CHAPTER 5: SETTINGS CONTROL ELEMENTSL90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-3355The trip output element is primarily used to collect trip requests from protection elements and other inputs to generateoutput operands to initiate trip operations. Three pole trips only initiate reclosure if programmed to do so, whereas singlepole trips always automatically initiate reclosure. The TRIP 3-POLE and TRIP 1-POLE output operands can also be used asinputs to a FlexLogic OR gate to operate the faceplate Trip indicator LED.5.8.5.1 Three pole operationIn applications where single-pole tripping is not required this element provides a convenient method of collecting inputs toinitiate tripping of circuit breakers, the reclose element and breaker failure elements.5.8.5.2 Single pole operationThis element is used to:• Determine if a single pole operation is to be performed• Collect inputs to initiate three pole tripping, the recloser and breaker failure elements• Collect inputs to initiate single pole tripping, the recloser and breaker failure elements• Assign a higher priority to pilot aided scheme outputs than to exclusively local inputs TRIP RESET:CBaux OR CustomRange: Pole Curr OR Custom, CBaux OR Custom,Custom START TMR Z2PH Inp1:OffRange: FlexLogic operand START TMR Z2PH Inp2:OffRange: FlexLogic operand START TMR Z2GR Inp1:OffRange: FlexLogic operand START TMR Z2GR Inp2:OffRange: FlexLogic operand PH SELECTOR RESETDELAY: 0.500 sRange: 0.500 to 3.000 s in steps of 0.001 s PH SELECTOR RESET:OffRange: FlexLogic operand TRIP FORCE 3-POLE:OffRange: FlexLogic operand TRIP PILOT PRIORITY:0.000 sRange: 0 to 65.535 s in steps of 0.001 REVERSE FAULT:OffRange: FlexLogic operand TRIP DELAY ON EVOLVFAULTS: 0.000 sRange: 0 to 65.535 s in steps of 0.001 BKR ΦA OPEN:OffRange: FlexLogic operand BKR ΦB OPEN:OffRange: FlexLogic operand BKR ΦC OPEN:OffRange: FlexLogic operand TRIP EVENTS:DisabledRange: Enabled, DisabledThis element must be used in single pole operation applications.
