Rockwell Automation Publication 7000L-UM301F-EN-P - March 2020 293
Component Definition and Maintenance Chapter 5
Figure 242 - Detail of the clamping assembly
Symmetrical Gate
Commutated Thyristor
Replacement
The Symmetrical Gate Commutated Thyristor (SGCT or device) with attached
circuit board is located within the PowerCage assembly.
SGCTs must be replaced in matched sets:
• 4160V systems use sets of 2
• 6600V systems use sets of 3
SGCTs can be removed and replaced without interrupting the cooling fluid path.
To remove SGCTs, the following procedure is to be employed:
Clamp Head
DO NOT ADJUST calibration nut.
Adjusting Nut used for loosening
and applying load to assembly.
Disc Springs
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