Detailed Emergency Ballast Description:
YH-40R can supply power to emergency equipments such as emergency lights and exit signs, When there is a power supply failure, YH-40R must be used together with a normal fluorescent lamp. After YH-40R installed, the fluorescent lamp can be operated as a normal lamp. When normal power supply fails, YH-40R would supply power to the fluorescent lamp immediately no matter the switch is on or off. houseing: Carbon steel. Light source: Fluorescent lamp(=<40W). Power supply: AC220V ± 10% 50HZ ± 10%. Emergency time: >=90minutes. Operating environment: -10℃ to +50℃. Batteries: Maintenance-free, sealed Ni-Cad chargeable battery group. Solid-state charger: The features of battery charging are timing, temperature compensation and constant current. Self testing: In the situations of blowout or bad connection, battery open circuit or short circuit, the yellow indicator shines. Over discharge protection: When the voltage of the batteries decreases to 80% of rated voltage, electric switch shall cut the discharging circuit automatically to protect the batteries.
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