Thytronic DMC3S - Page 23

23
DMC3S - Manual - 08 - 2021
Operating time (t
ED
>
inv
) 0.02...60.0 s
0.02...9.99 s (step 0.01 s)
10.0...60.0 s (step 0.1 s)
Threshold I
ED
>>a
Type of characteristic (I
ED
>>
a
Curve) DEFINITE,
IEC/BS A, B, C, B-LI
Reset delay (t
ED
>>
aRES
) 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
ED
>>
adef
- U
ED
>>
adef
)
Residual current operating time 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
)
Residual current trip value 0.001...1.000 U
En
(step 0.001 U
En
)
Characteristic angle 0...359° (step 1°)
Operating half-sector 1...180° (step 1°)
Operating time (t
ED
>>
adef
) 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)
Back-up time (t
rED
>>
adef
) 0.05...0.50 s (step 0.01 s)
Shrink time trip (t
cIED
>>
adef
) 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 operating time (t
atcIED
>>
adef
) 1...60 s (step 1 s)
Inverse time
[1]
Second inverse time threshold (I
ED
>>
ainv
- U
ED
>>
ainv
)
Residual current operating time 0.005...20.00 I
En
0.005...0.995 I
En
(step 0.005 I
En
)
1.00...20.00 I
En
(step 0.01 I
En
)
Residual current trip value 0.001...1.000 U
En
(step 0.001 U
En
)
Characteristic angle 0...359° (step 1°)
Operating half-sector 1...180° (step 1°)
Operating time (t
ED
>>
ainv
) 0.02...60.0 s
0.02...9.99 s (step 0.01 s)
10.0...60.0 s (step 0.1 s)
Threshold I
ED
>>b
Reset delay (t
ED
>>
bRES
) 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
Third definite time threshold (I
ED
>>
bdef
- U
ED
>>
bdef
)
Residual current operating time 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
)
Residual current trip value 0.001...1.000 U
En
(step 0.001 U
En
)
Characteristic angle 0...359° (step 1°)
Operating half-sector 1...180° (step 1°)
Operating time (t
ED
>>
bdef
) 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)
Back-up time (t
rED
>>
bdef
) 0.05...0.50 s (step 0.01 s)
Shrink time trip (t
cIED
>>
bdef
) 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 operating time (t
atcIED
>>
bdef
) 1...60 s (step 1 s)
Note1 Inverse time curve 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 curve IEC 255-3/BS142 (type B or VIT): t = 13.5 · t
ED
>>
inv
/ [(I
E
/I
ED
>>
inv
) - 1]
Long inverse time curve (IEC 255-3/BS B LTI): t = 120 · t
ED
>>
inv
/ [(I
E
/I
ED
>>
inv
) - 1]
Extremely inverse time curve IEC 255-3/BS142 (type C or EIT): t = 80 · t
ED
>>
inv
/ [(I
E
/I
ED
>>
inv
)
2
- 1]
t: operating time
t
ED
>>
inv
: operating time regulation
I
ED
>>
inv
: trip threshold regulation
I
E
: measured residual current
Asymptotic reference value: 1.1 I
ED
>>
inv
Minimum operating time: 0.1 s
Dynamic: 1.1 ≤ I
E
/I
ED
>>
inv
≤ 20
With regulation I
ED
>>
inv
greater than 0.5 I
E
n
, the upper limit of the measurement range is 10 I
E
n