IEEE Std 80-2000 Equation Error
IEEE Std 80-2000 Equation Error
(OP)
Equation 68, zero sequence current for line-to-line-to-ground fault, of IEEE Std 80-2000 contains the following error:
Numerator currently reads "X1 x (X0 + X2) + (X2 + X0)"
Numerator should read "X1 x (X0 + X2) + (X2 x X0)"
Numerator currently reads "X1 x (X0 + X2) + (X2 + X0)"
Numerator should read "X1 x (X0 + X2) + (X2 x X0)"






RE: IEEE Std 80-2000 Equation Error
As a further suggestion, consider correct the word numerator by denominator.
OBSERVATION:
For x1=X2 the equation 68 and 69 are simplified as follow:
For DLG fault,Io=E/(X1+2Xo). For SLG fault,Io=E/(2X1+Xo).
Therefore if X1=Xo, Io for SLG = DLG.
if Xo>X1, Io for SLG > DLG.
RE: IEEE Std 80-2000 Equation Error
RE: IEEE Std 80-2000 Equation Error
Equation #32 & 33 pp 27: reads "E step" should be "E touch"
.Similarly Eq. (B7)on page 132 should be corrected as above.