08-01-2014, 06:15 AM
UPS at Metro Stations
(a)UPS systems of proven technology shall be provided at all Stations, and the Depot to supply systems that require high security of supply. Separate UPS systems of adequate capacity shall be provided for various loads.
(b)The standby generator shall supply power to the UPS. In the event of a power failure, the UPS shall automatically and immediately commence operation to maintain the supply of power to the high security loads for 30 minutes of operation even if the standby generator fails.
©A UPS design for the various UPS systems shall be made furnishing design criteria and the assumptions made in deriving them.
(a)UPS systems of proven technology shall be provided at all Stations, and the Depot to supply systems that require high security of supply. Separate UPS systems of adequate capacity shall be provided for various loads.
(b)The standby generator shall supply power to the UPS. In the event of a power failure, the UPS shall automatically and immediately commence operation to maintain the supply of power to the high security loads for 30 minutes of operation even if the standby generator fails.
©A UPS design for the various UPS systems shall be made furnishing design criteria and the assumptions made in deriving them.