Preliminary
6.1.1 Dissipation factor tan δ
It is the tangent of loss angle δ
tan
δ =
P
|
Q
|
tan
δ =
P
|
Q
|
=
I
RX
I
CX
=
sin
δ
√
1
−
sin
2
δ
=
cos
φ
√
1
−
cos
2
φ
=
tan
(
arcsin
(
cos
φ
))
where:
P
Real Power [W]
Q
Reactive Power [VAR]
I
RX
current through resistance [A]
I
CX
current through capacitance [A]
90315-1.2 Instruction Manual CAPO
Page 24 of 117