Darfon MIG300 Installation Manual Download Page 9

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Step 5: Ground the Micro Inverters
Option 1: Integrated Grounding. Go to step 6. No additional grounding is needed. 

Option 2: GEC Grounding. Unscrew the top of grounding clips on the micro inverters. Run the grounding 

electrode conductor to each grounding clip on the micro inverter and then to the junction box. 
After laying out the grounding conductor, secure the top of the grounding clips back onto the 
micro inverters.

  

    WARNING

    Correct AC grounding and short circuit protection  
    must be provided to ensure operational safety.

Step 6:  Connect the Micro Inverters

6.1  Remove the temporary shipping cap from the t-branch on the AC trunk cable and connect the 

micro inverter. Ensure the connection is secure and locked into place.

    

    WARNING

    Do not remove the shipping/dust-protection cap until
    the MIG300 is ready to be installed to the trunk cable.

6.2  Repeat for all micro inverters in the AC branch circuit.
6.3  For any unused connectors on the AC trunk cable, replace the temporary shipping cap with a 

Sealing Cap. Listen for a click as the Sealing Cap is connected to ensure that it is securely locked 
into place.

   

Summary of Contents for MIG300

Page 1: ...INSTALLATION MANUAL MIG300 MICRO INVERTER...

Page 2: ...ING THE MICRO INVERTER 8 Installing onto a PV Racking System 8 POST INSTALLATION 11 Commissioning and Operating 11 GFDI Fault 11 Disconnecting a Micro Inverter 11 MONITORING SYSTEM 13 PLC Box Overview...

Page 3: ...nd the National Electrical Code NEC ANSI NFPA 70 Only qualified electrical personnel should perform the electrical installation and wiring of this product Be aware that even without an external voltag...

Page 4: ...otection FCC Compliance This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reason...

Page 5: ...the center of the circuit So 2 segments of 12 modules for each circuit This maximizes the communication signal strength to the PLC box The use of a RS485 specific cable is recommended such as Belden 3...

Page 6: ...ALE CATHODE FEMALE ANODE MALE CATHODE FEMALE ANODE MALE CATHODE FEMALE ANODE Voltage and Capacity Maximum Number of MIG300s per AC Branch Circuit Overcurrent Protection 240V with 10AWG AC Trunk Cable...

Page 7: ...and cease supplying output power In accordance with NEC 690 35 Installers can build ungrounded arrays where only an Equipment Grounding Conductor EGC is required to connect or bond non current carryi...

Page 8: ...relief fitting The AC interconnect cable requires a strain relief connector with an opening of 3 8 inches in diameter Step 3 Lay Out the AC Trunk Cable Place the AC trunk cable at the required locatio...

Page 9: ...s back onto the micro inverters WARNING Correct AC grounding and short circuit protection must be provided to ensure operational safety Step 6 Connect the Micro Inverters 6 1 Remove the temporary ship...

Page 10: ...sure that all cabling is located underneath the PV module Step 8 Connect the AC Junction Box Connect the AC trunk cable to the AC junction box using the appropriate gland or strain relief fitting The...

Page 11: ...s in the PV system GFDI Fault GFDI fault is defined as an unintentional electrically conducting connection between an ungrounded conductor of an electrical circuit and the normally non current carryin...

Page 12: ...ector squeeze the locking mechanism and pull the connectors apart The micro inverter s negative connector is tool removable only Positive Connector Negative Connector Step 5 If GEC grounding was insta...

Page 13: ...tem Power LED The Power LED will be a solid green when on Reset Button Press the reset button to restart the PLC Box RS485 Port Use to connect to the Data Logger RS485 LED The RS485 LED will continuou...

Page 14: ...e router Power LED Turns a solid green when power is on Reset Button To reset the data logger press and hold the button for 5 seconds The data logger will restart with the default factory settings RS4...

Page 15: ...Ethernet connection If the data logger cannot be placed near the router then the installer can add either a wireless access port or a powerline communication port not supplied by Darfon Note To mount...

Page 16: ...r serial number Installation Map with micro inverter location and serial numbers Step 2 Installer Registration If you are already registered on the Darfon Solar Portal go to step 4 In your web browser...

Page 17: ...o the Darfon Solar Portal Go to http portal darfonsolar com Enter your email and password then click the Login button Step 5 Click New Installation Select the installer and enter the data logger s ser...

Page 18: ...ay 7 2 Drag and drop each PV modules onto the array For each PV module select assign the micro inverter serial number enter the PV Module Manufacturer and Model and then click Done 7 3 Enter in a name...

Page 19: ...atch the layout of the PV system and click the Save button Note Uploading a background image is not required Step 9 Scroll down to the Account Activation section Select the Send Activation Notificatio...

Page 20: ...the electrical utility connection and at the junction box for each AC branch circuit are within the ranges Step 3 Verify that any upstream AC disconnects as well as the dedicated circuit breakers for...

Page 21: ...hts and the RS485 LED status is flashing orange but there is no communication Turn the PLC Box and Data Logger s termination resistor on Troubleshooting the Data Logger If the monitoring system is not...

Page 22: ...ominal Voltage Range 240 211 264 V Nominal Frequency Range 60 59 3 60 5 Hz Power Factor 0 95 Maximum Units per Branch Circuit Single Phase 20A Branch Circuit 16 Units 30A Branch Circuit 24 Units Effic...

Page 23: ...Input 100 240VAC 50 60Hz Power Supply Input Current 100mA 100VAC Maximum The maximum distance between the Data Logger and PLC Box is 1312ft 400m The distance from the PLC Box to the micro inverter at...

Page 24: ...M 240 VAC single phase with monitoring system with Integrated Grounding 2 POLE OF 30 AMP BREAKER METER NEUTRAL GROUND PLC BOX BLACK L1 RED L2 GREEN GROUND WHITE NEUTRAL UP TO 24 MICRO INVERTERS ON A C...

Page 25: ...M I C R O I N V E R T E R I N S TA L L AT I O N M A N U A L INSTALLATION MAP TEMPLATE Sheet ______ of ______ Please print this page H G Site _____________ Azimuth __________ Date _____________ F E D...

Page 26: ...____ __________________________________________________________________________________ __________________________________________________________________________________ _____________________________...

Page 27: ..._ __________________________________________________________________________________ __________________________________________________________________________________ ________________________________...

Page 28: ...rfon America Corp www darfonsolar com 167 Shan ying Road Gueishan 103A Pioneer Way Taoyuan 333 Taiwan R O C Mountain View CA 94041 Tel 886 3 2508800 Tel 1 650 316 6300 2014 Darfon America Corp All rig...

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