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Summary of Contents for LETRIKA 260
- Page 1 SOLAR MICRO INVERTER 260 USER MANUAL...
- Page 2 We reserve the right to change this document at any time without notice. Trademarks Letrika Sol d.o.o. is registered trademarks of the Mahle Letrika d.o.o.. All other brand or product names mentioned in this document may be trademarks or registered trademarks of their respective holders.
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Page 3: Table Of Contents
USER MANUAL Table of contents Introduction Main features PV Power Plant with Letrika Solar Micro inverters 260 Hardware Structure of Solar Micro Inverter 260 Safety Symbols legend used in this manual and/or equipment Safety and general warnings General installation safety guidelines... -
Page 4: Introduction
• 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 50 years’ experience in automotive and heavy duty electronics and electro mechanics Protection Function • Over and under voltage protection •... -
Page 5: Pv Power Plant With Letrika Solar Micro Inverters 260
INTRODUCTION USER MANUAL 1.2 PV Power Plant with Letrika Solar Micro inverters 260 PV power plant with Letrika Solar Micro inverters 260 PV modules of different characteristic can be installed in consists of several components. PV module directly different position and orientation without interfering with convert sunlight into DC electricity, micro inverters each other. -
Page 6: Hardware Structure Of Solar Micro Inverter 260
DC side decouples PV panel from high WMBUS standard. Data from micro inverter can be received frequency transients during DCDC converter switching. by Letrika data gateway or by any device compatible with WMBUS standard. DC side power supply of the primary (DCDC) logic is active until minimum panel voltage is reached. - Page 7 INTRODUCTION USER MANUAL processor with special algorithm is used to achieve high Solar Micro inverter is in standby until there is insufficient efficiency and best possible harvest from sun. irradiance and a specific minimum voltage is present in the inverter. The consumption in standby is 0W. The micro Differential mode filters are used for filtering 50 Hz current inverter starts to fully operate when the sun begins to...
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Page 8: Safety
WARNING structure. Do not cut, bend or modify original connectors and/or cables supplied with inverters. In case of fault on PV installation with Letrika WARNING micro inverters, do not attempt disconnect PV or grid cables from inverters or junction boxes... -
Page 9: General Installation Safety Guidelines
CAUTION Inverters with damaged enclosure or wiring If equipment is not used as specified in must not be repaired and must be returned this manual and other Letrika documents, to producer protection provided by the equipment may WARNING CAUTION be impaired. -
Page 10: Installation Procedure
However some thin film panels with output approx. 20 minutes at 30°C. voltage of approx. 50V can still be used with Letrika micro During selection of PV modules power consider also inverters. Thin film modules have a risk of TCO corrosion. -
Page 11: Landscape Versus Portrait Panels Placement
INSTALLATION PROCEDURE USER MANUAL 3.1.1 Landscape versus portrait panels placement Portrait or landscape layout could be used when installing more PV panels. Layout of PV panels will affect the choice of trunk cable. If the layout is portrait the distance between the connections on trunk cable are every 1,05 m. -
Page 12: Mounting Hardware Compatibility
USER MANUAL INSTALLATION PROCEDURE 3.1.2 Mounting hardware compatibility Letrika Solar micro inverter is designed to be compatible with most standard Al frames. During frame selection few important thing must be observed. 3.1.2.1 Al profile selection Al profile must have a T shaped groove for M8 or M6 nut. -
Page 13: Inverter Cooling Consideration
INSTALLATION PROCEDURE USER MANUAL 3.1.2.3 Inverter cooling consideration For proper inverter operation and full performance delivery some mounting guidelines must be observed. Although micro inverter does not need any forced ventilation and is cooled by natural heat exchange with surrounding air, it still need some air around its aluminum enclosure to cool efficiently. -
Page 14: Connecting Cables To Micro Inverter
Letrika Solar micro inverter 260 has built in interface be connected to standard ALTW PT 3 wire system allowing protection system (IPS) according to VDE 4105. -
Page 15: Simple Single Phase Connection With I.p.s. Device
Single phase system with I.P.S 3.3.2 Single phase connection without I.P.S. interface to grid Since Letrika micro inverters have built in I.P.S. according without additional I.P.S device interfacing to grid, only grid to VDE 4105 standard with incorporated disconnection disconnection switch must be used. -
Page 16: Three Phase Connection
USER MANUAL INSTALLATION PROCEDURE 3.3.3 Three phase connection Micro inverters can be connected also on three phase grid some countries also forbidden to operate with one or more system. Although they can operate even in event of one or phases interrupted or in short circuit. It is recommended to two phase failure, it is generally not recommended, and in use protection against unbalanced load. -
Page 17: Trunk Cable Extension And Cable End Covering
INSTALLATION PROCEDURE USER MANUAL 3.3.4 Trunk cable extension and cable end covering Guidelines for trunk cable extension and cable end covering Insert CAP-WTCASMA2 on exposed cable end since original are showed below. It’s not allowed to extend the trunk cable water tight cap ensure IP67 protection of exposed trunk above maximum number of T junctions specified in Table 1. -
Page 18: Commissioning
USER MANUAL COMMISSIONING 4 Commissioning 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). 4.1 Preliminary checks • Check the data on micro inverter and verify compliance •... -
Page 19: Troubleshooting
TROUBLESHOOTING USER MANUAL 5 Troubleshooting The operating state of the micro inverters can be can be at any time retrieved from it with web application. monitored on the Gateway LCD. LCD shows the status of The inverter will not feed the grid while the alarm on LCD is the plant on default view. - Page 20 USER MANUAL TROUBLESHOOTING ERR_UNDER_ DC high voltage is too low. During operation on high output power, deep shadowing occurred. VOLTAGE It is possible that DC voltage drops too low and it is not possible to push the current into the grid.
- Page 21 TROUBLESHOOTING USER MANUAL ERR_GRID_FREQUENCY Grid frequency out of range. Grid frequency is out of range prescribed in standard for given country. Proposed action: • Verify grid frequency, if condition insist or this error is noticed on all inverters in installa- tion, •...
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Page 22: Storage
8 Maintenance Micro inverter should be inspected and cleaned if necessary Although original cable system used on Letrika micro at least once a year. It is recommended to regularly check inverters is state of the art with extra-long live, resistant for signs of damage. -
Page 23: Registration And Warranty
USER MANUAL 9 Registration and warranty All warranty conditions are available on the website http://letrikasol.com/en/#/warranties 10 Contact Letrika Sol d.o.o. Polje 15 5290 Sempeter pri Gorici Slovenia E: info@letrikasol.com www.letrikasol.com... -
Page 24: Appendix
Nominal real AC power 260 W Nominal reactive AC power (at power factor 0.9) 125 VAr Max reactive power 0 – 260 VAR (cap., ind.) Nominal output current 1.15 A 50 Hz (47.5 Hz-55 Hz) Frequency range According to standards 180 V –... -
Page 25: Certificate
Amphenol LTW H4 Standby consumption Integrated Interface Protection System/Anti- as for VDE 4105 islanding protection Certificates Solar Micro Inverter 260 was tested in accreditation laboratory according to international standards. All certificated can be downloaded from http://letrikasol.com/en/#/certificates Identification and oredring code Ordering code: AEI-1101-S-C70-P260-F50-U230- VDE-ALTW-G P/N: 11.261.001 AEI1105... -
Page 26: Dimensions
USER MANUAL APPENDIX Dimensions Compatible DC connector systems PV connectors (Amphenol H4) are compatible with all MC4 standard connectors. -
Page 27: Compatible Ac Connector System
APPENDIX USER MANUAL Compatible AC connector system Amphenol ALTW connection system is composed from one Two types of cables are available UL and VDE approved, single AC cable from micro inverter and trunk cable where while connectors are always the same. Cables and plastic up to 20 inverters can be connected. -
Page 28: Accessories
USER MANUAL APPENDIX Figure 13 ALTW trunk cable drawing Accessories For easier waterproof cable elongation end ending, some additional accessories are available: Waterproof cap Waterproof cap is used as watertight cover on unconnected CAP-WSMMFLA-P1 T junctions on trunk cable. White plastic cap originally attached on T junctions IS NOT watertight;... -
Page 29: Cable End Cap
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 AC TRUNK CABLE UNLOCKING TOOL To disconnect Letrika Micro inverter or Junction cap from trunk cable.
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