go to the Transformers product page Anonymous asked on Jan 25th, 2014 in Transformers

What is the relationship between voltages, currents and losses?

Max Claessens, PPTR Technology Manager

ABB's answer

Electricity is mostly consumed many kilometers from where it is generated. Because the cables used to transmit electricity are not perfect conductors, they cause losses predominately due to their resistance. As these losses are proportional to the square of the current level (loss = I²R line), reducing the current by a factor of two results in reducing the conductor resistance loss by a factor of four. Therefore, by using higher voltages (and subsequently lower currents) over long transmission distances, the increased cost of installing higher voltage systems is offset by the benefits of lower losses over the life of the transmission system.

Like this answer 2 people liked it already!


Submit comment cancel

Area expert

  • Giuseppe Petrelli

    Giuseppe Petrelli

    Global Marketing and Sales Manager


Contact ABB

If you want to purchase a product, need any pricing information or need help or support from ABB, please contact your local partner.

Haven't found what you've been looking for?

or Ask a question or Contact ABB

ABB's website uses cookies. By staying here you are agreeing to our use of cookies. Learn more