Figure 31: Dc Connection Of Microinverter - enphase IQ8D-72-E-US Design Manual

Commercial pv design guide microinverter system

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Quick install manual (6 pages)

Table Of Contents

100

101

Table of Contents

Step 08: Connect two series connected PV Modules to IQ8D Microinverter

A. IQ8D Microinverter has Enphase EN4 bulkhead for

DC connection and bulkhead adapter cable for EN4

to Staubli MC4 connection. If your PV modules have

TE PV4S SOLARLOK connectors you may plug them

directly into the IQ8D Microinverter with EN4 bulkhead.

Or use the adapter cable for PV modules with Staubli

MC4 connectors. When using adapters make sure

they are fully seated. Do not reverse the adapter

connections.

B. Connect positive and negative DC lead from each

PV module to the IQ8D Microinverter bulkhead DC

connectors directly or using the adapter cables.

Complete the series connection of the other two DC

leads as shown in Figure 31.

C. Check the LED on the connector side of the

Microinverter. The LED flashes six times when DC

DC Connectors

Adapters

(if required)

Step 09: Energize the system

A Turn ON the AC disconnect or circuit breaker for the

branch circuit.

Start-up and commission the system using the

detailed steps mentioned under IQ8D System Startup

and Commissioning.

power is applied.

D. Mount the PV modules above the Microinverters

Electrical shock hazard. The DC conductors of this photovoltaic

system are ungrounded and may be energized.

If adapters are used, ensure that they are installed in the correct

orientation.

Series connect two compatible PV modules per manufacturers'

instructions. Do not skip this step.

Enphase IQ8D Microinverter bulkhead male, female DC connectors

must only be mated with the identical type and manufacturer brand

of male/female connector. IQ8D Microinverter has Enphase EN4

bulkhead for DC connection and bulkhead adapter cable for EN4 to

Staubli MC4 connection.

Status LED