3 phase immersion heaters in star (no N) or delta

[davesparks]

They're babies Dave

I’m sure they are, but the OP mentioned that they were linked out and running on 32A single phase, so presumably they are only going to be this kind of size.

 

[Bobster]

I’m sure they are, but the OP mentioned that they were linked out and running on 32A single phase, so presumably they are only going to be this kind of size.

Must've skipped over that bit of info.

 

[Marvo]

OK I'm still not sure about star without a neutral.
I understand that they may not be designed to have 400 v across them ... but maybe they are ... but I can't tell without a part numbe ..I see from rs that some are and some arnt .

But I guess in the end it's in star now..it works..with no neutral so it's ok.
If you have an unbalanced load in star and there is no neutral then what happens to the unbalanced portion of the load..?.
The Brewery does require fast heat up times as this would mean they can do more brews a day..at the moment only 1 ...hence I wondered about the delta connections.
But without the part numbers to guide me I think I can't risk finding out..!

Thanks all for the good stuff.

Vito

It's not just about whether the elements are rated to run at a higher voltage, there's an implication for the product being heated. If you increase the element voltage you effectively increase the heat density of the tube which means higher temperatures at the interface with the product. The product may burn on the surface of the tube causing taste problems etc.

......Maybe I should introduce a neutral. .. to the star point ... but there is not enough cores for this at the moment. .
Or I could use earth .. it's a pme system after all......

Rather use a smiley emoticon to show when you're joking......