Uninterruptible power systems (UPS) - Part 5-3: DC output UPS - Performance and test requirements

Overview

IEC 62040-5-3:2016 is a standard that defines performance and test requirements for DC-output uninterruptible power systems. The first edition, published on 26 October 2016, runs to 133 pages, and an amendment is in preparation. The subject matters to designers interested in 48 V and 380 V DC distribution and telecom-style rectifier plants. The standard is paid, and this summary relies only on the publisher's public catalogue abstract.

Its scope is DC UPS fed from AC up to 1,000 V, delivering DC output up to 1,500 V, and including integral energy storage. The primary function of these systems is continuity of DC power to loads. Unlike conventional AC-output UPS, this defines topologies in which loads operating on DC voltage are fed directly.

The standard's approach is to address a complete DC UPS system rather than individual functional units. Performance and test requirements are set for the whole system, which makes it easier to compare different manufacturers' systems against a common yardstick. AC-output UPS fall outside this part, and other parts such as IEC 62040-3 apply to them. Related documents include IEC 62040-3, ETSI EN 300 132-3 and OCP Open Rack. Because an amendment is being prepared, users should check the currently valid version.

Key points

1. Applies to DC UPS supplied from AC up to 1,000 V, delivering DC output up to 1,500 V, with energy storage.
2. Primary function: continuity of DC power to loads.
3. Specifies performance and test requirements of a complete DC UPS, not individual functional units.
4. Relevant to 48 V/380 V DC distribution and telecom-style rectifier plants.
5. Edition 1 published 2016-10-26 (133 pages); Amendment 1 is in preparation.
6. Related documents: IEC 62040-3, ETSI EN 300 132-3 and OCP Open Rack.

Using it in design

• In the power topology, support DC-output UPS and rectifier plants as a source type for DC distribution designs.
• Add output voltage window and autonomy (backup time) fields to the source definition.
• Route the performance data of these systems to the DC busway and rack PSU model.

Who should read it

Electrical engineers designing data centres with DC distribution and telecom-style rectifier plants.

Related standards

• IEC 62040-3
• ETSI EN 300 132-3
• OCP Open Rack

Publication details

Authors

IEC TC 22

Publisher

IEC

Year

2016

Document number

IEC 62040-5-3:2016

Document language

English

Source type

Standard

Access

Citation only

Licence

Copyright retained; citation only — the publisher’s terms apply to the original document

Citation