A CONTROL SYSTEM OF VALVES FOR TRANSFORMER COOLING BY USING RELAY SYSTEM

摘要

A control system of valves for transformer cooling by using relay system, said system comprising: pumping cooling oil; valves to control cooling oil flow; relays to actuate said valves; monitoring valve position; oil flow monitoring means; energizing means to enerzise said relays if oil flow is not established as said pumps as monitored by said oil flow monitoring means.