ENG
Operation Manual
18
AVR LCD
5. APPLICATION
The Automatic voltage regulator (AVR) is designed for providing various equipment with
high-quality stable electric power supply in conditions of signi
fi
cant and continuous deviations of
mains voltage and protecting your equipment from high-frequency and high-voltage impulses.
6. INSTALLATION
Attention! Before connecting the regulator, make sure that all consuming devices connec-
ted to it are off.
•
Before installing the AVR, please make sure that total power of all voltage consumers is lower
than AVR power. Besides, taking into account the starting load and power factor of consumers, it is
necessary to apply power margin factor of 1.2–1.5; for such equipment as air conditioners,
fridges, etc., it should be 1.5–2.
Attention! When choosing an AVR, it is necessary to know that reduction of input voltage
increases value of input current, which means that maximum power of AVR is reduced too!
Such dependence is shown in the graph below:
Note. When choosing or operating an AVR, it is always necessary to adhere strictly to such
dependence. If the condition stated above is not adhered to, warranty servicing becomes
void!
•
Voltage consumers should be connected only if the AVR is o
ff
.
•
Connect the AVR to a 220 V household mains (except for AVR-3000 LCD/AVR-5000 LCD models)
and switch it on. Only after this has been done, switch on voltage consumers connected to the
AVR.
•
If the AVR operates properly, a green LED (Normal voltage LED) illuminates, the left digital display
shows input voltage of the AVR and the right digital display shows output voltage of the AVR.
•
In case mains voltage
goes beyond the permissible range (± 10 %), a red LED lights up.
Attention! If mains power supply drops, it is recommended that you switch off the AVR and
all voltage consumers and switch them back on only after power supply has been fully
restored.
140 150 160 170 180 187 200 210 220 230 240 250 260 270 280 290 300
0
50
75
100
100 110 120 130
Output power, %
Input
voltage, V
