The Proven is a Proven Series Servo controlled stabilizer, that redefines the price performance ratio. Based on programmed logic circuit (PLC) technology. Servotech offers a whole new range of features. » Servotech Servo stabilizer provides perfectly stable output under severe conditions of unbalanced voltage/current, because of its unique conditions single phase or three phase, distortion less solid state motorizes voltage controller conserves variable energy. » No effect by any transient over voltage surge with fast correction speed (20V-55V per second) » Higher Power at lower cost: rating of 10KVA-1000KVA » Output voltage adjustable (110V output can also be provided) » No effect on load power factor & overall efficiency above 96% » Increased life of your equipment reduced heating and minimal losses. » Optional features include surge suppression, Hi/Low voltage cut off, overload protection, single-phase prevention and bypass mechanism. » Testing is computerized there by ensuring higher reliability.