Generator Type R 115-140/24-1600; Bench Testing The Generator; Sectional View Of Generator Type R 115-140/24-1600; Wiring Diagram For Testing The Generator As A Motor - Fiat 411 R Service Manual

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GENERATOR TYPE R 115-140;'24-1600 Var. 2
Specifications. '?jd:1LE'~f; 7;/'W7 éffififjd 1'00."-*1 fin)
Fiat generator type R 115- 146,!24- T660 Var. 2 (see fig. 128) having the foiiowing specgifications. has been
mounted up to engine No. 005644; it has than been repiaced by generator type D(3115_/24,f?;'3 C.
Maximum continuous output (24 V) . . . . . . . . . . . . . . . . . . . . . . , 'HG W
Maximum continuous current output (Ampére—fimitaf:ion at 28 V) . . . . . . . . . 4,75-5,25 A
Speed at maximum continuous current ouiput, at 24 V and 20° C (68° F} . . . . . 1400-1880 R.P.M.
Maximum continuous speed . . . . . . . . . . . . . . . . . . . . . . . . . . . 4000 R.P.M.
Excitation . . . . . . . . . . . . . . . . ' . . . . . . . . . . . . . . . . . shunt
Direction of rotation, as viewed from driving side . . . . . . . . . cfockwise
Reguiator group type . 1 ". . . . . . . . . . . . . . . , . . . . . . . . . A53-14-0j24
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Fig. 128. - Seciional View of generator iype R115-'§48,"24-1EDO Var. 2.
L Radial brushes - 2. Fieid coiisr - 3. Pole shoefasiening screw - é. Pole shoe A 5. Driving side support » 6. Frame ~ T. Armature -
8. Comrnutatcr ~ 9. Lubrication wick - 10. Lubrication chamber -_11. Field coii terminal.
Bench testing the generator.
Test generator efficiency, according the checks Jisted hereafter:
Generator shoufd aiways function coupled with regulator type A/3-'14€!,f24.
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Generator tested as a motor.
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Fig. 129. - Wiring diagram for testing the generaior as
a motor.
G. Generator ~ V. Voitmeter, 30 V ,€op reading - A- Amrneter,
top reading. (B?-1?9='5' should suppiy slightiy more than 2:1 V,
V as current is TA).
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The arrangement consists in connecting fermfnais
67 and 51. shoré cfrcuifed, as shown in Fig. 129.
Generator shaif be fed as an electrical motor aé 24 V.
Check that afasorbed current, under such a voltage,
is 3-5,5 A at 9504150 R.P.M.
As test is finished, immediately disconnect terminals
57' and 57 (short circu/Ted), to avoid damaging the
fieid coils as generator speeds up.
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