5-144 G60 Generator Management Relay GE Multilin5.5 GROUPED ELEMENTS 5 SETTINGS55.5.13 LOSS OF EXCITATIONPATH: SETTINGS ÖØ GROUPED ELEMENTS Ö SETTING GROUP 1(6) ÖØ LOSS OF EXCITATIONThe operating characteristic is shaped out of two offset mho circles shifted down along the imaginary axis as shown below.Figure 5–85: LOSS OF EXCITATION OPERATING CHARACTERISTICS LOSS OF EXCITATIONLOSS OF EXCITATIONFUNCTION: DisabledRange: Disabled, EnabledMESSAGE LOSS OF EXCITATIONSOURCE: SRC 1Range: SRC 1, SRC 2, SRC 3, SRC 4MESSAGE LOSS OF EXCITATIONCENTER 1: 10.00 ohmRange: 0.10 to 300.00 ohms in steps of 0.01MESSAGE LOSS OF EXCITATIONRADIUS 1: 8.00 ohmRange: 0.10 to 300.00 ohms in steps of 0.01MESSAGE EXCITATION V SUPV 1:EnabledRange: Disabled, EnabledMESSAGE LOSS OF EXCITATIONPKP DELAY1: 0.050 sRange: 0.000 to 65.535 s in steps of 0.01MESSAGE LOSS OF EXCITATIONCENTER 2: 12.00 ohmRange: 0.10 to 300.00 ohms in steps of 0.01MESSAGE LOSS OF EXCITATIONRADIUS 2: 10.00 ohmRange: 0.10 to 300.00 ohms in steps of 0.01MESSAGE LOSS OF EXCITATIONV SUPV 2: EnabledRange: Disabled, EnabledMESSAGE LOSS OF EXCITATIONPKP DELAY2: 0.500 sRange: 0.000 to 65.535 s in steps of 0.01MESSAGE LOSS OF EXCITATIONUV SUPV: 0.700 puRange: 0.000 to 1.250 pu in steps of 0.001MESSAGE LOSS OF EXCIT BLK:OffRange: FlexLogic™ operandMESSAGE LOSS OF EXCITATIONTARGET: Self-resetRange: Self-reset, Latched, DisabledMESSAGE LOSS OF EXCITATIONEVENTS: DisabledRange: Disabled, Enabled830711A1.CDRC1ZbXdRC1R1C2R2ZbX’dXd= Center of element 1 = (Zb + X’d) / 2= Radius of element 1 = Zb / 2= Center of element 2 = (Xd + X’d) / 2= Radius of element 2 = Xd / 2= Base impedance of the machine= Transient reactance of the machine= Synchronous reactance of the machineXX’d2R1R2C2
