Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - ForGe Control (PanelView 550) - Manual (Page 34)

34 Rockwell Automation Publication 7000-UM151E-EN-P - January 2013
Chapter 3 Component Definition and Maintenance
Figure 18 - Transient Suppression Network
Replacing Metal-Oxide Varistors
Metal-oxide varistors (MOV) are part of the TSN located within the connection
cabinet.
1. Ensure there is no power to the equipment.
2. Observe the locations of the connecting links.
3. Detach the connecting links by removing the screws.
4. Using a screwdriver remove the screws at the base.
5. Replace the MOV (polarity is not an issue).
6. Continue by replacing the screws and connecting links.
7.2 kV fuses
5 kV fuses
Varistors
Location of ground
Connecting links
Varistors
Location for 7.2 kV fuses
Location for 5 kV fuses
ATTENTION: To prevent electrical shock, disconnect the main power
before working on the drive. Verify that all circuits are voltage-free using
a hot stick or appropriate voltage-measuring device. Failure to do so may
result in injury or death.