Woodward HighPROTEC MRU4, Руководство пользователя

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f-Protection Module – Frequency [81O/U, 78, 81R]
Parameter Description Setting range Default Menu path
f< Pick-up value for
underfrequency.
Only available if: Device
planning: f.Mode = f< Or
f< and df/dt Or f< and DF/
DT
40.00 - 69.95Hz 49.00Hz [Protection Para
/<n>
/f-Prot
/f[1]]
t Tripping delay
Only available if: Device
planning: f.Mode = f< Or
f>Or f> and df/dt Or f<
and df/dt
0.00 - 3600.00s 1.00s [Protection Para
/<n>
/f-Prot
/f[1]]
df/dt Measured value
(calculated): Rate-of-
frequency-change.
Only available if: Device
planning: f.Mode = df/dt
Or f< and df/dt Or f> and
df/dt
0.1 - 10.0Hz/s 1.0Hz/s [Protection Para
/<n>
/f-Prot
/f[1]]
t-df/dt Trip delay df/dt 0.00 - 300.00s 1.00s [Protection Para
/<n>
/f-Prot
/f[1]]
DF Frequency difference for
the maximum admissable
variation of the mean of
the rate of frequency-
change. This function is
inactive if DF=0.
Only available if: Device
planning: f.Mode = f<
and DF/DT Or f> and DF/
DT
0.0 - 10.0Hz 1.00Hz [Protection Para
/<n>
/f-Prot
/f[1]]
DT Time interval of the
maximum admissable
rate-of-frequency-
change.
Only available if: Device
planning: f.Mode = f<
and DF/DT Or f> and DF/
DT
0.1 - 10.0s 1.00s [Protection Para
/<n>
/f-Prot
/f[1]]
Page 262 EN MRU4 10/09