Ronk’s new POWRSOFT® CONTROLLER is engi-

neered to soft start the entire line of Ronk Rotary

Phase Converters. By reducing the normal starting

inrush on the single phase line by up to 50%, larger

rotary converters may be used on utility single

phase lines for irrigarion system and other loads

when three phase in not available. These new units

can also be retrofitted into an existing Ronk

Converter installation.

The POWRSOFT® unit produces no harmonics

on the single phase lines during running conditions.

These units are Nema 3R-outdoor-corrosion

resistant aluminum construction. Built with heavy

duty components incorporating short circuit

and overload protection they insure years of

trouble free operation. The Ronk units are

available in 2-150 KVA ratings for both 240

and 480 volt installations.