Problem 73-6  Source:   Problem developed by the author of the site.

Considering the results of the previous problem (Problem 73-5), let's assume that this cable is used to transport electrical energy between two locations that are 100 Km apart. If the line cannot have a loss greater than 4% , what the line's rated power and line working voltage should be?

Solution of the Problem 73-6   

We will calculate the totaç loss for a line 100 Km long, knowing that we have a loss of 45 800 W/Km. Like this:

If the line loss should not be greater than 4%, then the nominal line power is:

This value found is the minimum value of the nominal power of the line. To determine the nominal voltage, we use eq. 07-01, or