Rockwell Automation 2500 CENTERLINE Motor Control Centers Installation Manual User Manual
Page 68
68
Rockwell Automation Publication 2500-IN001C-EN-P - April 2014
Chapter 7
Commissioning
The following procedures should be executed only by a ‘skilled person’ as defined
by IEV 195-04-01 and 3.52 of IEC 60204-1, as follows:
‘Skilled person
Person with relevant education and experience to enable him or her to perceive
risks and to avoid hazards that operation or maintenance of a product can create.’
Follow these procedures for completing the pre-commissioning checklist.
1.
Check and verify that the MCC is installed per instructions.
2.
Inspect and verify that the MCC is level and secured.
3.
Inspect the enclosure and units for damage and verify that electrical
clearances have been maintained based on the voltage and impulse rating
of the equipment.
4.
Remove all blocks or temporary holding means used for shipping
component devices in the MCC.
5.
Check the integrity of the bus splice connections.
Recommended torque values can be found on the information label on the
interior of the vertical wireway door or on the interior right side plate of
fixed units.
for splicing information.
6.
Check and verify that all PE connections are made, based on applicable
codes and standards.
If the PE conductor is not provided or has been removed, verify MCC
columns are connected with joining hardware to provide a continuous PE
path. See
for more information.
7.
Perform the following for field wiring:
a. Check the field wiring for proper conductor sizing.
b. Verify all incoming and outgoing power wiring is secure, well
supported, and braced to withstand the effects of a fault current as
detailed in
ATTENTION: Verify that motor acceleration times are within specific
application specifications.
Excessive starting currents and/or acceleration times can cause inverse time circuit
breakers, power fuses, overload relays, and other components to overheat and/or
shut down equipment.
TIP
The factory-made horizontal power bus to vertical distribution bus
connections are tightened by a computer-controlled torquing system.
Therefore, these components do not need torquing by the customer.