GE Digital Energy L30, Инструкция по эксплуатации, Страница: 213 / 644

GE Multilin L30 Line Current Differential System 5-87
5 SETTINGS 5.4 SYSTEM SETUP
5
• SWITCH 1 OPEN: This setting selects an operand that creates a programmable signal to operate an output relay 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 an output relay 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 52/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.
• SWITCH 1

A/3P OPND: This setting selects an operand, usually a contact input, that should be a normally-closed
52/b status input to create a logic 1 when the disconnect switch is open. If a separate 52/b contact input is not avail-
able, then the inverted
SWITCH 1 CLOSED
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 52/a
and 52/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 L30 is in “Programmed” mode and not in the local control mode.
NOTE