22
22
NC20 - Manual - 01 - 2015
TECHNICAL DATA
Overvoltage - 59
Common confi guration:
59 Operating logic (
Logic
59)
AND/OR
U> Element
U
> Curve type (
U
>
Curve
)
DEFINITE/INVERSE
[1]
Defi nite time
59 First threshold defi nite time (
U>
def
)
0.50...1.50
U
n
(step 0.01
U
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)
Inverse time
59 First threshold inverse time (
U>
inv
)
0.50...1.50
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)
U>> Element
Defi nite time
59 Second threshold defi nite time (
U>>
def
)
0.50...1.50
U
n
(step 0.01
U
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
≤
0.03 s
Dropout
ratio
0.95...0.98
Dropout time
≤
0.05 s
Overshoot
time
0.03
s
Pickup accuracy
±
0.3% with 0.1
U
n
, ±
0.1% with 1
U
n
Operate
time
accuracy
5%
or
±
10 ms
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
>)
0.05...1.00
I
n
(step 0.01
I
n
)
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
I
BF
>Pickup accuracy
±
0.5% with 0.1
I
n
±
0.2% with 1
I
n
I
EBF
>Pickup accuracy
± 0.5% with 0.01
I
En
± 0.2% with 1
I
En
t
BF
Operate time accuracy
5% or ±
10 ms
Note 1 The mathematical formula for INVERSE curve is: t = (0.5 ∙
t
U
>
inv
) / [(
U
/
U
>
inv
) -
1
]
t:
operating time (in seconds)
t
U
>
inv
: operating time setting (referred to
U
/
U
>
inv
= 1.5 )
U:
input voltage
U
>
inv
: threshold setting
Asymptotic reference value:
1.1
U>
inv
Minimum operate time:
0.1
s
Equation is valid for 1.1 ≤
U
/
U
>
inv
≤ 4
With
U>
pickup
≥
0.5
U
n
, the upper limit is
2
U
n
