Rockwell Automation Publication 7000-UM202H-EN-P - November 2023 81
Chapter 2 Power Component Definition and Maintenance
Figure 74 - SCR Sharing Resistance Test
SCR Gate-to-Cathode Resistance
One test that can be performed on SCRs that cannot be performed on SGCTs is
a Gate-to-Cathode Resistance Test. Performing a Gate-to- Cathode resistance
measurement will identify damage to an SCR by revealing either an open or
shorted gate to cathode connection. To test an SCR from gate-to-cathode,
disconnect the SCR gate leads from the self powered gate driver board and
measure the gate-to-cathode resistance on the SCR firing card Phoenix
connector.
Resistance between heatsink
and red wire at plug is
sharing resistance
To Next Page
Loading...
Need help?
General
