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Voltage regulator 1702.3702-02
General information
Connection diagram
Dimensional drawing
Alternator characteristic


General information:

The voltage regulator 1702.3702-02 has an increased regulation voltage. This modification is designed specifically to comply with the requirements of the energy balance of the car with a large number of consumers and a high level of total energy consumption. It is especially effective in the cold season, when the generator requires increased voltage to charge the battery, and at the same time the requirement for the battery level increases due to the increased load on it during start-up.

The regulator provides an optimal charge mode for modern (“calcium”, etc.) rechargeable batteries that require an increased charge voltage.

Applicability: Cars with carburetor engines VAZ-2108, -09, -10, VAZ-21213 and others with a 37.3701 generator or its modifications.

The output key of the controller is made using MOSFET technology, as a result of which the power losses generated in the form of heat are sharply reduced, the reliability of the controller is increased. Regulator heating relative to ambient temperature is less than 5°С, which made it possible to provide an accurate characteristic of the thermal compensation of the controlled voltage.

Due to usage of the additional wire, voltage on the alternator is maintained directly on the alternator output terminal. Herewith are reached the highest parameters of the current velocity and load characteristics. The temperature compensation function corrects the voltage level of the generator depending on the ambient temperature, increasing the charge voltage at low temperatures, and lowering it in hot weather, which ensures optimal operating conditions of the battery and all consumers of electricity, thereby increasing the reliability of all electrical equipment of the car.

The regulator is produced in climatic modification O2.1 in accordance with GOST 15150 for the domestic market and for export. By the degree of protection against the penetration of foreign bodies and water, the product meets the IP68 design in accordance with GOST 14254. All electrocontact connecting elements of the regulator are made of brass rolling with galvanic cover that guarantees reliability of the electrical connections during all service period. The controller's operating mode is S1 in accordance with GOST 3940.

The regulator is installed directly on the generator, using standard screws, an additional wire is attached to the standard chain screw "30". It is not recommended to install the voltage regulator 1702.3702-02 on the alternators in the automobiles with the electrical circuit that differs from the typical one. A sign of inconsistency with the switching scheme or type of generator is a lack of wire length, possible engine operation after the ignition is turned off. It is also not recommended to use this type of regulator in conjunction with battery of old type or with battery that has low level of voltage.

The warranty period of exploitation is 3 years from the date of commissioning or from the date of sale in retail commercial network. The manufacturer's warranty is valid for 4 years from the date of manufacture of the product. The date of production is printed on the body of the product.



Range of operating temperatures, °С
-45 .. +100
  Regulating voltage with battery at t°=(25 ± 2) °С and load of alternator 3А, V
14,7 ± 0,1
  Regulating voltage with battery at t°=(25 ± 2) °С in range of alternator load from 3A to 0,9·Imax**, V
14,7 ± 0,15
  Maximum current of output circuit, А
  Thermal compensation of regulating voltage, mV/°С
-4,5 ± 1,5
  Residual voltage on output "DF", not more, V
  Maximum allowable long-term influence of increased supply voltage, V
  Maximum allowable influence of increased supply voltage up to 5 min., V
  Maximum allowable pulse overvoltages in accordance with GOST 28751, V
** - According to the technical conditions on the item  

Connection diagram:

Connection diagram of the voltage regulator 1702.3702-02

Dimensional drawing:

Dimensional drawing of the voltage regulator 1702.3702-02

Alternator characteristic:

ТСХ генератора
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