SUMRY MPS-VIII ECO Series (eco lv)

Sumry MPS-VIII ECO Series Hybrid Solar Inverter User Manual

Model: MPS-VIII ECO Series (eco lv)

1. Introduzzjoni

This document provides comprehensive instructions for the assembly, installation, operation, and troubleshooting of the Sumry MPS-VIII ECO Series Hybrid Solar Inverter. This multi-function inverter/charger combines the capabilities of an inverter, solar charger, and battery charger to deliver uninterrupted power support in a compact design. Its user-friendly LCD display allows for configurable settings such as battery charging current, AC/solar charger priority, and acceptable input voltage, adattament għal diversi applikazzjonijiet.

1.1 Karatteristiċi

  • Ħruġ ta' mewġa sinusoidali pura għal elettronika sensittiva.
  • Input konfigurabbli voltagFirxa e għal apparat domestiku u kompjuters personali permezz ta' settings tal-LCD.
  • Adjustable battery charging current based on application needs via LCD settings.
  • Prijorità konfigurabbli tal-AC/Charger Solari permezz tas-settings tal-LCD.
  • Kompatibbli maż-żewġ vol ewlenintage u l-qawwa tal-ġeneratur.
  • Automatic restart function upon AC power recovery.
  • Integrated protection against overload, over-temperature, and short circuits.
  • Smart battery charger design for optimized battery performance and longevity.
  • Cold start function for reliable operation.
  • Built-in 120A MPPT Solar charge controller, with a maximum 4200W solar charge (for 3.6kW models).
  • Input PV għoli voltage firxa (60-500VDC).
  • Kit kontra t-trab integrat għal durabilità mtejba f'ambjenti ħorox.
  • Dual output capability.

1.2 Arkitettura Bażika tas-Sistema

The inverter is designed to integrate seamlessly into a hybrid power system. A typical setup includes:

  • Pannelli Solari: Provide DC power from sunlight.
  • Utility Grid/Generator: Alternative AC power sources.
  • Inverter Solari Ibridu: Manages power flow, converts DC to AC, and charges batteries.
  • Pakketti ta' Batteriji Esterni: Store energy for backup or night-time use.
  • Apparati tad-Dar: Powered by the inverter.

Basic System Architecture Diagram
Figure 1: Basic System Architecture showing solar panels, utility grid, generator, inverter, battery, and home appliances.

2. Istruzzjonijiet tas-Sigurtà

TWISSIJA: Dan il-kapitolu fih istruzzjonijiet importanti dwar is-sigurtà u l-operat. Aqra u żomm dan il-manwal għal referenza futura.

  1. Qabel tuża l-unità, aqra l-istruzzjonijiet kollha u l-marki ta’ kawtela fuq l-unità, il-batteriji, u t-taqsimiet kollha xierqa ta’ dan il-manwal.
  2. ATTENZJONI: Biex tnaqqas ir-riskju ta’ korriment, iċċarġja biss batteriji rikarikabbli tat-tip taċ-ċomb-aċidu b’ċiklu profond. Tipi oħra ta’ batteriji jistgħu jinfaqgħu, u jikkawżaw korriment personali u ħsara.
  3. Żarmax l-unità. Ħudha f'ċentru ta' servizz kwalifikat meta jkun meħtieġ servizz jew tiswija. Assemblaġġ mill-ġdid mhux korrett jista 'jirriżulta f'riskju ta' xokk elettriku jew nar.
  4. Biex tnaqqas ir-riskju ta 'xokk elettriku, skonnettja l-wajers kollha qabel ma tipprova kwalunkwe manutenzjoni jew tindif. It-tifi tal-unità ma jnaqqasx dan ir-riskju.
  5. ATTENZJONI: Persunal kwalifikat biss jista' jinstalla dan l-apparat b'batterija.
  6. QATT iċċarġja batterija ffriżata.
  7. For optimum operation of this inverter/charger, please follow the required specifications to select appropriate cable sizes. It is very important to correctly operate this inverter/charger.
  8. Kun kawt ħafna meta taħdem b'għodda tal-metall fuq jew madwar il-batteriji. Jeżisti riskju potenzjali li twaqqa' għodda għal spark jew short circuit batteriji jew partijiet elettriċi oħra u jista 'jikkawża splużjoni.
  9. Please strictly follow the installation procedure when you want to disconnect AC or DC terminals. Refer to the INSTALLATION section of this manual for details.
  10. Biċċa waħda ta 'fjus 150A hija pprovduta bħala protezzjoni ta' kurrent żejjed għall-provvista tal-batterija.
  11. ISTRUZZJONIJIET TAT-TAT-TAT: Dan l-inverter/ċarġer għandu jkun imqabbad ma 'sistema ta' wajers ertjati permanenti. Kun żgur li tikkonforma mar-rekwiżiti u r-regolamenti lokali biex tinstalla dan l-inverter.
  12. QATT cause AC output and DC input short circuits. Do MHUX Qabbad mal-mejns meta jkun hemm short circuit fid-dħul tad-DC.
  13. Twissija!! Persuni tas-servizz kwalifikati biss jistgħu jagħmlu manutenzjoni fuq dan l-apparat. Jekk l-iżbalji jippersistu wara li ssegwi t-tabella tas-soluzzjoni tal-problemi, jekk jogħġbok ibgħat dan l-inverter/ċarġer lura lil negozjant lokali jew ċentru tas-servizz għall-manutenzjoni.

3. Installazzjoni

3.1 Spakkjar u Spezzjoni

Before installation, carefully inspect the unit. Ensure that nothing inside the package is damaged. The package should contain the inverter unit and this user manual.

3.2 Preparazzjoni

Before connecting any wiring, remove the bottom cover of the inverter by unscrewing the two screws as shown in the product video.

3.3 Immuntar tal-Unità

Ikkunsidra l-punti li ġejjin meta tagħżel post għall-installazzjoni:

  • Twaħħalx l-inverter fuq materjali tal-kostruzzjoni li jaqbdu.
  • Mount the unit on a solid surface.
  • Install this inverter at eye level to ensure the LCD display is easily readable.
  • Għal ċirkolazzjoni xierqa tal-arja u dissipazzjoni tas-sħana, ħalli spazju ta' madwar 20 ċm mal-ġnub u 50 ċm 'il fuq u taħt l-unità.
  • It-temperatura ambjentali għandha tkun bejn 0°C u 55°C għal tħaddim ottimali.
  • The recommended installation position is vertically adhered to a wall.
  • Kun żgur li jkun hemm biżżejjed spazju għad-dissipazzjoni tas-sħana u t-tneħħija tal-wajer.

Nota:

  • Adattat għall-immuntar fuq konkos jew uċuħ oħra li ma jaqbdux biss.
  • Install the unit by screwing two M6 screws.

3.4 Konnessjoni tal-batterija

ATTENZJONI: For safety and regulation compliance, it is recommended to install a separate DC over-current protector or disconnect device between the battery and the inverter. This ensures the inverter can be securely disconnected during maintenance and is protected from overcurrent.

Recommended Battery Cable Size:

MudellDaqs tal-WajerKejbil (mm²)Valur tat-Torque (massimu)
3.6KW/6.2KW1 x 2AWG252 Nm

TWISSIJA: Periklu ta' Xokk! L-installazzjoni għandha titwettaq b'attenzjoni minħabba l-volum għoli tal-batterija.tage f'serje.

CAUTION: Before making the final DC connection or closing the DC breaker/disconnector, ensure positive (+) is connected to positive (+) and negative (-) is connected to negative (-).

Dijagramma tal-Konnessjoni tal-Batterija
Figure 2: Battery connection diagram showing 120A PV Max, 100A AC Max, 24V, and compatibility with GEL, FLD, LI, and USE battery types.


Vidjo 1: Prodott lestview and connection demonstration, including battery wiring.

3.5 Konnessjoni ta 'Input/Output AC

ATTENZJONI: Before connecting to the AC input power source, install a separate AC breaker between the inverter and the AC input power source. This ensures the inverter can be securely disconnected during maintenance and is fully protected from overcurrent. The recommended AC breaker specifications are 32A for 3.6KW models and 50A for 6.2KW models.

ATTENZJONI: There are two terminal blocks marked "IN" and "OUT". Do MHUX mis-connect input and output connectors.

TWISSIJA: Il-wajers kollha għandhom isiru minn persunal kwalifikat.

Recommended AC Wire Sizes:

MudellKejlKejbil (mm²)Valur tat-torque
3.6KW12 AWG41.2 Nm
6.2KW10 AWG61.2 Nm

TWISSIJA: Kun żgur li s-sors tal-enerġija AC ikun skonnettjat qabel ma tipprova tqabbadha mal-unità.

Circuit Breaker Specification for 3.6KW
Figure 3: Circuit breaker specifications for the 3.6KW model, indicating 2P100A for battery, 2P20A for PV, 2P50A for utility input, and 2P30A for output.

Wiring and Technical Specifications Diagram
Figure 4: Wiring and technical specifications diagram, illustrating connections for generator, mains power, inverter, solar panels, battery, and AC output appliances. Includes details on AC input/output, PV input, battery type, and max charge currents.

3.6 Konnessjoni PV

ATTENZJONI: Before connecting to PV modules, install a DC circuit breaker separately between the inverter and PV modules.

WARNING: It is very important for system safety and efficient operation to use appropriate cable for PV module connection.

Recommended PV Cable Size:

MudellDaqs tal-WajerKejbil (mm²)Valur tat-Torque (massimu)
3.6KW/6.2KW1 x 12AWG41.2 Nm

Għażla tal-Modulu PV:

Meta tagħżel il-moduli PV xierqa, ikkunsidra l-parametri li ġejjin:

  • Iċ-Ċirkwit Miftuħ Voltage (Voc) of PV modules should not exceed the maximum PV array open circuit voltage tal-inverter (500Vdc).
  • Iċ-Ċirkwit Miftuħ Voltage (Voc) tal-moduli PV għandu jkun ogħla mill-volum minimu tal-batterijatage.
MUDELL INVERTER3.6KW6.2KW
Max. PV Array Ċirkwit Miftuħ Voltage500Vdc
PV Array MPPT Voltage Firxa60Vdc ~ 450Vdc

3.7 Konnessjoni tal-Komunikazzjoni

The Sumry eco lv series machine has two communication ports:

  • Port tal-Komunikazzjoni RS232: Used for Wi-Fi module communication. The Wi-Fi module (sold separately) enables remote monitoring and basic parameter settings via a mobile app or webpage. If you wish to use this feature, please acquire the Wi-Fi module separately.
  • Port tal-Komunikazzjoni RS485: Used for lithium battery BMS (Battery Management System) communication. If you intend to use lithium battery BMS communication, you must select batteries that support the PACE or PYLONTECH communication protocols.

RS485 Communication Line Diagram
Figure 5: RS485 communication line diagram, showing connection between the inverter's COMM port and the battery's RS485 port.

WIFI/BMS Communication Ports
Figure 6: Inverter communication ports, including the RS232 port for optional Wi-Fi/GPRS module and the RS485 port for BMS communication.

4. Operazzjoni

4.1 Qawwa ON/OFF

Once the unit is properly installed and the batteries are connected, simply press the On/Off switch (located on the bottom of the case) to turn on the unit.

4.2 Operazzjoni u Panel tal-Wiri

The operation and display panel is located on the front of the inverter. It includes three indicators, four function keys, and an LCD display, providing information on operating status and input/output power.

RGB Light Indicators (Optional)

  • Red Light: Battery Mode
  • Blue Light: Utility Mode
  • Purple Light: PV Mode

LCD Display Icons and Messages

The LCD display provides various icons and messages to indicate the inverter's status:

IndikaturStatusMessaġġ
INV/ACAħdar SoliduOutput huwa mħaddem mill-utilità fil-modalità Linja.
Aħdar li jteptepL-output huwa mħaddem bil-batterija jew PV fil-modalità tal-batterija.
CHGAħdar SoliduIl-batterija hija kompletament iċċarġjata.
Aħdar li jteptepIl-batterija qed tiċċarġja.
ĦTIJIETAħmar SoliduIl-ħsara sseħħ fl-inverter.
Aħmar li jteptepKundizzjoni ta' twissija sseħħ fl-inverter.

Ċwievet tal-Funzjoni

  • ESC: Biex toħroġ mill-mod ta' l-issettjar.
  • UP: Biex tmur għall-għażla preċedenti.
  • 'L isfel: Biex tmur għall-għażla li jmiss.
  • Daħħal: Biex tikkonferma l-għażla fil-modalità tas-setting jew tidħol fil-modalità tas-setting.

4.3 L-issettjar tal-LCD

To enter setting mode, press and hold the ENTER button for 3 seconds. Use the UP or DOWN buttons to select programs, and ENTER to confirm or ESC to exit. Key settings include:

  • Prijorità tas-Sors tal-Output: Configure whether solar, utility, or battery is prioritized.
  • Kurrent Massimu tal-Iċċarġjar: Issettja l-kurrent totali tal-iċċarġjar għal ċarġers solari u tal-utilità.
  • Tip ta 'batterija: Select from AGM, Flooded, User-Defined, or Lithium.
  • Ħruġ Voltage/Frekwenza: Adjust AC output voltage (100-120V) and frequency (50/60Hz).
  • Ekwalizzazzjoni tal-Batterija: Enable or disable, set voltage, ħin, u intervall.

4.4 Deskrizzjoni tal-Modalità Operattiva

The inverter supports various operating modes, including:

  • Modalità Standby: Inverter is on but not actively supplying power to loads.
  • Modalità tal-Linja: Inverter draws power from the utility grid to supply loads and charge batteries.
  • Grid-Tie Operation: Inverter feeds excess solar energy back to the grid.

4.5 Deskrizzjoni tal-Ekwalizzazzjoni tal-Batterija

The equalization function helps prevent the buildup of negative chemical effects in batteries, such as stratification and sulfation, which can reduce battery capacity. It is recommended to equalize batteries periodically.

Kif tapplika l-Funzjoni ta' Ekwalizzazzjoni:

  1. Enable battery equalization in LCD setting program 30.
  2. Set the equalization interval in program 35, or activate immediately in program 36.

Meta Tiġi Ekwalizzata:

Fil-float stage, when the set equalization interval is reached or immediate equalization is activated, the controller will enter the Equalize stage. The controller will supply power to charge the battery until it reaches the equalization voltage, maintaining it until the set equalized time is reached.

5. Manutenzjoni

5.1 Clearance and Maintenance for Anti-Dust Kit

The inverter comes with a factory-installed anti-dust kit to protect internal components and enhance reliability. This kit should be cleaned regularly.

Proċedura tat-Tindif:

  1. Loosen the screws on the top of the inverter in a counterclockwise direction.
  2. Carefully remove the dustproof case and take out the air filter foam.
  3. Clean the air filter foam and the dustproof case.
  4. After cleaning, re-assemble the dust-kit back onto the inverter.

AVVIŻ: Il-kit kontra t-trab għandu jitnaddaf mit-trab kull xahar.

6 Issolvi l-problemi

This section provides guidance for common issues. If problems persist after following these steps, please contact your local dealer or service center.

ProblemaLCD/LED/BuzzerSpjegazzjoni / Kawża PossibbliX'għandek tagħmel
L-unità tintefa awtomatikament waqt il-proċess tal-istartjar.LCD/LEDs and buzzer active for 3 seconds then off.Il-batterija voltage hija baxxa wisq (<1.91V/Ċellula).1. Iċċarġja mill-ġdid il-batterija.
2. Ibdel il-batterija.
Ebda rispons wara li jinxtegħel.L-ebda indikazzjoni.1. Il-batterija voltage hija baxxa wisq (<1.4V/Ċellula).
2. Il-fjus intern tqabbad.
1. Ikkuntattja ċentru tat-tiswija biex tissostitwixxi l-fjus.
2. Iċċarġja mill-ġdid il-batterija.
3. Ibdel il-batterija.
Il-mejns jeżistu iżda l-unità taħdem fil-modalità tal-batterija.Input voltage hija murija bħala 0 fuq l-LCD u l-LED aħdar qed jiteptep.Il-protettur tal-input huwa tripped.Iċċekkja jekk l-interruttur tal-AC huwiex imqabbad u l-wajers tal-AC humiex konnessi sew.
L-LED aħdar qed iteptep.Kwalità insuffiċjenti tal-enerġija AC (Shore jew Ġeneratur).1. Iċċekkja jekk il-wajers AC humiex irqaq wisq u/jew twal wisq.
2. Iċċekkja jekk il-ġeneratur (jekk applikat) huwiex qed jaħdem tajjeb jew jekk l-input voltage range setting is correct (UPS Appliance).
L-LED aħdar qed iteptep.Issettja "Solar First" bħala l-prijorità tas-sors tal-ħruġ.Ibdel il-prijorità tas-sors tal-output għal Utilità l-ewwel.
Meta l-unità tkun mixgħula, ir-relay intern jinxtegħel u jintefa ripetutament.Il-wiri LCD u l-LEDs qed iteptep.Il-batterija hija skonnettjata.Iċċekkja jekk il-wajers tal-batterija humiex konnessi sew.
Kodiċi tal-ħsara 07Żball ta' tagħbija żejda. L-inverter huwa tagħbija żejda 110% u l-ħin huwa sa.Naqqas it-tagħbija konnessa billi titfi xi tagħmir.
Kodiċi tal-ħsara 05Output short circuited.Iċċekkja jekk il-wajers humiex konnessi sew u neħħi t-tagħbija anormali.
Kodiċi tal-ħsara 02Temperature of internal converter component is over 120°C. Internal temperature of inverter component is over 100°C.Iċċekkja jekk il-fluss tal-arja tal-unità huwiex imblukkat jew jekk it-temperatura ambjentali hijiex għolja wisq.
Il-buzzer ħoss kontinwament u l-LED aħmar huwa mixgħul.Kodiċi tal-ħsara 03Il-batterija hija ċċarġjata żżejjed. Il-volum tal-batterijatage huwa għoli wisq.Return to repair center. Check if spec and quantity of batteries meet requirements.
Kodiċi tal-ħsara 01Ħtija tal-fann.Ibdel il-fann.
Kodiċi tal-ħsara 06/58Output anormali (Inverter voltage taħt il-190Vac jew ogħla minn 260Vac).1. Naqqas it-tagħbija konnessa.
2. Return to repair center.
Kodiċi tal-ħsara 08/09/53/57Il-komponenti interni fallew.Ritorn fiċ-ċentru tat-tiswija.
Kodiċi tal-ħsara 51Kurrent żejjed jew żieda qawwija.Erġa' ibda l-unità. Jekk l-iżball jerġa' jiġri, jekk jogħġbok erġa' lura għand iċ-ċentru tat-tiswija.
Kodiċi tal-ħsara 52Xarabank voltage huwa baxx wisq.
Kodiċi tal-ħsara 55Vol. Tal-ħruġtage hija żbilanċjata.

7. Speċifikazzjonijiet

7.1 Speċifikazzjonijiet tal-Modalità tal-Linja

Karatteristika3.6KW6.2KW
Input Voltage Forma tal-mewġSinusojdali (utilità jew ġeneratur)
Vol Input Nominalitage100Vac
Telf Baxx Voltage90Vac±5V (UPS); 90Vac ± 5V (Appliances)
Ritorn ta' Telf Baxx Voltage95Vac±5V (UPS); 95Vac ± 5V (Appliances)
Telf Għoli Voltage145Vac ± 5V
Ritorn ta' Telf Għoli Voltage140Vac ± 5V
Max AC Input Voltage150Vac
Frekwenza Input Nominali50Hz / 60Hz (skoperta awtomatika)
Frekwenza ta' Telf Baxxa40 ± 1Hz
Frekwenza ta' Ritorn ta' Telf Baxx42 ± 1Hz
Frekwenza ta' Telf Għoli65 ± 1Hz
Frekwenza ta 'Ritorn ta' Telf Għoli63 ± 1Hz
Protezzjoni Short Circuit OutputCircuit Breaker
Effiċjenza (Modalità Linja)>95% (Tagħbija R nominali, batterija ċċarġjata għalkollox)
Ħin tat-Trasferiment10ms tipiku (UPS); 20ms tipiku (Appliances)

7.2 Speċifikazzjonijiet tal-Modalità Inverter

Karatteristika3.6KW6.2KW
Qawwa tal-Ħruġ Rated3.6KW6.2KW
Ħruġ Voltage Forma tal-mewġMewġa Sinjura Pura
Ħruġ Voltage Regolament100/105/110/115/120Vac±5%
Frekwenza tal-ħruġ50Hz
L-ogħla Effiċjenza93%
Protezzjoni ta 'tagħbija żejda3s@≥150%; 5s@101%~150% load
Kapaċità Żieda2 * qawwa nominali għal 5 sekondi
Input nominali DC Voltage24Vdc48Vdc
Bidu kiesaħ Voltage23.0Vdc46.0Vdc
Vol. Twissija DC baxxtage @load < 50%22.0Vdc44.0Vdc
Vol. Twissija DC baxxtage @load ≥ 50%21.0Vdc42.0Vdc
Ritorn ta' Twissija DC baxx Voltage @load < 50%22.5Vdc45.0Vdc
Ritorn ta' Twissija DC baxx Voltage @load ≥ 50%22.0Vdc44.0Vdc
Baxx DC Cut-off Voltage @load < 50%20.5Vdc41.0Vdc
Baxx DC Cut-off Voltage @load ≥ 50%20.0Vdc40.0Vdc
Vol ta' Rkupru DC Għolitage32Vdc62Vdc
Qtugħ DC Għoli Voltage33Vdc63Vdc
Ebda Konsum ta 'Enerġija Tagħbija45W50W

7.3 Qawwa tal-Ħruġ b'Żewġ Tagħbijiet

Karatteristika3.6KW6.2KW
Tagħbija Sħiħa3600W6200W
Tagħbija Prinċipali Massima3600W6200W
Tagħbija Massima tat-Tieni (mudell tal-batterija)1200W2066W
Tagħbija Prinċipali Cut Off Voltage26VDC52VDC
Ritorn tat-Tagħbija Prinċipali Voltage27VDC54VDC

7.4 Speċifikazzjonijiet tal-Modalità ta' Ċarġ

Karatteristika3.6KW6.2KW
Modalità tal-Iċċarġjar tal-Utilità
Algoritmu tal-Iċċarġjar3-Pass
Kurrent tal-Iċċarġjar AC (Mass)80Amp (@VI/P=100 Vac)
Iċċarġjar bl-ingrossa Voltage (Batterija mgħarrqa)29.258.4
Iċċarġjar bl-ingrossa Voltage (Batterija AGM / tal-Ġell)28.256.4
Iċċarġjar f'wiċċ l-ilma Voltage27Vdc54Vdc
Modalità tal-Iċċarġjar Solari MPPT
Massimu PV Array Power4200W6500W
PV nominali Voltage240Vdc360Vdc
PV Array MPPT Voltage Firxa60Vdc ~ 500Vdc
Max. PV Array Ċirkwit Miftuħ Voltage500Vdc
Kurrent Massimu tal-Iċċarġjar (ċarġer AC flimkien ma' ċarġer solari)120Amp120Amp

7.5 Operazzjoni ta' Grid-Tie

Karatteristika3.6KW6.2KW
Vol Output Nominalitage100/105/110/115/120VAC
Feed-in Grid Voltage Firxa90 ~ 150VAC
Feed-in Medda ta' Frekwenzi tal-Grid49~51±1Hz/59~61±1Hz
Kurrent tal-Ħruġ Nominali30A51.7A
Firxa tal-Fattur tal-Enerġija>0.99
Effiċjenza tal-Konverżjoni Massima (DC/AC)97%

7.6 Speċifikazzjonijiet Ġenerali

Karatteristika3.6KW6.2KW
Ċertifikazzjoni tas-SigurtàCE
Firxa tat-Temperatura Operattiva-10°C sa 50°C
Temperatura tal-Ħażna-15°C ~ 60°C
Umdità5% sa 95% Umdità Relattiva (Mhux kondensazzjoni)
Dimensjoni (D * W * H), mm110X334X423110X334X423
Piż nett, kg910

8. Għajnuniet għall-Utenti

  • Daqs tal-Panel Solari: When determining the number of solar panels needed, refer to the 'PV Module Selection' section in this manual (Section 3.6) to ensure compatibility with the inverter's voltage range and power capacity. Consider your total power requirements and consult the 'Approximate Back-up Time Table' (Appendix 9 in the full PDF manual) for guidance.
  • Inverter Weight: The 6.2KW model of this inverter weighs approximately 10 kg (about 22 lbs). Ensure your mounting surface can safely support this weight.

9. Garanzija u Appoġġ

The Sumry MPS-VIII ECO Series Hybrid Solar Inverter is certified with CE, RoHS, and FC standards, indicating compliance with relevant safety and environmental regulations.

For detailed warranty information, service procedures, and technical support, please refer to the complete user manual available in PDF format. This manual contains comprehensive details regarding product guarantees and how to obtain assistance if needed.

Referenza: Sumry Hybrid Inverter User Manual (PDF)

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