Forward Overhead Panel 700/800/900
| Display Selector |
| Ground Power and Bus Switching Panel with associated APU Lights and Indicators |
| Click on the control or light for a description of its function. |
| Display Selector |
| Ground Power and Bus Switching Panel with associated APU Lights and Indicators |
BUS TRANSFER Switch
AUTO (guarded position) –
BTBs operate automatically to maintain power to AC transfer
busses from any operating generator or external power.
OFF –
isolates AC Transfer Bus 1 from AC Transfer Bus 2 if one IDG is
supplying power to both AC transfer busses.
AUTO (guarded position) –
BTBs operate automatically to maintain power to AC transfer
busses from any operating generator or external power.
- DC cross tie relay automatically provides normal or isolated
operation as required.
OFF –
isolates AC Transfer Bus 1 from AC Transfer Bus 2 if one IDG is
supplying power to both AC transfer busses.
- DC cross tie relay opens to isolate DC bus 1 from DC bus 2.
