CHAPTER 5: SETTINGS GROUPED ELEMENTSD60 LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL 5-2735There are three phase overvoltage elements available. A phase overvoltage element is used as an instantaneous elementwith no intentional time delay or as a definite time element. The input voltage is the phase-to-phase voltage, eithermeasured directly from delta-connected VTs or as calculated from phase-to-ground (wye) connected VTs. The figureshows specific voltages to be used for each phase.Figure 5-154: Phase overvoltage logic5.7.13.4 Neutral overvoltage (ANSI 59N, IEC PTOV)SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) VOLTAGE ELEMENTS NEUTRAL OV1(3) PHASE OV1EVENTS: DisabledRange: Disabled, EnabledIf the source VT is wye-connected, then the phase overvoltage pickup condition is V > x Pickup for VAB , V BC , andVCA . NEUTRAL OV1 NEUTRAL OV1FUNCTION: DisabledRange: Disabled, Enabled NEUTRAL OV1 SIGNALSOURCE: SRC 1Range: SRC 1, SRC 2, SRC 3, SRC 4 NEUTRAL OV1 PICKUP:0.300 puRange: 0.004 to 3.000 pu in steps of 0.001 NEUTRAL OV1 CURVE:Definite TimeRange: Definite Time, FlexCurve A, FlexCurve B,FlexCurve C NEUTRAL OV1 PICKUP:DELAY: 1.00 sRange: 0.00 to 600.00 s in steps of 0.01 NEUTRAL OV1 RESET:DELAY: 1.00 sRange: 0.00 to 600.00 s in steps of 0.01 NEUTRAL OV1 BLOCK:OffRange: FlexLogic operand NEUTRAL OV1 TARGET:Self-resetRange: Self-reset, Latched, Disabled NEUTRAL OV1 EVENTS:DisabledRange: Disabled, Enabled
