Sepam - HV/MV Protection and control units (ENG) - Trinet

InstallationUse and connection of current inputs to CSPs (cont’d)Selection of operating modes(microswitches)The operating mode is selected by settingmicroswitches on the rear of the device. They mustbe set prior before Sepam 2000 is switched on, whileit is de-energized.Set microswitches SW1 and SW2 in accordance withthe chart opposite. They are to be set according to:c the CSP model used (30 A-300 A, 160 A-1600 A,500 A-2500 A),c the rated current of the protected installation,c the earth fault current measurement method(sum or core balance CT).N.B.: when the rated current of the electricalinstallation to be protected does not appear inthe chart, choose the column that corresponds tothe current rating immediately above.Example of microswitch settingThis example indicates the microswitch settingin the following case:c network rated current: 160 A.c CSP sensor used: model 160-1600 A.c residual current measured by the sum ofthe 3 phase currents.Microswitch setting chartCorrespondence between sensor rating and SW1 and SW2 microswitch settingsCSP network rated current In (in Amps)sensorcurrent range30-300 A 30 36 45 60 75 90 120 150 180 225 300160-1600 A 160 192 240 320 400 480 640 800 960 1200 1600500-2500 A 500 600 750 1000 1250 1500 2000 2500SW2: phase current0 10 10 10 10 10 10 10 10 10 10 1phase 1phase 2phase 30 1167SW212131812 SW1SW1: residual current measured by the sum of the 3 phase currentsSOM1SOM20 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1SW1: residual current measured by core balance CT0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1SOM 1 and SOM 2 are parameters to be set in the pocket terminal status menu.In is a parameter to be in the pocket terminal status menu.1/14 Installation - Use - General characteristics - Testing