TECHNICAL DATA
31
NVA100X-D - Manual - 02 - 2016
Inverse time
59 First threshold inverse time (
U
>
inv
) 0.50...1.50 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)
U>> Element
Defi nite time
59 Second threshold defi nite time (
U
>>
def
) 0.50...1.50 U
n
/E
n
(step 0.01 U
n
/E
n
)
U>>
def
Operating time (t
U
>>
def
) 0.03...100.0 s
0.03...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Pickup time ≤ 0.04 s
Dropout ratio 0.95...0.98
Dropout time ≤ 0.05 s
Overshoot time 0.04 s
Pickup accuracy ± 0.5% with 0.1U
n
/E
n
± 0.2% with 1U
n
/E
n
Operate time accuracy 5% or ± 10 ms
Residual overvoltage - 59N
Common confi guration
Residual voltage measurement type for 59N - direct/calculated (
3
Vo
Type59N
) U
E
/U
EC
59N operation from 74VT internal (
74
VTint59N) OFF/Block
59N operation from 74VT external (
74
VText59N) OFF/Block
U
E
> Element
U> Curve type (U>
Curve
) DEFINITE/INVERSE
[1]
U
E
> Reset time delay (t
UE>RES
)
0.00...100.0 s
0.00...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Defi nite time
59N First threshold defi nite time (
U
E
>
def
) 0.01...0.70 U
En
(step 0.01 U
En
)
U
E
>
def
Operating time (t
UE
>
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
59N First threshold inverse time (
U
E
>
inv
) 0.01...0.50 U
En
(step 0.01 U
En
)
U
E
>
inv
Operating time (t
UE
>
inv
) 0.10...100.0 s
0.10...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
U
E
>> Element
U
E
>> Reset time delay (t
UE>>RES
)
0.00...100.0 s
0.00...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Defi nite time
59N Second threshold defi nite time (
U
E
>>
def
) 0.01...0.70 U
En
(step 0.01 U
En
)
U
E
>>
def
Operating time (t
UE
>>
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 0.95...0.98
Dropout time ≤ 0.05 s
Overshoot time 0.04 s
Pickup accuracy with measured residual voltage (U
E
) ± 0.2%
Pickup accuracy with calculated residual voltage(U
EC
) ± 1% with 0.01U
ECn
± 0.5% with 0.1U
ECn
Operate time accuracy 5% or ± 10 ms
Negative sequence overvoltage - 59V2
U
2
> Element
Defi nite time
59V2 First threshold defi nite time (U
2
>
def
) 0.01...0.50 E
n
(step 0.01 E
n
)
U
2
>
def
Operating time (t
U2
>
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 0.95...0.98
Dropout time ≤ 0.05 s
Note 1 The mathematical formula for INVERSE curve is t= (0.5 ∙ t
UE
>
inv
) / [(U
E
/U
E
>
inv
) - 1]
t: operating time (in seconds)
t
UE
>
inv
: operating time setting (referred to U
E
/U
E
>
inv
= 1.5)
U
E
: residual input voltage (direct or calculated)
U
E
>
inv
: threshold setting
Asymptotic reference value: 1.1 U
E
>
inv
Minimum operate time: 0.1 s
Equation is valid for 1.1 ≤ U
E
/U
E
>
inv
≤ 4
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