Rotax 912 ULS 3 - 17 Electric System; Requirements on Circuit Wiring

Effectivity: 912 Series
Edition 1 / Rev. 0
d04059
page 107
May 01/2007
BRP-Rotax
INSTALLATION MANUAL
17) Electric system
See Fig. 67.
The engine is supplied with the wiring completed and ready to operate. Only the
following connections to the aircraft have to be established.
- integrated generator
- external rectifier-regulator
- electronic modules
- electric starter
- start relay
- items conditional for operation like circuit breakers, ON-OFF switches, control
lamps, relays, instrumentation and capacitors
Optional extras
- external alternator (as option if the output of the integrated generator is inadequate)
- electric rev counter (accessory)
- consumer (battery)
17.1) Requirements on circuit wiring
■ CAUTION: The connections have to be completed by the aircraft manu-
facturer in accordance to effective certification and wiring
diagram (Fig. 67).
The electromagnetic compatibility (EMC) and electromagnetic
interference (EMI) is greatly affected by the wiring and has to
be checked for each installation.
▲ WARNING: The supply to the various consumers (e.g. battery) has to be
protected adequately by fuses (consult wiring diagram). Using
fuses too large may result in damage to electric equipment.
Under no circumstances route consumers cables (e.g. bat-
tery) side by side with ignition cable. Induction could cause
problems.
■ CAUTION: An excess-voltage protection has to be realized by the aircraft
manufacturer in accordance to effective regulations.
▲ WARNING: The certification to the latest requirements such as FAR or
EASA has to be conducted by the aircraft manufacturer.