CHAPTER 5: SETTINGS SYSTEM SETUPL90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-1355BREAKER 1 FUNCTION — This setting enables and disables the operation of the breaker control feature.BREAKER1 PUSH BUTTON CONTROL — Set to “Enable” to allow faceplate pushbutton operations.BREAKER 1 NAME — Assign a user-defined name (up to six characters) to the breaker. This name is used in flash messagesrelated to breaker 1.BREAKER 1 MODE — Selects “3-Pole” mode, where all breaker poles are operated simultaneously, or “1-Pole” mode where allbreaker poles are operated either independently or simultaneously.BREAKER 1 OPEN — Selects an operand that creates a programmable signal to operate an output relay to open breaker 1.BREAKER 1 BLK OPEN — Selects an operand that prevents opening of the breaker. This setting can be used for select-before-operate functionality or to block operation from a panel switch or from SCADA.BREAKER 1 CLOSE — Selects an operand that creates a programmable signal to operate an output relay to close breaker 1.BREAKER 1 BLK CLOSE — Selects an operand that prevents closing of the breaker. This setting can be used for select-before-operate functionality or to block operation from a panel switch or from SCADA.BREAKER1 ΦA/3P CLOSED — Selects an operand, usually a contact input connected to a breaker auxiliary position trackingmechanism. This input is a normally-open 52/a status input to create a logic 1 when the breaker is closed. If the BREAKER 1MODE setting is selected as “3-Pole,” this setting selects a single input as the operand used to track the breaker open orclosed position. If the mode is selected as “1-Pole,” the input mentioned is used to track phase A and the BREAKER 1 ΦB andBREAKER 1 ΦC settings select operands to track phases B and C, respectively.BREAKER1 ΦA/3P OPND — Selects an operand, usually a contact input, that is a normally-closed 52/b status input to createa logic 1 when the breaker is open. If a separate 52/b contact input is not available, then the inverted BREAKER 1 CLOSEDstatus signal can be used.BREAKER 1 ΦB 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 breaker phase B closed position as outlined for phase A.BREAKER 1 ΦB 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 breaker phase B opened position as outlined for phase A.BREAKER 1 ΦC 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 breaker phase C closed position as outlined for phase A.BREAKER 1 ΦC 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 breaker phase C opened position as outlined for phase A.BREAKER 1 Toperate — This setting specifies the required interval to overcome transient disagreement between the 52/aand 52/b auxiliary contacts during breaker operation. If transient disagreement still exists after this time has expired, theBREAKER 1 BAD STATUS FlexLogic operand is asserted from alarm or blocking purposes.BREAKER 1 EXT ALARM — This setting selects an operand, usually an external contact input, connected to a breaker alarmreporting contact.BREAKER 1 ALARM DELAY — This setting specifies the delay interval during which a disagreement of status among the three-pole position tracking operands does not declare a pole disagreement. This allows for non-simultaneous operation of thepoles.If single-pole tripping and reclosing is used, the breaker can trip unsymmetrically for faults. In this case, the minimumalarm delay setting must exceed the maximum time required for fault clearing and reclosing by a suitable margin.MANUAL CLOSE RECAL1 TIME — This setting specifies the interval required to maintain setting changes in effect after anoperator has initiated a manual close command to operate a circuit breaker.BREAKER 1 OUT OF SV — Selects an operand indicating that breaker 1 is out-of-service.
