Table 166:EFPIOC Output signalsName Type DescriptionTRIP BOOLEAN Trip signal8.3.5 SettingsTable 167:EFPIOC Group settings (basic)Name Values (Range) Unit Step Default DescriptionOperation OffOn- - Off Operation Off / OnIN>> 5 - 2500 %IB 1 200 Operate residual current level in % ofIBaseTable 168:EFPIOC Group settings (advanced)Name Values (Range) Unit Step Default DescriptionStValMult 0.5 - 5.0 - 0.1 1.0 Multiplier for operate current levelTable 169:EFPIOC Non group settings (basic)Name Values (Range) Unit Step Default DescriptionGlobalBaseSel 1 - 12 - 1 1 Selection of one of the Global Base Valuegroups8.3.6 Monitored dataTable 170:EFPIOC Monitored dataName Type Values (Range) Unit DescriptionIN REAL - A Residual current8.3.7 Operation principleThe sampled analog residual currents are pre-processed in a discrete Fourier filter(DFT) block. From the fundamental frequency components of the residual current, aswell as from the sample values the equivalent RMS value is derived. This currentvalue is fed to the Instantaneous residual overcurrent protection (EFPIOC). In acomparator the RMS value is compared to the set operation current value of thefunction (IN>>). If the residual current is larger than the set operation current a signalfrom the comparator is set to true. This signal will, without delay, activate the outputsignal TRIP.Section 8 1MRK502052-UEN BCurrent protection352Technical manual
