User Manual

(ForAVR Series Voltage Stabilizer)

ProductIntroduction .1/9
Installation Wiring.. .3/9
Operation Guide. .4/9
Equipment Cautions. .6/9
Maintenance&Fault. .7/9

This manual provides essential instructions forinstallng,using,and maintaining the product.To ensure proper installation andoperation,pleaseread the manual thoroughly beforeuse.Forany questions,pleasecontactourcompanyorauthorized agent. Our professional team is here to assist you.

1. Product Introduction

1-1. Overview and Characteristics

This product is anewly developed next-generation intellgent voltage stabilizer.It employs DSP-based measurement chipcontrol,fastACsampling,zero-crossngcurrent switching,andrapidcompensation voltage stabilzation techology, integrating inteligent instrumentation,fastvoltage stabilization,and faultdiagnosis functions.Thecoreconfiguration includes an isolation transformer，SVC voltage stabilization module,MCU control core ^ + high-precision sampling components,and safety protection devices,ofering advantages insafety,eficiency,precision,energyconservation,and environmental protection.

(1）Smart LCD display:Thesmart meter providesreal-time readings of line voltage,phase voltage,current,frequency, temperature,andoperational status with highresolution.Featuring a thin-filmbutton for intuitive operation,it esures safety and reliability.
(2）Three-phase demodulation: The output voltage imbalance is less than 1 % ,ensuring the accuracy of the output voltage for each phase remains constant.
(3）Wideapplicability:The voltage regulationrange is broad,whichcanmeethe needsofpowersupplyandgridquality is poor, voltage fluctuation range is large places and equipment.
(4） Intelligent sampling: The microcontroller-based sampling circuit ensures precise sampling.
(5）The protector featurescomprehensive protection: it displaysand safeguardsagainst faults including overload, overvoltage,undervoltage,short circuit,andoverheating,ensuring safeoperationofboth the voltage stabilizerandits load.
(6）Powerful preset features:Protection limits can be set freely.
(7）High overload capacity:The system employs premiumcomponents with excellnt performance,capable of continuous operation at 80 % rated load and enduring a 1-minute instantaneous overload (1.5 times rated load) without damage.
(8）Adaptability:Ithasstrongadaptability topowergridandload,andcanworkreliablyandcontinuouslyunder various harsh power grid and complex load conditions.
(9）No distortion: Compensated voltage regulation method,no waveform distortion
(10)Low power loss:The system achieves minimal energy consumption with no-load loss below 0 . 5 % ，delivering substantial savings on electricity bills for customers.
(11)Bypass function for easymaintenance:Switches between‘voltage stabilization'and'direct bypass power supplyfor convenient troubleshooting.

1-2. Environmental Requirements

(1）The voltage regulator should be used indoors with good ventilation and a flat,solid floor.
(2）No conductive or explosive dust,no corosive metals,or gases,vapors,oroil mists that may damage insulation. (3）The rated capacity decreases with altitude.(If the altitude exceeds 1 0 0 0 { m } ,the rated capacity is reduced.)
(4）The ambient temperature ranges from . 5 ^ { \circ } C to + 4 0 ^ { \circ } \mathsf C ,with a dailyaverage <= 3 0 ^ { \circ } C and an annual average <= 2 5 ^ { \circ } C The temperature variation rate of the working environment should be <= 5 { K / h } .(Note: The overload capacity will decrease.) (5）Relative humidity: { <= } 9 0 % { R H } (no condensation at 4 0 ^ { \circ } \mathsf { C } ± 2 ^ { \circ } \mathsf { C } ）
(6） The waveform of the power supply voltage is approximately a sine wave (THD <= 4 % ）
(7） The transient peak voltage (Vp-p) in the power grid is <= 2 0 0 0 { V } , ,and there are no lightning strikes.
(8） Exposure to radioactive radiation should be avoided.
(9）Avoid abnormal mechanical stresses such as impact and vibration.
(10)Multiple voltage stabilizers should not be operated in parallel.
(11) Leave enough space around and on top of the voltage regulator for cooling and maintenance.
■Note:For special usage conditions notcoveredby the above terms,please negotiate with the seller during ordering or contact us at any time during use.

1-3.Technical Parameters

2. Installation Wiring

·Before instaling and wiring,always disconnect the power supply to prevent electric shock and accidents.
· The product must be installed and tested by trained electricians with proper certification.

2-1.Pre-installation Check

(1）Check if the product model and specifications match yourorder details,especially capacity and input/output voltage values.
(2）Check whether the factory documents(manual, certificate of conformity,etc.）and the items agreed to be delivered under the order are complete.
(3）Check whether the electrical components in the voltage regulator cabinet are damaged during transportation.
(4)Ensure all fasteners are securely fastened and wiring remains intact.Tighten the control plug to prevent poor contact.
(5）Upon delivery,users should unpack,inspect,and install the voltage stabilizer within one month to prevent quality degradation from prolonged storage.

Accessory wiring diagram:

ill TiilllTI ①lOOO①lΦO①l① RSTNUVWNG= InputPower Output Power
PowerSwitch

2-2. Installation and Wiring

(1)Positioning:

After passing inspection, the equipment shall be stably positioned to prevent damage to the housing and internal components;the chassis shall bear uniform loads,with sufficient ventilation and maintenance space reserved around it.

(2) Cable selection:

Cableselection:Selectcompatiblecablesand connectors (to ensure reliable connections)，considering factors such as load rate,current-carrying capacity,heat dissipation,environmental conditions,installation method, and transmission length.The wire gauge should be determined based on the voltage regulator's capacity(with adequate margin).Copper wire is recommended,with a selection standard of 3 . 5 { A } / {mm } ^ { 2 }

(3) Cable connections:

Cable connections:Connect the input line to the "Input (R/S/T)" terminal, the load line to the "Output (U/V/W)" terminal,and the neutral line to the "N" terminal (no neutral connection required for no-load circuits).The chassis ground wire should be connected to the "=" marked position.

4 1.The wiring diagram is for reference only;the actual markings on the voltage stabilizer shall prevail. 2. Strictly follow terminal markings for wiring: Do not reverse input/output and phase/neutral wires,avoid CAUTION confusing neutral with ground,and never omit the ground wire.Incorrect connections may cause equipment failure or damage.
3.The neutral wire must be properly connected (please specify any equipment that does notrequire a neutral wire when placing your order).
4.The wiring and connections from the powersupply tothe voltage regulator and fromthe voltage regulator to the load must ensure good contact,be sturdyand reliable,andbe capable ofcarrying the equipment's rated current.

3.Operation Guide

3-1.Display screen instructions:

Mainfeatures:

① Input voltage display; ⑧ Voltage stabilization and bypass;
② Output voltage indication; ⑨ Switch: Thekeyto toggle displaymode;
③ AC current display; {10} Parameterdisplayarea:
④ SET: Function menu key and confirmation key; ① Status display area: Temperature,frequency，overcurrent,overvoltage,
⑤ Decrease↓: The key to reduce; undervoltage，phase loss，motor and otherfault
⑥ Increase↑: The key to increase; indicators.
⑦ Manual/automatic mode switching;

3-2. Control panel settings:

All voltage settings must be phase voltage,not line voltage.Remember!

1) Set the stable voltage for U, V,and W phases:

This functionsets the stableoutputvoltageforeach phase.Itis presetatfactoryandcanberesetas needed.Theoperation is as follows:
1.Hold the SETbutton for5seconds,thenrelease.Wait until thevoltage seting,A phase,and 22OV indicators flash simultaneously.Adjust the value using the plus/minus keys to complete the U phase setting.
2.Press theSETbutonagainuntilthevoltage seting,Bphase,and2Vindicatorsflash.Usetheplus/minuskeys toadjust and finalize the V phase setting.
3.Pressthe SETkeyuntil thevoltage seting,Cphase,and 22oV indicators flash.Use the plus/minus keys toadjust and finalize the W phase setings.
After completing the three-phase parameter settings, press the Switch button to save and exit.

2) Overcurrent protection threshold setting:

This function ensures thesafeoperationof thevoltage stabilizerand load.The protection value is presetbydefault and can be reset as needed.The operation is as follows: Holdthe SETkeyfor5seconds,thenrelease.Press theSETkeyfourtimes insuccessionuntil the'CurrentSeting' indicator in the lowerright cornerflashes.Adjustthe value using the plus/minus keys,then press the Switch keytosave and exit.

3) Overvoltage and undervoltage protection threshold settings:

Thisfunction prevents thevoltageregulator fromexceeding itsoutputrange,ensuringsafe loadoperation.Theprotection threshold is preset by the manufacturer and can be reset as needed.The operation is as follows: Pressand hold theSETkeyfor5seconds,thenrelease.Pressthe SETkeyrepeatedlyuntil the sixth press,and wait forthe "Overvoltage Seting" indicator inthelowerrightcornertoflash.Adjust thevalue using the plus/minus keys.Pressthe SET keyagainuntilthe"Undervoltage Seting"indicatorflashes.Adjust thevalueusing theplus/minus keys.Finall,press the Switch key to save and exit.

4) Voltage stabilization accuracy setting:

This parameterisfactorypresetandcanberesetasneeded.Toreset:HoldtheSETbuttonfor5seconds,thenrelease.Pres the SETbuttoncontinuouslyuntilthe8th pressWait forthe'Precision Settng'indicatorinthelowerright cornertoflash. Adjust the value using the plus/minus keys (where n represents ± \mathsf { n V } output voltage).Finally, press the Switch button to save and exit.

5)Voltagecalibration

Iftheoutputphasevoltagedifersfromthedisplayedvoltage,calibrationcanbeperformed.Thefactorypresetisasfollows: Holdthe SETbutton for5seconds,thenrelease.Pressthe SETbuton continuouslyuntil the 10th press,when the'A'icon in the upperrightcormer willflash.Adjustthedisplayed value using the plus/minus keys until it matches theactual output

voltage of phase U relative to phase N.

Pressthe SETkeyagain,andthe'B'willflashat theupperrightcorner.Adjust thedisplayed valueusing theup/down keys until the current voltage matches the output voltage relative to N.
Pressthe SETkeyagain,andthe'C'willflashat theupper rightcorner.Adjust thedisplayed valueusing theup/down keys until the current voltage matches the output voltage relative to N.
Pressthe SETkeyagain,and the'ABC'willflash attheupperright corner(input voltage).Adjustthedisplayvalueusing the up/down buttons until the current voltage reading matches the input voltage relative to N.
Note: Calibrate by monitoring the voltage with amultimeterinrealtime.Switch to manual mode foroperation.Avoid adjustments unless necessary to prevent numerical errors that may affect voltage stabilization.

6) Display voltage switching operation:

Pressthe "switch"buttn for2seconds,thenreleaseit.The system willsequentiallydisplaythevoltage valuesofthenext phase,and you can switch between the phase voltage and line voltage display values.

7) Switching operation between "AVR" and "BY PASS" for voltage regulation and bypass:

Pressand holdthe "AVR/PASS"button for3seconds,then release to enter manual bypass mode with the "PASS" indicator lighton.Pressand hold the "AVR/PASs"buton for another 3 seconds,then release to activate the "AVR" voltage stabilization mode with the "AVR"indicator light illuminated!

8) Manual and automatic mode switching:

Pressand holdthe "AUTO/MANUAL"butonfor3 secondsto switch tomanual mode.Pressand hold the "AUTO/MANUAL"buton for another3 seconds to activate the "AVR"voltage stabilization mode.In manual mode,you can manually adjust the voltage by pressing the increase/decrease buttons.

4.Equipment Cautions

The following special precautions are essential for your personal safety and the safe use of the product and connected devices.Please read them carefully before use and strictly follow them during use.

(1）Onlycertified electricians may install，operate,or maintain thisequipment.Unauthorizedpersonnelare strictly prohibited from handling it.
(2）Before instalationor maintenance,completely disconnect the input power supply.Ensure all wiring issecurely fastened to prevent disconnection,sparking,contact oxidation,or automatic bypassArrange the wiring rationally to avoid tripping or abrasion.
(3）Proper grounding must be ensured.The grounding wire must not be connected to public utilities such as heating, water supply,or gas.Any safety incidents caused by failure to ground the wire shallbe the user'ssole responsibility.
(4）Do not disassemble the chasis,touch internal components,or unplug cables during operation.Avoid handling the device with wet hands.Never standon the chassis or place heavy objects inside.Strictly prevent conductive debris from entering the chassis.
(5）Unauthorized disassemblyor modification is prohibited.Do notclean with corrosive orcorrosive solvents.Do not pile items around the equipment. Ensure good ventilation.
(6)If the device is not used foralong time,the power switch should be turned offand the external wiring removed.
(7） Select equipment based on actual power consumption with a margin,ensuring voltage harmonic content <= 1 0 % .If the power factor or voltage is too low,reduce the capacity.
(8）The input voltage may fluctuate within ± 1 5 % to 30 % (based on the product specifications).
(9）Lightning protection devices must be installed in areas prone to lightning strikes.Please specifythis requirement when placing your order.

5.Maintenance & Fault

5-1. Daily maintenance:

4 CAUTION

Before performing maintenance, always disconnect the power supply to avoid electric shock or other safety hazards.

·Conduct regular inspections of the voltage stabilizer's operational status during use:

Duringinspection,verifywhetherthevoltagedisplayedbythevoltagestabilizer,theload(notexceedingtheratedvalue), andthe nputvoltage(notexceedingtheallwablefluctuationrange)arenormal.Ifabnormalitiesaredetectedaddress tem promptly.For issues that cannot beresolved immediately,notify the supplieror manufacturer tocoordinatea solution to prevent equipment damage.

Regular maintenance of the voltage stabilizer is recommended,including:

Regularlyclean thevoltage regulator'sstabilizingcomponents (removing dustand dirt to prevent moisture-induced control circuit failures),inspect thechasis'sfstenersandconnectionterminals (ddressanyloosenessorpoorontactpromptly), and repair or replace faulty/damaged componentsimmediately.

5-2. Fault Handling:

Before performing maintenance, always disconnect the power supply to prevent electric shock or othersafetyhazards.