GE Multilin
L90 Line Current Differential System
5-95
5 SETTINGS
5.4 SYSTEM SETUP
5
•
SWITCH 1 OPEN:
This setting selects an operand that creates a programmable signal to operate a contact output to
open disconnect switch 1.
•
SWITCH 1 BLK OPEN
: This setting selects an operand that prevents opening of the disconnect switch. This setting
can be used for select-before-operate functionality or to block operation from a panel switch or from SCADA.
•
SWITCH 1 CLOSE:
This setting selects an operand that creates a programmable signal to operate a contact output to
close disconnect switch 1.
•
SWITCH 1 BLK CLOSE
: This setting selects an operand that prevents closing of the disconnect switch. This setting
can be used for select-before-operate functionality or to block operation from a panel switch or from SCADA.
•
SWTCH 1
A/3P CLSD:
This setting selects an operand, usually a contact input connected to a disconnect switch
auxiliary position tracking mechanism. This input should be a normally-open 89/a status input to create a logic 1 when
the disconnect switch is closed. If the
SWITCH 1 MODE
setting is selected as “3-Pole”, this setting selects a single input
as the operand used to track the disconnect switch open or closed position. If the mode is selected as “1-Pole”, the
input mentioned above is used to track phase A and the
SWITCH 1
B
and
SWITCH 1
C
settings select operands to
track phases B and C, respectively.
•
SWTCH 1
A/3P OPND:
This setting selects an operand, usually a contact input, that should be a normally-closed 89/
b status input to create a logic 1 when the disconnect switch is open. If a separate 89/b contact input is not available,
then an inverted 89/a status signal can be used.
•
SWITCH 1
B CLOSED:
If the mode is selected as three-pole, this setting has no function. If the mode is selected as
single-pole, this input is used to track the disconnect switch phase B closed position as above for phase A.
•
SWITCH 1
B OPENED:
If the mode is selected as three-pole, this setting has no function. If the mode is selected as
single-pole, this input is used to track the disconnect switch phase B opened position as above for phase A.
•
SWITCH 1
C CLOSED:
If the mode is selected as three-pole, this setting has no function. If the mode is selected as
single-pole, this input is used to track the disconnect switch phase C closed position as above for phase A.
•
SWITCH 1
C OPENED:
If the mode is selected as three-pole, this setting has no function. If the mode is selected as
single-pole, this input is used to track the disconnect switch phase C opened position as above for phase A.
•
SWITCH 1 Toperate
: This setting specifies the required interval to overcome transient disagreement between the 89/a
and 89/b auxiliary contacts during disconnect switch operation. If transient disagreement still exists after this time has
expired, the
SWITCH 1 BAD STATUS
FlexLogic operand is asserted from alarm or blocking purposes.
•
SWITCH 1 ALARM DELAY:
This setting specifies the delay interval during which a disagreement of status among the
three-pole position tracking operands will not declare a pole disagreement. This allows for non-simultaneous operation
of the poles.
IEC 61850 functionality is permitted when the L90 is in “Programmed” mode and not in the local control mode.
NOTE
Summary of Contents for UR Series L90
Page 652: ...A 16 L90 Line Current Differential System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Page 772: ...B 120 L90 Line Current Differential System GE Multilin B 4 MEMORY MAPPING APPENDIX B B ...
Page 802: ...C 30 L90 Line Current Differential System GE Multilin C 7 LOGICAL NODES APPENDIX C C ...
Page 812: ...D 10 L90 Line Current Differential System GE Multilin D 1 IEC 60870 5 104 APPENDIX D D ...
Page 824: ...E 12 L90 Line Current Differential System GE Multilin E 2 DNP POINT LISTS APPENDIX E E ...
Page 834: ...F 10 L90 Line Current Differential System GE Multilin F 3 WARRANTY APPENDIX F F ...
Page 846: ...xii L90 Line Current Differential System GE Multilin INDEX ...
