78 Rockwell Automation Publication 7000-UM202H-EN-P - November 2023
Chapter 2 Power Component Definition and Maintenance
Figure 71 - Snubber Circuit Assembly for SCR Rectifier Module
SCR Testing
The following section verifies SCR semiconductors and all associated snubber
components. For quick reference to the expected resistance and capacitance
values, see Table 7
. A simple schematic diagram in Figure 72 shows the snubber
component connections across an SGCT.
Cathode
Cs-2
Cs-1
Rsh
Rsn-2
Rsn-1
Anode
Table 7 - SCR Snubber Circuit Resistance and Capacitance Values
SCR Rating Sharing Resistance Snubber Resistance Snubber Capacitance
350, 400, 815 A 80 kΩ 60 Ω 0.5 µf
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