Accurate medium voltage sizing tool. Design electrical systems safely now.
Proper engineering of medium voltage distribution infrastructure requires precise computation of conductor sizing to handle continuous ampacity loads while preventing excessive voltage drop over long linear runs. Unlike low voltage circuits, medium voltage applications typically operate from 2kV up to 35kV, introducing important electrical considerations like dielectric insulation stress, skin effect, and electromagnetic induction properties across metallic conduits or earth paths.
The calculations rely on standard electrical engineering principles. The full load current for a balanced three-phase medium voltage system is computed using the active power demand, operating line-to-line voltage, and power factor parameters:
$$I = \frac{P}{\sqrt{3} \times V_{L-L} \times PF}$$
Where $I$ is current in amperes, $P$ is total real power in watts, $V_{L-L}$ is line-to-line voltage, and $PF$ represents the system power factor. Voltage drop is subsequently evaluated by factoring conductor alternating current resistance and inductive reactance values per unit length.
Using this utility is straightforward. First, input your accurate baseline system voltage, operational frequency, and phase configuration parameters into the initial column. Next, navigate to the second column to enter your target active power load, lagging power factor ratio, and total circuit run distance metrics. Finally, define your physical environmental constraints including conductor material composition, insulation rating, and conduit placement methods. Click the submit button to analyze instant outcomes.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.