Hawker Beechcraft Hawker 800XP, Руководство по эксплуатации для пилотов

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Revision A4: Sep, 2010
Section III Sub-section 9
ELECTRICAL POWER
Pilot’s Operating Manual
ENGINE START USING BATTERY POWER (Figure 5)
Selecting the BATT switch to ON energizes PE busbar and makes the battery power available at the
internal start contactor. Operation of the START PWR energizes the internal start contactors which
connect both batteries to the start busbar and brings the system to a state of readiness for ENGINE
START.
When the START PWR switch is operated the integral PWR ON PUSH FOR ABORT annunciator
illuminates and the generator fed busbars and both batteries are connected to the start busbar.
Pushing either ENGINE START switch (ENG 1 or 2) illuminates the OPERATING annunciator and
busbars PS1 and PS2, with the generator, will be disconnected from the start busbar. The engine starter
is then energized from the batteries.
WITH A GENERATOR ON LINE
With a main engine or APU generator on-line, and the BUS TIE closed, the generator and both batteries
will be connected to busbars PS1, PS2 and PE.
DC POWER GENERATION
Two 28 VDC starter/generators, one driven from each engine, serve as the primary source of power for
the airplane. The generators are self-exciting and each produce a rated power output of 9 kW when the
engine reaches self-sustaining speed. A third starter/generator, driven from the APU (if installed) is also
available. The output voltage of each generator is stabilized by an associated generator control unit
(GCU). The GCUs provide load equalization when the generator outputs are paralleled.
For engine starting, the generator operates as a starter motor powered by a 28 VDC ground supply, or
by the airplane main batteries connected in parallel. At starter cut-off, the generator control unit (GCU)
voltage regulator assumes control of the starter/generator field. Provided the quality of generator output
is satisfactory, an output from the GCU will close the generator line contactor (GLC) connecting the
generator to its associated busbar (PS1 or PS2). When the GLC closes, the related GEN FAIL
annunciator extinguishes.
NOTES:
1. Closure of the GLC is inhibited when busbar voltage is higher than generated voltage
and when EXT POWER is ON.
2. Should the generator have been previously tripped manually, it will require to be
manually reset.
ENGINE START
START
PWR ENG 1 ENG 2
OPERATING
OPERATING
Overhead Roof Panel
PWR ON
PUSH FOR
ABORT