ABB REF 542plus, Product Manual

Page: 15 / 28

Feeder Terminal REF 542plus
1MRS756269
Technical data (cont´d)
15
Frequency protection function
81 Frequency protection Start value = 40.00 -- 75.00 Hz, step 0.01 Hz
Frequency gradient = 0.01 - 1.00 Hz/s
t = 0.10 - 30.00 s
U< = 0.10 ... 1.00 U
n
Trip logic = frequency only
frequency AND freq. gradient
frequency OR freq. gradient
Frequency supervision
Frequency supervision Start value = 0.04 - 5.00 Hz
Time = 1.00 - 300.00 s
Distance protection function
21 Distance protection Net type = high/low ohmic
Earth start I
E
> = used, unused
Switching onto faults = normal, overreach zone, trip
after start
Signal comparison overreach scheme time set = 30
-
300 000 ms
U/I -start characteristic I>, I
E
> and I
F
> = 0.05 - 4.00 x I
n
U
F
< = 0.05 - 0.90 x U
n
Phase selection = cyclic or acyclic
Earth factor Factor k = 0.00 -10.00,
Angle (k) = -60° - 60°
3 Impedance,
1 overreach stage, and
1 autoreclose control stage:
R = 0.05 -120.00 Ohm (secondary values)
X = 0.05 - 120.00 Ohm (secondary values)
t = 20 - 10 000 ms
Angle delta 1 = -45.00 ... 0.00 °
Angle delta 2 = 90.00 ... 135.00 °
t = 20 - 10 000 ms
1 non directional stage
t = 20 - 10 000 ms
Power quality functions
Power factor controller Switching sequence = linear or circular
Switching histeresis,neutral zone = 105 - 200% x Q
co
Pick up value = 0 -100% x Q
co
Reactive power of smallest bank Qc
o
=
1.000 - 20 000.000 kVar
Configuration banks: 1:1:1:1, 1:1:2:2, 1:2:2:2, 1:2:4:4,
1:2:4:8
Number of banks = 1 - 4
Max. switching cycles = 1 - 10 000
Set point cos
ϕ
= 0.7 ... 1.00 ind. or cap.
Limiting value cos
ϕ
= 0.00 ... 1.00 ind. or cap.
Method of operation = direct, integrating
Discharge blocking time = 1 - 7200 s
Dead time = 1 - 120 s
Power on delay = 1 - 7200 s
Duration of integration = 1 - 7200 s
High harmonic protection Voltage THD start value = 5 - 50%
Voltage THD time delay = 0.01 - 360.00 s
Time = 0.05 - 360.00 s
RMS voltage start value = 0.10 - 1.00 U
n
Switching resonance protection Voltage THD start value = 5 - 50%
Delta voltage THD start value = 1 - 50 %
Voltage THD time delay = 0.01 - 60.00 s
t = 0.05 ... 60.00 s
PFC OP time = 0.01 - 120.00 s
RMS voltage start value = 0.10 - 1.00 U
n
Table 6: ANSI code protection functions and parameters