GE D30 Instruction Manual

Also see for D30 series: Communications manual Communications guide Instruction manual Instruction manual Instruction manual

Contents

5-156 D30 Line Distance Relay GE Multilin5.6 CONTROL ELEMENTS 5 SETTINGS5None: Dead Source function is disabledLV1 and DV2: Live V1 and Dead V2DV1 and LV2: Dead V1 and Live V2DV1 or DV2: Dead V1 or Dead V2DV1 Xor DV2: Dead V1 exclusive-or Dead V2 (one source is Dead and the other is Live)DV1 and DV2: Dead V1 and Dead V2• SYNCHK1 DEAD V1 MAX VOLT: This setting establishes a maximum voltage magnitude for V1 in 1 ‘pu’. Below thismagnitude, the V1 voltage input used for synchrocheck will be considered “Dead” or de-energized.• SYNCHK1 DEAD V2 MAX VOLT: This setting establishes a maximum voltage magnitude for V2 in ‘pu’. Below thismagnitude, the V2 voltage input used for synchrocheck will be considered “Dead” or de-energized.• SYNCHK1 LIVE V1 MIN VOLT: This setting establishes a minimum voltage magnitude for V1 in ‘pu’. Above this mag-nitude, the V1 voltage input used for synchrocheck will be considered “Live” or energized.• SYNCHK1 LIVE V2 MIN VOLT: This setting establishes a minimum voltage magnitude for V2 in ‘pu’. Above this mag-nitude, the V2 voltage input used for synchrocheck will be considered “Live” or energized.NOTES ON THE SYNCHROCHECK FUNCTION:1. The selected sources for synchrocheck inputs V1 and V2 (which must not be the same source) may include both athree-phase and an auxiliary voltage. The relay will automatically select the specific voltages to be used by the synch-rocheck element in accordance with the following table.The voltages V1 and V2 will be matched automatically so that the corresponding voltages from the two sources will beused to measure conditions. A phase to phase voltage will be used if available in both sources; if one or both of theSources have only an auxiliary voltage, this voltage will be used. For example, if an auxiliary voltage is programmed toVAG, the synchrocheck element will automatically select VAG from the other source. If the comparison is required on aspecific voltage, the user can externally connect that specific voltage to auxiliary voltage terminals and then use this"Auxiliary Voltage" to check the synchronism conditions.If using a single CT/VT module with both phase voltages and an auxiliary voltage, ensure that only the auxiliary voltageis programmed in one of the sources to be used for synchrocheck.Exception: Synchronism cannot be checked between Delta connected phase VTs and a Wye con-nected auxiliary voltage.2. The relay measures frequency and Volts/Hz from an input on a given source with priorities as established by the con-figuration of input channels to the source. The relay will use the phase channel of a three-phase set of voltages if pro-grammed as part of that source. The relay will use the auxiliary voltage channel only if that channel is programmed aspart of the Source and a three-phase set is not.NO. V1 OR V2(SOURCE Y)V2 OR V1(SOURCE Z)AUTO-SELECTEDCOMBINATIONAUTO-SELECTED VOLTAGESOURCE Y SOURCE Z1 Phase VTs andAuxiliary VTPhase VTs andAuxiliary VTPhase Phase VAB2 Phase VTs andAuxiliary VTPhase VT Phase Phase VAB3 Phase VT Phase VT Phase Phase VAB4 Phase VT andAuxiliary VTAuxiliary VT Phase Auxiliary V auxiliary(as set for Source z)5 Auxiliary VT Auxiliary VT Auxiliary Auxiliary V auxiliary(as set for selected sources)NOTE