3000 VA Single Phase Automatic Voltage Stabilizer from ATO has an input voltage range of 140V to 260V, which means if the input voltage is between 140V to 260V, it will stabilize it to regular voltage of about 220V-230V. If the voltage is below 140V or higher than 260V, it will just cut off the applicance from mains.

Specifications

Tips: How to select a household voltage stabilizer

1. AC stabilized voltage supply takes the output apparent power (kVA) as its nominal rated capacity. But in general, the loads are not pure resistors, namely the power factor COS￠≠1, so the active power (kW) actually output by the voltage stabilizer is equal to the capacity (kVA)*COS￠.
2. In actual selection, the stabilized voltage supply shall be reasonably selected according to specific conditions of the power consumption equipment, such as its rated power, power factor and load types. A proper allowance shall be kept for the output power, particularly, the allowance shall be larger for the selection of an impulse load.
3. Pure resistive load devices, such as filament lamps, resistance wires, electric furnaces, shall select a total power equal to 1.25~1.5 times of load power.
4. Inductive and capacitive load equipment, such as the fluorescent lamps, fans, motors, pumps, air conditioners, computers and refrigerators, shall select a total power equal to or higher than 2~3 times of load power.
5. For large inductive and capacitive load equipment (such as motor, computer), starting current is quite large (5~8 times of the rated current), so the capacity of voltage stabilizer shall be 2.5~3 times of the load power.
   For example, two three-phase motors (one is 2.2kW, another is 5.5 kW), when selecting a voltage stabilizer, the capacity shall not be lower than (2.2kW+5.5 kW)*2.5=19.25 kVA, namely a three-phase voltage stabilizer above 20 kVA shall be selected at least.