High-voltage power distribution

General acceptance of load center power distribution for 480-volt and 600-volt loads, and the trend toward higher voltages for large motors have increased greatly the importance of high-voltage distribution systems. Paper mills frequently have a large portion of the total load in large motors operating at the high-voltage level, and therefore the fundamental considerations of the high-voltage systems are more complex than in many industrial establishments where all loads are at the 600-volt level.