Battery - Rotax 915 iSc 3 A Installation Manual

When the engine is running or when the engine is turned off ( and the Fusebox is not sup-
plied with external power), the EMS circuit works isolated from the rest of the aircraft.
Therefore following components need to be installed decoupled from the airframe ground:
• ECU
• Regulator A (Fusebox)
• Starter relay
The engine block must be connected to the airframe using a properly sized ground strap
(minimum the same cable cross section as the starter supply but at least 10 mm
rying the starter current and to avoid static electricity between the engine and the
airframe.
To gain full lighting compliance the shock mounts must be shorted-out by using ground
straps (10 mm

BATTERY

used in combination with a suitable battery management system. If such an bat-
tery is used, the responsibility is up to the aircraft manufacturer. The approval of
the relevant aeronautical authority may be necessary. For installation of lithium-
The specification of the battery must ensure that during each operating state and also dur-
ing the transition between two operation states a sufficient supply of the avionics is guar-
anteed (e.g. during engine start). Depending on the applicable regulations avionics need
to be supplied for at least 30 minutes with energy after a failure of the primary power sup-
ply in case they are required for safe operation of the aircraft.
If the aircraft is regularly started at temperatures below - 5 °C (23 °F) (ambient- and oil/
coolant temperature are below this temperature) it is recommended to provide a connec-
tion for an external power supply and a possibility for adequate engine pre-heating.
Following battery specifications are recommended:
Nominal Input
Voltage
Internal resistance
Effectivity: 915 i A Series
Edition 0/Rev. 0
INSTALLATION MANUAL
2 ).
The use of rechargeable batteries with lithium–ion technology should only be
ion batteries refer e.g. to FAA AC No: 20-184
If all consumers are active, take care not to discharge the battery deeply.
Interface
Parameter
BRP-Rotax
ATTENTION
ATTENTION
Min.
maximal 10 mΩ at
-18 °C (-0.4 °F)
2 ), for car-
Max. Nominal
12 V
24–00–00
December 01 2017
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