bridge joints with a ground conductor bonded to the conduit on each side of
– Bond conduit run to the drive enclosure.
– Use a separate conduit run for motor cables (also separate input power and
– Use a separate conduit run for each drive.
• Armored cable – When using armored cable:
– Use six-conductor (3 phases and 3 grounds), type MC continuous corrugated
– Armored motor cable can share a cable tray with input power cables, but not
• Shielded cable – For shielded cable details, see section
requirements for CE & C-Tick compliance

Grounding

See section
For CE compliant installations and installations where EMC emissions must be
minimized, see section
Drive's motor connection terminals
The drive's motor and input power terminals have the same specifications. See
section
Motor cable requirements for CE & C-Tick compliance
The requirements in this section apply for CE or C-Tick compliance.
Minimum requirement (CE & C-Tick)
The motor cable must be a symmetrical three conductor cable with a concentric PE
conductor or a four conductor cable with a concentric shield, however, a symmetrical
constructed PE conductor is always recommended. The following figure shows the
minimum requirement for the motor cable screen (for example, MCMK, NK Cables).
Insulation jacket
Technical data
the joint.
control cables).
aluminium armor cable with symmetrical grounds.
with control cables.
Ground connections
Effective motor cable screens
Drive's power connection terminals
Copper wire screen
on page 274.
on page 266.
on page 275.
on page 268.
ACS550 User's Manual
Motor cable
Inner insulation
Cable core