How to can calculate voltage drop in a cable?

pveee

 Profile Answers by pveee Questions by pveee

• Dec 29th, 2011

Voltage drop in 3 phase circuits is Vd=(1.732xI(RcosФ + XsinФ)L)/(1000xno.of runs)
I is full load current,
R resistance of the conductor,
x resistance of the conductor,
L length of conductor in meters.

bijumenon

 Profile Answers by bijumenon Questions by bijumenon

• Oct 25th, 2009

According to me this is how the voltage drop in a cable is calculated.If*SQRT(Rf Cos(phi) + Xf sin(phi)) / no. of runswhere....If is the full load currentRf and Xf is the resistance and reactance of the feeder. (Rf = R *L/1000; L= length of the feeder).

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