Protection Functions - WEG ABW Serie Manual De Instrucciones

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4.4. proteCtIon FunCtIonS

4.4.1. type n units
long delay
Iu = In x ...
Current of
adjustment
Ir = Iu x ...
tr @ 1.5xIr
tr @ 6xIr
Time of
adjustment (s)
tr @ 7.2xIr
Precision: ± 15% ou < 100ms
Short delay
Current of adjustment
Precision: ± 10%
Time of adjustment
(s) @ 10xIr)
Opening min. time (ms)
I²t Off
Opening max. time (ms)
Instantaneous
Current of adjustment
Opening time: < 50ms
Shortage current to ground
Ig = In x ...
Current of
adjustment
Precision: ± 10% (Ig>0,4In); ±20% (Ig≤0.4In)
tg (I²t Off) @ 1xIn
Time of
adjustment (s)
tg (I²t On) @ 1xIn
Opening min. time (ms)
I²t Off
Opening max time (ms)
28 ABW - Air Circuit Breaker
0.5 0.6 0.7
0.80 0.83 0.85
12.5 25 50
0.5 1 2
0.34 0.69 1.38
Isd = Ir x ... 1.5
tsd (I²t Off) @ 10xIr 0.05 0.1 0.2 0.3 0.4
tsd (I²t On) @ 10xIr
20
80
Ii = In x ... 2 3
0.2 0.3
0.05 0.1
0.1
20 80
80 140
0.8 0.9 1.0
0.88 0.9 0.93 0.95
100 200 300 400
4 8 12 16
2.7 5.5 8.3 11
2 3 4 5 6
0.1 0.2 0.3 0.4
80 160 260 360
140 240 340 440
4 6 8 10
0.4 0.5 0.6 0.7
0.2 0.3 0.4
0.2 0.3 0.4
160 260 360
240 340 440
0.98 1.0
500 Off
20 Off
13.8 Off
8 10 Off
12 15 Off
0.8 1 Off