Q Relay Single Phase

[@kevinvalentine2921]

I'm having such a hard time finding the right answer to my questions regarding an Enphase installation. Maybe you could answer? I basically would like to know if I can connect 3 single phase Q relays one on each phase of a three phase system? We have many houses here that have 3 phase feeds but it seems the enphase 3 phase system is marketed as a commercial product only.

[@enphase_anz]

Hi Kevin, Enphase supplies 1phase (Q-RELAY-1P-INT), and also 3phase IQ Relays (Q-RELAY-3P-INT) for installation in microinverter circuits for solar grid connected installations. Either of these products can be used in 1phase or multiphase applications. However, we do recommend using the 3P IQ Relays in three phase sites , as these manage the microinverters across phases, and enable compliance to AS/NZS4777.2 for multiphase site requirements.

[@IXXIBoss]

Thanks for the video. I have an older enphase system that was installed 4 years ago, before some of the newer regulations came into place. My system does not have a Q Relay installed. Given that the inverters themselves are compliant to AS 4777 standards, is there an additional requirement to install the Q Relay? My understanding is that each inverter already has the grid disconnect functionality built in as per the 4777 requirements. I'm just interested to see if my existing install is compliant. Thanks for taking the time to reply , if you do.

[@duncanmacgregor1961]

The Q-Relay is a mechanical disconnection requirement for installations using IQ microinverters for ANZ. If you have earlier versions of microinverters: S-series or M-series, then this Q-relay is not required.

[@IXXIBoss]

@@duncanmacgregor1961 Thank you for the response, much appreciated. For those considering Enphase, I would highly recommend. I've had my S270 based system running flawlessly for 4 years now. 115 panels and inverters, not one issue.

[@enphase_anz]

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