Effectivity: 914 Series
Edition 2 / Rev. 0
d04282
page 113
July 01/2008
BRP-Rotax
INSTALLATION MANUAL
Requirements for flawless operation of the rectifier-regulator
- body of regulator must be grounded with no resistance allowed
- the rectifier-regulator has to be protected by a slow blowing 25A fuse.
- wire size of the main circuit of at least 2,5 mm
2
(14 AWG)
- a capacitor (Fig. 69 Pos. (25)) of at least 22 000 µF / 25 V is necessary
to protect the correct function of regulator and to flatten voltage. The
regulator is not designed to store any electrical charge. If for any reason
the battery or bus system is disconnected from the regulator while the
engine is running (i.e. the master switch is shut off) the capacitor will
safely absorb and dissipate the electrical charge produced by the
generator. Otherwise the regulator would be damaged.
■ CAUTION: The voltage difference between battery and terminal C of
regulator should be less than 0,2 V.
Use cables in this area as short as possible and with
adequate cross section.
■ CAUTION: Never sever connection between terminal C and +B of
regulator (e.g. by removal of a fuse) while the engine is
running. Overvoltage and regulator damage can occur.
During engine stop break circuit between battery and
terminal C to avoid discharge of battery! (see Fig. 69)
◆ NOTE: A charge-indicating lamp 3W/12V (Fig. 69, pos. (36) may
be fitted on the instrument panel.
Current:
■ CAUTION: The graph current over engine speed has been determined
and is valid only at the following conditions.
ambient temperature:....... 20 °C (68 °F)
voltage: ............................ permanent 13,5 V
tolerance: ......................... max ± 5%
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