Belarus 1523, Operating Manual

Page: 71 / 312

BELARUS-1523/1523 В /1523.3 /1523В.3 Construction and Operation
69
The electric equipment aggregates in-
stalled on the engine, include the alterna-
tor with the capacity of 1150 W (for the
engine Д -260.1) and 2000 W (for the en-
gine Д -260.1S2) and voltage of 14 V.
AAN 5506 alternator manufactured by
the Iskra company. This type belongs to
up-to-date brush-type compact genera-
tors with increased capacity.
The main features of the alternator are:
- Existence of the rotating field windings
and, respectively, brushes that makes it
possible to increase the alternator output
power;
- Necessity of current inflow into the field
winding prior to starting the engine (as a
rule, the brush-type alternators have no
self-excitation feature).
For current inflow into the alternator field
winding, there is an additional resistor on
the tractor (in the relay box on the en-
gine).
Prior to starting the engine, the voltage
from the starter and instrumentation is
applied to the terminal “Д” of the altern a-
tor through the resistor and then to the
field winding (these elements are con-
nected in parallel). When it will be done,
the voltage at the terminal “ Д ” will be ap-
proximately 0.8-0.9 V. After starting the
engine, the field winding starts rotating
and the voltage regulator comes into op-
eration to provide the output voltage of
the alternator within the range 13.8-15 V.
ATTENTION! To avoid the damage of
the regulator relay, it is prohibited to
check the serviceability of the alternator
by removing the SB terminals or setting
the battery disconnect switch to the OFF
position when the diesel is running!
The Engine Starting Device is an elec-
tric starter with the voltage of 24 V and
capacity of 5.5 kW.
The starter is a DC series-excitation
electric motor. The starter is energized
remotely, by means of an electromag-
netic relay and starter switch. To facili-
tate the starting of the engine at low am-
bient temperatures, the remotely-
controlled glow plugs installed in the cyl-
inder heads are used.