Protection - DEMA 400 Series User Manual

EŞİK-1 I_PFRC_1
EŞİK-2 I_PFRC_2
EŞİK-3 I_PFRC_3
EŞİK-4 I_PFRC_4
EŞİK-5 I_PFRC_5
EŞİK-6 I_PFRC_6
Rate of Change of Frequency Protection Function Symbols
The menu view is as follows. The menu consists of four lines.
4.3.4.3.1

Protection

It can be selected 'Active' or 'Passive'.According to the treshold situation, the protection is
activated in the active state and disabled in the passive state.
4.3.4.3.2 Start Value
It is the screen where the Rate of Change of Frequency Protection is set when the protection is
active. Selection is made (+10 – -10) Hz/s range.
Rate of Change of Frequency Protection Display
(df/dt)> 81R-I-1
(df/dt)>> 81R-I-2
(df/dt)>>> 81R-I-3
(df/dt)>>>> 81R-I-4
(df/dt)>>>>> 81R-I-5
(df/dt)>>>>>> 81R-I-6
90