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power stabilizer( ac regulator, avr ) Intelligent Purification Compensating AC Stabilizer Intelligent and purified non-contact compensating alternative stabilizers are new products combining the most advanced technology abroad with our national condition. It uses micro-program process, photo-electrical transmission, non-contact switch, compensated alterative stabilizing technology, and has advantages of high efficiency, energy saving, quick adjustment, no noise, no connected spot, anti-interference, auto-adjustment according to each phase, full function, high reliability, long life, free of maintenance, it's also equipped with RS-232 interface and can realize remote control and test. This series is widely used in the places requiring stable voltage such communication equipments, broadcast and TV stations, industrial production line, digitally controlled machine, textile industry, medical equipments, hotels, computer rooms, etc. Technical parameter: Specification: 3kVA-30kVA Input voltage(V) Phase voltage: 220+/-20% selective:220+/-30% 220+/-40% Output voltage(V) 220V+/-5% optional Working frequency (Hz)40-60 Efficiency ≥98% Constant voltage precision(+/-1-5% ) optional Time for response≤0.04s Insulated resistance(MΩ)≥2 Insulated strength:2000V/ 1min does not have the puncture Wave filtering performance: Frequency: 0.1MHz-10GHz, Insertion loss: different mode 70-100dB common mode 100dB (optional) Anti-surge performancePeak depression: Input 4000V Pulse width 2μs output<20V Input 4000V Pulse width 0.5μs output<2V(alternative) Waveform distortion≤0.01%(additional