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General information:
The voltage regulator JA112B is purposed for voltage maintenance of the onboard vehicle network
of the tractor in predetermined limits in all system operation modes of electrical equipment at
change of the rotation frequence of the alternator rotor, electrical load and environment
temperature.
The regulator is produced in a single climatic design О2.1 in accordance with GOST 15150 for
internal market and for export. On extent of protection against penetration of foreign bodies
and water, the item meets design IP68 in accordance with GOST 14254. Against moisture
penetration the regulator is protected by special high-heat-conducting compound with an
operating temperature up to 200 °С. Serviceability and correspondence of item parameters are
saved even at plunging of the regulator to water under condition of protection of demountable
joints. The regulator JA112B is designed on a single-wire power circuit; the item housing is
connected to the vehicle housing. An operating mode of the regulator is S1 in accordance with
GOST 3940.
Applicability: tractors TDT -55, DT-75C, T-16M, T-25AZ, Т-30A, MTZ with the alternator
46.3701 and others.
The regulator is mounted in the brush unit of the alternator where the setting of
regulators JA112B or JA112B1 with the help of standard screws is stipulated.
Specifications:
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Range of operating temperatures,
°С |
|
-45 .. +100
|
| |
Nominal regulating voltage, V |
14,0
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| |
Regulating voltage
with battery at t°=(25 ± 2) °С and load of alternator
3А: mode "Winter", V |
14,0 ± 0,15
|
| Regulating voltage
with battery at t°=(25 ± 2) °С and load of alternator
3А: mode "Summer", V |
13,8± 0,1
|
| |
Regulating voltage
with battery at t°=(25 ± 2) °С in range of alternator
load from 3A to
Imax*
:
mode "Winter", V |
14,0 ± 0,2
|
| Regulating voltage
with battery at t°=(25 ± 2) °С in range of alternator
load from 3A to
Imax*
:
mode "Summer", V |
13,8± 0,2
|
| |
Maximum current of output circuit,
А |
5,0
|
| |
Thermal compensation of regulating
voltage, mV/°С |
-3,0 ± 1,5
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| |
Residual voltage on output "Ш", not
more, V |
1,0
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- typical, V |
0,75
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| |
Maximum allowable long-term influence
of increased supply voltage, V |
18,0
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Maximum allowable influence of increased
supply voltage up to 5 min., V |
25,0
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Maximum allowable pulse overvoltages
in accordance with GOST 28751, V |
120,0
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Connection diagram:
1 - alternator;
2 - switch of an operation mode "summer / winter";
3 - voltage regulator;
4 - field winding; |
5 - ignition lock contacts;
6 - stator winding;
7 - rectifier unit;
8 - capacitor;
9 - battery. |
Dimensional drawing:
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General information
