Lombardini CHD series - Iskra Alternator Specifications; Alternator type Iskra, AAK3139 14 V 80 A; Characteristic curves for alternator type Iskra, AAK3139 14 V 80 A; Characteristic voltage curve for regulator type AER 1528

- 75 - Workshop Manual LDW CHD _ cod. 1.5302.345 - 6° ed_rev. 05
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Alternator type Iskra, AAK3139 14V 80A
Characteristics:
Rated voltage ................................................... 14V
Rated current ....................................................80A
Speed of the load starting point ........................1350 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 Iskra, AAK3139
14V 80A
The curves have been detected with electronic voltage regulator
after thermal stabilization at23 ± 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