... ] PC-SVC-500VA 220V AC AVR Automatic Vltage Stabilizer Regulators Regulation With Servo Motor For Home Appliance Application:This ... High efficiency : ≥ 90%4. Protection against over voltage , low voltage , overload , over temperature protection , delay time protection5. ... ,Time delay,Normal Working,Protection Protection Over voltage,Low voltage,Overload,Over temperature,Delay time Input voltage ...