Emergency Power Supply (EPS) is today the important buildings in order to power protection and fire safety and the use of an emergency power supply device. Widely used in building the electrical field and special occasions, emergency power, its principle is: in the normal AC power from the AC power to the unit after each vote is important load when the AC power grid, each switch device will immediately switching to the emergency power supply, when the grid voltage is restored, the emergency power supply will be restored to the power grid, effectively prevent disasters personal injury and property damage. Emergency Power Supply Features: ● Inverter unit with microprocessor controlled SPWM technology, pure sine wave output, waveform pure ● unique dynamic current-loop control technology to ensure reliable operation of the inverter ● Load adaptable, including capacitive, inductive, mixed loads ● overload and impact resistance, able to withstand full load power ● has input over voltage, output over voltage, over temperature, overload, short circuit protection features such as sound ● High efficiency (non- emergency power supply, almost no power), low noise, no smoke, no fire hidden danger ● Automatic load switching, enabling unattended ● stable, secure, reliable, long life main technical parameters Model ATE-20KW DC input rated Number of batteries voltage 480VDC 12V × 40 maintenance-free lead-acid battery cell type Three-phase AC input frequency 50Hz ± 5% voltage range 380VAC ± 20% rated power 20KW inverter output voltage accuracy of the rated voltage 380VAC 380VAC ± 3% Frequency 50Hz ± 1% Waveform distortion rate ≤ 5% (linear load) Dynamic response 5% (0% to 100% load) crest factor (CF) 3:1 Inverter efficiency 87% alarm LED alarm and LCD display charging voltage alarm text 542V Charging current 5A Noise ≤ 55db Dielectric strength 1500 VAC, 1min (input and output) Forced air cooling fan