Rockwell Automation Publication 7000-UM202D-EN-P - May 2018 83
Power Component Definition and Maintenance Chapter 2
Figure 73 - 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 4
. A simple schematic diagram in Figure 74 shows the snubber
component connections across an SGCT.
Table 4 - SCR Snubber Circuit Resistance and Capacitance Values
Cathode
Cs-2
Cs-1
Rsh
Rsn-2
Rsn-1
Anode
SCR Rating Sharing Resistance Snubber Resistance Snubber Capacitance
350, 400, 815 A 80 kΩ 60 Ω 0.5 µf
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