Rockwell Automation 7000A PowerFlex Medium Voltage AC Drive - Air-Cooled (A Frame) User Manual
Page 275
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Component Definition and Maintenance 5-33
7000 “A” Frame
7000A-RM001A-EN-P – January 2011
SGCT
PowerCages
The snubber circuit is shown in Figure 5.26. Figure 5.30 shows the
physical locators of the same circuit. Measure the resistance across two
adjacent heatsinks. A value between 60 kΩ and 75 kΩ indicates a good
sharing resistor.
Cs-1
Cs-2
Anode
Rsn-2
Rsh
Rsn-1
Snubber Resistor Test Point
Cathode
Cs-1
Cs-2
Anode
Rsn-2
Rsn-2
Rsh
Rsn-1
Snubber Resistor Test Point
Cathode
Figure 5.26 – Snubber Circuit for SGCT module
Rsh
Rsn-1
Cs-1
Cs-2
Anode
Cathode
Rsn-2
Figure 5.27 – Snubber Circuit Assembly for SGCT module
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