Düzeltme Faktörleri 8

183 U Gerilim / Rated voltage,I Akým / CurrentR Direnç / ResistanceW Enerji (Isý) / Energy (heat),t zaman / time  in secondsl kablonun uzunluðu / length of cable (m)u gerilim düþümü (V) / Voltage drop in Vfrom sending to receiving end of line    geçirgenlik / Conductivity(Bakýr için 58 / for copper 58)S iletken kesidi / rated cross - section (mm2)Cos     Güç faktörü / Power factorP Güç watt olarak / Power in watts (W)   Verim / Efficiency Ohm kanunu / Ohms low: U = I x R Enerji (ýsý) Energy (heat): W = I 2  x R x t Hattýn direnci / Resistance of a line:(Besleme ve dönüþ) / (Feed and return) R = 2 x l   . S Güç (DC) / DC Power : P = U x I Tek fazlý sis. güç / Single-Phase Power : P=U.I.cos Üç fazlý sis. güç / Three-Phase Power : P=1,73.U.I.cos Verim / Efficiency :   = P output P input Gerilim düþümleriVoltage drop Akým belli iseIf current is known Güç belli iseIf power is known Ýletken kesidi Conductor cross-section Akým belli iseIf current is known Güç belli iseIf power is known Uzunluk / Length 1 m 1 in 1 ft 1 yd 1 mile 1,0 0,02540,30480,9144 1609,344 39,37 1,0 12,0036,00 63360,0 3,28 0,0833 1,03,0 5280,0 1,09360,0277 0,333 1,0 1760,0 0,621371 x 10 -3 0,0158 x 10 -3 0,189 x 10 -3 0,568 x 10 -3 1,0 x 10 -3 Alan /Area 1 m 2 1 inç 2 1 ft 2 m 2 1,0 0,64516 x 10 -3 0,0929  inç 2 1550,0 1,0 144,0 ft 2 10,7639 6,944 x 10 -3 1,0 metre / meters m inç / inches in feet / feet ft yarda /yards yd mil /miles mil Tablo 15 / Table 15 Formüller - Dönüþtürme Faktörleri / Formulas - Conversion Factors  u = 2 x I x l x S Tek fazlý A.C. ve D.C. sistemlerdeIn single-phase A.C. and D.C. systems Üç fazlý A.C. ve D.C. sistemlerdeIn three-phase A.C. and  D.C. systems (V)  u = 2 x l x P x S x U (V)  u = 1,73 x I x l x Cos x S (V)  u = l x P x S x U (V) S = 2 x I x l x u (mm 2 ) S = 2 x l x P x u x U 2 (mm 2 ) S = 1,73 x I x l x Cos x U (mm 2 ) S = (mm 2 ) l x P x u x U 2