Rockwell Automation 2500 CENTERLINE Motor Control Centers Installation Manual - Manual (Page 69)

Rockwell Automation Publication 2500-IN001C-EN-P - April 2014 69
Commissioning Chapter 7
For incoming line compartments of 8 modules or less: the incoming
cables should be firmly secured halfway between the top of the column
and the incoming line compartment terminals.
For full-line (24 modules) incoming line compartments:
the cables
should be braced every 300 mm if the system’s available short circuit
current is less than 42,000 amperes rms symmetrical. If the system’s
available short circuit current is greater than or equal to 42,000 amperes
rms symmetrical, current bracing should occur every 150 mm.
c. Check the integrity of all field connections.
Recommended torque values not found on individual devices can be
found on the unit wiring diagrams.
d. Check field wired connections made to the MCC.
Refer to wiring diagrams and verify that proper clearances between
adjacent phases and/or phases to PE are being maintained.
8. Verify the voltage and kilowatt ratings on the motor correspond with the
MCC unit ratings.
9. Verify that proper overload relays are installed and/or adjusted to relative
full load current shown on the motor rating nameplate.
10. For applications requiring power fuses, install fuses in fusible switches in
accordance with application requirements.
11. For circuit breaker applications, verify that the circuit breakers are in
accordance with application requirements, and have correct amperage and
trip settings.
12. Set and verify adjustable current, voltage and other settings, according to
device instructions or wiring diagrams.
Refer to the device instruction sheets or manuals supplied with the MCC
for specific start-up guidance.
Component devices in MCC units (such as transfer switches, power factor
correction capacitors, transducers, motor protectors, line monitors, over
and under-voltage relays, and motor windings heaters) can require unique
start-up procedures.
IMPORTANT Do not apply grease or NO-OX-ID to fuse ferrules.
TIP High efficiency motors can have higher locked rotor and inrush
currents, which require higher magnetic trip settings.
ATTENTION: Rockwell Automation AC drives and soft starter units are
shipped with preset factory settings such as ramp speed, current limits,
switch positions, and readouts. Preset factory settings are not suitable
for some applications. Refer to instruction manuals, supplied with the
MCC, for specific start-up guidance.