- 77 - Workshop Manual LDW CHD _ cod. 1.5302.345 - 6° ed_rev. 05
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Alternator type Iskra, type AAK3570 28V 35A (for 24 V out-
ts)
Characteristics:
Rated voltage ................................................. 28V
Rated current .................................................. 35A
Speed of the load starting point ...................... 1140 rpm
Maximum permanent
intermittent speed (max. 15') .......................... 13000 -15000 rpm
Front bearing .................................................. 6303 - 2RS - C3
Rear bearing ................................................... 6201 - 2RS - C3
Max. force on the bearing .............................. 600 N
Voltage regulator ............................................ AER 1528
RH direction of rotation.
Tighten the nut 1 to 60 ÷ 70 Nm.
Note: Lube the two bearings with high temperature grease.
The alternator has a W terminal for a speed indicator.
Characteristic voltage curve for regulator type AER 1528
The electronic voltage regulator is built into the alternator.
The curve changes depending on temperature.
A = Max. voltage curve
B = Min. voltage curve
Characteristic curves for alternator type AAK3570 28V 35A
(for24Voutts)
The curves have been detected with electronic voltage regulator
after thermal stabilization at 23 ± 5°C;test voltage 13 V.
I = Current in Ampere
Note: The alternator rpm is equal to the rpm shown in the table
multiplied by 1000.
Ratio between engine/alternator rpm = 1:1.8.
Electric system
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