Real-El STAB-300 User manual

STAB-300
STAB-500
STAB-1000
STAB-2000
AUTOMATIC VOLTAGE
REGULATOR
OPERATION MANUAL

Technical support www.real-el.com
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Operation Manual
STAB-300/500/1000/2000
ENG
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CONTENTS
1. SAFETY PRECAUTIONS ...........................................................................
2. PACKAGE CONTENTS .............................................................................
3. SPECIAL FEATURES ...............................................................................
4. DESCRIPTION ......................................................................................
5. APPLICATION ........................................................................................
6. INSTALLATION ......................................................................................
7. PAUSE FUNCTION ................................................................................
8. PROTECTION FROM HIGH INPUT VOLTAGE, OVERLOAD AND OVERHEAT .............
9. TROUBLESHOOTING .............................................................................
10. TECHNICAL SPECIFICATIONS ...................................................................
BUYER RECOMMENDATIONS
•Unpack the device carefully. Make sure there are no accessories left in the box. Check up the
device for damage; if the product was damaged during transportation, address the firm, which
carried out the delivery; if the product functions incorrectly, address the dealer at once.
•Check up the package contents and availability of the warranty card. Make sure the warranty card
has a shop stamp, a legible signature or the seller’s stamp and purchase date, and the goods
number corresponds to that in the warranty card. Remember that at the loss of warranty card or
lack of coincidence of numbers you are deprived the right on warranty repair.
• Do not switch on the product immediately after you bring it into a room from environment with
negative temperature! After unpacking, the product should be kept in conditions of room tempe-
rature for at least 4 hours.
Congratulations on the purchase of TM REAL-EL automatic voltage regulator!
Please read this Operation Manual before using the unit and retain this Operation Manual in a safe
place for future reference.
COPYRIGHT
© 2015. ENEL GROUP OU.
This manual and information contained in it are copyrighted. All rights reserved.
TRADEMARKS
All trademarks are the property of their legal holders.
NOTICE OF RESPONSIBILITY RESTRICTION
Despite the exerted efforts to make this Manual more exact, some discrepancies may occur. The
information in this Manual is given on “as is” terms. The author and the publisher do not bear any
liability to a person or an organization for loss or damage, which has arisen from the information
contained in this Manual.

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Automatic Voltage
Regulator
ENG
STAB-300/500/1000/2000
Caution! There is high voltage inside on unsolated components,
which can result in electric shock.
1. SAFETY PRECAUTIONS
Before using this device, please read the safety rules carefully:
• It is strongly forbidden to open the cover of the device, there is high voltage inside. If some prob-
lems occur, please read the operation manual carefully and address an authorized service center.
For the list of authorized service centers please go to www.real-el.com.
• Do not let liquid get inside the device, it can cause short circuit or electric shock.
• In case there are signs of improper operation of the device (sparkling, unusual smells, etc.), un-
plug the device from the mains immediately and address your nearest authorized service center.
• It is forbidden to connect the automatic voltage regulator to devices with power consumption
higher than its maximum output power. It can cause breakdown of the device.
• Do not let children operate the device.
It is strongly forbidden to operate the device in the following conditions:
–in dusty environment or environment containing highly inflammable gas;
–at temperature higher than 40 °C or lower than 0 °C;
–at humidity level higher than 90 %;
–in direct sunlight or next to heating elements;
–in vibration areas;
–outdoors.
• In case of fire use only powder fire extinguisher, as water can cause electric shock.
• The automatic voltage regulator should be installed in proximity to power supply, then it will be
easier to unplug the device if necessary.
2. PACKAGE CONTENTS
• Automatic voltage regulator – 1 pc
•Fuse – 2 pcs
•Operation Manual – 1 pc
•Warranty card – 1 pc
3. SPECIAL FEATURES
• High precision of output voltage regulation
• Wide range of input voltages 140-265 V
• Microprocessor control
• Digital indicator of input and output voltages on the front panel
• Toroidal transformer with built-in automatic restorable thermal protection
• Protection of devices-consumers against high and low voltages, overload, from influence of high
frequency and impulse interferences
• PAUSE function to delay AVR turning on (within 10 sec.) after power supply resumption

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ENG
Operation Manual
STAB-300/500/1000/2000
Запобіжник
Вихідна напруга ~220 В± 8%
Виготовлено вКитаї
Щоб уникнути ураження електричним струмом, не розбирайте
пристрій іне ремонтуйте самостійно. Ремонт повинні здійснювати
лише кваліфіковані фахівці. Використовувати лише вприміщенні.
УВАГА!
~220 В/ 50 Гц



STAB-300/500/1000 STAB-2000
Виготовлено вКитаї
Вихідна напруга ~220 В± 8% Вихідна напруга ~220 В± 8%
УВАГА!
Щоб уникнути ураження електричним струмом, не розбирайте
пристрій іне ремонтуйте самостійно. Ремонт повинні здійснювати
лише кваліфіковані фахівці. Використовувати лише вприміщенні.
Запобіжник
~220 В/ 50 Гц
Fig. 2. Rear panel
Fig. 1. Front panel
Вхідна/вихідна
напруга



4. DESCRIPTION
Digital indicator: output voltage level is dis-
played by default; countdown to the AVR
turning on is displayed in the window of
indicator when power supply is resumed
during the pause;
“H” – is displayed in case of power failure due
to high voltage;
“L” – is displayed in case of power failure due
to low voltage;
“С” – is displayed on operation of overheating
protection
Selection button to indicate input/output
voltage: by pressing button the display in-
dicates input voltage and the display flashes;
for output voltage indication please press
button again.
AVR power switch
Fuse holder
Built-in power cable
Output socket

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ENG
Automatic Voltage
Regulator
STAB-300/500/1000/2000
5. APPLICATION
Automatic voltage regulator (AVR) is designed for providing various equipment with high-quality
stable electric power supply in conditions of significant and continuous deviations of mains voltage
and protecting consumer devices against overload, influence of high frequency and impulse
interferences.
6. INSTALLATION
Attention! Before connecting the regulator, make sure that all consumer devices con-
nected to it are off.
• Before installing the AVR, please make sure that total power of all voltage consumers is lower than
AVR power. Taking into account the starting load and power factor of voltage consumers, it is
necessary to apply power margin factor of 1.2–1.5; for such equipment as air conditioners, fridges
and other electric motors 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. Adhere strictly to such dependence. If the condition stated above is not adhered to,
warranty servicing becomes void!
• Consumer devices should be connected to the AVR when it is off.
• Connect the AVR to 220 V household mains and switch it on using switch . Digital indicator 
will display the countdown to the AVR starting.
• If the AVR operates properly, digital indicator will display the voltage on the AVR output, i.e. the
output voltage. Connected consumer devices must be turned on after that only.
• If the mains voltage exceeds the operating range (140 – 265 V), the AVR disconnects the load
automatically (connected devices) and indicator will display characters “L” or “H”.
Attention! If the AVR is not used for a long time, it is recommended to disconnect the AVR
and all consumer devices from the power supply network.
140 150 160 170 180 187 200 210 220 230 240 250 260 2650
50
25
75
100
100 110 120 130
output power, %
of nominal
input
voltage, V

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ENG
Operation Manual
STAB-300/500/1000/2000
1. The switch is off.
2. There is no voltage in the
power supply network.
3. The fuse has activated.
4.The load connected is too
powerful.
The AVR is out of order.
Input voltage is very
unstable.
Input voltage is beyond
possible regulation range of
140 – 265 V.
7. PAUSE FUNCTION
• This function is designed to protect a connected device with the use of turn-on delay of the AVR
after power supply resumption. The AVR will turn on after 10 sec. after power supply resumption (at
that time indicator displays the countdown to its turning on).
8. PROTECTION FUNCTION AGAINST HIGH AND LOW INPUT VOLTAGES, OVERLOAD AND
OVERHEATING
• The AVR is equipped with automatic protection circuit against high and low input voltages. When
the power supply voltage exceeds the operating range (140 – 265 V), the load is disconnected auto-
matically and indicator displays “L” or “H”. After normal voltage resumption the AVR is turned on
automatically and resumes its operation.
• The AVR is equipped with the transformer thermal protection, which protects the device against
overload and overheating. The built-in transformer thermal protection is activated when the tempera-
ture is 120 °C and the load is disconnected (indicator displays “С”). The AVR is turned on automa-
tically after its cooling.
9. TROUBLESHOOTING
The AVR does not start.
The AVR is turned on, but
there is no output voltage.
The AVR often produces
clicking sounds.
The AVR has disconnected
the load. Indicator displays
“L” or “H”.
1. Press the switch once again.
2. Make sure that power supply
is available.
3. Disconnect the AVR from the
power supply and change the
fuse.
4. Disconnect some load.
If the problem is not eliminated,
please address an authorized
service center.
It is normal. The AVR regulates
output voltage.
When input voltage is
normalized, the AVR tuns on
automatically.
CauseProblem Solution
If none of the above methods can solve the problem, please seek professional advice at your
nearest service center. Never attempt to repair the product by yourself.

Technical support: www.real-el.com
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ENG
Automatic Voltage
Regulator
STAB-300/500/1000/2000
Total power, VА
Maximum output
power, W*
Fuse, А
Input voltage, V
Input frequency, Hz
Output voltage, V
Output frequency, Hz
Switch time, ms
Short circuit protection
Environment temperature, °C
Humidity, %
Dimensions, mm
Weight, kg
~140 – 265
50
~220 ± 8 %
50
≤10
available
0 – 40
up to 90
195 × 120 × 115
Models
Parameters
* The AVR output power is rated for the input voltage of 187 V (220 V – 15 %) (according to the
requirements of GOST
27699−88).
10.
TECHNICAL SPECIFICATIONS
Notes:
• Technical specifications given in this table are supplemental information and cannot give
occasion to claims.
• Technical specifications and package contents are subject to change without notice due
to the improvement of TM REAL-EL production
.
33 7 12
240 800
400 1600
300 1000
500 2000
1.66 2 2.5 4.15
250×140×140
STAB-300 STAB-500 STAB-1000 STAB-2000

Models: STAB-300, STAB-500, STAB-1000, STAB-2000
Manufacturer: ENEL GROUP OU, Joe 5-39, Tallinn, Harjumaa 10151, Estonia.
Made in China.
® Registered Trademark of ENEL GROUP OU. Estonia.