Transcription of Short-Circuit Current Calculations - Electrical Sector
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Short-Circuit Current Calculations - Electrical Sector
237 2014 EatonShort- circuit Current CalculationsBasic Point-to-Point calculation ProcedureStep 1. Determine the transformer full load amps ( ) fromMultiplier = 100*% Ztransformer3 Faultsf = xL xI3 C x n x EL-L1 Line-to-Line (L-L) Faults 2 xL xIL-LSee Note 5 & Table 3f =C x nxEL-L1 Line-to-Neutral (L-N) Faults2 xL xIL-N See Note 5 & Table 3f =C x n xEL-NWhere:L=length (feet) of conductor to the from Table 4 of C values for conductors andTable 5 of C values for busway. n=Number of conductors per phase (adjusts C value forparallel runs)I=Available Short-Circuit Current in amperes at beginningof of primaryM =11 + sym.
©2014Eaton 237 Short-Circuit Current Calculations Basic Point-to-Point Calculation Procedure Step 1. Determine the transformer full load amps (F.L.A.) from
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Short Circuit, Calculations, ELECTRICAL, Electrical Circuit Calculations, Electrical Calculations Workbook, Circuit, Calculations are Essential for Critical, ELECTRICAL CIRCUITS Electrical Circuits, Electrical Circuits, Basic electrical engineering, Chapter, Motor Calculations Refer to pg. 49, ATech Training, Inc