CHAPTER 24
PAGE 7
PAGE DATE: 21. March 2014
MAINTENANCE MANUAL EXTRA 300LT
24-30-00 DC-GENERATION
(Refer to Figure 2) Power for the electrical system is
provided by the battery and/or the alternator.
An ammeter is installed into the system to provide an
indication of current flow from (discharge current, negative
values) or to (charge current, positive values) the battery.
The respective shunt (6, Figure 1) is installed on the left side
of the firewall (Sheet 1 up to SN LT004) respectively on the
electrical main board (Sheet 2, from SN LT005).
Note When external power is used the ammeter indicates the
current flow from the battery to the electrical system
(positive value) but not the battery charge current flow.
The complete electrical system can be cut off by switching
off both the BATTERY and ALTERNATOR switch.
24-30-10 Battery System
The battery is used for starting the engine and powering the
electrical system when alternator power is not available
(engine not running). The battery also powers the electrical
system in case of alternator failure.
Up to SN LT004 and for SN LT009 and LT010 the battery
system consists of the battery (8, Figure 1, Sheet 1), the
battery relay (7), a 60 A fuse (5), the battery switch and the
associated wiring. The battery is located in the middle of the
fuselage just behind the firewall; the battery relay and the
fuse at the lower left cockpit side of the firewall.
From SN LT005 (except SN LT009 and LT010) the battery
system consists of the battery , the battery relay (7, Figure 1,
Sheet 2), a 80 A fuse (5), the battery switch and the associated
wiring. The battery is now located on the left side of the
fuselage just behind the firewall; the battery relay and the
fuse are parts of the electrical main board.
The BATTERY switch (all SN) is located on the left side of
the rear cockpit. The toggle type BATTERY switch features
a red cap.
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