PHSAUTOMOTIVESALSPHSAUTOMOTIVESALS Basic Electricity Circuits Ohms Law and formulas.
Basic Formulas - elginps.com
Transcript of Basic Formulas - elginps.com
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BasicFormulasThefollowingpagesofformulas,somederivationsanddiscussionsareintendedtoassistindesigningandapplyingcapacitorbanksproperly.Also,refertoCapacitorBankInrushCalculationsforadditionalinformation.
1.Ohm’sLaw
ThiswillallowyoutodeterminethereactanceofacapacitororreactorwhenvoltageandKVARisgiven.
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Example:Athree-phase600KVARcapacitorbankat12,470willyield
Xc= = =259.168OhmsAthree-phaseshuntreactorof150KVAR,at13.8KVwillyield
Xc= = =1269.6Ohms
2.Capacitance
Example:Fromabove600KVARat12.47KVequals259.168Ohmsandfrom(12)
XC= .ThenC=
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Letf=60Hertz ThenC=0.000010235faradsor10.235microfarads.
From(16)KVAR= KVAR=600
3.Inductance
Fromabove150KVARat13.8KVequals1269.6Ohmsandfrom(17)
.Letf=60Hertz
ThenL= = =3.36773HenriesOr3367.73millihenries.
From(19)KVAR= = KVAR=150