= 1 for single core design = 3 for three phase 3-legged core form = 5 for three phase 5-legged core form CORE = 0 by default A factor to calculate transformer reactive power loss from GIC flowing in its winding (Mvar/Ampere). KFACTOR = 0.0 by default. KFACTOR is obtained from the manufacturer of the transformer. If the manufacturer transformer KFACTOR is not available, the default KFACTOR = 0.0 is specified. If KFACTOR = 0.0, then the below KFACTORS are used by the program: For known transformer core designs the following KFACTORs are used by the REs will provide this program: value through EPPRE, KFACTOR Three Phase Shell Form 0.3300 and TSPs will provide – Single Phase (Separate Cores) 1.1800 this value through the – Three Phase 3-Legged 0.2900 workbook. – Three Phase 5-Legged 0.6600 – Three Phase 7-Legged 0.6600 – For unknown core designs: Windings Highest Voltage KFACTOR Unknown core, <= 200 kV 0.6 Unknown core, > 200 kV and <= 400 kV 0.6 Unknown core, > 400 kV 1.1 REs will provide this Winding 1 grounding dc resistance in ohms. value through EPPRE, GRDRI GRDRI = 0.0 by default (no grounding and TSPs will provide resistance). this value through the workbook. GRDRJ Winding 2 grounding dc resistance in ohms. REs will provide this
= 1 for single core design = 3 for three phase 3-legged core form = 5 for three phase 5-legged core form CORE = 0 by default KFACTOR A factor to calculate transformer reactive REs will provide this power loss from GIC flowing in its winding (Mvar/Ampere). KFACTOR = 0.0 by default. KFACTOR is obtained from the manufacturer of the transformer. If the manufacturer transformer KFACTOR is not available, the default KFACTOR = 0.0 is specified. If KFACTOR = 0.0, then the below KFACTORS are used by the program: For known transformer core designs the following KFACTORs are used by the program: value through EPPRE, Three Phase Shell Form – 0.3300 and TSPs will provide Single Phase (Separate Cores) – 1.1800 this value through the Three Phase 3-Legged – 0.2900 workbook. Three Phase 5-Legged – 0.6600 Three Phase 7-Legged – 0.6600 For unknown core designs: Windings Highest Voltage KFACTOR Unknown core, <= 200 kV 0.6 Unknown core, > 200 kV and <= 400 kV 0.6 Unknown core, > 400 kV 1.1 GRDRI Winding 1 grounding dc resistance in ohms. GRDRI = 0.0 by default (no grounding resistance). REs will provide this value through EPPRE, and TSPs will provide this value through the workbook. GRDRJ Winding 2 grounding dc resistance in ohms. REs will provide this