Multifunctional voltage regulator 9444.3702

General information

The multifunctional voltage regulator 9444.3702 is purposed for voltage maintenance of the 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.

Application: automobiles VAZ-2110, VAZ-2111, VAZ-2112 with an alternator 9402.3701-03, VAZ-2123 “Chevrolet Niva” with an alternator 9402.3701-04 and others.

Multifunctional voltage regulator 9444.3702 ensure complete switching-off of the alternator’s field winding from the onboard network, thus increasing the reliability and safety of the vehicle power-supply system.

Voltage control and regulation are carried out directly at the output terminal of the alternator (all power supply circuits of modern high-class cars are built based on this principle). There are no additional diodes in the switching circuit as part of the alternator set; the control of the alternator start-up, as well as the control of its rotational speed, is carried out directly on one of the output power windings.

The regulator 9444.3702 has a reduced and increased voltage indication function of on-board automobile network and also alternator's low phase voltage. The increased voltage indication is realized by flashing and other modes realization by glowing of the indicator lamp controlling the battery loading on the instrument cluster. The multifunctional voltage 9444.3702 has the protection function against short circuit in the output and indicator circuit.

The regulator is produced in a single climatic design O2.1 in accordance with GOST 15150 for internal market and for export. On protection degree against penetration of foreign bodies and water, the item meets design IP67 in accordance with EN 60529. An operating mode of the regulator is S1 in accordance with DSTU GOST 3940.

The regulator is mounted directly on the alternator, where is stipulated the setting of regulators 7931.3702I4, 844.3702, 845.3702, 9444.3702, 7931.3702-01 with the help of standard screws.

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 -45°C to +110°C
Regulating voltage with at t°=(25 ± 2)°C and load of alternator 5 A
14,5 ± 0,1 V
Regulating voltage with at t°=(25 ± 2)°C in range of alternator load from 5 A to 0,9 ·
14,5 ± 0,15 V
Maximum current of output circuit
5 A
Thermal compensation of regulating voltage Ureg
-6,0 ± 3,0 mV/°C
Residual voltage on output "Ш" ("DF"): maximal / typical
0,08 / 0,07 V
Threshold of indication actuation of low phase voltage
3,75 - 7,25 V
Threshold of indication actuation of lower voltage
10,9 - 11,6 V
Threshold of indication actuation of increased voltage
16,15 - 17,15 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 as part of alternator
200 V

Connection diagram in the alternator set:

Dimensional drawing:

Dimensional drawing of voltage regulator 9444.3702

Circuit diagram:

Circuit diagram of voltage regulator 9444.3702

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