Voltage regulator JA112A1

General information:

The voltage regulator JA112A1 (Я112А1) is purposed for voltage maintenance of onboard vehicle network in predetermined limits in all system operation modes of electrical equipment at change of the rotation frequency of the alternator rotor, electrical load and environment temperature

Applicability: automobiles AZLK, ZIL, IG, LAZ, LiAZ, PAZ, RAF, “Tavria” 1991-1996 years of manufacture and others with the alternators 17.3701, 29.3701, 58.3701, 66.3701, G287 and their modificatons.

The given item is developed specially for exploitation in various latitudes with a large range of environment temperature. The regulator is produced in a single climatic design O2.1 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 EN 60529. Against moisture penetration the regulator is protected by special high-heat-conducting compound with an operating temperature up to 200°C. The regulator JA112A1 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 DSTU GOST 3940.

The regulator is mounted in the brush unit of the alternator where the setting of regulators JA112A or JA112A1 with the help of standard screws is stipulated.

The warranty period of exploitation is 3 years from the date of commissioning or from the date of sale in retail commercial network. The warranty obligations of the manufacturer are valid during four years from the date of the item production. The date of production is marked on the case of the item housing.

Technical data:

Range of operating temperatures
from -40°C to +100°C
Regulating voltage with at t°=(25 ± 2)°C and load of alternator 3 A
14,0 ± 0,1 V
Regulating voltage with at t°=(25 ± 2)°C in range of alternator load from 3 A to 0,9 ·
14,0 ± 0,2 V
Maximum current of output circuit
5 A
Thermal compensation of regulating voltage Ureg
-3,0 ± 1,5 mV/°C
Residual voltage on output "Ш" ("DF"), typical
0,12 V
Maximum allowable long-term influence of increased power supply voltage
18 V
Maximum allowable influence of increased power supply voltage up to 5 min.
25 V
Maximum allowable pulse overvoltages in accordance with GOST 28751
no more than 120 A

Connection diagram in the alternator set:

Dimensional drawing:

Dimensional drawing of voltage regulator JA112A1
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