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SG3.0RT /

SG4.0RT / SG5.0RT / SG6.0RT /

SG7.0RT / SG8.0RT / SG10RT /

SG12RT / SG15RT / SG17RT /

SG20RT3-Phase PV Grid-Connected

InverterUser ManualSG3.0-20RT-

UEN-Ver16-202110

3-Phase PV Grid-Connected Inverter

User Manual

SG3.0RT / SG4.0RT / SG5.0RT / SG6.0RT / SG7.0RT /
SG8.0RT / SG10RT / SG12RT / SG15RT / SG17RT /
SG20RT

SG3.0-20RT-UEN-Ver16-202110

Содержание SG10RT

Страница 1: ...G12RT SG15RT SG17RT SG20RT3 Phase PV Grid Connected InverterUser ManualSG3 0 20RT UEN Ver16 202110 3 Phase PV Grid Connected Inverter User Manual SG3 0RT SG4 0RT SG5 0RT SG6 0RT SG7 0RT SG8 0RT SG10RT...

Страница 2: ......

Страница 3: ...anual are owned by SUNGROW All other trademarks or registered trademarks mentioned in this manual are owned by their respective owners Software Licenses It is prohibited to use data contained in firmw...

Страница 4: ...or inverter owners who will have the ability to interact with the inver ter and qualified personnel who are responsible for the installation and commissioning of the inverter Qualified personnel shoul...

Страница 5: ...l result in death or serious injury Indicates a hazard with a medium level of risk that if not avoided could result in death or serious injury Indicates a hazard with a low level of risk that if not a...

Страница 6: ......

Страница 7: ...ge 13 3 1 Unpacking and Inspection 13 3 2 Inverter Storage 13 4 Mechanical Mounting 14 4 1 Safety during Mounting 14 4 2 Location Requirements 14 4 2 1 Environment Requirements 15 4 2 2 Carrier Requir...

Страница 8: ...Ethernet Communication 39 5 7 2 WLAN Communication 41 5 8 WiFi Connection for Brazil 42 5 9 Meter Connection 43 5 9 1 Assembling the COM Connector 43 5 9 2 Installing the COM Connector 45 5 10 RS485 C...

Страница 9: ...wer Regulation Parameters 81 7 10 4 Communication Parameters 85 7 10 5 Firmware Update 86 7 10 6 Auto test 87 8 System Decommissioning 89 8 1 Disconnecting the Inverter 89 8 2 Dismantling the Inverter...

Страница 10: ......

Страница 11: ...t be held liable for any damage caused by violation of the safety instructions in this manual When installing operating and maintaining the device comply with local laws and regulations The safety pre...

Страница 12: ...n the inverter is running Wait at least 10 minutes for the internal capacitors to discharge after all electric devices are removed and the inverter is powered off Ensure that there is no voltage or cu...

Страница 13: ...of the type certificate marking Risk of inverter damage due to electrostatic discharge ESD By touching the electronic components you may damage the inverter For inverter handling be sure to avoid any...

Страница 14: ...he product due to a faulty or damaged PV installation are not cov ered by warranty Any use other than the one described in this document is not permitted During the installation and operation of the i...

Страница 15: ...g figure shows the common grid configurations 2 2 Product Introduction Model Description The model description is as follows take SG10RTas an example Appearance The following figure shows the dimensio...

Страница 16: ...for hang ing the inverter 4 Label Information about COM2 pin definition supported DRM modes etc 5 DC switch Optional To safely disconnect the DC circuit whenever necessary 6 Electrical connec tion are...

Страница 17: ...ormity EU EEA Importer UKCA mark of conformity Do not dispose of the inverter together with household waste The inverter does not have a transformer Disconnect the inverter from all the external power...

Страница 18: ...4 LED Indicator The LED indicator on the front of the inverter indicates the working state of the inverter table 2 1 State description of the LED indicator LED color State Definition Blue On The inver...

Страница 19: ...unning information error records etc Parameter configuration The inverter provides various parameter configurations for optimal operation Parame ters can be set via the iSolarCloud App or the cloud se...

Страница 20: ...demand response modes DRMs The in verter detects and initiates a response to all supported demand response modes listed in the following table table 2 2 Demand Response Mode Explanation Mode Explanati...

Страница 21: ...fault value can be modified through the App Auto test for Italy CEI0 21 Grid Code Only The Italy CEI0 21 grid code requires auto test for the inverter before grid connection During the auto test the i...

Страница 22: ...tops working Clear the AFCI alarm so that the inverter can restart the detection The fault arc detection function meets the standard requirements please test under the working conditions as required b...

Страница 23: ...Do not dispose of the original packing case It is recommended to store the device in the original packing case when the device is decommissioned 3 2 Inverter Storage Proper storage is required if the...

Страница 24: ...Always follow the instructions when moving and positioning the inverter Improper operation may cause injuries or serious wounds In the case of poor ventilation the system performance may compromise Ke...

Страница 25: ...ion Never install the inverter in living areas The inverter will generate noise during operation affecting daily life 4 2 2 Carrier Requirements The concrete wall should be capable of withstanding a f...

Страница 26: ...Requirements Reserve enough clearance around the inverter to ensure sufficient space for heat dissipation In case of multiple inverters reserve specific clearance between the inverters 4 Mechanical Mo...

Страница 27: ...ary use other auxiliary tools on site table 4 1 Tool specification Goggles Earplugs Dust mask Protective gloves Insulated shoes Utility knife Marker Wrist strap Wire cutter Wire stripper Hydraulic pli...

Страница 28: ...are of the weight of the inverter Lift the inverter using the handles positioned on both sides of the inverter Move the inverter by one or two people or by using a proper transport tool Do not release...

Страница 29: ...s should be about 70 mm The image shown here is for reference only The actual product received may differ step 2 Place the expansion tubes into the holes Then secure the wall mounting bracket to the w...

Страница 30: ...20 End 4 Mechanical Mounting User Manual...

Страница 31: ...nection Ensure that all cables are voltage free before performing cable connection Any improper operations during cable connection can cause device damage or personal injury Only qualified personnel c...

Страница 32: ...PV input The terminal number depends on in verter model DVC C 2 COM1 Communication accessory port to be connected to WiNet S for countries except Brazil or to WiFi for Brazil DVC A 3 AC AC terminal t...

Страница 33: ...in Cannot be used simultaneously with COM1 port for WiNet S DO NO COM External alarm interface e g light indicator and or buzzer The external DC voltage should not be higher than 30 V and the current...

Страница 34: ...ements for COM2 terminal connection are the same 2 All the AC wires should be equipped with correctly colored cables for distinguishing Please refer to related standards about the wiring color 5 4 Ext...

Страница 35: ...ere are multiple inverters in the PV system connect grounding points of all inverters and the PV array frames to the equipotential cable according to the onsite conditions to im plement an equipotenti...

Страница 36: ...y comply with requirements for which refer to Technical Date Otherwise contact the electric power company for help AC Circuit Breaker An independent three or four pole circuit breaker must be installe...

Страница 37: ...a RCD is not required according to the local standard AS3000 2018 when either of the following installation methods is adopted if the PV array capacitance to ground is large such as a tin roof Use hea...

Страница 38: ...g step 4 Remove 45 mm of the cable jacket and 12 mm 16 mm of the wire insulation step 5 Open the clamp on the spring loaded terminal and insert the wires into the corresponding holes Close the clamp a...

Страница 39: ...ighten the swivel nut to the housing End 5 5 3 Installing the AC Connector 15 kW High voltage may be present in inverter Ensure all cables are voltage free before electrical connection Do not connect...

Страница 40: ...aker to electric board step 5 Make sure all wires are firmly installed via the right torque tool or dragging the cables slightly End 5 5 4 Assembling the AC Connector 15 kW The AC terminal block is on...

Страница 41: ...tep 6 Optional When using a multi core multi strand copper wire cable connect the AC wire head to the cord end terminal hand tight In case of single strand copper wire skip this step step 7 Fix all th...

Страница 42: ...ighten the swivel nut to the housing End 5 5 5 Installing the AC Connector 15 kW High voltage may be present in inverter Ensure all cables are voltage free before electrical connection Do not connect...

Страница 43: ...nsert the AC connector into the AC terminal on the bottom of the inverter until there is an audible sound step 4 Optional Secure the AC connector as shown in the figure below User Manual 5 Electrical...

Страница 44: ...ctric shock The PV array will generate lethal high voltage once exposed to sunlight Make sure the PV array is well insulated to ground before connecting it to the inverter During the installation and...

Страница 45: ...60 V to 1 000 V 5 6 1 PV Input Configuration The inverters SG3 0RT SG4 0RT SG5 0RT SG6 0RT have two PV inputs SG7 0RT SG8 0RT SG10RT SG12RT have three PV inputs and SG15RT SG17RT SG20RT have four PV i...

Страница 46: ...lectrical connection Use MC4 DC terminals if the maximum input voltage is no more than 1 000 V Use MC4 Evo2 DC terminals if the maximum input voltage is greater than 1 000 V To purchase the MC4 Evo2 D...

Страница 47: ...tor See the guidance with the DC protection cover for details PV cables with connectors cannot go through the waterproof terminal on the DC protection cover Rework may cause damage to the connectors w...

Страница 48: ...tep 1 Rotate the DC switch to OFF position step 2 Check the cable connection of the PV string for polarity correctness and ensure that the open circuit voltage in any case does not exceed the inverter...

Страница 49: ...mmended to use both communication methods at the same time The WiNet S communication for Ethernet cannot be used simultaneously with A1 and B1 terminals for RS485 daisy chain For details see the quick...

Страница 50: ...ew the housing from the communication module step 4 Thread the network cable through the swivel nut and gasket Afterwards route the cable into the opening of the sealing Finally insert the cable throu...

Страница 51: ...shake it by hand to determine whether it is installed firmly End 5 7 2 WLAN Communication step 1 Remove the waterproof lid from the COM1 terminal step 2 Install the module Slightly shake it by hand t...

Страница 52: ...tion for Brazil step 1 Remove the waterproof lid from the COM1 terminal step 2 Install the module Slightly shake it by hand to determine whether it is installed firmly as shown below step 3 Refer to t...

Страница 53: ...gy Meter for the feed in power function 5 9 1 Assembling the COM Connector step 1 Unscrew the swivel nut from the connector step 2 Take out the terminal block step 3 Remove the seal and lead the cable...

Страница 54: ...his step step 6 Plug the wires or terminals into the corresponding terminals as shown in the following figure figure 5 5 A2 B2 connection step 7 Ensure that the wires are securely in place by slightly...

Страница 55: ...e COM Connector step 1 Remove the waterproof lid from the COM2 connector step 2 Insert the COM connector into COM2 terminal on the bottom of the inverter until there is an audible click End User Manua...

Страница 56: ...mum number of inverters allowed to be connected in the same point of connection is 5 The RS485 communication cable should be shielded twisted pair cables or shielded twisted pair Ethernet cables The R...

Страница 57: ...land step 4 Remove the cable jacket and strip the wire insulation step 5 Optional When using a multi core multi strand wire cable connect the wire head to the cord end terminal In case of single stran...

Страница 58: ...n place by slightly pulling them and insert the terminal plug into the housing until there is an audible click step 8 For RS485 daisy chain Crimp two wires A to a two wire core end terminal and two wi...

Страница 59: ...he COM Connector step 1 Remove the waterproof lid from the COM2 connector step 2 Insert the COM connector into COM2 terminal on the bottom of the inverter until there is an audible click End User Manu...

Страница 60: ...power supply should comply with related requirements Max voltage 30 V Max current 1 A Refer to section 5 9 1 Assembling the COM Connector for detailed assembling procedure Plug the wires to NO and COM...

Страница 61: ...ug the wires to R and C terminals according the labels on the bottom of the inverter Refer to section 5 10 3 Installing the COM Connector to install the connector 5 13 DI Connection The grid company u...

Страница 62: ...0 None 100 configurable according to need 1 0 0 0 Close S1 100 0 1 0 0 Close S2 60 0 0 1 0 Close S3 30 1 1 0 0 Close S1 and S2 0 disconnect from grid step 1 Unscrew the swivel nut from the connector...

Страница 63: ...he corresponding terminals as shown in the following figure figure 5 10 DI connection step 6 Ensure that the wires are securely in place by slightly pulling them and insert the terminal plug into the...

Страница 64: ...ected the inverters will emergently stop otherwise the inverters will operate normally But if NS Pro tection is enabled on the iSolarCloud refer to NS Protection Passive Valid the inverters will opera...

Страница 65: ...le 6 2 Powering on the System If all of the items mentioned above meet the requirements proceed as follows to start up the inverter for the first time step 1 Turn on the AC circuit breaker between the...

Страница 66: ...are Upa date This is to avoid download failure due to poor on site network signal End 6 4 Creating a Plant Screenshots of creating a plant are for reference only For details refer to the actual screen...

Страница 67: ...l number of the communication device Tap Next after the QR code is identified or the serial number entered is correct and then tap CONFIRM Your mobile device is thus connected to the WiNet S successfu...

Страница 68: ...cessful connection to the inverter WLAN Tap NEXT figure 6 6 Turn on EasyConnect Mode The EasyConnect mode can be used only when the router is 2 4 GHz If the EasyConnect mode fails refer to the WiNet S...

Страница 69: ...ep 2 After download it would take around 15 minutes to update After successful upgrade the screen will show the version numbers before and after the upgrade as well as the upgrade time Tap NEXT figure...

Страница 70: ...rdan_G98 Jordan_G99 Sweden Sweden Belgium Belgium Finland Finland Denmark Denmark Thailand Thailand MEA Thailand PEA Netherlands Netherlands Countries not listed above Other 50Hz or Other 60Hz Request...

Страница 71: ...77 2 2015 AS NZS 4777 2 2020 Australia A AS NZS 4777 2 2020 Australia B AS NZS 4777 2 2020 Australia C ENERGEX Ergon Energy STNW1170 single phase 10 kVA three phase 30 kVA STNW1174 30 kVA Pn 1500 kVA...

Страница 72: ...0kVA for single phase 30 kVA for three phase HPC 9DJ 13 0002 2019 30kVA 1MVA westernpower EDM 33612889 2019 AusNet Services Basic Micro Embedded Generation 2020 For compliance with AS NZS 4777 2 2020...

Страница 73: ...e mail address is required and each e mail address can be registered only once step 1 The App screen will display the added inverter Tap NEXT to configure the plant figure 6 11 Display the Added Inver...

Страница 74: ...will create an account for the end user and send an email to the end user The end user can activate the account via the email The Distributor installer creates plants for the end user and can manage t...

Страница 75: ...Tab the inverter to view the live data about voltage current power or curve figure 6 16 Live Data View Function Setting Contact Sungrow service to enable live data function of devices Once enabled li...

Страница 76: ...66 step 8 Tab BACK to the COMPLETED screen Tab DASHBOARD to return and manually refresh the page until the newly created plant is displayed with status commissioned End 6 Commissioning User Manual...

Страница 77: ...ish communi cation connection to the inverter via Ethernet connection This manual describes only how to achieve near end maintenance via WLAN direct connection Screenshots in this manual are based on...

Страница 78: ...ters share plants etc The distributor installer can help the end user to create plants manage install or main tain plants and manage users and organizations step 1 Tap REGISTER to enter the registrati...

Страница 79: ...nization can you fill in the corresponding code step 5 Tick Accept privacy protocol and tap Register to finish the registration operation End 7 4 Login 7 4 1 Requirements The following requirements sh...

Страница 80: ...serial number or inverter related data information cannot be found unplug and reinsert the Winet S or press the multi function button of the Winet S three times The default account is user and the ini...

Страница 81: ...er right corner and the device will be initialized The App will send start instructions and the device will start and operate step 7 After initialization settings the App will return automatically to...

Страница 82: ...ctual App guidance For some countries you should initialize parameters according to local grid re quirements For details see 6 5 Initializing the Device 7 6 Function Overview The App provides paramete...

Страница 83: ...73 figure 7 4 App Key Function Menu 7 7 Home Home page of the App is shown in the following figure User Manual 7 iSolarCloud App...

Страница 84: ...ws the installed power of the inverter 5 Today yield Shows today power generation of the inverter 6 Total yield Shows accumulative power generation of the inverter 7 Navigation bar Includes menus of H...

Страница 85: ...age and current of MPPT1 and MPPT2 Output Shows daily monthly annual total yield total active reactive appa rent power total power factor grid frequency phase voltage and current Grid information Show...

Страница 86: ...n of Power Curve Item Description Daily Daily curve that indicates the real time power Month Monthly curve that indicates daily yield and equivalent hours in a month Year Annual curve that indicates m...

Страница 87: ...records Select one of the records in the list and click the record to view the detailed fault info as shown in following figure figure 7 9 Detailed Fault Alarm Information Event Record Tap Event Reco...

Страница 88: ...een as shown in the following figure figure 7 11 More In addition to viewing the WLAN configuration and App software version the More screen supports the following operations Set parameters including...

Страница 89: ...etting The correct system time is very important Wrong system time will directly affect the data logging and power generation value The clock is in 24 hour format Software Version Version information...

Страница 90: ...negative or positive voltage please consult the supplier of PV panels After the PID night recovery function is enabled the fault indicator on the inver ter front panel turns green NS Protection Passi...

Страница 91: ...r Fault Switch for activating deactivating the function of active power soft start after a fault occurs On Off Active Power Soft Start Time after Fault The soft start time required for raising active...

Страница 92: ...ve Power Regulation Parameters Parameter Description Range Reactive Power Set ting Persistence Switch for activating deactivating the function of reactive power setting persistence On Off Reactive Pow...

Страница 93: ...ing curve according to local regulations A B C QP_P1 Output power at point P1 on the Q P mode curve in 20 0 100 0 QP_P2 Output power at point P2 on the Q P mode curve in 20 0 100 0 QP_P3 Output power...

Страница 94: ...de curve 0 0 5 0 QU_V1 Grid voltage limit at point P1 on the Q U mode curve in 80 0 100 0 QU_V2 Grid voltage limit at point P2 on the Q U mode curve in 80 0 100 0 QU_V3 Grid voltage limit at point P3...

Страница 95: ...Q U function Yes No Yes Limited by PF QU_Limited PF Value Preset PF value 0 0 95 Curve C is reserved and consistent with Curve A currently figure 7 20 Reactive Power Regulation Curve in Q U Curve 7 10...

Страница 96: ...mobile device step 2 Open the App enter the account and password on the login screen Tap Login to enter the home screen step 3 Tap More Firmware Download to enter corresponding screen on which you ca...

Страница 97: ...s finished the interface will inform you of the upgrade completion Tap Complete to end the upgrade End 7 10 6 Auto test Tap Auto test to enter the corresponding screen as shown in the following figure...

Страница 98: ...88 figure 7 24 Auto test Result Clear Auto test Fault Tap Clear Auto test Fault CONFIRM to clear the auto test fault figure 7 25 Clear Auto test Fault 7 iSolarCloud App User Manual...

Страница 99: ...of the PV string inputs step 3 Wait about 10 minutes until the capacitors inside the inverter completely discharge step 4 Ensure that the DC cable is current free via a current clamp End 8 2 Dismantli...

Страница 100: ...ter Storage for a proper conservation End 8 3 Disposal of the Inverter Users take the responsibility for the disposal of the inverter Some parts and devices of the inverter such as the capacitors may...

Страница 101: ...is equipped with an LCD screen the fault information can be viewed on it The fault codes and troubleshooting methods of all PV inverters are detailed in the table be low The device you purchase may o...

Страница 102: ...local electric power operator 3 Contact Sungrow Customer Service if the preceding causes are ruled out and the fault persists 4 5 Grid Undervoltage Generally the inverter will be reconnected to the gr...

Страница 103: ...urns to normal If the fault occurs repeatedly 1 Check whether the grid supplies power reliably 2 Check whether the AC cable is firmly in place 3 Check whether the AC cable is connected to the correct...

Страница 104: ...tly contact the elec tric power company for solutions 2 If the voltage difference between phases is within the permissible range of the local power company modify the grid voltage imbalance parameter...

Страница 105: ...pectively 548 563 580 595 PV Abnormal Alarm Check whether the voltage and current of the inverter is abnormal to determine the cause of the alarm 1 Check whether the corresponding module is sheltered...

Страница 106: ...Low Ambi ent Temperature Stop and disconnect the inverter Restart the inverter when the ambient temperature rises within the operation temperature range 39 Low System Insulation Resistance Wait for t...

Страница 107: ...return to normal 3 Contact Sungrow Customer Service if the fault persists 84 Reverse Connection Alarm of the Meter CT 1 Check if the meter is wrongly connected 2 Check if the input and output wiring...

Страница 108: ...causes are ruled out and the alarm persists 7 11 16 19 25 30 34 36 38 40 42 44 50 52 58 60 68 85 87 92 93 100 105 107 114 116 124 200 211 248 255 300 322 324 327 401 412 600 603 605 608 612 616 620 6...

Страница 109: ...onding string is of reverse polarity If so disconnect the DC switch and adjust the polarity when the string current drops below 0 5 A 2 Contact Sungrow Customer Service if the preceding causes are rul...

Страница 110: ...A If so check the wiring and configuration of the PV module 4 Check whether the orientation of the PV module is abnormal 9 2 Maintenance 9 2 1 Maintenance Notices The DC switch can be secured with a...

Страница 111: ...pments or the latest revision of the manual which has been clearly and thoroughly understood 9 2 2 Routine Maintenance Item Method Period System clean Check the temperature and dust of the inverter Cl...

Страница 112: ...e Inverter to stop the inverter step 2 Refer to 5 Electrical Connection and disconnect all the cable connections in reverse steps step 3 Refer to 4 Mechanical Mounting and dismantle the inverter in re...

Страница 113: ...e fan If you need to replace the fan use a screwdriver to unscrew the screw at the fan bracket and remove the fan step 8 Install the dust covers and then the fan bracket to the inverter Restart the in...

Страница 114: ...rent 25 A 12 5 A 12 5 A Max DC short circuit current 32 A 16 A 16 A Output AC Nominal AC power 230 V 50 Hz 3000 W 4000 W Max AC output power 3300VA 4400VA Max AC output current 5 1A 6 8A Nominal AC vo...

Страница 115: ...t Weight 18 kg Topology Transformerless Degree of protection IP65 Operating ambient temper ature range 25 to 60 Allowable relative humidity range non condensing 0 100 Max operating altitude 4000 m 200...

Страница 116: ...0 VA for AU BE DE 5500 VA for others 6000 VA for AU BE DE 6600 VA for others Rated AC output apparent power 5000 VA for AU BE DE 5500 VA for others 6000 VA for AU BE DE 6600 VA for others Max AC outpu...

Страница 117: ...ambient temper ature range 25 to 60 Allowable relative humidity range non condensing 0 100 Max operating altitude 4000 m 2000 m derating Cooling method Natural cooling Display LED Communication WLAN...

Страница 118: ...999 VA for AU 7000 VA for BE DE 7700 VA for others 8000 VA for AU BE DE 8800 VA for others Rated AC output apparent power 6999 VA for AU 7000 VA for BE DE 7700 VA for others 8000 VA for AU BE DE 8800...

Страница 119: ...65 Operating ambient temper ature range 25 to 60 Allowable relative humidity range non condensing 0 100 Max operating altitude 4000 m 2000 m derating Cooling method Natural cooling Display LED Communi...

Страница 120: ...11000 VA for others 12000 VA for AU BE DE 13200 VA for others Rated AC output apparent power 10000 VA for AU BE DE 11000 VA for others 12000 VA for AU BE DE 13200 VA for others Max AC output current...

Страница 121: ...mper ature range 25 to 60 Allowable relative humidity range non condensing 0 100 Max operating altitude 4000 m 2000 m derating Cooling method Natural cooling Display LED Communication WLAN Ethernet RS...

Страница 122: ...output power 15000 VA for AU BE DE 16500 VA for others 17000 VA for AU BE DE 18700 VA for others 20000 VA for AU BE DE 22000 VA for others Rated AC output apparent power 15000 VA for AU BE DE 16500 VA...

Страница 123: ...urge protection DC Type II AC Type II Arc fault circuit interrupter AFCI optional General Data Dimensions W x H x D 370 mm x 480 mm x 195 mm Mounting method Wall mounting bracket Weight 21 kg Topology...

Страница 124: ...give SUNGROW a reasonable period to repair the faulty device Exclusion of Liability In the following circumstances SUNGROW has the right to refuse to honor the quality guarantee The free warranty per...

Страница 125: ...sungrowamericas com France Sungrow France Lyon 33437584575 service sungrow emea com Germany Austria Switzerland Sungrow Deutschland GmbH Munich 00800 4327 9289 service sungrow emea com Greece Service...

Страница 126: ...ce Partner Elerex 40 241762250 service sungrow emea com Turkey Sungrow Deutschland GmbH Turkey Istanbul 90 216 663 61 80 service sungrow emea com UK Sungrow Power UK Ltd Milton Keynes 44 0 01908 41412...

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