TECHNICAL DATA
21
NA30 - Manual - 04 - 2022
Inverse time
[1]
67N Second threshold inverse time (
I
ED
>>
inv
-
U
ED
>>
inv
)
Residual current pickup value
0.002...2.00
I
En
0.002...0.999
I
En
(step 0.001
I
En
)
1.00...2.00
I
En
(step 0.01
I
En
)
Residual voltage pickup value
0.004...0.500
U
En
(step 0.001
U
En
)
Characteristic
angle
0...359°
(step 1°)
Half operating sector
1...180°
(step 1°)
I
ED
>
inv
within CLP (
I
EDCLP>>inv
)
0.002...2.00
I
En
0.002...0.999
I
En
(step 0.001
I
En
)
1.00...2.00
I
En
(step 0.01
I
En
)
I
ED
>>
inv
Operating time (
t
ED
>>
inv
)
0.02...10.00 s (step 0.01 s)
I
ED
>>> Element
I
EDCLP
>>>
Activation time (
t
EDCLP>>>
)
0.00...100.0 s
0.00...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
I
ED
>>>
Reset time delay (
t
ED
>>>
RES
)
0.00...100.0 s
0.00...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Definite time
67N Third threshold definite time (
I
ED
>>>
def
-
U
ED
>>>
def
)
Residual current pickup value
0.002...10.00
I
En
0.002...0.999
I
En
(step 0.001
I
En
)
1.00...10.00
I
En
(step 0.01
I
En
)
Residual voltage pickup value
0.004...0.500
U
En
(step 0.001
U
En
)
Characteristic
angle
0...359°
(step 1°)
Half operating sector
1...180°
(step 1°)
I
ED
>>>
def
within CLP (
I
EDCLP
>>>
def
)
0.002...10.00
I
En
0.002...0.999
I
En
(step 0.001
I
En
)
1.00...10.00
I
En
(step 0.01
I
En
)
I
ED
>>>
def
Operating time (
t
ED
>>>
def
)
0.05...10.00 s (step 0.01 s)
I
ED
>>>> Element
I
EDCLP
>>>>
Activation time (
t
EDCLP>>>>
)
0.00...100.0 s
0.00...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
I
ED
>>>>
Reset time delay (
t
ED
>>>>
RES
)
0.00...100.0 s
0.00...9.99 s (step 0.01 s)
10.0...100.0 s (step 0.1 s)
Definite time
67N Fourth threshold definite time (
I
ED
>>>>
def
-
U
ED
>>>>
def
)
Residual current pickup value
0.002...10.00
I
En
0.002...0.999
I
En
(step 0.001
I
En
)
1.00...10.00
I
En
(step 0.01
I
En
)
Residual voltage pickup value
0.004...0.500
U
En
(step 0.001
U
En
)
Characteristic
angle
0...359°
(step 1°)
Half operating sector
1...180°
(step 1°)
I
ED
>>>>
def
within CLP (
I
EDCLP
>>>>
def
)
0.002...10.00
I
En
0.002...0.999
I
En
(step 0.001
I
En
)
1.00...10.00
I
En
(step 0.01
I
En
)
I
ED
>>>>
def
Operating time (
t
ED
>>>>
def
)
0.05...10.00 s (step 0.01 s)
Pickup time
≤
0.03 s
Dropout
ratio
0.95...0.98
Dropout time
≤
0.05 s
Overshoot time
0.03 s
Pickup accuracy (current thresholds)
±
1% with 0.1
I
n
, ±
0.5% with 1
I
n
Pickup accuracy (voltage thresholds)
±
0.3% with 0.1
U
n
, ±
0.1% with 1
U
n
Pickup accuracy (displacements)
±
2° with 0.1
I
n
- 0.1
U
n
±
0.5° with 1
I
n
- 1
U
n
Operate time accuracy
5% or ±
10 ms
Note 1
Standard Inverse Time (IEC 255-3/BS142 type A or SIT):
t = 0.14 · t
ED
>
inv
/ [(I
E
/I
ED
>
inv
)
0.02
- 1]
Very Inverse Time (IEC 255-3/BS142 type B or VIT):
t = 13.5 · t
ED
>
inv
/ [(I
E
/I
ED
>
inv
) - 1]
Extremely Inverse Time (IEC 255-3/BS142 type C or EIT):
t = 80 · t
ED
>
inv
/ [(I
E
/I
ED
>
inv
)
2
- 1]
Moderately Inverse (ANSI/IEEE type MI):
t = t
ED
>
inv
· {0.01 / [(I
E
/I
ED
>
inv
)
0.02
- 1] + 0.023}
Very Inverse (ANSI/IEEE type VI):
t = t
ED
>
inv
· {3.922 / [(I
E
/I
ED
>
inv
)
2
- 1] + 0.098}
Extremely Inverse (ANSI/IEEE type EI):
t = t
ED
>
inv
· {5.64 / [(I
E
/I
ED
>
inv
)
2
- 1] + 0.024}
Electromechanical (EM):
t = 0.28 · t
ED
>
inv
/ [-0.236 · (I
E
/I
ED
>
inv
)
-1
+ 0.339]
t
:
operate time
I
ED
>
inv
:
pickup value
t
ED
>
inv
:
operate time setting
Asymptotic reference value:
1.1
I
ED
>
inv
Minimum operate time:
0.1
s
Equation is valid for 1.1 ≤ I
E
/I
ED
>
inv
≤ 20
With
I
ED
>
inv
pickup ≥
0.5
I
n
, the upper limit is
10
I
En
