76
NVA100X-D - Manual - 02 - 2016
FUNCTION CHARACTERISTICS
Example 2
The
U
Enp
setting must be adjusted to:
U
Enp
= √3 ·
U
ng
= √3 · 10000 V = 17300 V
Measurement reading mode
Measures may be displayed according the following operating modes:
- With
RELATIVE
setting all measures are related to the nominal value,
- With
PRIMARY
setting all measures are related to the primary value.
Transformer menu
Transformer nominal power (
S
nt
)
Transformer nominal voltage side H (
V
ntH
)
Transformer nominal current side H (
I
ntH
)
[1]
Transformer mismatching factor side H (
m
H
)
[3]
Transformer base current side H (
I
BH
)
[3]
Transformer grounding side H (
G
ndH
)
Transformer connection side H (
C
onnH
)
Transformer vector group side H (
VectGroup
H
)
Transformer nominal voltage side L (
V
ntL
)
Transformer nominal current side L (
I
ntL
)
[3]
Transformer mismatching factor side L (
m
L
)
[3]
Transformer base current side L (
I
BL
)
[3]
Transformer grounding side L (
G
ndL
)
Transformer connection side L (
C
onnL
)
Transformer vector group side L (
VectGroup
L
)
Nota 1 Calculated by relay
•
—
Es3-UEn.ai
K
VT
=
/
V
V
11000
3
3
100
= 110 /
K
VT
=
/
V
V
11000
3
3
100
= 110 /
Grid rated voltage
U
ng
= 10 kV
Ratio of voltage transformer connected from star neutral to ground:
U
ng
= 10 kV
U
En
= 91 V
NVA100X-D
Es3-UEn.ai
K
VT
=
/
V
V
11000
3
3
100
= 110 /
K
VT
=
/
V
V
11000
3
3
100
= 110 /
Grid rated voltage
U
ng
= 10 kV
Ratio of voltage transformer connected from star neutral to ground:
U
ng
= 10 kV
U
En
= 91 V
NVA100X-D
