Rockwell Automation 1512A MV Controllers, 400A One-High Cabinet, Standard and Arc-Resistant Enclosure - Manual (Page 49)

Rockwell Automation Publication 1512A-UM100F-EN-P - May 2013 41
Maintenance Chapter 5
Power Lock-out Procedure
1. Disconnect and lock out all feeder power supplies to the starter.
2. Move the isolation switch handle to the OFF position.
3. If the unit is equipped with power factor correction capacitors, stored
energy must be dissipated before entering the power cell. Wait at least five
minutes before entering the power cell or dissipate the power using the
following procedure:
a. Verify that the isolation switch handle is in the OFF position.
b. Open the low voltage door.
c. Plug the appropriate power supply (120 or 230V) into the auxiliary
power receptacle on the control panel (see Figure 41 ).
d. Move the control switch to the TEST position.
e. Electrically operate the contactor by pushing the START button on the
unit or at a remote location.
f. Disengage the contactor and move the control switch to the
NORMAL position. Disconnect the external power supply.
g. Complete the Power Lockout procedure.
ATTENTION: Use suitable personal protective equipment (PPE) per local codes
or regulations. Failure to do so may result in severe burns, injury or death.
ATTENTION: Always perform the power lockout procedure before servicing the
equipment. Failure to do so may result in severe burns, injury or death.
ATTENTION: The following procedure requires moving the isolation switch
handle to the ON position. To avoid shock hazards, disconnect and lock out
incoming power before proceeding with servicing the equipment. Failure to
lock out incoming power will result in a live power cell once the isolation switch
handle is in the ON position and may cause severe burns, injury or death.
Rockwell Automation does not assume any responsibility for injuries to
personnel who have not completed the following safety procedure prior to
servicing the equipment.