TECHNICAL DATA
16
NV10B - Manual - 04 - 2022
3.6 GENERAL SETTINGS
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)
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)
3.7 PROTECTIVE FUNCTIONS
Thermal protection with Pt100 probes - 26
[2]
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
Common configuration:
27 Operating logic (
Logic
27)
AND/OR
U< Element
U
< Curve type (
U
<
Curve
)
DEFINITE/INVERSE
[3]
Definite time
27 First threshold definite time (
U<
def
)
0.05...1.10
U
n
/
E
n
(step 0.01
U
n
/
E
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
/
E
n
(step 0.01
U
n
/
E
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<<
Definite time
27 Second threshold definite time (
U<<
def
)
0.05...1.10
U
n
/
E
n
(step 0.01
U
n
/
E
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)
Pickup time
≤
0.04 s
Dropout
ratio
1.03...1.05
Dropout time
≤
0.04 s
Overshoot time
0.03 s
Pickup
accuracy ±
1% ±
1%
U
n
/
E
n
Operate
time
accuracy
5%
or
±
10 ms
Overvoltage - 59
Common configuration:
59 Operating logic (
Logic
59)
AND/OR
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 The 26 element is available when the MPT module is connect on Thybus and enabled
Note 3 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
