Chapter 8 - Changing Diodes and IGCTs in 7/9 MVA Phase Modules ABB
8-2 (18) 3BHS202077 ZAB E01 Rev. C ACS 6000 Maintenance Manual
The phase module must be extracted from the cabinet to replace the
clamp, NP and free wheeling diodes but can remain in the cabinet to
replace IGCTs.
Refer to
Chapter 7 - Changing 7/9 MVA Phase Modules
for information on
removing a phase module from the cabinet.
Refer to
Figure 8-3
to locate the semiconductors.
Figure 8-2 Phase Module
8.2 Overview
Pressure adjusting bolts for:
Free wheeling diodes
Clamp and NP diodes
IGCTs
Storage place of
pressure loading gauge
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