Name Values (Range) Unit Step Default DescriptionCBReadyType COOCO- - CO Select type of circuit breaker ready signalCO/OCOt2 3Ph 0.00 - 6000.00 s 0.01 30.00 Open time for shot 2, three-phaset3 3Ph 0.00 - 6000.00 s 0.01 30.00 Open time for shot 3, three-phaset4 3Ph 0.00 - 6000.00 s 0.01 30.00 Open time for shot 4, three-phaset5 3Ph 0.00 - 6000.00 s 0.01 30.00 Open time for shot 5, three-phasetInhibit 0.000 - 60.000 s 0.001 5.000 Inhibit reclosing reset timeFollow CB DisabledEnabled- - Disabled Advance to next shot if CB has been closedduring dead timeAutoCont DisabledEnabled- - Disabled Continue with next reclosing-shot if breaker didnot closetAutoContWait 0.000 - 60.000 s 0.001 2.000 Wait time after close command beforeproceeding to next shotUnsucClByCBChk NoCBCheckCB check- - NoCBCheck Unsuccessful closing signal obtained bychecking CB positionBlockByUnsucCl DisabledEnabled- - Disabled Block AR at unsuccessful reclosingZoneSeqCoord DisabledEnabled- - Disabled Coordination of down stream devices to localprotection unit’s AR11.2.6 Operation principle11.2.6.1 Auto-reclosing operationDisabled andEnabledOperation of the automatic reclosing can be set to Off or On via the setting parameters andthrough external control. With the setting Operation = Enabled, the function is activatedwhile with the setting Operation = Disabled the function is deactivated. With the settingOperation = External ctrl, the activation/deactivation is made by input signal pulses, forexample, from a control system.When the function is set Enabled and is operative the output SETON is activated (high).Other input conditions such as 52a and CBREADY must also be fulfilled. At this point theautomatic recloser is prepared to start the reclosing cycle and the output signal READYon the STBRREC (79) function block is activated (high).11.2.6.2 Initiate auto-reclosing and conditions for initiation of a reclosing cycleThe usual way in which to initiate a reclosing cycle, or sequence, is to initiate it when a lineprotection tripping has occurred, by applying a signal to the RI input.For a new auto-reclosing cycle to be started, a number of conditions need to be met. Theyare linked to dedicated inputs. The inputs are:1MRK 506 335-UUS A Section 11Control367Technical manual
