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Troubleshooting
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Summary of Contents for MeiKai ENERGY N220
- Page 1 Meikai ENERGY Meikai N220/N300 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
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 N220/N300 Micro-Inverter. For your own safety and to ensure the operation of the equipment, please read this manual carefully before installation and operation. Page 2 Copyright MeiKai ENERGY 2012 REV 1.0... - Page 3 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. Page 3 Copyright MeiKai ENERGY 2012 REV 1.0...
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Page 4: Table Of Contents
Disconnect the micro-inverter from the PV module ................16 Replace a Meikai Micro-inverter ......................17 Technical Specifications ........................18 Technical Specifications ....................... 18 Appendix ..............................21 Meikai Micro-inverter Installation Map ..................22 Quick installation Guide ........................ 23 Page 4 Copyright MeiKai ENERGY 2012 REV 1.0... -
Page 5: Installation And Operation Instructions
Connect the Meikai Micro-inverter to the local electricity utility grid only after receiving prior approval from the utility company. Meikai takes none responsibility for any on-grid system without such approval. DO NOT disconnect the PV module from the Meikai Micro-inverter without disconnecting AC power. Page 5 Copyright MeiKai ENERGY 2012 REV 1.0... -
Page 6: Meikai Micro-Inverter System
The completed self-protection functions greatly improve the stability and reliability of the solar system. The Meikai Micro-inverter adopts totally enclosed potting technology to improve its enclosure protection rate to IP65. Page 6 Copyright MeiKai ENERGY 2012 REV 1.0... -
Page 7: System Monitoring
205V to 253V and frequency of 50Hz. Depends on the two different ways of installation, 14 units are allowed in a branch if the N220 Micro-inverters are connected in series, 11 units are allowed in a branch if the N300 Micro-inverters are connected in series, if a busbar is used, the number of units is depending upon the wire diameter. -
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 8 Copyright MeiKai ENERGY 2012 REV 1.0... -
Page 9: Step 1-Installing The Ac Branch Circuit Junction Box
D、Work out the total current basis on the number of micro-inverters in each branch, use an appropriate cable and connect the AC branch circuit junction box to the point of utility interconnection. Page 9 Copyright MeiKai ENERGY 2012 REV 1.0... -
Page 10: Step 2- Attach Meikai Micro-Inverter To The Racking
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. As indicated in the following picture: Page 10 Copyright MeiKai ENERGY 2012 REV 1.0... - Page 11 NOTE: Check the micro-inverter rating label for the maximum number of micro-inverters allowed on one AC branch circuit. Install a protective end cap on the open AC connector of the last micro-inverter in the AC branch circuit. Page 11 Copyright MeiKai ENERGY 2012 REV 1.0...
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Page 12: Step 4-Grounding The System
Check your local code for grounding conductor sizing requirement. Connect the grounding electrode conductor to the micro-inverter ground screw. Step 5-Connect the PV modules NOTE: Completely install all Micro-inverters and all system inter-wiring connections prior to installing the PV modules. Page 12 Copyright MeiKai ENERGY 2012 REV 1.0... -
Page 13: Step 6-Complete The Meikai Micro-Inverter Installation Map
Meikai micro-inverter is in normal operation. Commissioning a Meikai Micro-inverter system: Connect each micro-inverter to the respective PV module (make sure the module is in normal operation), the RED LED on. Page 13 Copyright MeiKai ENERGY 2012 REV 1.0... -
Page 14: Troubleshooting
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 REV 1.0... -
Page 15: Sarting Grid Connect Indication
Over high BUS voltage Over low BUS voltage Utility grid voltage Over low Utility grid voltage Over high Utlity grid current Over high Micro-inverter temperature over high Page 15 Copyright MeiKai ENERGY 2012 REV 1.0... -
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: N220/N300micro-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
Close the AC circuit breaker to verify the operation status. WARNING ：Residual voltage exists in the inverter; the inverter cannot be maintained within 5 minutes until the capacitor is fully discharged. Page 17 Copyright MeiKai ENERGY 2012 REV 1.0... -
Page 18: Technical Specifications
IEC/EN 60947-3. The rated current should be between 20A and 25A. Besides, AC breaker is also needed between inverter and Grid. The rated current should be over AC output current, One branch AC breaker should be over 15A. Technical Specifications Page 18 Copyright MeiKai ENERGY 2012 REV 1.0... - Page 19 1100 N300 1200 1400 Nominal frequency/range N220 49.5 50.5 N300 Over high AC current protection N220 N300 Min. time of system recovery Minutes other working specifications Max. units per branch N220 N300 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) Serial No.: Tilt: 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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