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GE Multilin
L60 Line Phase Comparison System
5-211
5 SETTINGS
5.6 CONTROL ELEMENTS
5
The trip output element is primarily used to collect trip requests from protection elements and other inputs to generate out-
put operands to initiate trip operations. Three pole trips will only initiate reclosure if programmed to do so, whereas single
pole trips will 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.
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.
SINGLE POLE OPERATION:
This element must be used in single pole operation applications.
In these applications this element is used to:
•
Determine if a single pole operation should 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.
The trip output element works in association with other L60 elements (refer to chapter 8 for a complete description of single
pole operations) that must be programmed and in-service for successful operation. The necessary elements are: recloser,
breaker control, open pole detector, and phase selector. The recloser must also be in the “Reset” state before a single pole
trip can be issued. Outputs from this element are also directly connected as initiate signals to the breaker failure elements.
At least one internal protection element or digital input representing detection of a fault must be available as an input to this
element. In pilot-aided scheme applications, a timer can be used to delay the output decision until data from a remote ter-
minal is received from communications facilities, to prevent a three pole operation where a single pole operation is permit-
ted.
•
TRIP MODE
: This setting is used to select the required mode of operation. If selected to “3 Pole Only” outputs for all
three phases are always set simultaneously. If selected to “3 Pole & 1 Pole” outputs for all three phases are set simul-
taneously unless the phase selector or a pilot aided scheme determines the fault is single-phase-to-ground. If the fault
is identified as being AG, BG or CG only the operands for the faulted phase will be asserted.
•
TRIP 3-POLE INPUT-1
to
TRIP 3-POLE INPUT-6
: These settings are used to select an operand representing a fault
condition that is not desired to initiate a single pole operation (for example, phase undervoltage). Use a FlexLogic OR-
gate if more than six inputs are required.
•
TRIP 1-POLE INPUT-1
to
TRIP 1-POLE INPUT-6
: These settings are used to select an operand representing a fault
condition that is desired to initiate a single pole trip-and-reclose if the fault is single phase to ground (for example, dis-
tance zone 1). Use a FlexLogic™ OR-gate if more than six inputs are required. The inputs do not have to be phase-
specific as the phase selector determines the fault type.
The
AR FORCE 3-P TRIP
operand is asserted by the autorecloser 1.5 cycles after single-pole reclosing is initiated. This
operand calls for a three-pole trip if any protection element configured under
TRIP 1-POLE INPUT
remains picked-up. The
open pole detector provides blocking inputs to distance elements, and therefore the latter will reset immediately after
the
TRIP 1-POLE
operand is asserted. For other protection elements used in single-pole tripping, the user must ensure
they will reset immediately after tripping, otherwise the fact that they are still picked up will be detected as an evolving
fault and the relay will trip three-poles. For example, if high-set phase instantaneous overcurrent is used (
TRIP 1-POLE
INPUT X:
“
PHASE IOC1 OP
”), then
OPEN POLE OP
Φ
A
shall be used for blocking phase A of the instantaneous overcur-
rent element. In this way, after tripping phase A, the phase a instantaneous overcurrent element is forced to reset.
Phases B and C are still operational and can detect an evolving fault as soon as 8 ms after tripping phase A. Neutral
and negative-sequence instantaneous overcurrent elements shall be blocked from the
OPEN POLE BLK N
operand
unless the pickup setting is high enough to prevent pickup during single-pole reclosing.
•
TRIP RECLOSE INPUT-1
to
TRIP RECLOSE INPUT-6
: These settings select an operand representing a fault condi-
tion that is desired to initiate three pole reclosing (for example, phase distance zone 1). Use a FlexLogic™ OR-gate if
more than six inputs are required.
NOTE
Summary of Contents for UR series
Page 2: ......
Page 4: ......
Page 12: ...xii L60 Line Phase Comparison System GE Multilin TABLE OF CONTENTS ...
Page 32: ...1 20 L60 Line Phase Comparison System GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1 ...
Page 54: ...2 22 L60 Line Phase Comparison System GE Multilin 2 2 SPECIFICATIONS 2 PRODUCT DESCRIPTION 2 ...
Page 438: ...7 8 L60 Line Phase Comparison System GE Multilin 7 2 TARGETS 7 COMMANDS AND TARGETS 7 ...
Page 478: ...8 40 L60 Line Phase Comparison System GE Multilin 8 3 FAULT LOCATOR 8 THEORY OF OPERATION 8 ...
Page 502: ...A 10 L60 Line Phase Comparison System GE Multilin A 1 PARAMETER LIST APPENDIXA A ...
Page 584: ...B 82 L60 Line Phase Comparison System GE Multilin B 4 MEMORY MAPPING APPENDIXB B ...
Page 622: ...D 10 L60 Line Phase Comparison System GE Multilin D 1 PROTOCOL APPENDIXD D ...
Page 634: ...E 12 L60 Line Phase Comparison System GE Multilin E 2 DNP POINT LISTS APPENDIXE E ...
Page 642: ...F 8 L60 Line Phase Comparison System GE Multilin F 3 WARRANTY APPENDIXF F ...