ABB REF 542plus Technical Reference Manual page 40

REF 542plus REF 542plus
40
Multifunction Protection and Switchbay Control
Unit
Technical Reference Manual
50/51 Overcurrent with
free
programmable
characteristic (8
thresholds
available)
67 Overcurrent
directional high
67 Overcurrent
directional low
67 Overcurrent
directional with
free
programmable
characteristic (8
thresholds
available)
Earth Fault (1)
51N Earth fault high
51N Earth fault low
51N IDMT Earth fault IDMT
(inverse definite
minimum time)
50N/51N Earth-fault with
free
programmable
characteristic (8
thresholds
available)
67N Earth fault
directional high
67N Earth fault
directional low
67S Earth fault
directional
sensitive
Is = 0.050 – 40.000 x In
t (def) = 0.015 – 300.000 s
A = 0.005 – 200.000
P = 0.005 – 3.000
B = 0.000 – 50.000 s
Td = 0.050 – 5.000
Tr = 0.020 – 100.000 s
I>> = 0.050 ... 40.000 In
t = 40 ... 30 000 ms
Direction = backward, forward
I> = 0.05 ... 40.00 In
t = 40 ... 30 000 ms
Direction = backward, forward
Is = 0.050 – 40.000 x In
t (def) = 0.040 – 300.000 s
A = 0.005 – 200.000
P = 0.005 – 3.000
B = 0.000 – 50.000 s
Td = 0.050 – 5.000
Tr = 0.020 – 100.000 s
Direction = backward, forward
Io>> = 0.050 ... 40.000 In
t = 40 ... 30 000 ms
Io> = 0.050 ... 40.000 In
t = 40 ... 30 000 ms
Curve type = standard, very, extremely, or long time
inverse time characteristic
Ieb = 0.050 ... 40.000 In
K = 0.050 ... 1.500
Is = 0.050 – 40.000 x In
t (def) = 0.015 – 300.000 s
A = 0.005 – 200.000
P = 0.005 – 3.000
B = 0.000 – 50.000 s
Td = 0.050 – 5.000
Tr = 0.020 – 100.000 s
Direction = forward, backward
Net type = isolated (sin φ), earthed (cos φ)
Io>> = 0.050 ... 40.000
t = 40 ... 30 000 ms
Uo> = 0.02 ... 0.70 Un
direction = forward, backward
net type = isolated (sin phi), earthed (cos phi)
Io> = 0.050 ... 40.000 In
t = 40 ... 30 000 ms
Uo> = 0.02 ... 0.70 Un
direction = forward, backward
net type = isolated (sin phi), earthed (cos phi)
Io> = 0.050 ... 2.000 In
t = 100 ... 10 000 ms
Angle alpha = 0.0 ... 20.0°
Angle delta = -180.0 ... +180.0°
Uo> = 0.05 ... 0.70 Un
1MRS755859