Voltage Supply Standards
Voltage Supply Standards
(OP)
Good day,
Is there a standard that indicates recomended utility voltage supply variance, both phase-to-phase and phase average vs. nominal? I understand the +/- 10% is common for "vs. nominal", and I've seen both +/- 3% and +/- 5% for phase-phase differernce. Curious if this was a publication citing (e.g. NFPA, IEEE, etc.)
Thank you.
Is there a standard that indicates recomended utility voltage supply variance, both phase-to-phase and phase average vs. nominal? I understand the +/- 10% is common for "vs. nominal", and I've seen both +/- 3% and +/- 5% for phase-phase differernce. Curious if this was a publication citing (e.g. NFPA, IEEE, etc.)
Thank you.






RE: Voltage Supply Standards
RE: Voltage Supply Standards
RE: Voltage Supply Standards
Each state is different. i have seen values as high as
+/- 10% but most seem to be +/- 6%. i believe the larger utilities will try to be in the range of +/- 5%.