3ph Heating Element

Marvo · Apr 9, 2013

darkwood said:
Star 400v - Delta -230v

I didn't read the whole thread yet but I think I'm at least as confused as the OP.

Darkwood · Apr 9, 2013

As google hasn't updated to 17th the RYB is old phase coding Red, Yellow, Blue.

telectrix · Apr 9, 2013

darkwood said:
This can get confusing quickly for newbies.... if it a duel voltage set-up then its the reverse of your post... Star 400v - Delta -230v that's why I asked for his draft on an answer to see what he's been taught, although i assume with his suggestion of 3ph we could rule out 230v.

what i meant was that assuming a 400V 3∅ supply, if each element required 230V then star. if each element required 400V (rare, i know) then delta.

Darkwood · Apr 9, 2013

Marvo said:
I didn't read the whole thread yet but I think I'm at least as confused as the OP.

Ill edit it out probably not what he's been taught but i have used such element kits designed for European and American markets they connect delta we connect star. Like a duel voltage motor set-up.

Marvo · Apr 9, 2013

Ahh, I'm with you now, it's not a very common set up

telectrix said:
what i meant was that assuming a 400V 3∅ supply, if each element required 230V then star. if each element required 400V (rare, i know) then delta.

This is how I understood it.

Darkwood · Apr 9, 2013

telectrix said:
what i meant was that assuming a 400V 3∅ supply, if each element required 230V then star. if each element required 400V (rare, i know) then delta.

Soz tel realise i just over complicated it ...wasn't a dig or correcting just was unsure what basis he was taught but think they will obviously gone the most basic route.

Telf · Apr 9, 2013

and it 'clicks' !!!!

Many thanks guys

Darkwood · Apr 9, 2013

Telf said:
and it 'clicks' !!!!

Many thanks guys

Just remember as Tel pointed out you need to know your voltage rating of the elements to know whether you wire as Star or Delta.... The most likely config you'll get is 230v Elements and you will wire in star although i suspect your coursework test isn't after this but your design of the circuit, isolation points, flexi conduit to heater etc but your the one having the lessons so review your notes.