Feeder Voltage Drop Calculator

Formula

The formula to calculate the Feeder Voltage Drop (Vd) is:

\[ V_d = 2 \cdot L \cdot I \cdot (R + X) \]

Where:

\(V_d\) is the feeder voltage drop (V)
\(L\) is the length of the feeder (meters)
\(I\) is the current (amperes)
\(R\) is the resistance per unit length (ohms/meter)
\(X\) is the reactance per unit length (ohms/meter)

Feeder Voltage Drop Definition

A feeder voltage drop refers to the reduction in voltage that occurs as electric current flows through a feeder, which is a type of electrical conductor used to transmit power from a source to a load. This drop in voltage is caused by the resistance and reactance of the feeder material, which impedes the flow of current. The voltage drop can affect the performance of electrical equipment and systems, making it important to calculate and minimize it in electrical design and installation.

Example Calculation

Let's assume the following values:

Length of Feeder (L) = 100 meters
Current (I) = 50 amperes
Resistance per Unit Length (R) = 0.05 ohms/meter
Reactance per Unit Length (X) = 0.02 ohms/meter

Using the formula:

\[ V_d = 2 \cdot 100 \cdot 50 \cdot (0.05 + 0.02) = 2 \cdot 100 \cdot 50 \cdot 0.07 = 700 \text{ V} \]

The Feeder Voltage Drop (Vd) is 700 V.