Motor Connections; Conduit; Armored Cable; Motor Insulation Requirements - ABB ACS 600 Hardware Manual

Motor Connections

Conduit

Armored Cable

Motor Insulation
Requirements
601/604/607 US Supplement
The ACx 600 ground terminals should not be connected in series in
case of a multiple installation. Incorrect grounding can cause physical
injury, death or equipment malfunction and increase electromagnetic
interference.
WARNING! Operation is not allowed if the motor nominal voltage is
less than one half of the ACx 600 nominal input voltage, or the motor
nominal current is less than 1/6 of the ACx 600 nominal output current.
WARNING! Do not make any voltage tolerance or insulation resistance
test (Hi-Pot or Megger) on any part of the ACx 600. Disconnect motor
wires before making any tests of the motor or the cables between the
drive and motor.
Metallic conduit must be used for motor wiring unless armored cable or
power shield cable is used. Where conduits must be coupled together,
the joint must be bridged with a ground conductor bonded to the
conduit on each side of the joint. The conduits must also be bonded to
the drive enclosure. Use separate conduits for input power, motor,
brake resistors, and control wiring. Do not run motor wiring from more
than one drive in the same conduit.
If metallic conduit is not used, type MC continuous corrugated
aluminum armor cable with symmetrical grounds or power shield cable
must be used for the motor cables. If these cables are used, the motor
cables can be run in the same cable tray as other 460V or 600V power
wiring. Control and signal cables must not be run in the same tray as
power cables.
Six conductor (3 phases and 3 ground) type MC continuous corrugated
aluminum armor cable with symmetrical grounds is available from the
following suppliers. Trade names are in parentheses.
Anixter Wire & Cable (Philsheath)
BICC General Corp (Philsheath)
Rockbestos Co. (Gardex)
Oaknite (CLX)
Power shielded cables are available from Belded, Olflex, and Pirelli.
As with all AC drives employing the most modern IGBT invertor
technology, the output waveform of the ACx 600 consists of a series of
rectangular voltage pulses. Regardless of the output frequency, the
voltage of the pulses is approximately 1.35 times the input line voltage
with a very short rise time.
Safety Instructions
vii