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VRLA battery technical parameters
UPS (Uninterruptible Power Supply) is able to continue to power computers and other equipment after power is cut off, because it has a device that stores electricity at work, this storage device is the UPS battery. Its main function is: When the mains is normal, the electrical energy is converted into chemical energy stored in the battery; when the mains fails, the chemical energy can be converted into electrical energy provided to the inverter or load. The merits of the UPS battery are directly related to the reliability of the entire UPS system. However, the battery is also the shortest mean time-to-failure (MTBF) in the whole UPS system. If the user can correctly use and maintain, you can extend its service life, on the contrary, its service life will be significantly shortened, the type of battery generally lead-acid batteries, lead-acid batteries and nickel-cadmium batteries and other maintenance-free batteries. VRLA battery rated capacity is 10 hours rate discharge capacity. Battery discharge current is too large, then reach the rated capacity. Therefore, should be based on equipment load, voltage and other factors to choose the right size battery. Battery capacity should be YD5040-97 "communication power equipment installation design specifications" in the provisions of the configuration, calculated as follows: Q≥KIT η [1 + α (t-25)] Where: Q --- battery capacity (Ah) ; K --- safety factor, take 1.25; I --- load current (A); T --- discharge hours (h); η --- discharge capacity factor; t --- the actual battery location where the minimum ambient temperature Value. Where the heating equipment is located, according to 15 ℃ to consider, no heating equipment, according to 5 ℃ to consider; α --- battery temperature coefficient (1 / ℃), when the discharge hour rate ≥ 10, take α = 0.006; When the discharge hour rate ≥1, take α = 0.008; when discharge hour rate <1, take α = 0.01.