Snubber capacitance (sgct device) – Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) Commissioning - ForGe Control User Manual
Page 49
Rockwell Automation Publication 7000-IN012B-EN-P - June 2014
49
Commissioning the Drive Chapter 4
Refer to
Table 1 on page 46
to determine the appropriate snubber resistance value
for the current rating of the SGCT used.
If the resistor is found to be out of tolerance, refer to publication
7000-UM202_-
EN-P
for detailed instructions on replacing the snubber resistor assembly.
Snubber Capacitance (SGCT Device)
Turn the multimeter from the resistance to capacitance measurement mode.
Verify the snubber capacitor by measuring from the test point to the heat sink
adjacent to the right for standard rectifiers, or from heat sink to heat sink. For
SPS rectifiers, measure from the test point to pin 1 of the Phoenix connector that
plugs into J1 of the SPS board (disconnect the J1 connector from the SPS board
first).
Figure 34