question

milesallen avatar image
milesallen asked

UK Quattro install with PV Generation meter

First post - A little guidance please on our design below:

We have 48 PV Panels each has an Enphase 215w micro inverter.

We have a genaration meter as part of our FIT

Our utility provider has installed a smart electricity meter to track half hourly usage

Would the below design work for us?


Our decision to connect the PV to the critical loads output (AC output 2) of the Quattro is to ensure the continuous supply from PV and battery in the event of a grid failure.

1) If we connected the panels to the Critical load, as mentioned in step 1 of the installation guide video at 7 minutes into it (https://www.victronenergy.com/live/ess:quick-installation-guide) - Would this work without the need for the additional ET112 meter?

2) With this setup, would we have use of the CCGX to show system energy flows and be able to control the system via the CCGX?

Thanks


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2 Answers
Riaan Barkhuizen avatar image
Riaan Barkhuizen answered ·

Hi @MilesAllen

The proposed setup can work. You just been to be careful with overcharging the battery pack with the enphase inverters. With the quattro you can enable freq. shifting which helps reduce power in the event that the system requires less power than what is available from the sun when the battery is full. (You may need to find a way to disconnect the micro-inverters when the grid goes down and the battery is 100% charged)

Regarding the meter, if all loads are connected downstream of the quattro there is no need for an additional meter. Only in the event that you have other loads connected between the grid and the quattro do you need to look at using a meter.

You need to look at installing an ac-current sensor to measure the pv supply to the system. You can then wire the sensor in on the quattro, this will ensure that it displays everything correctly.

Let me know if this would work for you.

Best Regards

Riaan

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russ avatar image
russ answered ·

I'm looking at something similar.

I plan to stagger the cut-off frequency of each inverter, so they progressively cut off as the multiplus moves frequency. (renesola /nep inverters)

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