Testing snubber resistors, Replacing snubber and sharing resistor – Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - ForGe Control (PanelView 550) User Manual
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Rockwell Automation Publication 7000-UM151E-EN-P - January 2013
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Component Definition and Maintenance Chapter 3
Testing Snubber Resistors
You do not require access to the snubber resistor to test its resistance. There is a
snubber circuit test point located under the heatsink within the PowerCage.
There is one test point for each device. To verify the resistance, follow the
procedures outlined in the PowerFlex 7000 Commissioning Manual.
Figure 45 - Testing the snubber resistor
Replacing Snubber and Sharing Resistor
The snubber and sharing resistors are part of the resistor assembly located behind
the PowerCage.
1. Remove the PowerCage as outlined in
.
2. Note the connection of the leads for correct replacement.
Measure resistance between
heatsink and test point
Snubber resistor test point