ABB REF 542plus Technical Reference Manual page 41

1MRS755859
Multifunction Protection and Switchbay Control
Unit
Technical Reference Manual
67N Sector Earth fault
directional Sector
(10 thresholds
available)
67N Earth Fault
directional with
free
programmable
characteristic (8
thresholds
available)
Voltage protection functions
59 Overvoltage
instantaneous
59 Overvoltage high U>> = 0.100 ... 3.000 Un
59 Overvoltage low
27 Undervoltage
instantaneous
27 Undervoltage high U<< = 0.10 ... 1.20 Un
27 Undervoltage low U< = 0.10 ... 1.20 Un
25 Synchronism
check
59N Residual
overvoltage high
59N Residual
overvoltage low
Motor protection functions
49 Thermal overload
protection with
total memory
51MS Motor start
Direction = Enable (directional behavior)...Disable (non
directional behavior)
Start Criteria = neutral current magnitude/ neutral current
basic angle
Io> = 0.002 ... 8.000 In
Uo> = 0.004 ... 0.700 Un
t = 30 ... 60 000 ms
Sector Basic Angle = -180.0 ... +180.0°
Sector Width = 0.0 ... 360.0°
Io> drop off delay = 0 ... 1000 ms
Uo> drop off delay = 0 ... 1000 ms
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
U>>> = 0.100 ... 3.000 Un
t = 15 ... 300 000 ms
t = 40 ... 30 000 ms
U> = 0.100 ... 3.000 Un
t = 40 ... 30 000 ms
U<<< = 0.10 ... 1.20 Un
t = 15 ... 30 000 ms
t = 40 ... 30 000 ms
t = 40 ... 30 000 ms
Delta Voltage = 0.02 ... 0.40 Un
Delta Phase = 5 ... 50°
t = 0.20 ... 1000.00 s
Uo>> = 0.05 ... 3.00 Un
t = 20 ... 300 000 ms
Uo> = 0.05 ... 3.00 Un
t = 20 ... 300 000 ms
Nominal Temperature = 50 ... 400 °C (nominal
Temperature at I nom)
Nominal current (IMn) = 0.100 ... 5.000 In (primary value of
the nominal motor current)
Initial Temperature = 10 ... 400 °C
Time Constant at I < 0.1 IMn = 10 ... 100 000 s
Time Constant at 0.1 IMn < I < 2 IMn = 10 ... 20 000 s
Time Constant at I > 2 IMn = 10 ... 20 000 s
Trip Temperature = 50 ... 400 °C
Warning Temperature = 50 ... 400 °C
Environmental Temperature = 10 ... 50 °C
Reset Temperature = 10 ... 400 °C
IMn = 0.200 ... 2.000 IMn (motor current) (2)
Is = 1.000 ... 20.000 IMn (start value)
t = 40 ... 30 000 ms
I> = 0.200 ... 0.800 Is (motor start)
REF 542plus REF 542plus
41