16
16
NV10P - Manual - 01 - 2015
TECHNICAL DATA
3.6
GENERAL SETTINGS FOR INDUCTIVE VTs VERSIONS
Relay nominal frequency (
f
n
)
50, 60 Hz
Relay nominal voltage (
U
n
)
50...130 V
[1]
(step 1 V)
200...520
V
[2]
(step 1 V)
Relay residual nominal voltage (
U
En
)
50...130 V (step 1 V)
Calculated relay residual nominal voltage (
U
ECn
)
U
ECn
= √3
U
n
Line VT primary nominal voltage (
U
np
)
50
V...500
kV
50...499 V (step 1 V)
500...4990 V (step 10 V)
5000...49900 V (step 100 V)
50000...500000 V (step 1000 V)
Residual primary nominal voltage (phase-to-phase) ∙√3 (
U
Enp
) 50
V...500
kV
50...499 V (step 1 V)
500...4990 V (step 10 V)
5000...49900 V (step 100 V)
50000...500000 V (step 1000 V)
3.6.1 GENERAL SETTINGS FOR SENSOR VERSIONS
Relay nominal frequency (
f
n
)
50, 60 Hz
Relay nominal voltage (
U
n
)
50...130 V
[2]
(step 1 V)
Relay residual nominal voltage (
E
n
)
E
n
=
U
n
/√3
Calculated relay residual nominal voltage (
U
ECn
)
U
ECn
= √3
U
n
= 3
E
n
Line VT primary nominal voltage (
U
np
)
50
V...500
kV
50...499 V (step 1 V)
500...4990 V (step 10 V)
5000...49900 V (step 100 V)
50000...500000 V (step 1000 V)
3.7
PROTECTIVE FUNCTIONS
Thermal protection with Pt100 probes - 26
[3]
ThAL1...8 Alarm:
Alarm threshold 26 PT1...PT8 (
Th
AL1...8
)
0...200
°C
Operating time ThAL1...8 (t
Th
AL1...8
)
0....100
s
Th>1...8 Trip:
Trip threshold 26 PT1...PT8 (
Th>
1...8
)
0...200
°C
Operating time ThAL1...8 (t
Th>
1...8
)
0....100
s
Undervoltage - 27 for inductive VTs versions
Common confi guration:
27 Operating logic (
Logic
27)
AND/OR
U< Element
U
< Curve type (
U
<
Curve
)
DEFINITE/INVERSE
[4]
Defi nite time
27 First threshold defi nite time (
U<
def
)
0.05...1.10
U
n
(step 0.01
U
n
)
U<
def
Operating time (
t
U
<
def
)
0.07...100.0
s
0.07...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Inverse time
27 First threshold inverse time (
U<
inv
)
0.05...1.10
U
n
(step 0.01
U
n
)
U<
inv
Operating time (
t
U
<
inv
)
0.10...100.0
s
0.10...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Element U<<
Defi nite time
27 Second threshold defi nite time (
U<<
def
)
0.05...1.10
U
n
(step 0.01
U
n
)
U<<
def
Operating time (
t
U
<<
def
)
0.07...100.0 s
0.07...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Note 1 The setting ranges of the relay nominal voltage U
n
are dependent on the version (to be selected on purchase), with reference voltages U
R
100 V
or 400 V.
Note 2 When the rated voltage of the electricity network divided by √ 3 corresponds to the value of rated primary voltage of the sensors (20000 / √ 3),
then the nominal voltage of the relay must be adjusted to Un = 100 V (default setting).
Note 3 The 26 element is available when the MPT module is connect on Thybus and enabled
Note 4 The mathematical formula for INVERSE curve is: t= (0.75 ∙
t
U
<
inv
) / [1 - (
U
/
U
<
inv
)]
t = operating time (in seconds)
t
U
<
inv
= operating time setting (in seconds)
U = input voltage
U<
inv
= threshold setting
