enphase IQ8 Series - Table of Contents

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IQ8AC/IQ8HC Installation and Operation Manual

USM-00005-2.0

Contents

1. Important safety information ....................................................................................................................... 5

IQ8 Series Microinverters safety instruction ................................................................................................. 5

2. The Enphase IQ System ................................................................................................................................. 9

How the Enphase IQ8 Series Microinverters work ....................................................................................... 10

System monitoring ........................................................................................................................................ 10

Optimal reliability .......................................................................................................................................... 10

Ease of design ................................................................................................................................................ 10

3. Planning for microinverter installation ....................................................................................................... 11

4. Parts and tools required ............................................................................................................................... 13

5. Enphase microinverters installation ........................................................................................................... 14

Step 1: Position the IQ Cable ........................................................................................................................... 15

Step 2: Position the junction box .................................................................................................................... 15

Step 3: Mount the microinverters ................................................................................................................... 15

Step 4: Create an installation map .................................................................................................................. 16

Step 5: Manage the cabling ............................................................................................................................. 17

Step 6: Connect the microinverters ............................................................................................................... 17

Step 7: Terminate the unused end of the IQ Cable ....................................................................................... 18

Step 8: Complete the installation of the junction box ................................................................................. 19

Step 9: Connect the PV modules .................................................................................................................... 19

Step 10: Energize the system .......................................................................................................................... 20

Set up and activate monitoring ...................................................................................................................... 20

6. Troubleshooting ............................................................................................................................................ 21

Status LED indications and error reporting .................................................................................................. 21

LED operation .................................................................................................................................................... 21

DC Resistance Low – Power Off condition ................................................................................................... 21

Other faults ....................................................................................................................................................... 22

Troubleshoot an inoperable microinverter .................................................................................................. 22

Disconnect a microinverter ............................................................................................................................ 23

Install a replacement microinverter .............................................................................................................. 24

IQ Cable planning and ordering .................................................................................................................... 25

IQ Cable accessories ....................................................................................................................................... 25

7. Technical data ................................................................................................................................................ 27

Technical considerations ................................................................................................................................. 27

Bifacial modules ................................................................................................................................................ 27

Anti-islanding .................................................................................................................................................... 27

PQ capability curve .......................................................................................................................................... 27

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enphase IQ8 Series - Table of Contents

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