The voltage regulator JA120M1 (Я120М1) 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: MAZ, KAMAZ and others with alternators G273, 21.3771 and their modifications.
This product is designed specifically for operation in different latitudes with a wide range of ambient temperatures, also including in tropical conditions.
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 JA120M1 is designed on a single-wire power circuit; the case of the item 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 is stipulated the setting of regulators JA120M or JA120M1 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.
|Range of operating temperatures||
from -40°C to +100°C
|Regulating voltage with t°=(25 ± 2)°C and load of alternator 3 A: mode "Winter"at||
28,0 ± 0,3 V
|Regulating voltage with t°=(25 ± 2)°C and load of alternator 3 A: mode "Summer"at||
27,6 ± 0,2 V
|Regulating voltage within range of alternator load from 3 A to 0,9 · : mode "Winter"||
28,0 ± 0,4 V
|Regulating voltage within range of alternator load from 3 A to 0,9 · : mode "Summer"||
27,6 ± 0,4 V
|Maximum current of output circuit||
|Thermal compensation of regulating voltage Ureg||
-6,0 ± 3,0 mV/°C
|Residual voltage on output "Ш" ("DF"), typical||
|Maximum allowable long-term influence of increased power supply voltage||
|Maximum allowable influence of increased power supply voltage up to 5 min.||
|Maximum allowable pulse overvoltages in accordance with GOST 28751, as part of the alternator||
Connection diagram in alternator set: