Australian Standard. Uninterruptible power systems (UPS) Part 1.1: General and safety requirements for UPS used in operator access areas
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1 AS IEC :2002 IEC :2002/Corr.1:2002 Reconfirmed 2013 AS Australian Standard Uninterruptible power systems (UPS) Part 1.1: General and safety requirements for UPS used in operator access areas
2 This Australian Standard was prepared by Committee EL-027, Power Electronics. It was approved on behalf of the Council of Standards Australia on 29 July 2003 and published on 3 October The following are represented on Committee EL-027: Australian Electrical and Electronic Manufacturers Association Australian Communications Authority Bureau of Steel Manufacturers of Australia Electricity Supply Association of Australia University of Wollongong Monash University Keeping Standards up-to-date Standards are living documents which reflect progress in science, technology and systems. To maintain their currency, all Standards are periodically reviewed, and new editions are published. Between editions, amendments may be issued. Standards may also be withdrawn. It is important that readers assure themselves they are using a current Standard, which should include any amendments which may have been published since the Standard was purchased. Detailed information about Standards can be found by visiting the Standards Australia web site at and looking up the relevant Standard in the on-line catalogue. Alternatively, the printed Catalogue provides information current at 1 January each year, and the monthly magazine, The Global Standard, has a full listing of revisions and amendments published each month. We also welcome suggestions for improvement in our Standards, and especially encourage readers to notify us immediately of any apparent inaccuracies or ambiguities. Contact us via at mail@standards.com.au, or write to the Chief Executive, Standards Australia International Ltd, GPO Box 5420, Sydney, NSW This Standard was issued in draft form for comment as DR
3 STANDARDS AUSTRALIA AS (Reconfirmed) RECONFIRMATION OF AS Uninterruptible power systems (UPS) Part 1.1: General and safety requirements for UPS used in operator access areas RECONFIRMATION NOTICE Technical Committee EL-027 has reviewed the content of this publication and in accordance with Standards Australia procedures for reconfirmation, it has been determined that the publication is still valid and does not require change. Certain documents referenced in the publication may have been amended since the original date of publication. Users are advised to ensure that they are using the latest versions of such documents as appropriate, unless advised otherwise in this Reconfirmation Notice. Approved for reconfirmation in accordance with Standards Australia procedures for reconfirmation on 25 September The following are represented on Technical Committee EL-027: Australian Communications and Media Authority Australian Industry Group Bureau of Steel Manufacturers of Australia Engineers Australia RMIT University
4 AS Australian Standard Uninterruptible power systems (UPS) Part 1.1: General and safety requirements for UPS used in operator access areas First published as AS COPYRIGHT Standards Australia International All rights are reserved. No part of this work may be reproduced or copied in any form or by any means, electronic or mechanical, including photocopying, without the written permission of the publisher. Published by Standards Australia International Ltd GPO Box 5420, Sydney, NSW 2001, Australia ISBN
5 ii PREFACE This Standard was prepared by the Standards Australia Committee EL-027, Power Electronics. The objective of this Standard is to provide designers, manufacturers, owners and operators with general and safety requirements for Uninterruptible Power Systems (UPS) with a low voltage a.c. output intended to be installed in operator accessible areas. This Standard is identical with, and has been reproduced from, IEC :2002, Uninterruptible power systems (UPS), Part 1-1: General and safety requirements for UPS used in operator access areas including Corrigendum 1 (December 2002). This Standard is to be read in conjunction with AS/NZS Information technology equipment Safety, Part 1: General requirements. To assist users of this Standard, the definitions for connection of the supply and insulation classes from AS/NZS have been added as notes to clauses 3.4 and 3.8 respectively. This Standard is part of a series, which consists of the following: AS Uninterruptible power systems (UPS) Part 1.1: General and safety requirements for UPS used in operator access areas (this Standard) Part 1.2: General and safety requirements for UPS used in restricted access locations Part 2: Electromagnetic compatibility (EMC) requirements Part 3: Method of specifying the performance and test requirements The terms normative and informative are used to define the application of the annex to which they apply. A normative annex is an integral part of a standard, whereas an informative annex is only for information and guidance. As this Standard is reproduced from an International Standard, the following applies: (a) Its number does not appear on each page of text and its identity is shown only on the cover and title page. (b) In the source text this international standard should read this Australia Standard. (c) A full point should be substituted for a comma when referring to a decimal marker.
6 iii CONTENTS Page 1 Scope and specific applications Scope Specific applications Normative references Definitions General UPS electrical ratings Load types Connection to the supply Circuits and circuit characteristics Insulation Equipment mobility Insulation classes of UPS Enclosures Accessibility Components Power distribution Flammability Miscellaneous Telecommunication networks General conditions for tests Operating parameters for tests Loads for tests Components Power interfaces Marking and instructions General Power rating Safety instructions Main voltage adjustment Power outlets Fuses Wiring terminals Battery terminals Controls and indicators Isolation of multiple power sources IT power systems Protection in building installation High leakage current Thermostats and other regulating devices Language Durability of markings Removable parts Replaceable batteries Operator access with a tool...10
7 iv Page Battery Installation instructions Fundamental design requirements Protection against electric shock and energy hazards Operator access Access to ELV wiring Discharge of capacitors in the primary circuit Backfeed protection Emergency switching device Insulation Limited current circuits Provisions for protective earthing Protective earthing Bonding AC and d.c. power isolation Disconnect devices Three-phase equipment Switch as a disconnect Multiple power sources Ungrounded conductors Overcurrent and earth fault protection Basic requirements Battery circuit protection Location of protective device Rating of protective device Protection of personnel Safety interlocks Operator protection Service person protection Clearances, creepage distances and distances through insulation External signalling circuits Limited power source Wiring, connections and supply General Connection to power Means of connection Wiring terminals for external power conductors Physical requirements Enclosure Stability Mechanical strength Construction details Openings Gas concentration Equipment movement Resistance to fire...20
8 v Page 7.6 Battery location Accessibility and maintainability Vibration Distance Insulation Wiring Electrolyte spillage Ventilation Charging voltages Temperature rise Electrical requirements and simulated abnormal conditions General Earth leakage current Pluggable equipment type B UPS Electric strength Abnormal operating and fault conditions Simulation of faults Conditions for tests Connection to telecommunication networks...24 Annexes...25 Annex H (informative) Guidance on protection against ingress of water and foreign objects...26 Annex L (normative) Backfeed protection test...28 Annex M (normative) Examples of reference load conditions...30 Annex N (normative) Ventilation of battery compartments...34 Annex X (informative) Guidance for disconnection of batteries during shipment...37 Figure L.1 Potential load faults...29 Figure X.1 Precautionary label for products shipped with the battery disconnected...37 Figure X.2 Precautionary label for products shipped with the battery connected...38 Table 1 Location of battery protective device(s)...16 Table 2 Temperature-rise limits...22 Table 3 Permitted temperature limits for magnetic windings at the end of stored energy mode operation...22 Table H.1 Degrees of protection against foreign objects indicated by the first characteristic numeral...26 Table H.2 Degrees of protection against water indicated by the second characteristic numeral...27
9 vi NOTES
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