ABB REG316 4 Series - Page 236

ABB Switzerland Ltd REG 316*4 1MRB520049-Uen / Rev. F
3-198
D. Rate-of-change frequency settings – df/dt
Summary of parameters:
Text Unit Default Min. Max. Step
ParSet4..1
P1 Select
Trip 00000000
df/dt Hz/s -1.0 -10.0 +10.0 0.1
Frequency Hz 48.00 00.00 65.00 0.01
BlockVoltage UN 0.2 0.2 0.8 0.1
Delay s 00.10 00.10 60.00 0.01
VoltageInp
CT/VT-Addr.
0
Blocked (U<) SignalAddr
BlockInp BinaryAddr F
Trip SignalAddr ER
Explanation of parameters:
ParSet 4..1
Parameter for determining in which set of parameters a par-
ticular function is active (see Section 5.11.).
Trip
defines the tripping channel activated by the tripping O/P of
the function (matrix tripping logic).
df/dt
Rate-of-change of frequency pick-up setting.
Inadmissible settings:
· df/dt = 0
· df/dt > 0 for absolute frequency settings < f
N
· df/dt < 0 for absolute frequency settings > f
N
.