d04920.fm
INSTALLATION MANUAL
BRP-Powertrain
Effectivity: 912 Series
Edition 2/Rev. 0
24-00-00
page 7
August 01/2012
2.2.1) Requirements for flawless operation of the rectifier-regulator
General note
NOTE: A charge-indicating lamp 3 W/12 V (see Fig. 11 pos. 18)
may be fitted on the instrument panel.
Body of regula-
tor
Body of regulator must be grounded with no restance allowed.
Fuse The rectifier-regulator has to be protected by a slow blowing 25 A fuse.
Wire size Wire size of the main circuit of at least 2.5 mm
2
(14 AWG).
Capacitor A capacitor (see Fig. 11 pos. 14) of at least 22000 µF/25 V is necessary to
protect the correct function of regulator and to flatten voltage. The regula-
tor is not designed to store any electrical charge. If for any reason the bat-
tery 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.
Amperage
- Ambient temperature: 20 °C (68 °F)
- Voltage: permanent 13.5 V
- Tolerance: max ± 5 %
S
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.
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. 11).
The graph current over engine speed has been deter-
mined and is valid only at the following conditions:
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