AEROPRAKT A32-103-POH, Pilot Operating Handbook

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AEROPRAKT-32 Pilot Operating Handbook A32-103-POH
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7.10 Electrical system
Electrical system of A-32 serves for generation of electrical power and supplying it to the
onboard electrical consumers.
When engine is running (at RPM above 1400), electrical power is generated by the engine
alternator, converted by a rectifier-regulator (located on the firewall) and is supplied to the
consumers and stored in a 12V DC 18Ah battery, located behind the left pilot seat. The
consumers (engine starter, instruments, lights, etc.) are supplied with the electrical power
through the electrical cables of appropriate section (depending on the consumed current),
switches and fuses (located on the instrument panel). The fuses are required to protect the
electrical system and consumers from short circuit and must be of appropriate type and
size.
When battery is supplying power to the consumers while alternator is not generating and
supplying power to the battery (e.g. engine is not running or due to some other reason)
NO CHARGE light signals that the battery is discharging and its power may be lost after
some time. When alternator starts recharging the battery NO CHARGE light goes out.
MASTER switch controls power supplies of all onboard consumers (except for the engine
ignition system and consumers with their own built-in power source, e.g. GPS) together
with the electrical switches for separate consumers. The engine ignition system may be
switched ON/OFF only with the ignition switches.
Electrical system wiring depends on the electrical equipment/instruments installed in the
aircraft and therefore has main and additional (optional) portions. The respective wiring
diagrams
are shown on Fig. 15 to Fig. 21 .