NOTE: This system is not FAA
approved.
It is intended for installation
in Experimental category aircraft only.
Uses solid state
resetable PTC current limiters (Poly fuses).
Weighs only 13 oz. complete
with mounting bracket.
Uses no panel space except
for a test switch with light.
Can control up to 19
separate circuits.
Provides instantly alerting
voice warnings heard in the pilots headset and through the built
in speaker whenever a circuit trips.
Low cost and easy to
install.
The P/N 2075 Power Buss is an electronic
device designed to control and monitor the electrical circuits
in an aircraft. The device employs solid state PTC current
limiting fuse devices that automatically remove power from a
circuit if it becomes overloaded. Just like conventional circuit
breakers, a tripped circuit can be reset by turning off
the device for a few seconds, then turning it back on. If a
circuit trips due to overload, the pilot will instantly hear a
distinctive voice message in his headset, and through the built
in speaker. The voice warning will continue until the pilot
pushes the panel mounted switch, with built in light, stopping
the voice and turning on the built in red light. This provides a
visual indication of the tripped circuit. The red light remains
illuminated as long as the fault exists. The pilot can check the
system at any time by pushing the switch. This performs a self
test of the system. If any circuits have tripped, the pilot will
hear the voice messages indicating what circuit has tripped. If
no circuits are tripped, the pilot will hear the voice message
"TEST OK". Connections to the power buss are made by using quick
connect terminals. The power buss can be mounted anywhere behind
the panel. the combination switch/light should be mounted in the
panel, within the pilots normal scan. A separate buss is
provided for the avionics. The avionics buss can be turned off
whenever the engine starter is engaged. A separate master switch
mounted close to the battery is required, as well as circuit
breakers for the generator and devices drawing more than
11 amps. Not all circuits need to be used.
The Power Buss is designed for 12volt systems
only. Maximum current on the board is 30 amps. Maximum current
on any one circuit is 11 amps. The audio output is designed to
connect to an unswitched input in an audio panel or a radio.
STANDARD POWER BUSS CIRCUITS
Circuit Fuse
Value Voice
Message
Regulator circuit
5 amp
Regulator
Trim circuit
5 amps
Trim
Fuel Pump
7 amps
Fuel Pump
Heater
5 amps
Heater
Flaps
7 amps
Flaps
Nav lights
7 amps
Nav lights
Landing Light
11 amps
Landing lights
Strobe lights
7 amps
Strobes
Instrument lights
3 amps
Panel lights
Bilge Pump
3 amps
Bilge Pump
Buss for undefined items
5 amps
Buss one
Buss for undefined
items
11 amps
Buss two
Devices on switched avionics buss
GPS
5 amps
GPS
Intercom
3 amps
Intercom
Transponder
3 amps
Transponder
Radio
5 amps
Radio
Gear warning system
3 amps
Gear alert
Auxilary items
5 amps
Aux buss
Note: All circuits do not have to be used. Fuse values are
subject to change, consult with factory for values.
