28
NVA100X-D - Manual - 02 - 2016
TECHNICAL DATA
Residual overcurrent - 50N.2/51N .2 or High impedance restricted earth fault - 87NHIZ.2 - side 2
IE2> Element
I
E2
> Curve type (
I
E2
>
Curve
)
DEFINITE, IEC/BS A, B, C,
ANSI/IEEE MI, VI, EI, LIT, EM
CLP operating mode (
I
E2CLP
>
Mode)
OFF/ON-Element blocking/ON-Change setting
CLP activation time (
t
E2CLP>
)
0.00...100.0
s
0.00...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
I
E2
> Reset time delay (
t
E2
>
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
50N.2/51N.2 First threshold defi nite time (
I
E2
>
def
) 0.002...10.00
I
En2
0.002...0.999
I
En2
(step 0.001
I
En2
)
1.00...10.00
I
En2
(step 0.01
I
En2
)
I
E2
>
def
within CLP (
I
E2CLP>def
)
0.002...10.00
I
En2
0.002...0.999
I
En2
(step 0.001
I
En2
)
1.00...10.00
I
En2
(step 0.01
I
En2
)
I
E2
>
def
Operating time (
t
E2
>
def
)
0.04...200
s
0.04...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...200 s (step 1 s)
Inverse time
[1]
50N.2/51N.2 First threshold inverse time (
I
E2
>
inv
) 0.002...2.00
I
En2
0.002...0.999
I
En2
(step 0.001
I
En2
)
1.00...2.00
I
En2
(step 0.01
I
En2
)
I
E2
>
inv
within CLP (
I
E2CLP>inv
)
0.002...2.00
I
En2
0.002...0.999
I
En2
(step 0.001
I
En2
)
1.00...2.00
I
En2
(step 0.01
I
En2
)
I
E2
>
inv
Operating time (
t
E2
>
inv
)
0.02...60.0 s
0.02...9.99 s (step 0.01 s)
10.0...60.0 s (step 0.1 s)
IE2>> Element
CLP operating mode (
I
E2CLP
>>
Mode)
OFF/ON-Element blocking/ON-Change setting
CLP activation time (
t
E2CLP>>
)
0.00...100.0
s
0.00...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
I
E2
>> Reset time delay (
t
E2
>>
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
50N.2/51N.2 Second threshold defi nite time (
I
E2
>>
def
0.002...10.00
I
En2
0.002...0.999
I
En2
(step 0.001
I
En2
)
1.00...10.00
I
En2
(step 0.01
I
En2
)
I
E2
>>
def
within CLP (
I
E2CLP>>def
) 0.002...10.00
I
En2
0.002...0.999
I
En2
(step 0.001
I
En2
)
1.00...10.00
I
En2
(step 0.01
I
En2
)
I
E2
>>
def
Operating time (
t
E2
>>
def
)
0.03...10.00 s (step 0.01 s)
IE2>>> Element
CLP operating mode (
I
E2CLP
>>>
Mode)
OFF/ON-Element blocking/ON-Change setting
CLP activation time (
t
E2CLP>>>
)
0.00...100.0 s
0.00...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
I
E2
>>> Reset time delay (
t
E2
>>>
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
50N.2/51N.2 Third threshold defi nite time (
I
E2
>>>
def
)
0.002...10.00
I
En2
0.002...0.999
I
En2
(step 0.001
I
En2
)
1.00...10.00
I
En2
(step 0.01
I
En2
)
Note 1
Standard Inverse Time (IEC 255-3/BS142 type A or SIT):
t = 0.14 · t
E2
>
inv
/ [(I
E2
/I
E2
>
inv
)
0.02
- 1]
Very Inverse Time (IEC 255-3/BS142 type B or VIT):
t = 13.5 ·
t
E2
>
inv
/ [(I
E2
/I
E2
>
inv
) - 1]
Extremely Inverse Time (IEC 255-3/BS142 type C or EIT):
t = 80 ·
t
E2
>
inv
/ [(I
E2
/I
E2
>
inv
)
2
- 1]
Very Inverse Time (IEC 255-3/BS142 type B or LIT):
t = 120 ·
t
E2
>
inv
/ [(I
E2
/I
E2
>
inv
) - 1]
Moderately Inverse (ANSI/IEEE type MI):
t =
t
E2
>
inv
· {0.01 / [(I
E2
/I
E2
>
inv
)
0.02
- 1] + 0.023}
Very Inverse (ANSI/IEEE type VI):
t =
t
E2
>
inv
· {3.922 / [(I
E2
/I
E2
>
inv
)
2
- 1] + 0.098}
Extremely Inverse (ANSI/IEEE type EI):
t =
t
E2
>
inv
· {5.64 / [(I
E2
/I
E2
>
inv
)
2
- 1] + 0.024}
Electromechanical (EM):
t = 0.28 ·
t
E2
>
inv
/ [-0.236 · (I
E2
/I
E2
>
inv
)
-1
+ 0.339]
I
E2
:
residual current input
t
:
operate time
I
E2
>
inv
:
pickup value
t
E2
>
inv
:
operate time setting
Asymptotic reference value:
1.1
I
E2
>inv
Minimum operate time:
0.1
s
Equation is valid for 1.1 ≤ I
E2
/ I
E2
>
inv
≤ 20
,
with I
E2
>
inv
pickup ≥
0.5
I
En2
, the upper limit is
10
I
En2
—
