In addition to driving the tap-changer, ETOS ED lets you evaluate and record all of the relevant operating data from your power transformer, such as monitoring the tap changer or evaluating transformer utilization. ETOS ED helps with focused planning of operation and maintenance. The solid, proven housing protects both the motor-drive unit and the integrated monitoring system. Optional automation solutions such as voltage regulation and cooling system control can also be included in the ETOS ED order and used as supplementary equipment for controlling the transformer.