
Maintenance and Troubleshooting
ADDvantage-32 PLUS ● AC to DC Power Converter
7-30
SCRTEST1LAN
Figure 7-7. SCR Module Layout
The measured voltage that is significantly lower than all the others measured indicates a
bad SCR and can be determined with the following table:
BA1 BA2
Phase A CR1 CR4
Phase B CR2 CR5
Phase C CR3 CR6
Example: Measured AC voltages (snubber disconnected)
BA1 BA2
Phase A 285 230
Phase B 150 250
Phase C 327 243
The above table indicates CR2 is leaky.
NOTE
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