Emergency Power System (EPS) 101

Emergency power system

A backup generator for a large apartment building
Emergency power systems are a type of system, which may include lighting, generators and other apparatus, to provide backup resources in a crisis or when regular systems fail.

They find uses in a wide variety of settings from residential homes to hospitals, scientific laboratories, data centers[1], telecommunication[2] equipment and modern naval ships.

Emergency power systems can rely on generators, deep cycle batteries, flywheel energy storage or hydrogen fuel cells[3] [4]. Finally, some homebrew emergency power systems use regular lead-acid car batteries, but these do not make a very efficient or reliable system.[5]

Source: Wikipedia

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