Why Are High-power, Wide-range Voltage Regulators Typically Rated Above 10kva?

For voltage regulators with a rated capacity below 10kVA, the range of input voltage variations they can withstand is relatively limited, making this design more suitable for small loads or single-phase applications. High-power devices, however, experience greater voltage fluctuations when facing complex power grid fluctuations, thus increasing the demands on the voltage regulation system. In the mainstream voltage regulator product line, wide range stabilizer for ac devices typically start at 10kVA to meet the higher power requirements of three-phase systems and handle more significant input fluctuations.