ОGeneral information:

Multifunctional voltage regulators 9333.3702-24, 9333.3702-25, 9333.3702-25 ver.12 are intended 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 environmental temperature.

Applicability: MAZ automobiles with engines JAMZ-656, JAMZ-658, JAMZ-530, JAMZ-7511, with alternators А125/24/-28V-90А, 3252.3771, 3252.3771-10, 3252.3771-50, 3272.3771, 4242.3771, 4242-03.3771.

Voltage regulators 9333.3702-24, 9333.3702-25, 9333.3702-25 ver.12 perform the function of indication of the reduced/increased voltage of the onboard vehicle network and the alternator's low phase voltage. The indication is carried out by glowing of the indicator lamp controlling the battery charge. The items ensure the fulfillment of a function of fading in current load. Voltage regulators also perform the function of protection against short-circuit in the output and indicator circuit.

The voltage control and regulation are performed directly on the alternator’s output terminal - all power supply diagrams of modern foreign automobiles of high class are built on the basis of this principle. Alternator startup control and control of its shaft rotation frequency are performed directly on one of the output power windings. The interference suppression capacitor is a part of the regulator.

Regulators are produced in a single climatic design О2.1 in accordance with GOST 15150 for internal market and for export. The items meet design IP67 in accordance with GOST 14254 by protection degree against penetration of foreign bodies and water. An operating mode of the regulator is S1 in accordance with GOST 3940.

The regulators are mounted directly on the alternator where the installation of regulators 9333.3702-24, 9333.3702-25, 9333.3702-25 ver.12 with the help of standard screws is stipulated. The installation of regulators of the given types instead of the voltage regulators 3252.3702, 7941.3702В3 is possible with disassembly of the interference suppression capacitor.

The warranty period is 3 years from the date of commissioning or from the date of sale in retail store network. The warranty obligations of the manufacturer are valid during 4 years from the date of the item production. The date of production is marked on the case of the item.

Specifications:

9333.3702-24 9333.3702-25 9333.3702-25 ver.12   Range of operating temperatures, °С -45 .. +110   Regulating voltage with battery at t°=(25 ± 2) °С and load of alternator 5А, V 28,8 ± 0,3 28,6 ± 0,3   Regulating voltage with battery at t°=(25 ± 2) °С in range of alternator load from 3A to 0,9·Imax*, В 28,3 .. 28,8 28,1 .. 28,6   Maximum current of output circuit, А 5,0 / 8,0   Thermal compensation of regulating voltage Ureg, mV/°С -10,0 ± 2,0   Residual voltage on output "DF": maximal / typical, V 0,24 / 0,2   Threshold of indication actuation of low phase voltage, V 7,0 .. 17,0   Threshold of indication actuation of lower voltage, V 21,8 .. 23,2   Threshold of indication actuation of increased voltage, V 31,3 .. 32,7   Function of the accelerated current dump of the field winding (for alternators with increased current output) - + +   Maximum allowable long-term influence of increased supply voltage, V 36,0   Maximum allowable influence of increased supply voltage up to 5 min., V 50,0   Maximum allowable pulse overvoltages in accordance with GOST 28751, V 200,0

Connection diagram:

Dimensional drawing: