ČSN EN 62040-5-3

This part of IEC 62040 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. This document 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 this document. This document does not cover conventional AC input distribution boards and their associated switches, conventional DC distribution boards and their associated switches, conventional AC UPSs covered by IEC 62040-3, low-voltage DC power supply devices covered by a specific product standard, for example IEC 61204, and those covered by a specific product standard, for example ITU communication standards, and systems wherein the output voltage is derived from a rotating machine.