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4.4.3. p and S type units
long delay
Ir = In x ...
Current of
adjustment
tr @ 1.5xIr
tr @ 6xIr
Time of
tr @ 7.2xIr
adjustment (s)
Precision: ± 15% ou < 100ms
Short delay
Current of adjustment
Precision: ± 10%
Time of adjustment
(s) @ 10xIr
I²t Off
Instantaneous
Current of adjustment
Opening time: < 50ms
Shortage current to ground
Current of
adjustment
Precision: ± 10% (Ig>0.4In); ± 20% (Ig≤0.4In)
Time of adjustment
(s) @ 1xIn
tg (I²t On) @ 1xIn
Opening min. time (ms)
I²t Off
Opening max. time (ms)
leakage current to ground (optional)
Current of
Ig
adjustment (A)
Alarm (ms)
Time of
Trip (ms)
adjustment (s)
Precision: ± 15%
pre-alarm
Current of adjustment
30
ABW - Air Circuit Breaker
0.4
0.5
0.6
12.5
25
50
0.5
1
2
0.34
0.69
1.38
Isd = Ir x ...
tsd (I²t Off) @ 10xIr
tsd (I²t On) @ 10xIr
Opening min. time (ms)
Opening max. time (ms)
Ii = In x ...
2
3
Ig = In x ...
0.2
tg (I²t Off) @ 1xIn
0.05
20
80
0,5
1
2
140
230
350
140
230
350
Ip = Ir x ...
0.6
0.65
tp @ 1.2xIp
1
5
0.7
0.8
0.9
100
200
300
4
8
12
2.7
5.5
8.3
1.5
2
3
4
0.05
0.1
0.2
0.3
0.4
0.1
0.2
0.3
0.4
20
80
160 260 360
80
140 240 340 440
4
6
8
10
0.3
0.4
0.5
0.6
0.1
0.2
0.3
0.4
0.1
0.2
0.3
0.4
80
160 260 360
140 240 340 440
3
5
10
800
950
800
0.7
0.75
0.8
0.85
10
15
20
25
1.0
400
500
Off
16
20
Off
11
13.8
Off
5
6
8
10 Off
12
15
Off
0.7
0.8
1
Off
20
30
Off
0.9
0.95
1
30
35
Off