Talley1013
Member
- Location
- Houston, TX
Hey guys,
We are looking at installing temporary power to a pump station with 2-2000KW 480V generators, each one feeding a back fed delta wye 4160/480V transformer. Each transformer will then feed one half of the plant's switchgear (tie breaker open between the 2 halves).
My questions has to do with the transformers. Since they are being backfed, we will have a wye delta step up transformer. I have read on this forum and several other places to not connect the X0 to the the primary neutral or to ground. I brought this up today and unfortunately didn't know enough about it to effectively make the point. Can you guys explain, very simply, why this transformer should be hooked up this way? I read a few threads but for some reason the theory behind it just didn't click. I guess I need it dumbed down a little. Just so everyone knows, I have already received confirmation from the supplier that the transformers are rated for step up operation.
Thanks in advance for the help.
We are looking at installing temporary power to a pump station with 2-2000KW 480V generators, each one feeding a back fed delta wye 4160/480V transformer. Each transformer will then feed one half of the plant's switchgear (tie breaker open between the 2 halves).
My questions has to do with the transformers. Since they are being backfed, we will have a wye delta step up transformer. I have read on this forum and several other places to not connect the X0 to the the primary neutral or to ground. I brought this up today and unfortunately didn't know enough about it to effectively make the point. Can you guys explain, very simply, why this transformer should be hooked up this way? I read a few threads but for some reason the theory behind it just didn't click. I guess I need it dumbed down a little. Just so everyone knows, I have already received confirmation from the supplier that the transformers are rated for step up operation.
Thanks in advance for the help.