as far as I know Voltage drop can not be divided into 2 component as reactive and resistive but current can be divided as such,
as far as I know Voltage drop can not be divided into 2 component as reactive and resistive but current can be divided as such,
For a typcial premises wiring system, I have never seen a need or purpose for analyizing voltage drop beyond the basic I x R calculation. Even for the most stringent LEED / IECC energy uses forumals, just a simple 2% / 3% allowance is given. No other considerations needed.
Perhaps this is some type of need for an extremely rigorous power quality installation or purpose just an academic matter?
Dear jghrist, If you make a simple calculation you will see that Vdr and Vdx are not simply multiplication of active current and resistance & reactive current and reactance respectively, Vdr for example is equal to the sum of Ia x R +Ir x X that is not only Ia x R am I right?
It seems to me reactive voltage drop is a consideration any time power factor is.
I think so. Reactive current must be carried, and sized for, which is why proper, and properly-placed correction can reduce the installed cost of an installation. I think ...Not really, Reactive Voltage Drop is a consideration anytime it can substantially contribute to the voltage drop in the line. Are we saying the same thing?
Agreed. Both contribute to voltage drop, conductor heating, etc.The voltage drop in the line is dependant on what the line impedance is, predominantly resistance, reacatance, or both.
The Vd components are not proportional to the resistantance and reactance because the resistive component is factored by the power factor (cosθ) while reactance component is factored by its trigonometric compliment, i.e. sinθ.so I am asking if we can say looking at these magnitudes anything about resistance and reactance? it is certain that these two component (of voltage drop lengthwise and widthwise) are not proportional with reactance and resistence separately, but maybe these two component of voltage drop have a meaning I dont know..