an auxilliary power system is designed to supply and distribute power to the load when the primary supply is interupted. an auxilliary power system is often be a requirement to a certain industry due to the important of continous supply. Not only assosiated with a continous supply for the industry, auxilliary power system also plays important role for the safety during an emergency situations. for example, exit signs, lights, ventilation system, and fire equipments are crusial to maintain life.
Types of Auxilliary Power System
There are two types of auxilliary power system, emegency and stand-by. An emergency power systems are intended to automatically supply illumination and power to designated systems essestial for personal safety during power interuption.
According to The National Electrical Code (NEC), an emergency power must be delivered automatically within the first 10s after primary power loss. in order to ensure the availabilty of auxilliary power system, wiring of emergency circuits must be completely independent of all other wirings. wiring is not permited to utiliaze the same raceways, cables, boxes, or cabinets as normal wiring.
Stand-by systems are used to provide power aid in fire fighting, rescue operations, and control of health hazzard. Stand-by systems also provide power to critical loads that could cause damage to processes and product. Equipment required to minimize re-start time or to initiate black start-up are often supported by a stand-by system. Typical load of stand-by system are comunication systems, ventilation and smoke removal systems, sewage disposal, certain lighting and HVAC system.