Solar Microinverter Letrika 260

Quick manualThis quick manual provides only some basic information for installers. Installer must read and fully understand Instruction manual which can be downloaded from www.letrika.com.

All electrical installation must be done in accordance with national and local codes and requirements. Installation must be performed by trained professionals.

Symbol used:WARNINGDangerous voltage. Staff must take all precautions and protections against high voltage electric shock.

CAUTIONGeneric danger - Important safety information. Staff must be careful while operating in situations marked with this symbol.

HOT SURFACEDanger of burns, do not touch product. Switch of microinverter and wait at least 15 minutes.

Installation Manual shall be consulted that must be available for future use and not damaged

Connection to ground

Components of the Microinverter Solar System PV module with MC4 connectors Letrika 260 microinverter M8 screw, nuts and washers mounting accessories depend on racking system Trunk Cable with preinstalled connectors Cable End Cap for each branch Cable Joiner Waterproof cap -one for each unused connector on the cabling Roof junction box IP67 min IPS interface protection system or Simple Grid disconnection switch Sungate Communications Gateway Router or Repeaters to extend the communications grid Ethernet cable

Tools Mounting tools - Hexagonal key for mounting the inverter to Electrical power tools (terminal screw driver,

Description of Microinverter Solar System

Microinverters are installed on the mounting rack behind the solar modules.For each Solar panel there is one microinverter which converts DC power from PV module into high quality AC power for supply to electrical grid.Microinverters are connected in parallel to AC cable.

Sungate communicates over Wi-Fi with Letrika microinverters. It receives performance data, all data are securely saved in internal memory and on SD card. All the data can be viewed and analyzed trough any web browser. Performance of each PV module is controlled individually.

Installation

1. Mounting Microinverter Ensure that the data on the label on the microinverter match those of PV panel and AC grid. Check PV module voltage and current range are compatible. Mark the center of each PV module for positioning of Microinverter. Attach the Microinverter on racking with two M8 or M6 screws and sliding blocks, label on microinverter must face up We strongly suggest to place microinverter at least 15mm bellow the panel surface and to leave at least 20mm between inverter and underneath surface to avoid panel heating and microinverter overheating

Cabling system Use portrait cable or landscape cable, lay trunk cable on the location required, connector must be aligned with location of microinverters. Chech that maximum number of inverters in branch is not exceeded Securely fasten cable with tie racks or clips to the mounting rack

2. Connecting

Connection of microinvertersAC connection connect microinverter to AC trunk cable terminate end of the cable with End Cap, unused connector must be covered with Waterproof cap connect the other side of the trunk cable to junction box ground each micro-inverter according to local standards

Before connecting cables test the continuity of cables and isolation resistance of cables and the whole system.

DC connection Connect DC cables from PV module to microinverters, be sure of type of DC connector, must be MC4, ensure that connectors are securely locked

Documenting Use one of two labels with serial numbers to identify exact location of micro-inverter, place on the sheet to show physical location of the panels.

Commissioning

Switch on AC miniature circuit breaker in junction box. Switch on main AC breaker.

Communications Plug in Sungate and connect to internet with Ethernet cable. Check Sungate display AC grid is not necessary for communication between microinverters and gateway check the strength of communication If signal is weak install the repeater Set up monitoring system Sungate? Follow Sungate instructions for the new installation

Notify the Letrika Sol support team that the installation has be set Send to Letrika Sol after installation.

ParameterValue

1Recommended rated input DC power200 W - 275 W

2Max. solar panel powerup to 310 Wp

3Max. DC input voltage60 V

4MPPT range22 V-55 V

5Min. start voltage21 V

7Max. DC short circuit current12 A

8Max input current10.5 A

9Operating range15 V- 60 V

10Nominal apparent AC power290 VA

11Nominal real AC power260 W

12Nominal reactive AC power (at power factor 0.9)125 VAR

13 Max. reactive power 0 260 VAR (cap., ind.)

14Max. output current1.15 A

16Frequency range50 Hz (47.5 Hz-55 Hz)According to standards

17Voltage range 240 V system180 V 270 VAccording to standards

18Reactive power regulation1 (Unity)0.8 cap. 1 ... 0.8 ind.Dynamic regulation

19THD odd harmonics< 3 %

20Efficiency max.96.1 %

21Efficiency CEC/EURO95.5 % / 95.3 %

22MPPT efficiency99.9 %

23Panel's ripple current50 mA

24Ambient temperature-40 C +65 C

25CoolingNatural

26CommunicationWMBUS 868 Mhz (optional 915 Mhz)

27

Complies to

EN 50438, VDE 4105, CEI 0-21, G83/2, EN 62109-1, EN 62109-2,EN 61000-6-3,EN 61000-6-1, RoHS

26Lifetime expectancy25 years

27Limited warranty25 years

28HousingDie casted aluminum

29IP protection IP67, completely potted (waterproof)

30Dimensions (without mounting brackets)209x221x40mm

31Mounting bracketsM8x16, distance 130 mm

32Weightcca 2 kg

33AC connection systemAmphenol LTW VTC/Wieland RST 20i3

34DC connection systemAmphenol LTW H4

35Night consumption (with integrated relay)0 W

36Integrated Interface Protection System/Anti-islanding protectionas for VDE 4105

Quick manualv1.0.0 nov 20144