2.Second-Highest Level is the emergency electrical system in order to prevent damage to the infrastructure of the industry, such as the primary storage system and the storage centre of the Bank. Electrical system of the emergency room at the hospital, etc.3.Third-Highest Level is an emergency power system to prevent the economic loss due to any interruption of the production process, such as the production of electronic circuit components. Food production, chemical production, oil refining, etc.4.Lowest Level is an emergency power system to prevent overheating causing the work process interruption, machinery or equipment in the production process is corrupted, such as a cooling system, lubrication system, etc.Use a UPS backup power systems.The backup power system for the automatic control system and computer systems, communications systems, data management is critical because of the interruption of the functioning of these systems, even temporarily, could cause a lot of damage, so UPS was used as a backup system for this kind of work without a major role in the UPS will have to solve the problem of multiple categories, the voltage is.Power outage (Outage) problem-which is the basic problem of electrical systems and emergency--The problem of low-voltage reduction (Brownout), which is a problem caused by too much electrical power to support, or it may occur in case the power Voltage Drop has occurred so far in the electric power transmission.-Excess-voltage problem (Overvoltage), the problems that arise in the case of very close to power and electricity have a higher voltage level to be able to have power over there, or it may occur because of an error on our system functioning to control the voltage of the generator.-Issue voltage (Voltage Surge/Spike), soet, which is the problem of switching and lightning cause increased voltage level is very high and the agreement quickly.-Problems with interference (Noise) that allows the system to send the data signal in a communication system and a control system error occurred. UPS is generally divided into two categories:
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