Functional Features：

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The fire power supply is specifically designed for use in fire alarm controllers, linkage control equipment, fire extinguishing control cabinets, broadcast communication cabinets, and telephone communication cabinets. Stable and reliable DC voltage and current output. It has management functions for charging and discharging battery packs. Meet the requirements of experiments such as lightning surge, electrostatic discharge, electrical transient fast pulse group interference, conducted disturbance, AC power cycle drop, and instantaneous power failure; Good weather resistance and insulation safety, meeting the requirements of insulation withstand voltage and wet heat tests; Long term overcurrent and short-circuit protection function, capable of self recovery; Complete battery charging and discharging management, constant current and constant voltage two-stage charging method, backup power over discharge cut-off protection

Technical Parameter：

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AC input voltage: AC187V-242V, 47-63HZ
Output 1 and 2 voltage: 27V ± 1V
Output current: 10A
Output mainstream voltage ripple noise: Ripple ≤ 1% Noise ≤ 2%
Insulation resistance (15-35 ℃, 45% -75% RH): Input casing>50M Ω; Output casing>20M Ω
Voltage resistance strength (15-35 ℃, 45% -75% RH): Input chassis AC1500V, frequency 50HZ, time 1 minute (leakage current ≤ 5mA)
Output - chassis AC500V, frequency 50HZ, time 1 minute (leakage current ≤ 10mA)
Charging method: constant current voltage limiting, average charging current of 1A to 2A, floating charging voltage of 28V ± 0.5V

Usage environment：

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Environmental temperature: -10 ℃ -42 ℃,
Relative humidity: ≤ 95% RH (40 ℃)