Allen-Bradley PowerFlex 7000 User Manual

72 Rockwell Automation Publication 7000-UM202D-EN-P - May 2018
Chapter 2 Power Component Definition and Maintenance
Figure 60 - Snubber Capacitor Test (Shown with SPS Board Installed)
See Table 3 on page 68 to determine the appropriate snubber capacitance value
for the current rating of the SGCT used.
The capacitance measured is actually affected by the snubber capacitor and
other capacitance in the circuit, including capacitance from the gate driver
circuit. You are actually looking for a consistent reading for all devices.
If the capacitor is out of tolerance, see page 80
for detailed instructions on how
to replace the snubber capacitor.
Heatsink
Heatsink
Snubber
Resistor
Snubber
Capacitor
Sharing Resistor
J1
SPS Board
1
2
SGCT
Test Point
Snubber Capacitor Wire
Use Connector Terminal Screw
for Testing Snubber Capacitor
SGCT Cathode Wire
Snubber Test Point

Allen-Bradley PowerFlex 7000 Specifications

General

Brand	Allen-Bradley
Model	PowerFlex 7000
Category	Controller
Language	English