This supply system is common in Hastings town centre.Split phase is two phases, 180° out of phase with each other, sharing same neutral. 230V each, 460V between phases.
Not much use for anything as a supply over and above two single phases to increase capacity. Used to be able to get split phase motors iirc.
It's probably split phase, rather than two phases of a 3phase supply given its location I suspect.
Had a new 3phase smart meter fitted to a split phase supply in March this year. It's currently monitoring import/export as it should. I queried the 3phase meter and it's appropriatness to use on split phase when it and the installer arrived and said, no issue, that's what should be fitted. Yet to get SEG payments but registration in progress.The dilemma that I believe my SiL has is that she can't get a smart meter so claiming export is difficult. And because its an oddball grid connection, she can't find an export meter that her supplier is willing to use for export monitoring. That was what I gleaned a couple of months ago in their local pub after a few beers so I'll refresh that info to make sure I've got the right angle of the dangle before sourcing or building anything. That and a chat with the solar installer should get me up to speed.
I think my SiL wants some means of monitoring import/export and to help get some export payments but I need to have a longer chat with her.Interested regarding monitoring etc, how do you use the data you get? I currently write down total generation of arrays on the wall next to the meters. Rather analogue
They should have done that before fitting the inverters, without getting more details on what is installed, it may mean them buying something different.Maybe get onto the electric board and see if they can convince them to change their supply to three phase
Because, being a transformer, it cannot be anything other than 180°.I assume by split phase you mean 2 phases form a centre tapped transformer, common in europe etc. how would you know its vector relationship from that?
In a three phase transfomer they are 120° apart, so if you have 2 phases they will be 120 apart?(360/3) , as the source supply is not know I was confused as to where the 180 came from.Because, being a transformer, it cannot be anything other than 180°.
Look at the diagram above.In a three phase transfomer they are 120° apart, so if you have 2 phases they will be 120 apart?(360/3) , as the source supply is not know I was confused as to where the 180 came from.
It's all relevant to each other.In a three phase transfomer they are 120° apart, so if you have 2 phases they will be 120 apart?(360/3) , as the source supply is not know I was confused as to where the 180 came from.
Because it allows more power consumption on site than standard single phase with less investment required than full 3 phase. Clearly used to be deemed a worthwhile trade off, even if it no longer is!If unknown it could be anything.
Why would you want two single "out of phase" supplies at the same property it seems very dangerous.
I guess its a very old system, the installs I have done over the years have always been new equipement.
The way it was explained to me, it's for safety, most times, you'll get 120 vac shock to ground.If unknown it could be anything.
Why would you want two single "out of phase" supplies at the same property it seems very dangerous.
I guess its a very old system, the installs I have done over the years have always been new equipement.
Cost.If unknown it could be anything.
Why would you want two single "out of phase" supplies at the same property it seems very dangerous.
I guess its a very old system, the installs I have done over the years have always been new equipement.
Our supply is 230v not 120v like yours.The way it was explained to me, it's for safety, most times, you'll get 120 vac shock to ground.
To get a 240 vac shock would require to get across both hots (and they must be out of phase), much less chance of that.
The vectors only affect the amplitude, you could run the centre tapped of a single phase, but I guess as it is a remote site the supply will be TT, so the neutral would be the earth, so phase to neutral on a pole TX would not be so straight forward.Cost.
You don't need to pull a third 11kv line in.
2 separate phases 120° apart are of limited use unless you want two single phase supplies. No good for an induction motor if you consider the sinewave 0 120 240 rather you would have 0 120 if that makes sense?
Where as 2 phases at 180° apart gives 460v or essentially single phase lots of poke less cable or two single phase supplies using the centre tap to get your 230v. Induction motors still require a start capacitor.
Old hat now but at the time materials were scares and valuable.
The vectors only affect the amplitude, you could run the centre tapped of a single phase, but I guess as it is a remote site the supply will be TT, so the neutral would be the earth, so phase to neutral on a pole TX would not be so straight forward.