GE C60 Instruction Manual

Also see for C60: Communications manual Communications guide Instruction manual Instruction manual Instruction manual

Contents

5-72 C60 Breaker Management Relay GE Multilin5.6 CONTROL ELEMENTS 5 SETTINGS5b) USE OF SETTINGSAR MODE: This setting selects the AR operating mode, which functions in conjunction with signals received at the initiationinputs as described previously.AR MAX NUMBER OF SHOTS: This setting specifies the number of reclosures that can be attempted before reclosuregoes to Lockout when the fault is permanent.AR BLOCK BKR1: This input selects an operand that will block the reclose command for breaker No.1. This condition canbe for example: breaker low air pressure, reclose in progress on another line (for the central breaker in a breaker and a halfarrangement), or a sum of conditions combined in FlexLogicô.AR CLOSE TIME BKR1:This setting represents the closing time for the breaker No. 1 from the moment the "Close" com-mand is sent to the moment the contacts are closed.AR BKR MAN CLOSE: This setting selects a FlexLogicô operand that represents manual close command to a breakerassociated with the autoreclose schemeAR BLK TIME UPON MAN CLS: The autoreclose scheme can be disabled for a programmable time delay after an associ-ated circuit breaker is manually commanded to close, preventing reclosing onto an existing fault such as grounds on theline. This delay must be longer than the slowest expected trip from any protection not blocked after manual closing. If theautoreclose scheme is not initiated after a manual close and this time expires the autoreclose scheme is set to the Resetstate.AR 1P INIT: This setting selects a FlexLogicô operand that is intended to initiate single Pole autoreclosure.AR 3P INIT: This setting selects a FlexLogicô operand that is intended to initiate three Pole autoreclosure, first timer (AR3P DEAD TIME 1) that can be used for a high-speed autoreclosure.AR 3P TD INIT: This setting selects a FlexLogicô operand that is intended to initiate three Pole autoreclosure, secondtimer (AR 3P DEAD TIME 2) that can be used for a time-delay autoreclosure.AR MULTI-P FAULT: This setting selects a FlexLogicô operand that indicates a multi-phase fault. The operand valueshould be zero for single-phase to ground faults.BKR ONE POLE OPEN: This setting selects a FlexLogicô operand which indicates that the breaker(s) has opened cor-rectly following a single phase to ground fault and the autoreclose scheme can start timing the single pole dead time (for 1-2 reclose sequence for example, breaker No. 1 should trip single pole and breaker No. 2 should trip 3 pole).The scheme has a pre-wired input that indicates breaker(s) status.BKR 3 POLE OPEN: This setting selects a FlexLogicô operand which indicates that the breaker(s) has opened three poleand the autoreclose scheme can start timing the three pole dead time.The scheme has a pre-wired input that indicates breaker(s) status.AR 3-P DEAD TIME 1: This is the dead time following the first three pole trip. This intentional delay can be used for a high-speed three-pole autoreclose. However, it should be set longer than the estimated de-ionizing time following the three-poletrip.AR 3-P DEAD TIME 2: This is the dead time following the second three-pole trip or initiated by the AR 3P TD INIT input.This intentional delay is typically used for a time delayed three-pole autoreclose (as opposed to high speed three-poleautoreclose).AR EXTEND DEAD T 1: This setting selects an operand that will adapt the duration of the dead time for the first shot to thepossibility of non-simultaneous tripping at the two line ends. Typically this is the operand set when the communicationchannel is out of serviceAR DEAD TIME 1 EXTENSION: This timer is used to set the length of the dead time 1 extension for possible non-simulta-neous tripping of the two ends of the line.AR RESET: This setting selects the operand that forces the autoreclose scheme from any state to Reset. Typically this is amanual reset from lockout, local or remote.AR RESET TIME: A reset timer output resets the recloser following a successful reclosure sequence. The setting is basedon the breaker time which is the minimum time required between successive reclose sequences.AR BKR CLOSED: This setting selects an operand that indicates that the breaker(s) are closed at the end of the reset timeand the scheme can reset.www . ElectricalPartManuals . com