GE Multilin D60 Line Distance Relay 5-1675 SETTINGS 5.6 CONTROL ELEMENTS5The autoreclose scheme is intended for use on transmission lines with circuit breakers operated in both the single pole andthree pole modes, in one or two breaker arrangements. The autoreclose scheme provides four programs with differentoperating cycles, depending on the fault type. Each of the four programs can be set to trigger up to two reclosing attempts.The second attempt always performs three pole reclosing and has an independent dead time delay.When used in two breaker applications, the reclosing sequence is selectable. The reclose signal can be sent to oneselected breaker only, to both breakers simultaneously or to both breakers in sequence (one breaker first and then, after adelay to check that the reclose was successful, to the second breaker). When reclosing in sequence, the first breakershould reclose with either the 1-Pole or 3-Pole dead time according to the fault type and reclose mode; the second breakershould follow the successful reclosure of the first breaker. When reclosing simultaneously, for the first shot both breakersshould reclose with either the 1-Pole or 3-Pole dead time, according to the fault type and the reclose mode.The signal used to initiate the autoreclose scheme is the trip output from protection. This signal can be single pole trippingfor single phase faults and three phase tripping for multiphase faults. The autoreclose scheme has five operating states.MESSAGE AR BKR CLOSED:OffRange: FlexLogic™ operandMESSAGE AR BLOCK:OffRange: FlexLogic™ operandMESSAGE AR PAUSE:OffRange: FlexLogic™ operandMESSAGE AR INCOMPLETE SEQTIME: 5.00 sRange: 0 to 655.35 s in steps of 0.01MESSAGE AR BLOCK BKR2:OffRange: FlexLogic™ operandMESSAGE AR CLOSE TIME BKR2:0.10 sRange: 0.00 to 655.35 s in steps of 0.01MESSAGE AR TRANSFER 1 TO 2:NoRange: Yes, NoMESSAGE AR TRANSFER 2 TO 1:NoRange: Yes, NoMESSAGE AR BKR1 FAIL OPTION:ContinueRange: Continue, LockoutMESSAGE AR BKR2 FAIL OPTION:ContinueRange: Continue, LockoutMESSAGE AR 1-P DEAD TIME:1.00 sRange: 0 to 655.35 s in steps of 0.01MESSAGE AR BKR SEQUENCE:1-2Range: 1, 2, 1&2, 1–2, 2–1MESSAGE AR TRANSFER TIME:4.00 sRange: 0 to 655.35 s in steps of 0.01MESSAGE AR EVENT:DisabledRange: Enabled, DisabledSTATE CHARACTERISTICSEnabled Scheme is permitted to operateDisabled Scheme is not permitted to operateReset Scheme is permitted to operate and shot count is reset to 0Reclose In Progress Scheme has been initiated but the reclose cycle is not finished (successful or not)Lockout Scheme is not permitted to operate until reset received
