Saab SONETT III Service Manual page 52

Designation
The Bosch type designation of the alternator is
K14
14V 35 A 20
The meaning of this designation is explained below.
K
14
14V 35A 20
4141
1r,Ami-inor
1859
TERMINAL END OF THE ALTERNATOR
X 100 = 2000 rev/min
(output speed at
2/3 max. current)
Maximum current
Maximum voltage
Sense of rotation
Construction 1)
Diameter of pole
housing
1) Construction: 1 = One coli and several poles
Terminal clamps
2 = One coli per pole
3 = Without slip rings
D+
Exciter diode output, terminal for regulator D+
DF
Terminal to exciter winding and for regulator DF
B+ Battery connection
The indicator light is wired to D+ on the voltage regula-
tor. Connection to D— on the regulator is by a wire in
the tripole joint housing.
Description — interna! wiring
The 12 volt alternator is internally ventilated. It has a 12-
pole rotor and six silicon diode rectifiers. An exciter diode
is connected to each of the three stator wind ings, with a
common grouping point at terminal D+. The six rectifier
diodes are arranged and wired in an AC bridge, i.e. three
diodes are wired for normal polarity (anode to the ter-
minal) and the other three for reverse polarity (anode to
the casing). According to polarity, the diode holder is
insulated from the body or directly grounded by a body
contact. The holder for the exciter diodes is insulated
and located below the holder for the three diodes of
normal polarity.
The stator winding is star soupled (see wiring diagram).
The annular exciter winding is mounted on the rotor,
which has pole claws, one half of the claw acting as a
north pole and the other as a south pole. The ends of
the exciter winding are connected to slip rings which
transmit the exciter current.
Nov. 1972
321-2
SAAB