Thytronic Pro-N NVA100X-D

TECHNICAL DATA
37
NVA100X-D - Manual - 02 - 2016
Underfrequency - 81U
f< Element
Defi nite time
81U First threshold defi nite time (f<
def
) 0.800...1.000 f
n
(step 0.001 f
n
)
f<
def
Operating time (t
f
<
def
) 0.05...100.0 s
0.05...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
f<< Element
Defi nite time
81U Second threshold defi nite time (f<<
def
) 0.800...1.000 f
n
(step 0.001 f
n
)
f<<
def
Operating time (t
f
<<
def
) 0.05...100.0 s
0.05...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
f<<< Element
Defi nite time
81U Third threshold defi nite time (f<<<
def
) 0.800...1.000 f
n
(step 0.001 f
n
)
f<<<
def
Operating time (t
f
<<<
def
) 0.05...100.0 s
0.05...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
f<<<< Element
Defi nite time
81U Fourth threshold defi nite time (f<<<<
def
) 0.800...1.000 f
n
(step 0.001 f
n
)
f<
def
Operating time (t
f
<
def
) 0.05...100.0 s
0.05...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Pickup time ≤ 0.04 s
Dropout ratio ≤ 1.002
Dropout time ≤ 0.05 s
Overshoot time 0.04 s
Reference values rest: setting value + 0.2 Hz
trip: setting value - 0.2 Hz
Pickup accuracy ±5 mHz with 0.02 U
n
, ± 2 mHz with 1U
n
Operate time accuracy 5% or ± 10 ms
Differential - 87G-87M-87T
Harmonic restraint (87T)
87T Second harmonic restraint threshold (
2nd-REST> ) 10...80% I
d
(step 1% I
d
)
87T Fifth harmonic restraint threshold (
5th-REST> ) 10...80% I
d
(step 1% I
d
)
87T Harmonic restraint intentional reset time delay (t
H-RES
) 0.00...10.00 s (step 0.01 s)
87T Cross phase harmonic restraint enable (C
ROSS H-RES
) ON/OFF
CT saturation detector (87M-87G-87T)
Saturation detector enable (S
at-Det
) ON/OFF
Saturation detector intentional reset time delay (t
Sat-Det-RES
) 0.00...0.50 s (step 0.01 s)
I
d
> Element (87M-87G-87T)
First threshold (
I
d
>) 0.05...2.00 I
nref
(step 0.01 I
nref
)
First stretch slope percentage (
K1 ) 10...50% (step 1 %)
Second branch slope percentage (
K2 ) 25...100% (step 1 %)
Second branch intersection with vertical axis (
Q ) 0.00...3.00 I
nref
(step 0.01 I
nref
)
First threshold operating time
I
d
> (t
d
>) 0.04 s
I
d
>> Element (87M-87G-87T)
Second threshold (
I
d
>>) 0.50...30.00 I
nref
(step 1.00 I
nref
)
Second threshold operating time
I
d
>> (t
d
>>) 0.03 s
Breaker failure - BF
BF Phase current threshold (I
BF
>) 0.05...1.00 I
n
(step 0.01 I
n
)
BF Residual current threshold (I
EBF
>) 0.01...2.00 I
n
(step 0.01 I
En
)
BF Time delay(t
BF)
0.06...10.00 s (step 0.01 s)
Dropout ratio 0.95...0.98
Dropout time ≤ 0.05 s
Pickup accuracy (I
BF
>) ± 0.5% with 0.1 I
nL
± 0.2% with 1 I
nL
Pickup accuracy (I
EBF
>) ± 0.3% with 0.01 I
En
± 0.03% with 1 I
En
Operate time accuracy 5% or ± 10 ms
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