The value of k=0.92 is recommended in generator applications as the trip delay isnormally quite long.The calibration factors for current and voltage measurement errors are set % of ratedcurrent/voltage:IMagComp5, IMagComp30, IMagComp100VMagComp5, VMagComp30, VMagComp100IMagComp5, IMagComp30, IMagComp100The angle compensation is given as difference between current and voltage angleerrors.The values are given for operating points 5, 30 and 100% of rated current/voltage. Thevalues should be available from instrument transformer test protocols.7.9 Directional overpower protection GOPPDOP (32)SEMOD172360-1 v47.9.1 IdentificationSEMOD176574-2 v4Function description IEC 61850identificationIEC 60617identificationANSI/IEEE C37.2device numberDirectional overpower protection GOPPDOPP >2DOCUMENT172362-IMG158942V2 EN-US327.9.2 Application SEMOD172358-4 v2The task of a generator in a power plant is to convert mechanical energy available as atorque on a rotating shaft to electric energy.Sometimes, the mechanical power from a prime mover may decrease so much that itdoes not cover bearing losses and ventilation losses. Then, the synchronous generatorbecomes a synchronous motor and starts to take electric power from the rest of thepower system. This operating state, where individual synchronous machines operate asmotors, implies no risk for the machine itself. If the generator under consideration isvery large and if it consumes lots of electric power, it may be desirable to disconnect itto ease the task for the rest of the power system.Section 7 1MRK 505 370-UUS ACurrent protection228 Busbar protection REB670 2.2 ANSIApplication manual
