NRS048-4南非标准.pdfVIP

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NRS048-4南非标准.pdf

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ICS 91.140.50 NRS 048-4:1999 Edition 1.1 ISBN 0-626-11991-X (First edition: Incorporating Amendment No. 1:1999) Rationalized User Specification ELECTRICITY SUPPLY — QUALITY OF SUPPLY Part 4: Application guidelines for utilities Preferred requirements for applications in the Electricity Supply Industry N R S This Rationalized User Specification is issued by the NRS Project on behalf of the User Group given in the foreword and is not a standard as contemplated in the Standards Act, 1993 (Act 29 of 1993). Rationalized user specifications allow user organizations to define the performance and quality requirements of relevant equipment. Rationalized user specifications may, after a certain application period, be introduced as national standards. Amendments issued since publication Amdt No. Date Text affected 1 October 2000 This part of NRS 048 has been amended to include Guidance on voltage regulation planning, which was previously included in NRS 048-2 as a note, and which was deleted as a result of amendment No. 2 to NRS 048-2. Correspondence to be directed to Printed copies obtainable from South African Bureau of Standards South African Bureau of Standards (Electrotechnical Standards)