1、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
2、 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 RELEVA
3、NT 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 rel
4、ated 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
5、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 Nationa
6、l 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 s
7、ymbols.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
8、.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 FIGUR
9、ES 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 REL
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