Basic Electrical Calculations

 Calculating DG Set current Calculation of DG set current while knowing KVA Rating -  Formula -  Power (KW) = 1.73 x V x I x Power Factor (PF) Example -  DG set of 1010 KVA with a power factor - 0.8 & Voltage 415 V                   So, To calculate the DG set current first we have to calculate the power                   P.F. = KW/KVA                   KW = KVA x P.F.                      KW = 1010 x 0.8                   KW = 808 Hence,                Power (KW) = 1.73 x V x I x Power Factor (PF)                       808 x 1000 = 1.73 x 415 x I x 0.8                         I =...

                                              BASIC  ELECTRICAL  CALCULATIONS The purpose of this document is to provide information, formulas and documentation to take certain electrical values and convert them into other electrical values. The formulas below are known and used universally. . To Find Watts  To Find Volt-Amperes  To Find Kilovolt-Amperes  1.To Find Watts -  When Volts and Amperes are Known  POWER (WATTS) = VOLTS x AMPERES  We have a small server with a nameplate shows 2.5 amps. Given a normal 120 Volt, 60 hz power source and the ampere reading from equipment, make the following calculation: POWER (WATTS) = 120 * 2.5 ANSWER: 300 WATTS 2.To Find Volt-Amperes (VA)   Same as above. VOLT-AMPERES (VA) = VOLTS x AMPERES ANS: 300 VA 3.To Find kilovolt-Amperes (kVA)   A) SINGLE PHASE   KILOVOLT-AMPERES (k...