TECHNICAL DATA
29
NVA100X-D - Manual - 02 - 2016
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)
Pickup time
≤
0.04 s
Dropout
ratio
0.95...0.98
Dropout time
≤
0.05 s
Overshoot
time
0.04
s
Pickup
accuracy ±
1% with 0.01
I
En2
, ±
0.3% with 1
I
En2
Operate time accuracy
5% or ± 10 ms
Calculated residual overcurrent - 50N(Comp)/51N(Comp)
Common confi guration:
Current measure (
I
ECtype
51NC)
I
ECL
/
I
ECH
IEC> Element
I
EC
> Curve type (
I
EC
>
Curve
)
DEFINITE,
IEC/BS A, B, C,ANSI/IEEE MI, VI, EI, LIT, EM
CLP operating mode (
I
ECCLP
>
Mode)
OFF/ON-Element blocking/ON-Change setting
CLP activation time (
t
ECCLP>
)
0.00...100.0
s
0.00...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
I
EC
> Reset time delay (
t
EC
>
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
First threshold defi nite time (
I
EC
>
def
)
0.100...40.0
I
n
0.100...0.999
I
n
(step 0.001
I
n
)
1.00...9.99
I
n
(step 0.01
I
n
)
10.0...40.0
I
n
(step 0.1
I
n
)
I
EC
>
def
within CLP (
I
ECCLP>def
)
0.100...40.0
I
n
0.100...0.999
I
n
(step 0.001
I
n
)
1.00...9.99
I
n
(step 0.01
I
n
)
10.0...40.0
I
n
(step 0.1
I
n
)
I
EC
>
def
Operating time (
t
EC
>
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]
First threshold inverse time (
I
EC
>
inv
)
0.100...20.00
I
n
0.100...0.999
I
E
(step 0.001
I
n
)
1.00...20.00
I
n
(step 0.01
I
n
)
I
EC
>
inv
within CLP (
I
ECCLP>inv
)
0.100...20.00
I
n
0.100...0.999
I
E
(step 0.001
I
n
)
1.00...20.00
I
n
(step 0.01
I
n
)
I
EC
>
inv
Operating time (
t
EC
>
inv
)
0.02...60.0 s
0.02...9.99 s (step 0.01 s)
10.0...60.0 s (step 0.1 s)
IEC>> Element
CLP operating mode (
I
ECCLP
>>
Mode)
OFF/ON-Element blocking/ON-Change setting
CLP activation time (
t
ECCLP>>
)
0.00...100.0
s
0.00...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
I
EC
>> Reset time delay (
t
EC
>>
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
Second threshold defi nite time (
I
EC
>>
def
0.100...40.0
I
n
0.100...0.999
I
n
(step 0.001
I
n
)
1.00...9.99
I
n
(step 0.01
I
n
)
10.00...40.00
I
n
(step 0.1
I
n
)
Note 1
Standard Inverse Time (IEC 255-3/BS142 type A or SIT):
t = 0.14 · t
EC
>
inv
/ [(I
EC
/I
EC
>
inv
)
0.02
- 1]
Very Inverse Time (IEC 255-3/BS142 type B or VIT):
t = 13.5 ·
t
EC
>
inv
/ [(I
EC
/I
EC
>
inv
) - 1]
Very Inverse Time (IEC 255-3/BS142 type B or LIT):
t = 120 ·
t
EC
>
inv
/ [(I
EC
/I
EC
>
inv
) - 1]
Extremely Inverse Time (IEC 255-3/BS142 type C or EIT):
t = 80 ·
t
EC
>
inv
/ [(I
EC
/I
EC
>
inv
)
2
- 1]
Moderately Inverse (ANSI/IEEE type MI):
t =
t
EC
>
inv
· {0.01 / [(I
EC
/I
EC
>
inv
)
0.02
- 1] + 0.023}
Very Inverse (ANSI/IEEE type VI):
t =
t
EC
>
inv
· {3.922 / [(I
EC
/I
EC
>
inv
)
2
- 1] + 0.098}
Extremely Inverse (ANSI/IEEE type EI):
t =
t
EC
>
inv
· {5.64 / [(I
EC
/I
EC
>
inv
)
2
- 1] + 0.024}
Electromechanical (EM):
t = 0.28 ·
t
EC
>
inv
/ [-0.236 · (I
EC
/I
EC
>
inv
)
-1
+ 0.339]
I
E
:
residual current input
t
:
operate time, minimum operate time:
0.1 s
I
E
>
inv
:
pickup value, asymptotic reference value:
1.1
I
EC
>
inv
t
E
>
inv
:
operate time setting
Equation is valid for 1.1 ≤ I
EC
/ I
EC
>
inv
≤ 20
,
with I
EC
>
inv
pickup ≥
2.5
I
n
, the upper limit is
50
I
n
—
