Rockwell Automation 6000 PowerFlex Medium Voltage Variable Frequency Drive Commissioning Manual - Manual (Page 23)

Rockwell Automation Publication 6000-IN007A-EN-P - October 2014 23
Preparation and Inspection Chapter 2
Incoming Line and Outgoing Motor cables must be routed separately to prevent
cable insulation damage.
All cables must be terminated on each end and sufficiently torqued.
All customer power cables must be Hi-Potted or Meggered and read a sufficient
insulation value. Review Hi-Pot or megger test report from the customer.
Control Wiring
Identify all customer-required control wiring detailed on the Electrical Drawings
and locate it within the terminal blocks. Verify the cable insulation is not
tightened in a terminal connection. All connections must have proper continuity.
Inspect the control cable routing to ensure that DC control wiring and AC
control wiring are separated from each other. Routing them together in the same
bundle or cabling product may result in unwanted noise being induced in the
drive control. In the overhead cable tray provided at the front of the drive, the AC
control, DC control and fiber optic cables must be separate. These cables may
also be from the bottom.
Control wiring must be routed separately from power cabling.
Inspect for additional control not shown on the Electrical Drawings. Determine
its purpose, mark the changes on the electrical diagram and send the prints to the
Start-up Project Manager for future reference.
Perform a tug test on all control cables to ensure that they are securely fastened,
and check each plug and connector to ensure it is properly seated in its socket.
Drive Megger Check Isolate the Power and Control Circuits
1. Isolate and lock out the drive system from any high voltage source.
Disconnect any incoming power sources, medium voltage sources should
be isolated and locked out and all control power sources should be turned
off at their respective circuit breaker(s).
Verify with a potential indicator that power sources have been
disconnected, and that the control power in the drive is de-energized.
ATTENTION: Verify the grounding cable connection is secure.
Disconnect the low voltage power before the megger test.
Short circuit the 3 input cables and 3 output cables on one point.