via the extinguishing capacitors in the circuit breakers. This voltagecan be as high as 30% or more of the base line voltage.Because the setting ranges of the threshold voltages UHighBusEnerg/UHighLineEnerg and ULowBusEnerg/ULowLineEnerg partly overlap each other,the setting conditions may be such that the setting of the non-energized thresholdvalue is higher than that of the energized threshold value. The parameters musttherefore be set carefully to avoid overlapping.UMaxEnergThis setting is used to block the closing when the voltage on the live side is abovethe set value of UMaxEnerg.tAutoEnerg and tManEnergThe purpose of the timer delay settings, tAutoEnerg and tManEnerg, is to ensurethat the dead side remains de-energized and that the condition is not due to atemporary interference. Should the conditions not persist for the specified time, thedelay timer is reset and the procedure is restarted when the conditions are fulfilledagain. Circuit breaker closing is thus not permitted until the energizing conditionhas remained constant throughout the set delay setting time.12.2 Autorecloser for 1 phase, 2 phase and/or 3 phaseoperation SMBRREC IP14559-1 v612.2.1 IdentificationM14890-1 v7Function Description IEC 61850identificationIEC 60617identificationANSI/IEEE C37.2device numberAutorecloser for 1 phase, 2 phase and/or 3phaseSMBRREC5(0 -->1)IEC15000204 V1 EN-US7912.2.2 Application M12391-3 v8Automatic reclosing is a well-established method for the restoration of service in apower system after a transient line fault. The majority of line faults are flashovers,which are transient by nature. When the power line is switched off by the operationof line protection and line breakers, the arc de-ionizes and recovers its ability towithstand voltage at a somewhat variable rate. Thus, a certain dead time with a de-energized line is necessary. Line service can then be resumed by automatic1MRK 505 393-UEN B Section 12ControlLine differential protection RED650 2.2 IEC 229Application manual
