BS EN 62040-5-3:2017 PDF

What is BS EN 62040-5-3 – Uninterruptible power systems about? BS EN 62040-5-3 is a standard that discusses the performance and test requirements of DC output UPS. UPS is a device that provides battery backup when the electrical power fails or drops to an unacceptable voltage level. BS EN 62040-5-3 establishes the performance and test requirements applied to movable, stationary and fixed electronic DC uninterruptible power systems (DC UPS) that

Are supplied from an AC voltage source not exceeding 1 000 V Deliver a DC output voltage not exceeding 1 500 V Incorporate an energy storage device, and Have a primary function to ensure continuity of DC power to loads.

BS EN 62040-5-3 specifies performance and test requirements of a complete DC UPS and not of individual DC UPS functional units. The individual DC UPS functional units are dealt with in IEC publications referred to in the bibliography that apply so far that they are not in contradiction with BS EN 62040-5-3 . BS EN 62040-5-3 also includes DC UPS performance and test requirements related to interrupters, isolating switches, and tie switches, if any, which are integral to the DC UPS. These components interact with other functional units of the DC UPS to maintain continuity of load power. NOTE: BS EN 62040-5-3 does not cover: