General information:
The multifunctional voltage regulator 9888.3702 is purposed for voltage maintenance
of the vehicle power 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: high power consumption automotive vehicles (transit and city buses, heavy
vehicles, motorhomes, trucks, etc.) with high power brushless alternators
A203-T1 28V/400A,
A203/01/28V 400A,
А205 28V 400A,
А203/21/28V 400A,
A203/11/28V 400A,
A203/20/28V 330A manufactured by DYNAMO Sliven (Bulgaria), in which transited
voltage suppressors (called also Avalanche, and Zener diodes) are used.
Voltage regulator 9888.3702 provides complete disconnection of the alternator excitation
winding from the power network, which increases the reliability and safety of the power
supply system.
The regulator provides a smooth increase in load current.
Voltage control and regulation are carried out directly at the alternator output
terminal. The regulator has a noise suppression
capacitor.
The multifunctional voltage regulator 9888.3702 is produced in a single climatic design
О2.1 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 IP67 in accordance with GOST 14254. An operating mode of
the
regulator is S1 in accordance with GOST 3940.
The regulator is mounted directly on the generator, where the fastening of 9888.3702 is provided with 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 4 years from the date of the item production. The date of production is marked
on
the case of the item.
Specifications:
 |
Range of operating
temperatures, °С |
 |
between -40 to +85
|
|
Regulation voltage with automotive
battery at
t°=25°С, alternator load 10A and rotation speed 6000 rpm, V
|
28,5 ± 0,2
|
|
Maximum current of output
circuit, А |
10
|
|
Thermal compensation of regulating voltage, Uрег, mV/°С
|
-10 ± 2
|
|
Prolonged
overvoltage, V
|
60
|
|
Maximum allowable impulse
overvoltage when it is composed in the alternator with a duty cycle of not
more than
10%, V
|
|
|
- with a
pulse duration of no more
than 500 ms
- with
a pulse duration of no more than 10 ms
|
72
100
|
|
Maximum current of the
"IGN"
line, mA |
10
|
|
Maximum
total current of the "IGN" and "B +" lines (ignition is switched on without
rotation of alternator), mA |
350
|
|
Connection diagram as part of the alternator
installation:
Dimensional drawing:
|