GE Multilin N60 Network Stability and Synchrophasor Measurement System 5-1275 SETTINGS 5.5 GROUPED ELEMENTS55.5.6 SUPERVISING ELEMENTSa) OPEN POLE DETECTORPATH: SETTINGS ÖØ GROUPED ELEMENTS ÖØ SETTING GROUP 1(6) ÖØ SUPERVISING ELEMENTS ÖØ OPEN POLE DETECTORThe open pole detector is designed to detect if any pole of the associated circuit breaker is opened or the conductor is bro-ken on the protected power line and cable. The output FlexLogic™ operands can be used in three-pole and single-pole trip-ping schemes, in reclosing schemes, in blocking some elements (like CT failure), and in signaling or indication schemes. Insingle-pole tripping schemes, if OPEN POLE flag is set, any other subsequent fault should cause a three-phase trip regard-less of fault type.The open pole detector logic is built on detecting absence of current in one phase during presence of current in otherphases. Phases A, B and C breaker auxiliary contacts (if available) are used in addition to make a logic decision for single-pole tripping applications. If voltage input is available, a low voltage function is used to detect absence of the monitoringvoltage in the associated pole of the breaker.• OPEN POLE FUNCTION: This setting is used to enable/disable operation of the element.• OPEN POLE BLOCK: This setting is used to select a FlexLogic™ operand that blocks operation of the element.• OPEN POLE CURRENT SOURCE: This setting is used to select the source for the current for the element.• OPEN POLE CURRENT PICKUP: This setting is used to select the pickup value of the phase current. The pickup set-ting is the minimum of the range and likely to be somewhat above of the charging current of the line. OPEN POLE DETECTOROPEN POLE FUNCTION:DisabledRange: Disabled, EnabledMESSAGE OPEN POLE BLOCK:OffRange: FlexLogic™ operandMESSAGE OPEN POLE CURRENTSOURCE: SRC 1Range: SRC 1, SRC 2MESSAGE OPEN POLE CURRENTPKP: 0.20 puRange: 0.05 to 20.00 pu in steps of 0.01MESSAGE OPEN POLE BROKENCONDUCTOR: DisabledRange: Disabled, EnabledMESSAGE OPEN POLE VOLTAGEINPUT: DisabledRange: Disabled, EnabledMESSAGE OPEN POLE VOLTAGESOURCE: SRC 1Range: SRC 1, SRC 2MESSAGE OPEN POLE φA AUX CO:OffRange: FlexLogic™ operandMESSAGE OPEN POLE φB AUX CO:OffRange: FlexLogic™ operandMESSAGE OPEN POLE φC AUX CO:OffRange: FlexLogic™ operandMESSAGE OPEN POLE PICKUPDELAY: 0.060 sRange: 0.000 to 65.535 s in steps of 0.001MESSAGE OPEN POLE RESETDELAY: 0.100 sRange: 0.000 to 65.535 s in steps of 0.001MESSAGE OPEN POLE TARGET:Self-resetRange: Self-reset, Latched, DisabledMESSAGE OPEN POLE EVENTS:DisabledRange: Disabled, Enabled
