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USER MANUAL

Cable end cap is used for watertight closing of exposed
cable end. Simply push the cable into end cap, the wires
inside the cable are automatically separated to avoid
short circuits and tight the nut.

Always use original trunk cable with this end cap.
Waterproofness is not guaranteed with other cable types

Cable joiner is used to join two ends of trunk cable. It is
simple to use and after assembled, IP67 protected cable
joining tool.

To assemble two cable ends together, please consult
bellow picture

To disconnect Letrika Micro inverter
or Junction cap from trunk cable.

CAP-WTCASMA2

CX-04BCM32-7002

Cable end cap

Cable joiner

AC TRUNK CABLE UNLOCKING TOOL

APPENDIX

Содержание 260

Страница 1: ...USER MANUAL SOLAR MICRO INVERTER 260 ...

Страница 2: ...integrators and other qualified personnel with knowledge of local standards and regulations They should always follow local electrical safety and fire protection guidelines Only technically qualified personnel should install or replace Letrika Micro inverters This manual only describes the product and is not a warranty of performance or characteristic Contents of the manual has been reviewed again...

Страница 3: ... grid 14 Simple single phase connection with I P S device 15 Single phase connection without I P S interface to grid 15 Three phase connection 16 Trunk cable extension and cable end covering 17 Commissioning 18 Preliminary checks 18 Sequence of operations 18 Troubleshooting 19 List of errors in alarm list 19 Storage 22 Disposal 22 Maintenance 22 Registration and warranty 23 Contact 23 Appendix 24 ...

Страница 4: ...standby consumption WMBUS standard wireless communication DC circuit is isolated and insulated from ground Quick installation Full power at ambient temperature 65 C Die cast aluminum enclosure with completely potted electronics IP 67 dust tight no ingress of dust immersion in water up to 1 m for 30 minutes Integrated foil capacitors allowing very long life time 25 years Design flexibility Letrika ...

Страница 5: ...ter is individual power unit operating at maximum available power The operation of such power unit is independent and does not affect the operation and performance of other power units PV modules of different characteristic can be installed in different position and orientation without interfering with each other The operation of micro inverters can be controlled via Linux based Gateway Gateway co...

Страница 6: ...F module This delay is necessary for WMBUS module to stabilize operating parameters and also to avoid unnecessary power ON OFF INTRODUCTION 1 3 Hardware Structure of Solar Micro Inverter 260 cycling in case of low irradiation WMBUS module converts inverter serial data into 868Mhz data stream according to WMBUS standard Data from micro inverter can be received by Letrika data gateway or by any devi...

Страница 7: ...phenomena s and grid over voltages It is strongly recommended to install external overvoltage protection class II on AC side it is also condition for the validity of Limited Warranty Solar Micro inverter is in standby until there is insufficient irradiance and a specific minimum voltage is present in the inverter The consumption in standby is 0W The micro inverter starts to fully operate when the ...

Страница 8: ... legend used in this manual and or equipment 2 2 Safety and general warnings WARNING Inverter PV side is galvanically separated from dangerous voltages however do not attempt to disconnect PC cables from inverter during operation WARNING Always mount grid disconnection switch be tween micro inverter installation and grid WARNING There are no user serviceable parts inside Letrika micro inverter It ...

Страница 9: ...ith overcurrent protection according to PV plant power and local standards CAUTION Always fix cables to the frame Do not allow PV and grid cables to float free CAUTION If equipment is not used as specified in this manual and other Letrika documents protection provided by the equipment may be impaired The installation must be wired according to local regulations and standards where inverters are mo...

Страница 10: ... modules the micro During installation it is a good idea to follow a check list of operations We will describe general approach that allows installation of the inverters that is easy to manage and maintain 3 Installation procedure 3 1 Compatible PV modules INSTALLATION PROCEDURE inverter power is not entirely used efficiency is lower and this affect the production of electricity When higher power ...

Страница 11: ...k cable If the layout is portrait the distance between the connections on trunk cable are every 1 05 m If the layout is landscape the distance between the AC connections on trunk cable are every 1 70 m or 2 00 m 3 1 1 Landscape versus portrait panels placement INSTALLATION PROCEDURE Landscape panels orientation Portrait panels orientation ...

Страница 12: ...ed groove If screw is inserted it is easier to place and fix the micro inverter Screws must be inserted before the frame is assembled since they can t be moved across frame junctions If M8 or M6 nuts are inserted into profile care should be taken during screw length selection since long screws can damage the AL profile or they cannot fix micro inverter adequately Use M8 or M6 screws and nuts Do no...

Страница 13: ...verter on bottom side of Al support decrease heat transfer from micro inverter to solar panel increasing efficiency on high ambient temperatures Mount micro inverter in locations which are out of direct sunlight We do not recommend mounting micro inverter directly between panel and roof surface since air irculation is not guaranteed Efficiency of the system will be decreased and the micro inverter...

Страница 14: ...connector is latched Micro inverter must be connected to the utility grid in accordance with local standards and permissions Letrika Solar micro inverter 260 has built in interface protection system IPS according to VDE 4105 All frequency voltage and anti islanding protections are embedded inside micro inverter Also power factor voltage control functions are built in Inside micro inverter is a rel...

Страница 15: ...p Since Letrika micro inverters have built in I P S according to VDE 4105 standard with incorporated disconnection relay they can be used if a local standard permits 3 3 1 Simple single phase connection with I P S device 3 3 2 Single phase connection without I P S interface to grid I P S device may vary from country to country please check with local distributor company without additional I P S de...

Страница 16: ... operate even in event of one or two phase failure it is generally not recommended and in 3 3 3 Three phase connection some countries also forbidden to operate with one or more phases interrupted or in short circuit It is recommended to use protection against unbalanced load INSTALLATION PROCEDURE ...

Страница 17: ...only by using trunk cable Always use original cable joiner CX 04BCM32 7002 to ensure trunk cable join point water tightness 3 3 4 Trunk cable extension and cable end covering Insert CAP WTCASMA2 on exposed cable end since original water tight cap ensure IP67 protection of exposed trunk cable end If trunk extension is done by using customer supplied cable please note that the cable must be UV reinf...

Страница 18: ...e system and any other possible isolation switches Proceed with configuration of Gateway Details are described in Gateway User Manual Commissioning should be done by technically qualified personal Connecting cable output AC and DC voltage input cables should be carried out in accordance with the manufacturer s instructions AMPHENOL 4 Commissioning 4 1 Preliminary checks 4 2 Sequence of operations ...

Страница 19: ...by software Possible cause is short circuit on grid lines or sudden voltage drop on grid lines Proposed action Check connecting lines Check surge protections on lines Check external power capacitors banks for power factor corrections Scan grid voltage for deeps 2 ERR_OVER_ CURRENT_HW Over current is detected by hardware Possible cause is very high short circuit current very deep voltage transients...

Страница 20: ... power section reached maximum allowed temperature approx 90 degrees centigrade Proposed action check ambient temperature is lower then 65 degrees check inverter exposure to direct sun light air is not circulating across inverter enclosure 8 ERR_PARAMETERS_ CORRUPTED Internal Country and other parameters corrupted Internal FRAM memory corrupted Proposed action Replace inverter 9 ERR_ADC_OFFSET_ ER...

Страница 21: ...ion from DCDC DSP controller Proposed action Wait inverter to reset during the night If condition persist replace inverter 15 ERR_GRID_DISCON NECTED No grid Grid is disconnected or internal PLL can not catch any valid sinusoidal signal Proposed action No grid connected very distorted grid current very low grid voltage 16 ERR_IGRID_DC_COMPO NENT DC current injected to grid is too high Internal circ...

Страница 22: ...omplete procedure after lifetime should comply with Directive 2012 19 EU of the European Parliament and of the Council of 4 July 2012 on waste electrical and electronic equipment WEEE 6 Storage 8 Maintenance 7 Disposal Micro inverter can be send back to manufacturer or provider for disposal Delivery costs in this case are covered by sender or owner Component and material identification Housing Alu...

Страница 23: ...arranty conditions are available on the website http letrikasol com en warranties 9 Registration and warranty 10 Contact Letrika Sol d o o Polje 15 5290 Sempeter pri Gorici Slovenia E info letrikasol com www letrikasol com ...

Страница 24: ...z 47 5 Hz 55 Hz According to standards Voltagerange240Vsystems 180V 270V Accordingtostandards Reactivepowerregulation 1 Unity 0 8cap 1 0 8ind Dynamicregulation THDoddharmonics 3 Efficiencymax 96 1 EfficiencyCEC EURO 95 5 95 3 MPPTefficiency 99 9 Panel sripplecurrent 50 mA Ambienttemperature 40 C 65 C Cooling Natural Communication WMBUS 868 Mhz optional 915 Mhz Compliesto EN 50438 VDE 4105 CEI 0 21...

Страница 25: ... standard VDE4105 other CEI for CEI 0 021 G83 CSL ALTW type of AC connector G for grid connection P N 11 261 001 AEI1105 APPENDIX Solar Micro Inverter 260 was tested in accreditation laboratory according to international standards All certificated can be downloaded from http letrikasol com en certificates Certificates Weight cca 2 kg ACconnectionsystem Amphenol LTW VTC Wieland RST DCconnectionsyst...

Страница 26: ...26 USER MANUAL PV connectors Amphenol H4 are compatible with all MC4 standard connectors Compatible DC connector systems APPENDIX Dimensions ...

Страница 27: ...rawings for details Compatible AC connector system Trunk cable data Two types of cables are available UL and VDE approved while connectors are always the same Cables and plastic materials are chosen and tested under most harsh conditions imaginable and they are UV salt fog oil temperature and bending resistant Please do not cut disassemble or modify connectors and cables Do not use matching produc...

Страница 28: ...n unconnected T junctions on trunk cable White plastic cap originally attached on T junctions IS NOT watertight it is there only for dust and mechanical protection during transport and installation In case some T junctions are left unconnected use this cap to water tight the junction CAP WSMMFLA P1 Accessories Waterproof cap Figure 13 ALTW trunk cable drawing ...

Страница 29: ...k cable with this end cap Waterproofness is not guaranteed with other cable types Cable joiner is used to join two ends of trunk cable It is simple to use and after assembled IP67 protected cable joining tool To assemble two cable ends together please consult bellow picture To disconnect Letrika Micro inverter or Junction cap from trunk cable CAP WTCASMA2 CX 04BCM32 7002 Cable end cap Cable joiner...

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