Section 5 1MAC309294-MB FControl functions336 RER620Technical Manual5.3.9 Technical dataTable 310: 25 technical data5.4 Loop control (DLCM)5.4.1 Identification5.4.2 Function blockFigure 177: Function block5.4.3 FunctionalityThe loop control functionality enables proper switching of recloser in order to sectionalizethe faulted section from the distribution system. The function can be operated in threemodes, based on the type of the recloser in the loop control scheme. The full scheme ofloop control typically consists of three types of recloser used in the loop control systemdesign. They are sectionalizer recloser, mid-point recloser and tie-point recloser. Thefunctionality of loop control function in different modes is clearly explained in the nextsections of the document.Characteristic ValueOperation accuracy Depending on the frequency of the voltagemeasured: f n ±1 HzVoltage: ±3.0% of the set value or ±0.01 x V nFrequency: ±10 mHzPhase angle: ±3°Reset time < 50 msReset ratio Typical 0.96Operate time accuracy in definite time mode ±1.0% of the set value or ±20 msFunctional description IEC 61850identificationIEC 60617identificationANSI/IEEE C37.2device numberLoop control DLCM DLCM DLCMSWOTFDLCMS1_V_AS1_V_BS1_V_CS2_V_BS2_V_CS2_V_AS1_ENABLES2_ENABLEBLOCKS1_STATUSS2_STATUSLCM_TRIPLCM_CLOSERESET_INS1_DISABLEDS2_DISABLEDRESET_OUTSET_GROUP_CHANGE
