Control power checks (no medium voltage) – Rockwell Automation 7000A PowerFlex Medium Voltage AC Drive (A Frame) - ForGe Control User Manual
Page 167
Rockwell Automation Publication 7000A-UM200C-EN-P - June 2014
167
Preventative Maintenance Schedule
Appendix C
•
Verify torque on heatsink bolts (electrical connections to bullet
assemblies) is within specifications (13.5 N•m).
•
Clean all contaminated components using a vacuum cleaner and wipe
clean components where appropriate.
•
Note: An important component to check for contamination is the
heatsink. The fine grooves in the aluminum heatsinks can capture dust
and debris.
5.
Carry out the physical inspection and verification for the proper operation
of the contactor/isolator interlocks, and door interlocks.
•
Carry out the physical inspection and verification for the proper
operation of the key interlocks.
•
Physical verification of the additional cooling fans mounted in the AC
Line Reactor cabinet, Harmonic Filter cabinet for mounting and
connections.
•
Carry out the cleaning of the fans and ensure that the ventilation
passages are not blocked and the impellers are freely rotating without
any obstruction.
•
Carry out the insulation meggering of the drive, motor, isolation
transformer/line reactor, and the associated cabling.
•
for meggering procedure.
•
Check clamp head indicator washers for proper clamp pressure, and
adjust as necessary.
Refer to
for details on proper clamp pressure.
Control Power Checks (No Medium Voltage)
1.
Apply Control power to the PowerFlex drive, and test power to all of the
vacuum contactors (input, output, and bypass) in the system, verifying all
contactors can close and seal in.
2.
Refer to Publicat
a detailed description of all
contactor maintenance.
3.
Verify all single-phase cooling fans for operation.
4.
This includes the cooling fans in the AC/DC Power supplies and the DC/
DC converter.
5.
Verify the proper voltage levels at the CPT (if installed), AC/DC Power
Supplies, DC/DC converter, isolated gate power supply boards.
•
for appropriate procedures/voltage levels for the
above checks.
IMPORTANT
Do not use a blower.