The old circuit breaker operation counter value can be used by adding the value tothe InitCBRemLife parameter. The value can be reset using the Clear menu fromLHMI or by activating the input RSTCBWR.15.4.7.4 Accumulated energy GUID-0163FF0F-6E18-4CDC-87AA-578304E0872E v11The Accumulated energy subfunction calculates the accumulated energy (Iyt) basedon current samples, where the setting CurrExponent (y) ranges from 0.5 to 3.0. Theoperation is described in figure 273.The TRCMD output is enabled when either of the trip indications from the trip coilcircuit TRIND is high or the breaker status is OPENPOS.POSCLOSEBLOCKBLKALMAccumulatedenergycalculationAlarm limitCheckI3P-ILRMSPHLRSTIPOWTRINDIPOWPHIPOWALPHIPOWLOPHI3P-ILTRCMDIEC12000619-3-en.vsdIEC12000619 V3 EN-USFigure 273: Functional module diagram for estimating accumulated energyAccumulated energy calculationAccumulated energy can be calculated either with TRIND or POSCLOSE byselecting the AccSelCal parameter value accordingly.The calculation is initiated with the POSCLOSE or TRIND input events. It endswhen the RMS current is lower than the AccStopCurr setting.The ContTrCorr setting is used to determine the accumulated energy in relation tothe time the main contact opens. If the setting is positive, the calculation of energystarts after the auxiliary contact has opened and the delay equal to the value of theContTrCorr setting has passed. When the setting is negative, the calculation startsin advance by the correction time in relation to when the auxiliary contact opened.Section 15 1MRK 505 394-UEN AMonitoring548 Line differential protection RED650 2.2 IECTechnical manual
