5-132 B30 Bus Differential System GE Multilin5.6 GROUPED ELEMENTS 5 SETTINGS5Figure 5–52: PHASE INSTANTANEOUS OVERCURRENT 1 SCHEME LOGIC5.6.5 NEUTRAL CURRENTa) NEUTRAL TIME OVERCURRENT (ANSI 51N, IEC PTOC)PATH: SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) NEUTRAL CURRENT NEUTRAL TOC1The neutral time overcurrent element can provide a desired time-delay operating characteristic versus the applied currentor be used as a simple definite time element. The neutral current input value is a quantity calculated as 3Io from the phasecurrents and may be programmed as fundamental phasor magnitude or total waveform RMS magnitude as required by theapplication. NEUTRAL TOC1NEUTRAL TOC1FUNCTION: DisabledRange: Disabled, EnabledMESSAGE NEUTRAL TOC1 SIGNALSOURCE: SRC 1Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6MESSAGE NEUTRAL TOC1INPUT: PhasorRange: Phasor, RMSMESSAGE NEUTRAL TOC1PICKUP: 1.000 puRange: 0.000 to 30.000 pu in steps of 0.001MESSAGE NEUTRAL TOC1CURVE: IEEE Mod InvRange: See OVERCURRENT CURVE TYPES tableMESSAGE NEUTRAL TOC1TD MULTIPLIER: 1.00Range: 0.00 to 600.00 in steps of 0.01MESSAGE NEUTRAL TOC1RESET: InstantaneousRange: Instantaneous, TimedMESSAGE NEUTRAL TOC1 BLOCK:OffRange: FlexLogic operandMESSAGE NEUTRAL TOC1TARGET: Self-resetRange: Self-reset, Latched, DisabledMESSAGE NEUTRAL TOC1EVENTS: DisabledRange: Disabled, EnabledIA ≥ PICKUPSETTINGPHASE IOC1FUNCTION:Enabled = 1Disabled = 0SETTINGPHASE IOC1SOURCE:IAIBICPHASE IOC1BLOCK-A:Off = 0SETTINGSETTINGIB ≥ PICKUPRUNPHASE IOC1PICKUP:RUNIC ≥ PICKUPRUNPHASE IOC1PICKUPDELAY:SETTINGSPHASE IOC1 RESETDELAY:tPKPtRSTtPKPtRSTtPKPtRST827033A6.VSDFLEXLOGICOPERANDSPHASE IOC1 B PKPPHASE IOC1 B DPOPHASE IOC1 PKPPHASE IOC1 C PKPPHASE IOC1 C DPOPHASE IOC1 A OPPHASE IOC1 B OPPHASE IOC1 OPORANDORANDANDPHASE IOC1 A DPOPHASE IOC1 A PKPPHASE IOC1 C OPPHASE IOC1BLOCK-B:Off = 0SETTINGPHASE IOC1BLOCK-C:Off = 0SETTINGPHASE IOC1 DPOAND
