GE Multilin
L60 Line Phase Comparison System
5-159
5 SETTINGS
5.5 GROUPED ELEMENTS
5
j) OPEN BREAKER ECHO
PATH: SETTINGS
GROUPED ELEMENTS
PHASE COMPARISON ELEMENTS
OPEN BREAKER ECHO
As operation of the permissive tripping mode of phase comparison protection and tripping of the line is fundamentally
dependent on transmitting the signal to the remote end of the line, some cases of system operating conditions require
attention:
1.
If a line is open at one end, the phase comparison element is unable to detect an internal fault and give trip permission
to the remote terminal relay.
2.
A weak-infeed or no fault infeed at one end of the faulted line may prevent phase comparison element trip. Conse-
quently, instant conversion from weak-infeed logic with sending permissive continuous signal to fault logic with sending
square waves is required in case of the external fault at the adjacent or internal fault for proper operation of phase
comparison relay at the remote line's terminal.
The open breaker echo element should be applied to any particular application according to local system conditions. The
element settings are described below:
•
OPEN BREAKER KEYING
: Disables/enables the open breaker keying feature.
•
BRK 1 AUX CONTACT
: Assigns a FlexLogic operand to control open/close state of breaker 1 with either 52a or 52b
type contact to create logic “1” when the breaker is open.
•
BRK 1 CONT SUPV
: Selects a supervising element such as a test/normal switch usually used in breaker 1 control
schemes or any other elements. If no element is required, the default value “Off” should be used.
•
BRK 2 AUX CONTACT
: If supervision of two breakers is required, this setting is used to assign a FlexLogic operand to
control open/close state of the Breaker #2 with either 52a or 52b type contact to create logic “1” when the breaker is
open.
•
BRK 2 CONT SUPV
: Selects a supervising element such as a test/normal switch usually used in breaker 2 control
schemes or any other elements. If no element is required, the default value “Off” should be used.
•
OPEN BREAKER KEYING PKP DELAY
: Delays the operation of open breaker keying to override disagreement
between main and auxiliary contacts of the breaker or any other operating conditions.
OPEN BREAKER
ECHO
OPEN BREAKER KEYING:
Disabled
Range: Disabled, Enabled
MESSAGE
BRK 1 AUX CONTACT:
Off
Range: FlexLogic operand
MESSAGE
BRK 1 CONT SUPV:
Off
Range: FlexLogic operand
MESSAGE
BRK 2 AUX CONTACT:
Off
Range: FlexLogic operand
MESSAGE
BRK 2 CONT SUPV:
Off
Range: FlexLogic operand
MESSAGE
OPEN BREAKER KEYING
PKP DELAY: 0.000 s
Range: 0.000 to 50.000 s in steps of 0.001
MESSAGE
OPEN BREAKER KEYING
RST DELAY: 0.000 s
Range: 0.000 to 50.000 s in steps of 0.001
MESSAGE
WEAK-INFEED KEYING:
Off
Range: FlexLogic operand
MESSAGE
WEAK-INFEED SUPV:
Off
Range: FlexLogic operand
MESSAGE
WEAK-INFEED PICKUP
DELAY: 0.000
s
Range: 0.000 to 50.000 s in steps of 0.001
MESSAGE
WEAK-INFEED RESET
DELAY: 0.035
s
Range: 0.000 to 50.000 s in steps of 0.001
Summary of Contents for L60
Page 10: ...x L60 Line Phase Comparison System GE Multilin TABLE OF CONTENTS ...
Page 57: ...GE Multilin L60 Line Phase Comparison System 2 27 2 PRODUCT DESCRIPTION 2 3 SPECIFICATIONS 2 ...
Page 58: ...2 28 L60 Line Phase Comparison System GE Multilin 2 3 SPECIFICATIONS 2 PRODUCT DESCRIPTION 2 ...
Page 482: ...6 26 L60 Line Phase Comparison System GE Multilin 6 5 PRODUCT INFORMATION 6 ACTUAL VALUES 6 ...
Page 554: ...10 8 L60 Line Phase Comparison System GE Multilin 10 2 BATTERIES 10 MAINTENANCE 10 ...
Page 674: ...B 110 L60 Line Phase Comparison System GE Multilin B 4 MEMORY MAPPING APPENDIX B B ...
Page 704: ...C 30 L60 Line Phase Comparison System GE Multilin C 7 LOGICAL NODES APPENDIX C C ...
Page 720: ...E 10 L60 Line Phase Comparison System GE Multilin E 1 PROTOCOL APPENDIX E E ...
Page 732: ...F 12 L60 Line Phase Comparison System GE Multilin F 2 DNP POINT LISTS APPENDIX F F ...
Page 742: ...H 8 L60 Line Phase Comparison System GE Multilin H 3 WARRANTY APPENDIX H H ...