Kaydee Posted September 11, 2022 Share Posted September 11, 2022 Pls can someone advice on what to do if one of the engine generator phase is indicating low voltage and zero frequency, while others phases (A&B) indicate the correct voltage and frequency. The line contactor was replaced, the fuse at the upper electrical panel at FS 245 was ok, new generator installed, new voltage regulator was also installed, yet the discrepancy persist. Kind help provide any assistance. Thanks Quote Link to comment Share on other sites More sharing options...
n1dp Posted September 12, 2022 Share Posted September 12, 2022 Are you getting voltage at the generator terminals in the QEC? Quote Link to comment Share on other sites More sharing options...
Kaydee Posted September 13, 2022 Author Share Posted September 13, 2022 Yes, there was voltage when the generator was on- line.. However, there is still no frequency and low voltage when the generator switch is in off position Quote Link to comment Share on other sites More sharing options...
n1dp Posted September 16, 2022 Share Posted September 16, 2022 I guess I need to ask if these are the upgraded generator control panels where the "field trip" position on the generator switch is eliminated. If so, is it displaying a fault code? Quote Link to comment Share on other sites More sharing options...
Solution Kaydee Posted September 16, 2022 Author Solution Share Posted September 16, 2022 I found that the output of the generator from the generator electrical box was not properly grounded to the engine. Cable ground repaired, system tested and found ok 1 Quote Link to comment Share on other sites More sharing options...
n1dp Posted September 18, 2022 Share Posted September 18, 2022 Good to hear. Was this found at the generator in the nacelle? Quote Link to comment Share on other sites More sharing options...
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