A Vintech 20 kVA single-phase SVC (Servo Voltage Controller) voltage stabilizer has an apparent power rating of 20 kVA and a wattage rating of 20,000 watts. The "kVA" (kilovolt-ampere) rating represents the apparent power, while the "wattage" (or kilowatts) refers to the real power that the stabilizer can deliver. In essence, a 20 kVA stabilizer can handle a load that requires up to 20,000 volt-amperes of power.