1MRS751802-MUM REX 521101Protection RelayTechnical Reference Manual, Standard ConfigurationsFig. 7.1.10.-2 Input and output signal overview for the auto-reclose function7.1.11. Uo>, Uo>> and Uo>>>The residual overvoltage protection function blocks are designed for sensitive earthfault protection whenever the DT characteristic is appropriate. Suppression ofharmonics is possible.Fig. 7.1.11.-1 Function block symbol of Uo>, Uo>> and Uo>>>O-->IAR1AR2AR3AR4DEFTRIPLOCKOUTROPENRCLOSESHOT1SHOT2SHOT3SHOT4SHOT5AR1TRIPAR2TRIPAR3TRIPAR4TRIPCB FAILDEFTRIPLOCKOUTTRDUETDDUEACTIVESHOT_ALARMDI1...DI9DI1...DI9O->1 ActiveO->1 Alarm 1O->1 Alarm 2O->I 3I> StartO->I 3I>> StartO->I 3I>>> Start...Ext. startO->I Trip 3I>O->I Trip 3I>>O->I Trip 3I>>>...Ext. tripARINHARONCBOPENCBCLOSERESETSHOT1SHOT2SHOT3SHOT4SHOT5TRDUETDDUEACTIVEAR1TRIPAR2TRIPAR3TRIPAR4TRIPCBFAILDEFTRIPLOCKOUTSHOT_ALARMAR1TRIPAR2TRIPAR3TRIPAR4TRIPCBFAILDEFTRIPLOCKOUTSHOT_ALARMDI1...DI9DI1...DI9CB pos. openCB pos. closeResetAutorcloseInput SWGRP Output SWGRPInitiation signalsResidual over voltage protection, low-set stage, Uo>, high-set stage, Uo>> andinstantaneous stage, Uo>>>Start voltage 2.0...100.0% UnOperate time 0.05...300.00 sOperation mode Not in useDefinite timeMeasuring mode Peak-to-peakFundam.freq.Note! The values below apply when f/fn = 0.95...1.05Operation accurcy ±2.5% of set value or ±0.01 x UnBS1BS2GROUPRESETSTARTTRIPUo>BS1BS2GROUPRESETSTARTTRIPUo>>BS1BS2GROUPRESETSTARTTRIPUo>>>
