Electro-Voice 1252 - Manual (Page 33)

e Electro Industries/GaugeTech
Doc # E107706 V1.25 2-9
Q Phase Angles:
Q % Total Harmonic Distortion (%THD):
For Wye: x = VAN, VBN, VCN, IA, IB, IC
For Delta: x = IA, IB, IC, VAB, VBC, VCA
Q K Factor: x = IA, IB, IC
Q Watt hour (Wh):
Q VAR hour (VARh):
) ( cos 1 PF
− = ∠
1
127
2
2 ) (
x
h
x
RMS
RMS
THD
h
∑
= =
∑
∑
=
=
•
=
127
1
2
127
1
2
) (
) (
h
x
h
x
h
h
RMS
RMS h
KFactor
∑
=
=
n
t hr
t T
W
Wh
1 sec/
) (
3600
∑
=
=
n
t hr
t T
VAR
VARh
1 sec/
) (
3600