IEC_TR_62711.pdf

FORM DTR(IEC)2009-01-09 Registered trademark of the International Electrotechnical Commission 3/1029/DTR DRAFT TECHNICAL REPORT Project number IEC/TR 62711/Ed.1 IEC/TC or SC 3 Secretariat Sweden Distributed on 2010-11-26 Voting terminates on 2011-01-28 Also of interest to the following committees TC 57,TC65,SC65B,TC 95 Supersedes document Functions concerned Safety EMC Environment Quality assurance THIS DOCUMENT IS STILL UNDER STUDY AND SUBJECT TO CHANGE.IT SHOULD NOT BE USED FOR REFERENCE PURPOSES.RECIPIENTS OF THIS DOCUMENT ARE INVITED TO SUBMIT,WITH THEIR COMMENTS,NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION.Title IEC/TR 62711:Mnemonics and designations of symbols for measuring relays,instruments and related device TC 3 PT 42 has prepared a draft Technical report including recommendations for use of mnemonics in symbols related to measuring relays,instruments and similar devices.It was decided in the plenary meeting 2008 in Prague that the work of PT 42 will result in a TR.The draft was preliminary circulated in document 3/1023/DC to the NCs before the plenary meeting 2010 in Seattle.In the plenary meeting in Seattle it was decided to circulate the document as DTS to the NCs for commentary and voting.Copyright 2010 International Electrotechnical Commission,IEC.All rights reserved.It is permitted to download this electronic file,to make a copy and to print out the content for the sole purpose of preparing National Committee positions.You may not copy or mirror the file or printed version of the document,or any part of it,for any other purpose without permission in writing from IEC.62711/Ed.1 TR IEC:2010 2 3/1029/DTR CONTENTS 1 Scope.5 2 References.5 3 Definitions.6 3.1 Protection relay.6 4 Measuring relay symbols.6 5 Measuring instrument.6 6 Mnemonics and designations for measuring relays and instruments.6 6.1 Measuring relays.7 6.1.1 prefix.7 6.1.2 suffix.7 6.1.3 general.7 6.1.4 current.8 6.1.5 voltage.9 6.1.6 frequency.9 6.1.7 impedance.10 6.1.8 power.10 6.1.9 phase.10 6.1.10 other quantities.11 6.1.11 other fault phenomenon.11 6.1.12 pilot wire relay.12 6.1.13 carrier pilot relay.12 6.1.14 microwave relay.12 6.1.15 calculation type.13 6.1.16 apparatus protection and control.13 6.1.17 other type.14 6.1.18 power system control.16 6.2 power system measurement equipment.16 7 Bibliography.20 FIGURES Figure 1 The general symbol for a measuring relay in IEC 60617 DB.5 Figure 2 The general symbols for a measuring instrument in IEC 60617.5 62711/Ed.1 TR IEC:2010 3 3/1029/DTR INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MNEMONICS AND DESIGNATIONS OF SYMBOLS FOR MEASURING RELAYS,INSTRUMENTS AND RELATED DEVICE FOREWORD 1)The International Electrotechnical Commission(IEC)is a worldwide organisation for standardization comprising all national electrotechnical committees(IEC National Committees).The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields.To this end and in addition to other activities,IEC publishes International Standards,Technical Specifications,Technical Reports,Publicly Available Specifications(PAS)and Guides(hereafter referred to as“IEC Publication(s)”).Their preparation is entrusted to technical committees;any IEC National Committee interested in the subject dealt with may participate in this preparatory work.International,governmental and non-governmental organisations liaising with the IEC also participate in this preparation.IEC collaborates closely with the International Organisation for Standardization(ISO)in accordance with conditions determined by agreement between the two organisations.2)The formal decisions or agreements of IEC on technical matters express,as nearly as possible,an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees.3)IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense.While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate,IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user.4)In order to promote international uniformity,IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications.Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.5)IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication.6)All users should ensure that they have the latest edition of this publication.7)No liability shall attach to IEC or its directors,employees,servants or agents including individual