SOUTH AFRICAN NATIONAL STANDARD

Transcription

1 ISBN SOUTH AFRICAN NATIONAL STANDARD Information technology equipment Safety Part 1: General requirements This national standard is the identical implementation of, and is adopted with the permission of the International Electrotechnical Commission. WARNING This document references other documents normatively. Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001 Tel: Fax: SABS

2 Table of changes Change No. Date Scope IEC corr Corrected to change the requirements for the connection of TNV circuits to other circuits and the determination of minimum clearances, to ensure the protection of equipment users from overvoltages on the cable distribution system, to change the mandrel test, the formula for determining the current of telephone ringing signals, and the figure on the three line (and neutral) IT power distribution system. IEC amdt Amended to add a definition, to modify the rules for the application of capacitor ratings, the informative examples of application of capacitors, and the requirements for components, markings and instructions, distances, protection from hazards, physical requirements, electric strength, connection to telecommunication networks, and connection to cable distribution systems, to modify the impact test, the stress relief test, the ultraviolet light conditioning test, the alternative method for determining minimum clearances, the table of electrochemical potentials, and the criteria for telephone ringing signals, to add stranded winding wires, requirements for motor tests under abnormal conditions, tests for the evaluation of integrated circuit (IC) current limiters, and requirements for the mounting means of rack-mounted equipment and shredders, and to update the bibliography and the index. IEC corr. 1 to amdt Corrected to delete a requirement in the note to power rating markings, to change the clause on General, and to update the index. IEC amdt Amended to modify the introduction, scope and definitions, to add requirements to the clauses covering components, markings and instructions, connection to cable distribution systems, protection from hazards, wiring, connections and supply, and physical requirements, to modify the table on test voltages for electric strength tests based on required withstand voltages, the clause on connection to telecommunication networks and the requirements in the annexes covering motor tests under abnormal conditions, measuring instruments for touch current tests, measurement of clearances and creepage distances, alternative method for determining minimum clearances, table of electrochemical potentials, criteria for telephone ringing signals, voltage dependent resistors (VDRs), insulated winding wires for use without interleaved insulation, ultraviolet light conditioning test, and changes in the second edition, to modify and add requirements for evaluation of integrated circuit (IC) current limiters, and to update the index.

3 National foreword This South African standard was approved by National Committee SABS/TC 072, Safety of electrical appliances and electronic equipment, in accordance with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This document was approved for publication in December This document supersedes SANS :2010 (edition 2). This document is referenced in the Compulsory specification for electrical and electronic apparatus, as published by Government Notice No. R. 89 (Government Gazette No ) of 6 February

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5 IEC INTERNATIONAL STANDARD NORME INTERNATIONALE colour inside Information technology equipment Safety Part 1: General requirements Matériels de traitement de l'information Sécurité Partie 1: Exigences générales INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS ; ISBN Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé. Registered trademark of the International Electrotechnical Commission Marque déposée de la Commission Electrotechnique Internationale