Rockwell Automation 6000 PowerFlex Medium Voltage Variable Frequency Drive Commissioning Manual - Manual (Page 75)

Rockwell Automation Publication 6000-IN007A-EN-P - October 2014 75
No-load Test Chapter 4
Close Isolation Switches in Bypass Cabinet
1. Manual bypass (see Figure 21 )
a. Open QS1 (direct line operation) isolation switch
b. Close QS2 and QS3 (drive operation) isolation switches
2. Automatic Bypass (with isolating switches) (see Figure 20 )
a. Close QS1 and QS2 (drive operation) isolation switches
Close Input Circuit Breaker
1. Remove tags and locks on the input circuit breaker.
2. Close input circuit breaker.
3. Verify that there are no faults or warnings on the HMI screen.
Check Cooling Fan Operation
1. Open the Low Voltage panel door on the Isolation Transformer Cabinet
door.
2. Close all of the Drive Main Cooling Fan circuit breakers (Q10, ...) in the
Isolation Transformer Cabinet LV Panel.
3. Verify that all cooling fans are operating.
4. Turn off the first Main Cooling Fan Circuit Breaker (Q10) and record the
direction of the fan.
Viewed from the rear, the blades will rotate left to right (counter-clockwise
when viewed from the top). If the fan is rotating in the wrong direction,
turn off the specific Main Cooling Fan breaker. Verify the output voltage is
0. Switch two wires on the output of the circuit breaker.
5. Turn the circuit breaker back on, and repeat for the remaining Main
Cooling Fan circuit breakers.
6. Verify that there are no faults or warnings on the HMI screen.
ATTENTION: Medium Voltage is required for this test. Close and lock all
medium voltage doors on the PowerFlex 6000 and Bypass Cabinet (if supplied)
prior to closing the input circuit breaker. All safety related work practices
outlined in Electrical Safety requirements for Employee Work places must be
followed when removing the input circuit breaker from the locked out, tagged
out state.
IMPORTANT All fans must turn in the same direction.