GE Multilin 745 Instruction Manual

S2 System Setup745Transformer Management RelaySetpointshttp://www.GEindustrial.com/multilin5ñ32 GE MultilinWindings 1 to 3 PATH: SETPOINTS !" S2 SYSTEM SETUP !" WINDING 1(3)These setpoints describe the characteristics of each transformer winding and theCTs connected to them.The above setpoint options are also available for the second and third winding.Winding 3 setpoints are only visible if the unit has the appropriate hardware and ifthe selected TRANSFORMER TYPE is 3-winding transformer.ï WINDING 1(3) NOM Φ−Φ VOLTAGE: Enter the nominal phase-to-phasevoltage rating of Winding 1(3) of the transformer. The range for this setpoint isaffected by the S2 SYSTEM SETUP ! TRANSFORMER !" LOW VOLTAGE WINDINGRATING setting (see table below).ï WINDING 1(3) RATED LOAD: Enter the self-cooled load rating for Winding1(3) of the transformer. The range for this setpoint is affected by the S2 SYSTEMSETUP ! TRANSFORMER !" LOW VOLTAGE WINDING RATING setting (see the tablebelow).ï WINDING 1(3) PHASE CT PRIMARY: Enter the phase CT primary currentrating of the current transformers connected to Winding 1(3). The CT secondarycurrent rating must match the relay phase current input rating indicated.ï WINDING 1(3) GROUND CT PRIMARY: Enter the ground CT primary currentrating of the current transformers connected in the Winding 1(3) neutral toground path. The CT secondary current rating must match the relay groundcurrent input rating indicated. This message will only appear if the transformertype setpoint shows that Winding 1(3) is a wye-connected winding.ï WINDING 1(3) SERIES 3-Φ RESISTANCE: Enter the series three-phaseresistance of the winding (that is, the sum of the resistance of each of the threephases for the winding). This value is normally only available from thetransformer manufacturerís test report, and is used in the 745 for calculation ofharmonic derating factor.! WINDING 1 [!] WINDING 1 NOM Φ-ΦVOLTAGE: 220.0 kVRange: Dependent on LOW VOLTAGEWINDING RATING; see below.MESSAGE WINDING 1 RATEDLOAD: 100.0 MVARange: Dependent on LOW VOLTAGEWINDING RATING; see below.MESSAGE WINDING 1 PHASE CTPRIMARY: 500:5 ARange: 1 to 50000:5 A in steps of 1MESSAGE WINDING 1 GROUND CTPRIMARY: 500:5 ARange: 1 to 50000:5 A in steps of 1MESSAGE WINDING 1 SERIES 3ΦRESISTANCE: 10.700 ΩRange: 0.001 to 50.000 Ω in steps of0.001Setting (X = 1, 2, 3) Low Voltage Winding Rating Valueabove 5 kV 1 kV to 5 kV below 1 kVWINDING X NOM Φ−ΦVOLTAGE 0.1 to 2000.0 kVin steps of 0.10.01 to 200.00kV in steps of0.010.001 to 20.000kV in steps of0.001WINDING X RATED LOAD 0.1 to 2000.0MVA in steps of0.10.01 to 200.00MVA in steps of0.010.001 to 20.000MVA in steps of0.001NOTE