Calidus
SYSTEM DESCRIPTION
AutoGyro_POH_Calidus Revision 4.0 – Issue Date 17.JAN.2019 7-17
7.11 Electrical System
The 12V DC electrical system consists of an engine driven electrical generator, a battery,
master switch, indicators, switches, electrical consumers, and cabling. With the ROTAX 914
UL engine an electrical power supply is vital for continued engine operation as this engine
variant solely relies on electrically driven fuel pumps.
An additional externally mounted 40A generator (Gen2) is available.
Turning the master switch to the ON position closes the battery contact and energizes the
gyroplane’s electrical system. The red LOW VOLT warning light will illuminate briefly as a
functional check. A steady indication, however, warns the pilot that the voltage of the
system has dropped below a safe value. In this case a safety circuit (load shedding relay)
will automatically disable the aircraft lights and the 12V power receptacle. The lamp may
remain illuminated until sufficient voltage exists, and may be until after engine start.
A red GEN warning light is installed to indicate that the battery is not being charged.
The power consumption of individual equipment is listed in the following table:
Generator (-) 240 W
Electrical fuel pump 21 W
Pneumatic compressor 124 W (peak) / 103 W
Engine cooling fan 194 W (peak) / 97 W
Strobe lights 28 W
NAV lights (LED) 9 W
Landing light (LED) 7 W
Radio ATR500 2 W (rcv) / 35 W (xmt)
Radio ATR833 7 W (rcv ) / 35 W (xmt)
ATC Transponder TRT800H max. 10 W
Garmin 695 / 795 40 W
Flymap F7 / Sky-Map T7 5 W
Flymap L 35 W
Flymap L (dual screen) 70 W
Flymap XL 45 W
WARNING
High electrical load in flight with low engine rpm may reduce the ability of the
charging circuit to replenish the battery, thereby reducing the battery reserve in
the event of a charging circuit failure. Illumination of the LOW VOLT warning
lamp lights demonstrates that the electrical system voltage has dropped below
12v, and, provided the charging circuit is working, that the electrical demand
has exceeded supply. If lit, or intermittently lit, either reduce the electrical load
or increase generator circuit output by increasing the engine rpm, as safe or
appropriate to do, such that the lamp remains off.’
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