Nate Anderson Posted October 25, 2018 Share Posted October 25, 2018 During the generator ops check, the book tells you to sequentially turn on/off the generators to tell you if the generator can handle the load of the aircraft. When generator 2,3,4 are off generator #1 shows high voltage on phase B only (121 volts). Along with that, we are getting ECBU's 6,7,8 input failures. We have changed GCU, engine generator and swapped BIU's. We still are getting the same problem. Any input will help. Thanks in advance Quote Link to comment Share on other sites More sharing options...
munirabbasi Posted October 26, 2018 Share Posted October 26, 2018 (edited) 20 hours ago, Nate Anderson said: During the generator ops check, the book tells you to sequentially turn on/off the generators to tell you if the generator can handle the load of the aircraft. When generator 2,3,4 are off generator #1 shows high voltage on phase B only (121 volts). Along with that, we are getting ECBU's 6,7,8 input failures. We have changed GCU, engine generator and swapped BIU's. We still are getting the same problem. Any input will help. Thanks in advance Oh There are problem of load sharing on B phase. Check the Cargo compartment Recirculating FAN motor how much current drawn by the fan A & C phase and Galley power outlets.Also Check Y grounding/current transformer connections polarity X1 and X2 of The ENGINE QEC/FS 245. Munir Abbasi Home of hercules Pakistan Edited October 26, 2018 by munirabbasi Quote Link to comment Share on other sites More sharing options...
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