Industrial Transformers

This higher current affects the electrical motors (particularly smaller capacity motors upto 7.5 H.P.) in three ways: 1. Higher current produces higher losses in electrical motors which causes premature failure of winding. 2. These higher losses of electric motors also increase the losses of cables, switches, transformers & other associated equipment. 3. For smooth continuous operation of motors, over load relays are usually set at 20% higher setting.