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Innovating power. 

 
 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

 

 
 
 
 
 
 
 
 
 
 
 
ENGLISH VERSION

 

2021

 

User Manual

 

Product name

 

Item number 

 

Type  

Revision 
Language

 

AX  M2         Series 3-5 kW  

 

SLAGVTSI3K0W1024 
SLAGVTSI5K0W1048 
 
Solar inverter 3-5 kW 
 
V1.7

 

EN

 

Summary of Contents for AX M2 Series

Page 1: ...Innovating power ENGLISH VERSION 2021 User Manual Product name Item number Type Revision Language AX M2 Series 3 5kW SLAGVTSI3K0W1024 SLAGVTSI5K0W1048 Solar inverter 3 5kW V1 7 EN...

Page 2: ...original of this user manual Manufacturer EFFEKTA GmbH Rheinwaldstr 34 78628 Rottweil Germany Telefon 0049 741 17451 0 E Mail info effekta com Legal Disclaimer The distribution and reproduction of thi...

Page 3: ...exts and examples Despite this the possibility of errors cannot be excluded EFFEKTA GmbH does not accept legal responsibility or any liability for missing or erroneous information and the consequences...

Page 4: ...Innovating power AX M2 Series 3 5kW Solar inverter Solar inverter V1 7 Safety Page 4 User Manual...

Page 5: ...verter mode and power forms 22 5 Function Description 23 Possible power sources 23 Possible loads 23 5 1 Additional features 24 5 2 Battery charge valance function equalization 24 5 3 Use instructions...

Page 6: ...ta protocol 97 10 5 1 Download and install 98 10 5 2 Register 102 10 5 4 Display operation modes 105 10 5 5 Display error and warning messages 106 11 Troubleshooting Fault Clearance 112 11 1 Error mes...

Page 7: ......

Page 8: ...ictogram Nature and source of danger Consequences of non observance of instructions Actions to prevent danger DANGER Indicates a hazardous situation The non observance of safety regulations leads to d...

Page 9: ...ordance with the corresponding safety regulations standards and the domestic guidelines The solar inverter can be operated by persons without prior experience Ensure that the location of the solar inv...

Page 10: ...conditions shall be observed to guarantee error free operation Design modifications No design modifications can be undertaken on the device without the knowledge of EFFEKTA GmbH The device can only b...

Page 11: ...nstructions for transport Heavy loads up to a maximum of 18 kg can generally be carried by one person Heavy loads up to a maximum of 32 kg should be carried by two persons whenever possible Heavy load...

Page 12: ...olar inverter in an explosive and or unventilated area Pay attention to the observance of the specified temperature range for the environment Ensure the necessary air circulation The solar inverter mu...

Page 13: ...eriod of at least 2 hours should be maintained before further steps can be undertaken Make sure that the temperature compensation is concluded and that the interior and exterior condensed areas have d...

Page 14: ...nals are energized by the battery feed in the event of of a failure of the on site power supply e g power outage In normal operation the device must not be operated with a dismantled cover The solar i...

Page 15: ...he supply network and the battery feed Residual energy risk of injury Even after the device has been disconnected from the power supply the components of the solar inverter are still energized battery...

Page 16: ...rt circuits on the accumulators touching the current bearing parts can cause severe burns Accumulators should never be linked to heat sources and must not be near flames There is a risk of explosion 1...

Page 17: ...arrange for the immediate replacement Warning labels Meaning Actions Warning of dangerous voltage Battery connections can be energized Switch off the battery insert fuses Check if there is voltage on...

Page 18: ...e manufacturer supplier is not liable for the resulting damages The user alone bears the risk A different use is only permissible with written consent from EFFEKTA GmbH The solar inverter is exclusive...

Page 19: ...ipment Application for vital uses implementation in hospitals or in direct patient care operation in areas with risk of fire or explosion and in areas with extreme heat cold or extreme humidity concep...

Page 20: ...ry 1 2 1 x solar inverter AXM2 1 x UPS User Manual 3 4 1 x communication cable for external display SUB D9 on RJ45 1 x parallel cable 1 x power compensation cable only with AX M2 5000 48 included in s...

Page 21: ...fuse 12 Communication connection for the LCD remote control panel 13 Communication connection for parallel operation optional 14 Connections for power compensation in parallel operation 15 Potential...

Page 22: ...e inverter mode Through this a TN Sload network in the inverter mode suddenly becomes an IT load network Functionally this status is not problematic but with respect to safety it is not acceptable whe...

Page 23: ...of the most important functions e g battery charging power AC solar charging priority and acceptable input voltage based on different applications The following figure shows a configuration example Tu...

Page 24: ...directly integrated in the charge controller It reverses the development of negative chemical effects such as layer formation a condition in which the acid concentration on the bottom of the battery...

Page 25: ...U3 the inverter communicates TIMEOUT and the charge equalization is deactivated 6 Figure 5 Function description Battery bank charge equalization The equalization time can also be set here via menu po...

Page 26: ...ry block Inthe following situation the automatic battery charging is not performed and can lead to a complete discharge of the batteries When there is no mains voltage or when a phase is missing from...

Page 27: ...D3 Green lighted Output supplied by battery 4 Green lighted Output is available in the bypass mode blinking The output is supplied by the battery or by AC in inverter mode Green lighted Battery is ful...

Page 28: ...play symbols Input information Displays the AC input Displays the PV input Displays the input voltage input frequency PV voltage charging current charging capacity battery voltage Configuration progra...

Page 29: ...83V cell The lower bar is lighted and the other three bars blink alternatingly 2 083 2 167V cell Both lower bars are lighted and the other two bars blink alternately 2 167V cell The three lower bars...

Page 30: ...inverter Solar inverter V1 7 Control and display elements Page 30 2 017V cell 50 1 892V cell 1 892V cell 1 975V cell 1 975V cell 2 058V cell 2 058V cell For better comprehension the contents of the L...

Page 31: ...onnected to the mains power supply Consumers loads are supplied by the mains power supply Mains charging mode the battery bank is charged by the mains power supply PV charging mode the battery bank is...

Page 32: ...supply the loads with power Solar energy predominantly supplies the loads with power 01 Priority source of the load supply SUB Solarfirst If the solar energy is not sufficient to supply all connected...

Page 33: ...ging power mains charging power PV solar charging power 60A preset The setting range of the 3KWmodel extends from 10Ato 120A Setting in 10Asteps The setting range of the 5 kWmodel extends from 10Ato 1...

Page 34: ...27and 29are automatically arranged No additional settings are necessary LIb protocol compatible Select Llb when using a battery compatible with the Libprotocol When selected the programs 02 26 27and...

Page 35: ...t When selected and utility is availably the inverter operates in line mode If the mains frequency is instable the inverter operates in bypass mode when the bypass function in program 23 is not prohib...

Page 36: ...current 2A 10A 20A 30A preset 40A 50A 60A 12 Battery bank voltage threshold Return from PV mode or inverter mode in mains mode if the priority in menu point 01 is set to SUb or SbU 3KWPre setting 23...

Page 37: ...e priority in menu point 01 is set to SUb or SbU 3 kWmodel The setting range extends from 24 0Vto 32 0V and the increment of each click is 0 5V Battery fully charged 27 0V preset 5 kW model The settin...

Page 38: ...ging mode is activated SbL Solar energy first for battery UdC Charging of the battery with the mains supply permitted Only PV charging mode priority No mains charging mode permitted SLb Solar energy f...

Page 39: ...e user switches to the display screen it automatically returns to the standard display screen input voltage output voltage after no buttons have been pressed for 1 minute Remain on current menu When s...

Page 40: ...e bypass ECO mode if mains power is available Bypass function on When this option is selected and independent of whether the ON button has been pressed or not the inverter operates in the bypass mode...

Page 41: ...nly available in STAND BY MODE for safety reasons It is recommended to use a maximum of 4 SWRs in parallel mode and 3SWRs in three phase current operation Single If the device is operated alone please...

Page 42: ...phase L2 and 3P3 in program 28 for the inverter connected to phase L3 Ensure that you connect a common power cable to the units located in the same phase DO NOT connect a common power cable between d...

Page 43: ...tivate battery equalizatio n Deactivate battery equalizzation pre set 34 Battery bank voltage during charge equalization 3KW Pre setting 29 2V 5KW Pre setting 58 4V The setting range extends from 24 0...

Page 44: ...ing function in program 33 is activated this program can be configured When activate is selected in this program the battery equalization is activated immediately and displayed on the LCD main page Wh...

Page 45: ...um data protocol number is 1440 If it lies over 1440 the first protocol is rewritten 3 minutes 3 minutes 10 minutes pre set 20 minutes 30 minutes pre set 60 minutes 95 Time setting minutes For the min...

Page 46: ...ternal parameters of the USB disk Procedure on LCD screen LCD screen Step 1 Press button for 3 seconds to call up the USB function setting mode Step 2 Press the button or to call up the setting progra...

Page 47: ...isplayed and all LEDs light up after the process is completed The press the button to return to the main screen or press the button to select no and return to the main screen When a button has not bee...

Page 48: ...5kW Solar inverter Solar inverter V1 7 Control and display elements Page 48 PV current PV current 2 5A PV capacity PV capacity 500W Charging current AC and PV charging current 50A PV charging current...

Page 49: ...d display elements Page 49 Solar inverter V1 7 Charging capacity AC and PV charging capacity 500W PV charging capacity 500W AC charging capacity 500W Battery voltage and output voltage Battery voltage...

Page 50: ...trol and display elements Page 50 Output frequency Output frequency 50Hz Charging on a percentage basis Charging percent 70 Load in VA When the connected load is lower than 1kVA the load shows in VAxx...

Page 51: ...than 1kW 1kW the load shows in Wx xkW Battery voltage DC discharge current Battery voltage 50 0V Discharge current 50A PV energy generated today and load energy emitted today PV energy generated toda...

Page 52: ...his year This year s PV energy 3 88MWh Annual load energy 9 88MWh Total PV energy emitted and total energy of load output Total PV energy 38 8MWh Load output total energy 98 8MWh Real date Real date 2...

Page 53: ...003 03 6 5 Description of the operation modes Operation mode Description Display Standby mode The inverter has not yet been switched on At this time the inverter can charge the battery without AC outp...

Page 54: ...ror or by overtemperature and a short circuit on the output Bypass operation Charging via mains and PV energy Charging via PV Bypass ECO mode Power of the device The batteries are charged via PV or ma...

Page 55: ...inverter V1 7 Charging via mains energy Battery mode The device supplies power from the battery and PV system Power from battery and PV energy PV energy supplies the loads with power and charges the...

Page 56: ...does not have functional impact protection As a result all devices that fall or tip over before their initial operation must be inspected by EFFEKTA Regeltechnik GmbH The same applies to damages to th...

Page 57: ...e Lift the unit off the palette by means of a forklift or lift truck It is important to observe here that the pick up points are carefully chosen and are eventually subject to floor areas in order to...

Page 58: ...instructions Do not mount the inverter on flammable building material Mount the device on a stable surface e g concrete Install this inverter at eye level to be able to read the LCD display at any ti...

Page 59: ...levant sections of the User Manual To reduce the risk of injury only charge rechargeable lead acid batteries Other types of batteries can explode and cause injury and damage Do not disassemble the dev...

Page 60: ...e DC overcurrent protection or an isolating device between the battery and the inverter In many applications an isolating device may not be necessary Nevertheless the installation of an overcurrent pr...

Page 61: ...ttery with a capacity of at least 200 Ah for the 3 kW model and a battery with a capacity of at least 200 Ah for the 5 kW model Insert the ring cable lug of the battery cable into the battery port of...

Page 62: ...neutral line N by 3 mm WARNING Risk of injury due to electricity Install a separate AC isolating device between the inverter and the AC input power source This ensures that the inverter can disconnec...

Page 63: ...n from the plus and minus lines WARNING Risk of injury due to electricity Install a separate DC isolating device between the inverter and the PV module All the wiring must be carried out by qualified...

Page 64: ...inus pole of the PV inputconnector Step 3 Insert the AC input cable according to the polarities indicated on the terminal block Tighten the terminal screws Connect the PE conductor first PE Mass yello...

Page 65: ...ging device triggers an overload fault and interrupts the output to protect your device but this still sometimes causes internal damage to the air conditioner CAUTION Damage to devices due to incorrec...

Page 66: ...an be operated parallel to each other in the three phase system Seven units can be maximumly connected in one phase The maximum supported output power is 45 kW 45 kVA a maximum of 35kW kVA in one phas...

Page 67: ...you find the following items in the package only for AX M2 3000 24 The parallel circuit board is already installed in AX M2 5000 48 in the inverter as standard Step 2 Remove the lower housing by remo...

Page 68: ...ews Remove the cover of the parallel communication unit Step 5 Install the new parallel circuit board Secure the parallel circuit board with 2 screws Step 6 Connect the 2 pole and 14 pole cable again...

Page 69: ...each inverter Model Cable size Ring cable lug Tighten ing torque Cable mm2 Measurements D mm L mm 3KW 1 70mm 70 6 4 49 7 2 3Nm 2 25mm 25 6 4 49 7 5KW 1 70mm 70 6 4 49 7 2 3Nm 2 25mm 25 6 4 49 7 Recom...

Page 70: ...s 6 Devices 7 Devices 8 Devices 9 Devices 3KW 40A 80A 120A 160A 200A 240A 280A 320A 360A 5KW 50A 100A 150A 200A 250A 300A 350A 400A 450A Recommended battery capacity Ensure that all inverters use the...

Page 71: ...Solar inverter V1 7 9 5 2 Connection examples 9 5 2 1 Parallel operation 1 phase 2x inverters in parallel Figure 11 Connection Several devices in parallel mode Connection examples Mains connection Loa...

Page 72: ...V1 7 Connection Page 72 3x inverters in parallel Figure 12 Connection Several devices in parallel mode Connection examples Mains connection Communication connection 4x inverters in parallel Figure 13...

Page 73: ...age 73 Solar inverter V1 7 5x inverters in parallel Figure 14 Connection Several devices in parallel mode Connection examples 6x inverter in parallel Figure 15 Connection Several devices in the parall...

Page 74: ...erter Solar inverter V1 7 Connection Page 74 7x inverters in parallel Figure 16 Connection Several devices in parallel mode Commenction examples 8x inverters in parallel Figure 17 Connection Several d...

Page 75: ...arallel mode Connection examples 9 5 2 2 Parallel operation 3 phase 3x inverters in each phase Figure 19 Connection Several devices in parallel mode Connection examples WARNING Do not connect the curr...

Page 76: ...ection Page 76 Two inverters in each phase Figure 20 Connection Several devices in parallel mode Connection examples Seven inverters in one phase and each with one inverter for the other two phases Fi...

Page 77: ...inverters in one phase and each with one inverter for the other two phases Figure 22 Connection Several devices in parallel mode Connection examples Three inverters in one phase two inverters in the...

Page 78: ...lar inverter Solar inverter V1 7 Connection Page 78 Three inverters in one phase and only one inverter each for the remaining two phases Figure 24 Connection Several devices in parallel mode Connectio...

Page 79: ...nnovatingpower Connection Page 79 Solar inverter V1 7 Two inverters in two phases and only one inverter for the remaining phase Figure 25 Connection Several devices in parallel mode Connection example...

Page 80: ...2Series 3 5kW Solar inverter Solar inverter V1 7 Connection Page 80 Two inverters in one phase and only one inverter each for the residual phases Figure 26 Connection Several devices in parallel mode...

Page 81: ...7 One inverter in each phase Figure 27 Connection Several devices in parallel mode Connection examples WARNING Do not connect the current sharing cable between the inverters that are in different pha...

Page 82: ...r AXM2Series 3 5kW Solar inverter Solar inverter V1 7 Connection Page 82 9 6 Connecting the installation Step 1 Once you have connected all the cables reattach the bottom cover Mount the cover using t...

Page 83: ...installed at a different site with an optional communication cable Step 1 Remove the screws on both sides of the lower housing Pull the housing cover up Step 2 Remove the screws from the top of the di...

Page 84: ...4 Step 4 Mount the adapter plate Drill two holes distance 70 mm on the preferred location Secure the adapter plate here Place the panel on the adapter plate and secure it with a suitable screw Step 5...

Page 85: ...accompanying CD into a computer Follow the instructions on the screen You can find details about the operation in the user manual for the software on the CD 9 8 2 Wi Fi connection The solar inverter...

Page 86: ...es to define baud rates and battery group addresses When the switch position is turned downward for the OFF position this indicates 0 When the switch position is turned upward for the ON position this...

Page 87: ...ust be set up in the third group The slave batteries are not restricted 0 0 1 Operation for several groups In this setting the master battery must be set up in the fourth group The slave batteries are...

Page 88: ...ery type PLYONTECH Step 1 Use a specially manufactured RJ45cable to connect the inverter and the lithium battery Step 2 Switch the lithium battery on Step 3 Press the Start button on the lithium batte...

Page 89: ...Page 89 Solar inverter V1 7 Step 5 Select the PYL battery type see Program 5 Chapter 5 2 Wait ca 60 seconds If the communication between the inverter and the battery is successful the battery symbol...

Page 90: ...ge 90 9 8 3 2 Installing battery type WECO Step 1 Use a specially manufactured RJ45cable to connect the inverter and the lithium battery Step 2 Switch the lithium battery on Step 3 Switch the inverter...

Page 91: ...e battery is successful the battery symbol blinks on the LCD display 9 8 3 3 Installing battery type SOLTARO Step 5 Use a specially manufactured RJ45 cable to connect the inverter and the lithium batt...

Page 92: ...nd the battery group number will be displayed by the main CPU version test as shown below Selectable information LC display Battery pack number and battery group number Battery pack number 3 Battery g...

Page 93: ...he communication between the inverter and the battery was successful code 70 is displayed for the charging of the battery If the battery status cannot be discharged through successful communication be...

Page 94: ...warning with battery USB voltage power or Mains solar energy first closed open Battery voltage Setting in Program 13 or battery charging reaches state of suspension Program Battery voltage open closed...

Page 95: ...properly and the batteries are connected properly press the on off button to switch on the device 10 2 Update inverter firmware if recommended Step 1 Please plug the USB storage in the USB port Press...

Page 96: ...Press the button The aim of this function is to overwrite all the parameter settings TEXTfile ATTENTION Function disturbances due to improper parameter values Unauthorized changes in the setting can...

Page 97: ...e LCD shows Press the button to reconfirm the selection Step 2 Press the button to select yes LED 1 blinks once per second during the process Once this action has been completed the display shows all...

Page 98: ...the solar inverter and a monitoring platform possible The main functions of the app are Display device status during normal operation Configure device settings Inform users when a warning or an alarm...

Page 99: ...he connection symbol to open the software Tap on Registration on the screen to carry out the user registration Step 3 Enter all the required information Scan the remote box PN by tapping on the symbol...

Page 100: ...inverter Solar inverter V1 7 Operation Page 100 Step 4 Tap on Go now to continue with establishing the local Wi Fi network connection Step 5 Follow the instructions Step 6 Select the network Q0 Step...

Page 101: ...tion Page 101 Solar inverter V1 7 Step 8 Tap on the button if the WiFi module is successfully connected Step 9 Tap on the symbol to select the name of your local Wi Fi router to access the Internet an...

Page 102: ...ar inverter Solar inverter V1 7 Operation Page 102 Step 10 Tap on Confirm to complete the Wi Fi configuration 10 5 2 Register Step 1 Enter the user name and password to register Check Remember me so t...

Page 103: ...ess the Overview page to gain an overview of your monitoring devices such as e g general operation situation energy information current capacity today s capacity 10 5 3 Add devices Step 1 Tap on the s...

Page 104: ...r inverter Solar inverter V1 7 Operation Page 104 Step 2 Scan the barcode on the device The barcode is located on the underside the display panel Step 3 Tap Confirm after the scanning the part number...

Page 105: ...s the load via the mains power supply or without a PV source The mains power supply or a PV source can charge the battery on standby mode Step 4 Battery mode The inverter supplies the load from the ba...

Page 106: ...ng messages Schritt1 Tap on the symbol in the upper right corner to call up the device alarm page Then you can check the alarm history and detailed information 10 5 6 Change the device name Step 2 Tap...

Page 107: ...attery capacity Charging current Output voltage etc Production information shows the model type inverter type Main CPU version Wi Fi CPU version and Secondary CPU version etc Rated information shows i...

Page 108: ...vate on the screen Change the values by clicking on the arrows or by directly entering the numbers in the column Every function setting is saved by clicking on the Settings screen Parameters Descripti...

Page 109: ...e battery charging parameters The selectable values can vary in different inverter models Information can be found in the product manual Max AC charging current Float charging voltage Bulk chargingvol...

Page 110: ...minute Bypassfunction When activated the device switches to line mode when an overload occurs in battery mode Beepswhen primary source is interrupted When activated the buzzer sounds an alarm when th...

Page 111: ...1 7 Effects Changes the lighting effects Colorselection Adapts the color selection to the power source to display the power source and the battery status Return to standard mode This function returns...

Page 112: ...en the issue first occurred Information displayed in the LCD LED area of the operation unit status or warning and alarm message Power supply status load status environmental conditions regarding tempe...

Page 113: ...04 Battery voltage is too low 05 Short circuit at output or overtemperature 06 Output voltage is too high 07 Overload time detected 08 Bus voltage is too high 09 Bus soft start failed 50 PFC overcurre...

Page 114: ...different 85 Asymmetry of the AC output current 86 The setting of the AC input mode is different 11 2 Pylontech battery warning messages Be sure to use the original communication cable supplied with t...

Page 115: ...p the charging of the battery If the battery status must be charged after the communication between the inverter and the battery was successful code 70 is displayed for the charging of the battery If...

Page 116: ...Symbol 01 Ventilator is blocked or defective Three times per second 02 Overtemperature None 03 Battery is overloaded Beeps once per second 04 Low battery status Beeps once per second 07 Overload Beep...

Page 117: ...nnection reversed Mains power available device is in operation but in battery mode The input voltage is displayed as 0 on the LCD and the green LED is blinking The line protection has been activated C...

Page 118: ...e air circulation ventilators and room temperature too high Error code 03 The battery bank is overloaded Switch the system off and check the inverter and the battery bank The battery bank voltage is t...

Page 119: ...e versions on each inverter Update all inverters to the same firmware 72 The output current of the inverter is different Restart the inverter Check the connections 80 Error in communication bus CAN Ch...

Page 120: ...ven after the device has been disconnected from the power supply the components of the solar inverter are still energized batteries and are therefore dangerous Before performing maintenance and or ser...

Page 121: ...endanger the safety of the users or the solar inverter 12 2 General information Electrostatic discharges can cause damages to components For this reason specific preventative measures are necessary w...

Page 122: ...ransfer the solar inverter to a licensed private or public waste collector 13 2 Environmental requirements When disposing items only those processes or methods may be selected that do not harm people...

Page 123: ...ff voltage 280Vac 7V Upper reverse voltage 270Vac 7V Max AC input voltage 300Vac Nominal input frequency 50Hz 60Hz Lower frequency 46 56 1Hz Lower reverse frequency 46 5 57 1Hz Upper cut off frequency...

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Page 125: ...150 load Overcurrent power 2 nominal power for 5 seconds Nominal DC input voltage 24Vdc 48Vdc Working range 20Vdc 34Vdc 40Vdc 66Vdc Cold start voltage 23Vdc 46Vdc Lower DC warning voltage 22 5Vdc 22 0...

Page 126: ...mode 14 3 1 Mains charging mode Model 3KW 5KW Charge power nominal input voltage Default setting 30 A max 60A Bulk charging voltage Wet battery 29 2Vdc 58 4Vdc AGM Gel battery 28 2Vdc 56 4Vdc Charge...

Page 127: ...5KW Nominal power 1500W 4000W Maximum PV charging current 60A 80A Efficiency 98 0 max Max input voltage UOCV 145Vdc Effective operation range MPPT UOP 30 115Vdc 60 115Vdc PV input accuracy 2V Chargin...

Page 128: ...verse voltage 270Vac 7V Nominal input frequency 50Hz 60Hz Lower cut off frequency 46 56 1Hz Lower reverse frequency 46 5 57 1Hz Upper cut off frequency 54 64 1Hz Upper reverse frequency 53 63 1Hz 14 5...

Page 129: ...Innovatingpower Technical Data Page 127 Solar inverter V1 7 14 6 Dimensions Figure 27 Technical data Dimensions 1 303 mm 2 140 mm 3 525 mm 4 165 mm...

Page 130: ...inverter Technical Data Page 128 Solar inverter V1 7 Declaration of Conformity Units marked with a CE label meet the standards and guidelines harmonized within the EU The EU Declaration of Conformity...

Page 131: ...Innovatingpower Technical Data Page 129 Solar inverter V1 7...

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