GE C70 Instruction Manual page 469

Capacitor bank protection and control system
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CHAPTER 5: SETTINGS
— Similar to the
CAP 1 LCL SET MAN
— Selects up to six FlexLogic operands to activate the
CAP 1 TRIP 1(6)
prevail. Expected to be set to the appropriate protection element operate operand.
CAP 1 SWITCH TO MANUAL ON TRIP
"Yes," the element switches to manual mode upon tripping the bank from protection.
— Selects a FlexLogic operand to enable automatic open/close control. It is expected to be set to
CAP 1 AUTO CTRL EN
to obtain the baseline functionality, but variations are possible.
IN AUTO
— Similar to previous setting, but enables manual controls. Expected to be set to
CAP 1 MAN CTRL EN
— Selects a FlexLogic operand to activate the
CAP 1 REMOTE OPEN
control are enabled. It is expected to be set to a virtual input, and that the contact output wired to the capacitor breaker
trip coil is set to
CAP 1 BKR
TRIP.
— Similar to previous setting, but requires both local and manual control to be enabled. Expected to be
CAP 1 LOCAL OPEN
set to a pushbutton "on" operand.
— Similar to previous setting, but requires automatic control to be enabled. Expected to be set to the open
CAP 1 AUTO OPEN
command of the voltage regulator either built-in or customer via FlexLogic.
— Selects a FlexLogic operand that cancels the trip seal-in. Expected to be set to the contact input to
CAP 1 BKR OPEN 52b
which a contact is wired that is closed when the capacitor breaker is open. When both 52a and 52b contacts are used for
security, the appropriate filtering logic possibly including discrepancy alarming can be programmed in FlexLogic, and the
resulting virtual output can be configured under this setting.
— Sets a maximum trip seal-in duration for where the
CAP 1 TRIP SEAL-IN DELAY
or fails to operate.
— Similar to the
CAP 1 REMOTE CLOSE
— Similar to the
CAP 1 LOCAL CLOSE
— Similar to the
CAP 1 AUTO CLOSE
— Similar to the
CAP 1 BKR CLSD 52a
contact that is closed when the breaker is closed. The selected operand also triggers the
52a and 52b contacts are used for security, the appropriate filtering logic possibly including discrepancy alarming can be
programmed in FlexLogic, and the resulting virtual output can be configured under this setting.
— Sets a maximum close seal-in duration for where the
CAP 1 CLOSE SEAL-IN DELAY
configured or fails to operate.
— Sets a time delay that inhibits closing after the bank has been switched out-of-service (the
CAP 1 DISCHARGE TIME
setting goes low or trip command terminates) until the bank has had time to discharge any trapped charge.
BKR CLSD 52a
The correct value for this setting depends on the specifics of the capacitor installation.
— Selects a FlexLogic operand that triggers the CAP 1 BKR CLOSE interlock logic. Its signal is expected
CAP 1 BKR CLOSE BLK
to originate from capacitor breaker trips external to the relay, and thus not otherwise able to block relay closing (for
example, from the opposite group's capacitor protection).
— Selects a FlexLogic operand that overrides all inhibits for the breaker close command and allows the
CAP 1 CLS OVERRIDE
CLOSE command to be issued from any source as per the logic diagram.
C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL
setting, but selects manual mode.
CAP LCL SET AUTO
— Allows control of the auto/manual mode when issuing a trip command. When set to
setting, but closes the breaker.
CAP 1 REMOTE OPEN
setting, but closes the breaker.
CAP 1 LOCAL OPEN
setting, but closes the breaker.
CAP 1 AUTO OPEN
setting, but cancels the close seal-in, and is expected to be set to a
CAP 1 BKR OPEN 52b
operand, no matter what control modes
CAP 1 BKR TRIP
operand when both remote and manual
CAP 1 BKR TRIP
CAP 1 BKR OPEN 52b
CAP 1 DISCHARGE TIME
CAP BKR CLSD 52a
CONTROL ELEMENTS
CAP 1
CAP 1 IN
MAN.
setting is not configured
. When both
setting is not
CAP
5-265
5

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