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Troubleshooting
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Summary of Contents for MeiKai ENERGY N270
- Page 1 Meikai ENERGY Meikai N270 Micro-Inverter Installation and Operation Manual Version: 1.0 NOTICE: MKSTAR –N270: Pairs with most 60-cell PV modules MKSTAR –N220/N300: Pairs with most 72-cell PV modules Page 1 Copyright MeiKai ENERGY 2012 REV 1.0...
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Page 2: Contact Information
Meikai ENERGY Contact Information: Shenzhen Meikai Electronics Stock Co., Ltd Address: Blk B13,Hengfeng Industrial City,Hezhou,Xixiang,Bao’an,Shenzhen,China Tel：+86-0755-86079109 Fax：+86-075586079197 www.meikaienergy.com info@meikai-cn.com Thanks for choosing Meikai N270 Micro-Inverter. For your own safety and to ensure the operation of the equipment, please read this manual carefully before installation and operation. - Page 3 Meikai ENERGY All rights reserved: Meikai reserves the right to change the product and the content of this manual without WARNING. Users are recommended to visit the company website www.meikai-cn.com for more information about new products and latest versions of user manuals.
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Page 4: Table Of Contents
Step 1-Installing the AC branch circuit junction box ..............9 Step 2- Attach Meikai Micro-inverter to the racking ..............10 Step 3-Connect the Meikai micro-inverter to the AC branch cable .......... 10 Step 4-Grounding the system ....................... 12 Step 5-Connect the PV modules....................12 Step 6-Complete the Meikai Micro-inverter Installation Map ............ -
Page 5: Installation And Operation Instructions
Be aware that only qualified personnel are allowed to maintain Meikai Micro-inverters. DO NOT attempt to repair the Meikai Micro-inverter, it is unrepairable. If it fails, please return the unit to your distributor or Meikai Customer Service for maintenance. Tampering with or opening the Meikai Micro-inverter will void the warranty. -
Page 6: Meikai Micro-Inverter System
PV modules in the array. When PV modules in the array are affected by shading, soiling, orientation, or mismatch, the Meikai Micro-inverter insures top performance from all PV modules in the array. -
Page 7: System Monitoring
Meikai inverter will be easily mounted on the rack under the module, the DC wire from the module directly connect the Meikai Micro-inverter simply with quick terminals, no risk of 600V or higher voltage electricity shock. -
Page 8: Meikai Micro-Inverter Installation Guide
Each of the detailed installation steps in the following sections is numerically referenced in the installation diagram below. WARNING: DO NOT connect the Meikai Micro-inverter to the utility grid until you have completed all of the installation procedures as described in the following sections. -
Page 9: Step 1-Installing The Ac Branch Circuit Junction Box
Step 1-Installing the AC branch circuit junction box A、Check and make sure the AC voltage is within the voltage range indicated on the label. B、Mount the Meikai adapter plate at a suitable location on the PV racking system (typically at the end of a branch of modules). -
Page 10: Step 2- Attach Meikai Micro-Inverter To The Racking
C. Mount one micro-inverter at each of these locations using hardware recommended by your module racking supplier. Step 3-Connect the Meikai micro-inverter to the AC branch cable Each micro-inverter comes with a 15cm AC wire with one 3 pin female connector and a 156cm AC wire with one 3 pin male connector. - Page 11 Meikai ENERGY Here is the connection method between the branches. Connect the male connecter of the first Meikai Micro-inverter in every branch to the AC junction box. Plug the AC female connector of the first micro-inverter into the male connector of the next micro-inverter, and so forth, to form a continuous AC branch circuit.
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Page 12: Step 4-Grounding The System
NOTE: If you already use grounding washers to ground the micro-inverter to the PV module racking as described in step 1, skip this step. Each Meikai Micro-inverter comes with a ground screw with a diameter of 5mm. Check your local code for grounding conductor sizing requirement. Connect the grounding electrode conductor to the micro-inverter ground screw. -
Page 13: Step 6-Complete The Meikai Micro-Inverter Installation Map
You can use the blank map in the Appendix to record micro-inverter placement for your system. When your map is complete, send it to Meikai as described below. Meikai then uses this information to provide you with detailed information about the performance of your PV system and to allow you to see a graphic representation of your PV system on the web-based monitoring and analysis. -
Page 14: Troubleshooting
LED Indications The LED indicats red,orange and green three different colors. Starting up With proper DC input voltage, the RED light on indicates the PV module is output power and the Meikai micro-inverter is staring up. Page 14 Copyright MeiKai ENERGY 2012... -
Page 15: Sarting Grid Connect Indication
Green LED will blink quickly until the reporting completed. Failure indication N270 is designed with 9 different kind of failure protections, all will spark the RED LED and stay on until the failure is maintained. NOTE: Only for low voltage protection, the recovery time is variable, for other situation the recovery time is 2 minutes. -
Page 16: Troubleshooting Procedure
WARNING: Never disconnect the DC wire connectors under load. Make sure that no current is flowing in the DC wires prior to disconnecting. WARNING: N270 micro-inverter is powered by DC power, when you reconnect the DC wire after disconnect make sure the RED LED is on. -
Page 17: Replace A Meikai Micro-Inverter
Remove the Micro-inverter from the PV array racking. Replace a Meikai Micro-inverter Replace a Meikai micro-inverter follow the steps in the order shown Disconnect the micro-inverter from the PV module follow the foresaid steps. Install a new Meikai micro-inverter to the racking. -
Page 18: Technical Specifications
DC input current of the micro-inverter. Please make sure the output voltage and current of the PV module match with the Meikai micro-inverter. A list of compatible PV modules is maintained on the Meikai website (http://www.meikai-cn.com). -
Page 19: Technical Specifications
1300 Nominal frequency/range N270 49.5 50.5 Over high AC current protection N270 Min. time of system recovery mins. other working specifications Max. units per branch N270 Peak inverter efficiency N270 European efficiency Page 19 Copyright MeiKai ENERGY 2012 REV 1.0... - Page 20 Category II Protective Class Class I Cooling Natural Convection AC cable H05VV-F 3*2.5mm² DC cable PV1-F 1*4.0mm² communication powerline Warranty 15 years (25 years optional) AS 4777.2 AS4777.3 AS3100 Compliance EN 62109-1 Page 20 Copyright MeiKai ENERGY 2012 REV 1.0...
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Page 21: Appendix
Meikai ENERGY Appendix Page 21 Copyright MeiKai ENERGY 2012 REV 1.0... -
Page 22: Meikai Micro-Inverter Installation Map
Meikai ENERGY Meikai Micro-inverter Installation Map To Sheet Array: Customer information Installer information N/S/E/W Orientation: (circle) Tilt: Serial No.: Form / Version Installation Map To Sheet Page 22 Copyright MeiKai ENERGY 2012 REV 1.0... -
Page 23: Quick Installation Guide
Meikai ENERGY Quick installation Guide Page 23 Copyright MeiKai ENERGY 2012 REV 1.0... - Page 24 Meikai ENERGY Page 24 Copyright MeiKai ENERGY 2012 REV 1.0...
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