Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - Classic Control - Manual (Page 333)

Component Definition and Maintenance 6-43
7000 “B” Frame 7000-UM150I-EN-P – June 2013
SGCT PowerCages
The snubber circuit is shown in Figure 6.30. Measure the resistance
across two adjacent heatsinks. A value between 60 kΩ and 75 kΩ
indicates a good sharing resistor.
Rsh
Rsn-2
Cs-1
Cs-2
Anode
Rsn-1
Cathode
Cs-1
Cs-2
Anode
Rsn -2
Rsh
Rsn -1
Snubber Resistor Test Point
Cathode
Rsh
Rsn-2
Cs-1
Cs-2
Anode
Rsn-1
Cathode
Rsh
Rsn-2
Cs-1
Cs-2
Anode
Rsn-1
Cathode
Cs-1
Cs-2
Anode
Rsn -2
Rsh
Rsn -1
Snubber Resistor Test Point
Cathode
Cs-1
Cs-2
Anode
Rsn -2
Rsh
Rsn -1
Snubber Resistor Test Point
Cathode
Figure 6.30 – Snubber Circuit for SGCT module