f-Protection Module – Frequency [81O/U, 78, 81R]
Parameter
Description
Setting range
Default
Menu path
df/dt mode
df/dt mode
Only available if: Device
planning: f.Mode = df/dt
Or f< and df/dt Or f> and
df/dt Only available if:
Device planning: f.Mode
= df/dt Or f< and df/dt Or
f> and df/dt Only
available if: Device
planning: f.Mode = df/dt
absolute df/dt,
positive df/dt,
negative df/dt
absolute df/dt
[Protection Para
/<n>
/f-Prot
/f[1]]
delta phi
Measured value
(calculated): Vector surge
Only available if: Device
planning: f.Mode = delta
phi
1 - 30°
10°
[Protection Para
/<n>
/f-Prot
/f[1]]
EN MRU4 10/09
Page 263
