oscar47
Member
- Location
- Destin, fl
Is it possible to connect 208Y as the primary and get 480 as the secoundary on a 480 Primary to
208Y secoundary transformer?
208Y secoundary transformer?
Yes but, you wouldn't connect it as wye/delta, you would connect it as delta/delta.Is it possible to connect 208Y as the primary and get 480 as the secoundary on a 480 Primary to
208Y secoundary transformer?
Yes but, you wouldn't connect it as wye/delta, you would connect it as delta/delta.
Roger
Rob, you would in fact have a wye voltage but, you would connect it delta/delta or as you put it, without the neutral. With that being said, now one of the out put phases need to be grounded or install a ground detector.You would need to have a 208 volt input which would still be WYE connected just without a neutral.
Hi Roger. I will throw this in. The 480p/208s ones I have reversed like this, I made sure that they were marked "Suitable for reverse connection" Just in case we got an inspector who was looking for something to do.Rob, you would in fact have a wye voltage but, you would connect it delta/delta or as you put it, without the neutral. With that being said, now one of the out put phases need to be grounded or install a ground detector.
Roger
Hey Curtis, you have a good point as far as some of our inspectors are concerned. BTW, the boat's ready and I'll buy the bait this time.Hi Roger. I will throw this in. The 480p/208s ones I have reversed like this, I made sure that they were marked "Suitable for reverse connection" Just in case we got an inspector who was looking for something to do.
I will buy the bait if you don't forget the tackle boxHey Curtis, you have a good point as far as some of our inspectors are concerned. BTW, the boat's ready and I'll buy the bait this time.
Roger
Is it possible to connect 208Y as the primary and get 480 as the secoundary on a 480 Primary to
208Y secoundary transformer?
Rob, you would in fact have a wye voltage but, you would connect it delta/delta or as you put it, without the neutral. With that being said, now one of the out put phases need to be grounded or install a ground detector.
Roger
If you only connect the load or supply to the three phase wires, the load/supply cannot tell the difference between wye and delta, but the current in the transformer windings will be different depending on whether that side is delta or wye internally. The current in the phase wires on that side will be the same at any given power level, but the current in the windings that results will be different.I'm not understanding how if you have a 480-208/120 volt transformer wired in reverse how you would physically make the 208 volt connection a Delta? Isn't it factory connected in a WYE configuration with one side of each winding connected to the X0?
I'm not understanding how if you have a 480-208/120 volt transformer wired in reverse how you would physically make the 208 volt connection a Delta? Isn't it factory connected in a WYE configuration with one side of each winding connected to the X0?
Rob, you are missing my point. I am not insinuating there is a change in the windings, all I am saying is, for simplicity purposes, the actual connections to the transformer will be the same as delta/delta as in X1, X2, X3 / H1, H2, H3, there is no XO or HO in the picture.I'm not understanding how if you have a 480-208/120 volt transformer wired in reverse how you would physically make the 208 volt connection a Delta? Isn't it factory connected in a WYE configuration with one side of each winding connected to the X0?