Do you have a question about the C90GTi and is the answer not in the manual?
Questions and answers
Joe Mojsak
February 27, 2025
King Air 350 abnormal checklist: Both Gen Ties Open. You Manually close the Gen Ties with both Generators on line. Why, the next step in the checklist says: MAN TIES CLOSE-ILLUMINATED? They shouldn’t be since both generators are on line.
2 comments:
Mr. Anderson
February 27, 2025
The "MAN TIES CLOSE" annunciator illuminates when the generator bus tie relays are manually closed, completing a latching circuit. This prevents the automatic closing of the bus ties and activates the annunciator readouts. Even if both generators are online, the manual closure of the Gen Ties switch forces the relays to stay closed, triggering the indication.
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Joe Mojsak
February 27, 2025
Thank you so much!
Joe
Joe Mojsak
February 27, 2025
Abnormal checklist BOTH GEN TIES OPEN.
You manually close them. Next step in checklist:
MAN TIES ILLUMINATED. They shouldn’t be since generators are on line. Does that mean ANY time you manually close them regardless of generator status, the MAN CLOSED light illuminates?
1 comments:
Mr. Anderson
May 14, 2025
Yes, the MAN TIES CLOSE annunciator activates (illuminates) when the generator bus tie relays are manually closed, as long as the latching circuit is completed. However, if a fault opened the tie, the relay cannot be manually closed until the BUS SENSE switch is used to reset it. Therefore, the light does not illuminate if the tie cannot be closed due to a fault.
This answer is automatically generated
Joe Mojsak
February 27, 2025
When both genties open with both generators on line and you manually close them, would you see MAN CLOSE green annunciation light?
1 comments:
Mr. Anderson
February 27, 2025
No, the MAN TIES CLOSE annunciator activates only when the generator bus tie relays are manually closed using the switch. If both generators are online and operating normally, the bus ties close automatically, and the MAN TIES CLOSE annunciator does not activate.
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Do you have a question about the C90GTi and is the answer not in the manual?
Questions and answers
King Air 350 abnormal checklist: Both Gen Ties Open. You Manually close the Gen Ties with both Generators on line. Why, the next step in the checklist says: MAN TIES CLOSE-ILLUMINATED? They shouldn’t be since both generators are on line.
The "MAN TIES CLOSE" annunciator illuminates when the generator bus tie relays are manually closed, completing a latching circuit. This prevents the automatic closing of the bus ties and activates the annunciator readouts. Even if both generators are online, the manual closure of the Gen Ties switch forces the relays to stay closed, triggering the indication.
This answer is automatically generated
Thank you so much! Joe
Abnormal checklist BOTH GEN TIES OPEN. You manually close them. Next step in checklist: MAN TIES ILLUMINATED. They shouldn’t be since generators are on line. Does that mean ANY time you manually close them regardless of generator status, the MAN CLOSED light illuminates?
Yes, the MAN TIES CLOSE annunciator activates (illuminates) when the generator bus tie relays are manually closed, as long as the latching circuit is completed. However, if a fault opened the tie, the relay cannot be manually closed until the BUS SENSE switch is used to reset it. Therefore, the light does not illuminate if the tie cannot be closed due to a fault.
This answer is automatically generated
When both genties open with both generators on line and you manually close them, would you see MAN CLOSE green annunciation light?
No, the MAN TIES CLOSE annunciator activates only when the generator bus tie relays are manually closed using the switch. If both generators are online and operating normally, the bus ties close automatically, and the MAN TIES CLOSE annunciator does not activate.
This answer is automatically generated