DESCRIPTION: The Parus-21 is a three-phase voltage stabilizer for an apartment or home with a maximum power of 7 kW per phase. It belongs to the Volter Parus series and is designed to provide stabilized voltage to all types of electrical consumers when powered from a grid with unsatisfactory voltage quality. This is a double-conversion device without energy storage. Advantages: Low noiseIncreased noise immunityHigh speedCan be used at sub-zero temperatures and high humidityIncreased fire safetyMaximum number of protectionsConvenient connectionDoes not distort the sine waveResistance to mechanical stress Characteristics: Type - inverterPhase - three phasesEfficiency, % - 98Input range - 130-330 V (per phase)Response time, ms - 1Noise level, dB - 34-40, depending on the loadMaximum current, A - 32Maximum power, kW - 21Cooling - forcedMounting method - surface-mountedOutput voltage - 220 V (per phase)Max. Power at Umin, kW - 12.3 Stabilization accuracy - ±0.5% Number of stages - stepless Stabilization step - – Switching off at Umin - 105 V (per phase) Switching off at Umax - 330 V (per phase) Switching off in transit - 260±5 V Switch-on delay - 4.5-7.5 s Dimensions (H x W x D), mm - (630 x 430 x 140)*3 Weight, kg - 19.5*3 Protection class - IP20 Color - light gray Humidity, no more than - 40…80% Temperature range - Operating range from plus 1°С to 40°С indoors