Protection Units; Adjustment Selectors - WEG ABW Serie Manual De Instrucciones

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4 PROTECTION UNITS

4.1 ADJUSTMENT SELECTORS

N and A type units
Selector
1
2 Trip by current overload
3 Delay time of Ir current
4 Trip by timed short-circuit current
5 Delay time of Is current
6 Trip by instantaneous shortcircuit current
7 Shortage current to ground
8 Delay time of Ig current
Selector
1
2 Delay time of Ir current
3 Trip by timed short-circuit current
4 Delay time of Is current
5 Trip by instantaneous short-circuit current
6 Shortage current to ground
7 Delay time of Ig current
34 | ABW - Air Circuit Breaker
Figure 4.1: Adjustment Selectors.
Function
Nominal current
Table 4.1: N and A type protection unit selectors.
Function
Nominal current
Table 4.2: P and S type protection unit selectors
P and S type units
Short
Iu (0.5 - 0.6 - 0.7 - 0.8 - 0.9 - 1.0) x In
(0.8 - 0.83 - 0.85 - 0.88 - 0.89 - 0.9 - 0.93 -
Ir
(0.5 - 1 - 2 - 4 - 8 - 12 - 16 - 20 - off) s
tr
Is (1.5 - 2 - 3 - 4 - 5 - 6 - 8 - 10 - off) x Ir'
I²t off: (0.05 - 0.1 - 0.2 - 0.3 - 0.4) s @ 10xIr
tsd
I²t on: (0.1 - 0.2 - 0.3 - 0.4) s @ 10xIr
Ii (2 - 3 - 4 - 6 - 8 - 10 - - 15 - off) x In
(0.2 - 0.3 - 0.4 - 0.5 - 0.6 - 0.7 - 0.8 - 1 - off)
Ig
I²t off: (0.05 - 0.1 - 0.2 - 0.3 - 0.4) s
tg
I²t on: (0.1 - 0.2 - 0.3 - 0.4) s
Short
Ir (0.4 - 0.5 - 0.6 - 0.7 - 0.8 - 0.9 - 1.0) x In
tr (0.5 - 1 - 2 - 4 - 8 - 12 - 16 - 20 - off) s @ 6xIr
Is (1.5 - 2 - 3 - 4 - 5 - 6 - 8 - 10 - off) x Ir
I²t off: (0.05 - 0.1 - 0.2 - 0.3 - 0.4) s @ 10xIr
tsd
I²t on: (0.1 - 0.2 - 0.3 - 0.4) s @ 10xIr
Ii (2 - 3 - 4 - 6 - 8 - 10 - 12 - 15 - off) x In
Ig (0.2 - 0.3 - 0.4 - 0.5 - 0.6 - 0.7 - 0.8 - 1 - off) x In
I²t off: (0.05 - 0.1 - 0.2 - 0.3 - 0.4) s
tg
I²t on: (0.1 - 0.2 - 0.3 - 0.4) s
Adjustment range
0.95 - 0.98 - 1.0) x Iu
@ 6xIr
x In'
Adjustment range