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General information:
The multifunctional voltage regulator 3252.3702 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.
Applicability: automobiles MAZ (Euro-3) with the engine JAMZ-656, JAMZ-658 and others
with the alternator 3252.3771.
Additional diodes in the rectifier unit are absent, the control of alternator’s start-up
and control of its rotation frequency is made directly on one of the output power control
windings.
The voltage regulator 3252.3702 has a function of indication of the on-board network
reduced/increased voltage and the alternator's low phase voltage. The indication is
realized by glowing of the indicator lamp controlling the battery loading on the
instrument cluster. The item ensures the fulfilment of a function of fading in current
load. The voltage regulator 3252.3702 realizes also a function of protection against
short-circuit in the output and indicator circuit.
The regulator is produced in a single climatic design О2.1 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 GOST 14254. An operating
mode of the regulator is S1 in accordance with GOST 3940.
The item is mounted directly on the alternator, where the setting of regulators 3252.3702 or
7941.3702V3 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 4 years from the date of the item production. The date of production is marked
on the case of the item.
Specifications:
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Range of operating temperatures, °С |
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-40 ..
+100
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Regulating voltage with battery at t°=(25 ± 2)
°С and load of alternator 5А, V |
28,4 ±
0,2
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Regulating voltage with battery at t°=(25 ± 2)
°С in range of alternator load from 3A to 0,9·Imax*, V |
28,4 ±
0,3
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Maximum current of output circuit, A |
5,0
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Thermal compensation of regulating voltage,
mV/°С |
-9,0 ±
3,0
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Residual voltage on output "DF": at the
current of field winding 4A maximal / typical, V |
0,24 / 0,2
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Threshold of indication actuation of low
phase voltage, V |
7..17
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Threshold of indication actuation of low phase
voltage, V |
21,8..23.2
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Threshold of indication actuation of increased
voltage, V |
31,3..32,7
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Maximum allowable long-term influence of
increased supply voltage, V |
36,0
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Maximum allowable influence of increased
supply voltage up to 5 min., V |
50,0
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Maximum allowable pulse overvoltages in
accordance with GOST 28751, V |
200,0
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Connection diagram:
Dimensional drawing:
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General information
