I was wondering if anyone out there has a chart for residential demand based on either house square footage or kilowatt hours. I have a kwh to kw demand chart from Progress Energy, however this chart is from 1988 and the kwh only goes to 4000. I was looking for a more updated table possibly.
And A to N , B to N , C to N would still remain 120V based on the internal connections of the transformers. THe swapped connection on the third transformer is still 120V across the x1 and x2 postion, just the polarity is opposite.
So to reiterate, with the secondary bushings as follows...
Ok now I see the phasor diagram and I understand the voltage vectors. Assuming the 0, -60, and -120 phase shifts, what would the phase to phase voltages be for A to B, B to C, and AtoC
Sorry I did not cleary state in my original post. The correct way to install was supposed to be:
X1=a, X2=n
X1=b, X2=n
X1=c, X2=n
The Journeyman put it on as x1=n, x2=c. I understand the 180 degrees and it being backwards. So the phase angles would be 0, -60, -120. Can explain in a little...
The tags were definitely correct. We were single phasing all customers. According to my foreman we were not getting the appropriate 3 phase voltage. I am in the process of getting the p-p voltage data. I will post when I get them.
Had a field connection done wrong the other day and wanted some input on the scenario. It was a wye-wye bank.
Transformer # 1: H1=A, H2=N ===> X1=a, X2=n
Transformer # 2: H1=B, H2=N ===> X1=b, X2=n
Transformer # 3: H1=C, H2=N ===> X1=n, X2=c (Incorrect On Sec. Side)
The field guy swapped...
I retrieved some recloser data yesterday for one of the feeders. The data was showing
Phase A: PF=0.95, kW=258, kvar=85, KVA=269
Phase B: PF=0.56, kW=237, kvar=-346, KVA=421
Phase C: PF=0.51, kW=213, kvar=-356, KVA=416
The power factor on b and c phases were of some concern, and was...
I am interning a a power company and a lineman turned in a sheet the other day on a transformer he was called out on. They replaced it with a 50 KVA and the readings were as follows: X1=182 Amps (Phase to Ground), X3=189 Amps (Phase To Ground). This transformer is a 120/240 single phase...