Cross Section Of Regulator Group; Regulation Unit Type A/3-149/24 Electric Diagram - Fiat 411 R Service Manual

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Fig. 14-8. - Cross section of regulator group.
(Across circuit breaker).
.74' -v¢~""
1. Fixed contact bracket - 2. Pre-load shim - 3. Hinge spring __ -L"-» 1*' "(-3
(steel) bearing mobiie coniact - 4. Body - 5. Armaiure stop - '-JP '*1-§Q.,.!£=§:i - K; ,
5. Calibration screw — 7. Adjustment spring - L. Thermal la | .
compensation by~metaiJic biade - (a. Up to No. 088917 - 5 I J
b. From No. 088976 up). ~ R. Armature rivet - C. Cuniact ' ' ~ " - —- --~, - =1 7
gap 0.7-0.85 mm (.00275-043334") for armature, fiiied with
rivet R for rivetiess armature, the distance between contacts
is 1.15-1.30 mm (0.0-£52~0.0512").
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The wiring diagram of Fig. 12"? shows the regulator group fuse.
The diagram of Fig. 142 represent 'she characteristics of the poshmodification and the pré-modificatign
groups. Thejunction zones between the two hatched strips, represents the-functional limit beiween voitage
regulator and current reguiator.
important.
1. The regulaiion group type A,"3-14Uf24, should function only with generaior ijrpe R115-14!),/24~16G0 and
type DC 'I'!5,'24,!?,!3 and derived.
The group shaii never be used with a third brush generator even if of size corresponding to the
generator prescribed above; the elimination oi the third brush would not change things; even worse
it wouid be to connect a third brush generator as if it were controlled by a reguiation unit.
The reason is that both groups and generator circuits, mainly the fieici coiis of the generator, that
are so reciprocaiiy arranged as to get the best performance for the whole combination.
./'Voltage reguiaior Curran? reguiaiar comer l'E'§i'_1' X
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a) up to group No. 088917, 2)} from group No. 0869i8_
Fig. 14$. - Regulaiion unit type Af3 ~ 148/24 electric diagiflm.
(As group is at resi, with generator running at iow speed the voltage regulator and Curréflf regulaior conracts are cioss-ci whilst
fhose of the circuit breaker are open}.
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