Ground Power Receptacle; Distribution - Daher-Socata TBM 900 Pilot's Information Manual

SECTION 7
DESCRIPTION

GROUND POWER RECEPTACLE

The ground power receptacle allows connection to a ground power unit.
Ground power receptacle connection with main bus bar is controlled through "SOURCE" selector when set to GPU
position, it will be effective when connection conditions are met.
When "SOURCE" selector is set to GPU position, the battery and ground power unit are connected
simultaneously on main bus bar.
Ground power receptacle door opening is indicated by
Before connecting a GPU to the airplane, ensure that the voltage of the GPU is regulated
The amperage output needs to be consistent with the airplane placard in front of
compartment door : GPU shall provide a current limiting function, and current limit shall
Use of a ground power source with voltage in excess of 28.5 volts or current exceeding
current limit indicated on placard may damage the airplane electrical system.

DISTRIBUTION

Airplane electrical systems are connected to "BUS" bars and protected by "pull-off" type circuit breakers located on
R.H. side panel (See Figure 7.8.3). In case of overload of a system, the circuit breaker triggers and switches the
system off.
If a circuit breaker corresponding to a non essential system trips, do not reset in flight.
If a circuit breaker corresponding to an essential system trips:
- allow it to cool for about three minutes, then the circuit breaker may be reengaged (pressed down)
- if the circuit breaker trips again, do not reset.
"BUS 1", "BUS 2", "BUS 3" and "BUS 4" bus bars are directly connected to main bus bar and protected by fuses
located in electrical power system.
The "ESS BUS 1" and "ESS BUS 2" essential bus bars are connected to main bus bar through "ESS BUS TIE"
switch set to NORM position. "ESS BUS TIE" switch is attached to circuit breaker panel ; NORM position is
protected and locked by a cover. Common power supply to both essential bus bars is protected by a fuse (located
in EPS box) and a circuit breaker (located in the front cargo compartment on C2 frame right side), each bar being
individually protected by a circuit breaker.
"BATT BUS" bar is directly connected to the battery ; it is protected by a fuse (located in EPS box) and a circuit
breaker (located in the front cargo compartment on C2 frame left side).
The electrical distribution of bus bars is described in Figure 7.8.2.
Page 7.8.2
"GPU DOOR"
NOTE
between 27.5 Volts and 28.5 Volts.
be set per placard.
Do not use batteries pack as GPU sources.
NOTE
PILOT'S OPERATING HANDBOOK
CAS message appearance.
Edition 0 -- October 31, 2013
Rev. 1