GE L30 Instruction Manual page 364

Line current differential system
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SYSTEM SETUP
CHAPTER 5: SETTINGS
— If the mode is selected as three-pole, this setting has no function. If the mode is selected as single-
BREAKER 1 ΦC OPENED
pole, this input is used to track the breaker phase C opened position as outlined for phase A.
— This setting specifies the required interval to overcome transient disagreement between the 52/a
BREAKER 1 TOPERATE
and 52/b auxiliary contacts during breaker operation. If transient disagreement still exists after this time has expired, the
FlexLogic operand is asserted for alarm or blocking purposes.
BREAKER 1 BAD STATUS
— This setting selects an operand, usually an external contact input connected to a breaker alarm
BREAKER 1 EXT ALARM
reporting contact. While the selected operand is active, the
operand is activated.
BREAKER 1 TROUBLE
— This setting specifies the delay interval during which a disagreement of status among the three-
BREAKER 1 ALARM DELAY
pole position tracking operands does not declare a pole disagreement. This allows for non-simultaneous operation of the
poles.
— This setting specifies the seal-in time of the three-pole open command initiated by either the
BREAKER 1 OPEN SEAL-IN
Trip Out element or a manual open command to the circuit breaker.
— This setting specifies the seal-in time of the close commands due to an operator-initiated
MANUAL CLOSE RECAL1 TIME
manual close command to the circuit breaker.
— Selects an operand indicating that breaker 1 is out-of-service.
BREAKER 1 OUT OF SV
— This setting selects a contact input to show whether the breaker is racked-in or racked-out. The
BREAKER 1 RACKED-IN
racked-in or racked-out status is used to indicate dynamically the status of breaker symbol, only applied in the single-line
diagram in the graphical front panel. If this setting is set to Off, the racked status is not considered.
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L30 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL

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