question

ronski avatar image
ronski asked

UK Anti islanding with Quattro

We are looking at installing either a Quattro 48/10000 or 2 x Multiplus 48/5000 grid tied.


Ideally we would like to use a Multiplus 48/10000 but these are not yet certified G99 unfortunately.

Both myself and the electrician are currently rather confused.


Apparently the Mulitplus II has anti-islanding built in, but Quattro doesn't, but I've found this which which states that LOM detection is certified for use in the UK with the Quattro.

https://www.victronenergy.com/live/ve.bus:grid-codes-and-loss-of-mains-detection

So can we use the Quattro without any external anti-islanding in the UK?


Setup will be grid-inverter-all loads, so all loads will run through the inverter.

MultiPlus Quattro Inverter Charger
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Alexandra avatar image Alexandra ♦ commented ·

https://www.victronenergy.com/upload/documents/Certificate-ESS-G99-1-Quattro-8k,-10k,-15k.pdf

@Ronski

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Alexandra avatar image Alexandra ♦ commented ·

https://community.victronenergy.com/questions/132884/quattro-g99-setup.html

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ronski avatar image ronski Alexandra ♦ commented ·

@Alexandra Thanks, but it doesn't appear to answer the question. I know the Quattro has G99, the question is does it need an external anti-islanding relay, or is whats mentioned in the link sufficient?

Some people say it does, some say it doesn't, the Victron document I linked to in the OP suggests it doesn't.

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Alexandra avatar image Alexandra ♦ ronski commented ·

The thread linked discusses the use of the extra anti islanding relay. And one contributor says he had to use it to get his install passed with the Quattro. The reason being the need for the double relay that the Multi 2 already has.

See the reply from fixitbaz answered · Jun 09 2022 at 11:58 PM

Alot it seems also may depend on if you are feeding back and of course who is your service provider and their requirements.

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ronski avatar image ronski Alexandra ♦ commented ·

Read the three posts here

https://forums.overclockers.co.uk/threads/ronskis-solar-battery-diy-build-with-whole-house-backup.18957434/post-35788827

"Journey" has been told by his installer that its not required. Our links contradicts each others, so which is correct?

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1 Answer
wkirby avatar image
wkirby answered ·

The Quattro 8/10/15kVA is fully Type Tested for G99 Type A.
1660852406201.png

Test reports and test certificates are available on the type test register for your electrician's perusal. They should find all the required information within. They'll need a large cup of tea and some good biscuits.

Type test register here:
https://www.ena-eng.org/gen-ttr/index?Action=Home
Type "Quattro" in the search box to yield the devices page. Then there are links to the documents for each.
1660852834265.png


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