15
DMC3S - Manual - 08 - 2021
Operating time (
t
>>>
def
)
0.05...1000
s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink time trip (
t
cI
>>>
def
)
0.05...1000
s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink activation time (
t
atcI
>>>
def
)
1...60 s (step 1 s)
Threshold I>>>>
Type of characteristic (
I>>>>
Curve
)
DEFINITE,
IEC/BS A, B, B-LI, C
Reset delay (
t
>>>>
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
Second definite time threshold (
I
>>>>
def
) 0.050...25.0
I
n
0.050...0.995
I
n
(step 0.005
I
n
)
1.00...9.99
I
n
(step 0.01
I
n
)
10.0...25.0
I
n
(step 0.1
I
n
)
Operating time (
t
>>>>
def
) 0.05...1000
s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink time trip (
t
cI
>>>>
def
)
0.05...1000
s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink activation time (
t
atcI
>>>>
def
)
1...60 s (step 1 s)
Inverse time
Second inverse time threshold (
I
>>>>
inv
) 0.050...20.00
I
n
0.050...0.995
I
n
(step 0.005
I
n
)
1.00...20.00
I
n
(step 0.01
I
n
)
Operating time (
t
>>>>
inv
)
0.02...10.00 s (step 0.01 s)
—
Residual overcurrent - 50N/51N
Threshold IE>
Type of characteristic (
I
E
>
Curve
)
DEFINITE,
IEC/BS A, B, B-LI, C
Reset delay (
t
E
>
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
First definite time threshold (
I
E
>
def
)
0.005...25.0
I
En
0.005...0.995
I
En
(step 0.005
I
En
)
1.00...9.99
I
En
(step 0.01
I
En
)
10.0...25.0
I
En
(step 0.1
I
En
Operating time (
t
E
>
def
)
0.05...1000
s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink time trip (
t
cIE
>
def
) 0.05...1000
s
0.05...9.99 s (step 0.01 s)
10.0...99.9 s (step 0.1 s)
100...1000 s (step 1 s)
Shrink activation time (
t
atcIE
>
def
)
1...60 s (step 1 s)
Inverse time
[1]
First inverse time threshold (
I
E
>
inv
)
0.005...2.00
I
En
0.005...0.995
I
En
(step 0.005
I
En
)
1.00...2.00
I
En
(step 0.01
I
En
)
Operating time (
t
E
>
inv
)
0.02...60.0
s
0.02...9.99 s (step 0.01 s)
10.0...60.0 s (step 0.1 s)
Note1
Inverse time curve IEC 255-3/BS142 (type A or SIT):
t = 0.14 · t
E
>
inv
/ [(I
E
/I
E
>
inv
)
0.02
- 1]
Very inverse time curve IEC 255-3/BS142 (type B or VIT):
t = 13.5 ·
t
E
>
inv
/ [(I
E
/I
E
>
inv
) - 1]
Long inverse time curve (IEC 255-3/BS B LTI):
t = 120 · t
E
>
inv
/ [(I
E
/I
E
>
inv
) - 1]
Extremely inverse time curve IEC 255-3/BS142 (type C or EIT):
t = 80 ·
t
E
>
inv
/ [(I
E
/I
E
>
inv
)
2
- 1]
t
:
operating time
t
E
>
inv
:
operating time regulation
I
E
>
inv
:
trip threshold regulation
I
E
:
measured residual current
Asymptotic reference value:
1.1
I
E
>
inv
Minimum operating time:
0.1
s
Dynamic: 1.1 ≤ I
E
/I
E
>
inv
≤ 20 With regulation I
E
>
inv
greater than
0.5
I
E
n
, the upper limit of the measurement range is
10
I
E
n