CHAPTER 5: SETTINGS CONTROL ELEMENTS
L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-335
5
The trip output element is primarily used to collect trip requests from protection elements and other inputs to generate
output operands to initiate trip operations. Three pole trips only initiate reclosure if programmed to do so, whereas single
pole trips always automatically initiate reclosure. The TRIP 3-POLE and TRIP 1-POLE output operands can also be used as
inputs to a FlexLogic OR gate to operate the faceplate Trip indicator LED.
5.8.5.1 Three pole operation
In applications where single-pole tripping is not required this element provides a convenient method of collecting inputs to
initiate tripping of circuit breakers, the reclose element and breaker failure elements.
5.8.5.2 Single pole operation
This 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 Custom
Range: Pole Curr OR Custom, CBaux OR Custom,
Custom
START TMR Z2PH Inp1:
Off
Range: FlexLogic operand
START TMR Z2PH Inp2:
Off
Range: FlexLogic operand
START TMR Z2GR Inp1:
Off
Range: FlexLogic operand
START TMR Z2GR Inp2:
Off
Range: FlexLogic operand
PH SELECTOR RESET
DELAY: 0.500 s
Range: 0.500 to 3.000 s in steps of 0.001 s
PH SELECTOR RESET:
Off
Range: FlexLogic operand
TRIP FORCE 3-POLE:
Off
Range: FlexLogic operand
TRIP PILOT PRIORITY:
0.000 s
Range: 0 to 65.535 s in steps of 0.001
REVERSE FAULT:
Off
Range: FlexLogic operand
TRIP DELAY ON EVOLV
FAULTS: 0.000 s
Range: 0 to 65.535 s in steps of 0.001
BKR A OPEN:
Off
Range: FlexLogic operand
BKR B OPEN:
Off
Range: FlexLogic operand
BKR C OPEN:
Off
Range: FlexLogic operand
TRIP EVENTS:
Disabled
Range: Enabled, Disabled
This element must be used in single pole operation applications.
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