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Rockwell Automation 7000A PowerFlex Medium Voltage Drive (A-Frame) - Classic Control User Manual

Page 342

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6-38

Component Definition and Maintenance

7000A-UM150F-EN-P –June 2013

7000 “A” Frame


SGCT PowerCages


The snubber circuit is shown in Figure 6.29. 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 6.29 – Snubber Circuit for SGCT module

Rsh

Rsn-1

Cs-1

Cs-2

Anode

Cathode

Rsn-2


Figure 6.30 – Snubber Circuit Assembly for SGCT module