KBR multimess D9-PQ
20144 EDEBD
A0228-5023-1_EN
90
Positive sequence:
(
)
1
3
2
1
2
1
1
_
1
3
1
−
−
−
⋅
+
⋅
+
⋅
=
N
N
N
PS
U
a
U
a
U
U
(
)
1
3
2
1
2
1
1
_
1
3
1
−
−
−
⋅
+
⋅
+
⋅
=
I
a
I
a
I
I
PS
Negative sequence:
(
)
1
3
1
2
2
1
1
_
1
3
1
−
−
−
⋅
+
⋅
+
⋅
=
N
N
N
NS
U
a
U
a
U
U
(
)
1
3
1
2
2
1
1
_
1
3
1
−
−
−
⋅
+
⋅
+
⋅
=
N
N
N
NS
I
a
I
a
I
I
Zero sequence:
(
)
1
3
1
2
1
1
3
1
−
−
−
+
+
⋅
=
N
N
N
ZS
U
U
U
U
(
)
1
3
1
2
1
1
3
1
−
−
−
+
+
⋅
=
N
N
N
ZS
I
I
I
I
U
U
Unbalance
The unbalanced voltages are calculated from the corresponding values of the modal
positive sequence, negative sequence and zero sequence components.
For the EN50160 (events) only the voltage unbalance uu is relevant and corresponds to
the ratio of the negative sequence to the positive sequence. The value is expressed in
[%]..
Measurement data – measurement methods