Our technological world has become deeply dependent upon the continuous availability of electrical power. In most countries, commercial power is made available via nationwide grids, interconnecting numerous generating stations with the loads. The grid must supply the basic needs of residential, lighting, heating, refrigeration, air conditioning, and transportation as well as a critical supply to governmental, industrial, financial, commercial, medical and communications communities.
Many power problems happen in the commercial power grid, which, with its thousands of miles of transmission lines, is subject to weather conditions such as lightning storms and flooding along with equipment failure, traffic accidents and major switching operations. Also, power problems that are affecting today’s technological equipment are often generated locally within a facility from any number of situations, such as local construction, heavy start up loads, faulty distribution components, and even typical background electrical noise. An uninterruptible power supply (UPS), which are designed for Home & Residential environments, helps to improve the manageability, availability and performance of sensitive electronic, network, communications and industrial equipment of all sizes. It also protects home communication devices and PCs against damage and file destruction from unexpected power grid changes.
Source: APC website