GE T60 Instruction Manual page 327

Transformer protection system
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CHAPTER 5: SETTINGS
SYSTEM SETUP
— If the mode is selected as three-pole, this setting has no function. If the mode is selected as single-
BREAKER 1 ΦC CLOSED
pole, this input is used to track the breaker phase C closed position as outlined for phase A.
— 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 from 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.
— 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 interval required to maintain setting changes in effect after an
MANUAL CLOSE RECAL1 TIME
operator has initiated a manual close command to operate a circuit breaker.
— Selects an operand indicating that breaker 1 is out-of-service.
BREAKER 1 OUT OF SV
5
T60 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
5-145

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