IEEE 1-2000 en Recommended Practice - General Principles for Temperature Limits in the Rating of Electrical Equipment and for the Evaluation of Electrical Insul.pdf

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1、IEEE Std 1-2000(R2011) (Revision of IEEE Std 1-1986) IEEE Recommended Practice General Principles for Temperature Limits in the Rating of Electrical Equipment and for the Evaluation of Electrical Insulation Sponsor IEEE Standards Coordinating Committee 4, Insulation Systems of the IEEE Power Enginee

2、ring Society Approved 7 December 2000 Reaffirmed 16 June 2011 IEEE-SA Standards Board Abstract: This recommended practice is intended to serve in the preparation of standards that are principally concerned with the thermal endurance of EIM and simple combinations of such materials, with the establis

3、hment of limiting temperatures of EIS, and with the provision of general principles for thermal classification of EIS. Keywords: aging factors, EIM, EIS, electrical insulating material, electrical insulating system, electrical properties, electrical stress, environmental stress, factor of influence,

4、 hottest-spot temperature, mechanical properties, mechanical stress, observable temperature rise, relative temperature index, temperature index, temperature limits, thermal aging, thermal evaluation, voltage stress The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New York,

5、NY 10016-5997, USA Copyright 2001 by the Institute of Electrical and Electronics Engineers, Inc. All rights reserved. Published 30 April 2001. Printed in the United States of America. Print ISBN 0-7381-2716-7 SH94898 PDF: ISBN 0-7381-2717-5 SS94898 No part of this publication may be reproduced in an

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24、ssroom use can also be obtained through the Copyright Clearance Center. Copyright 2001 IEEE. All rights reserved.iiiIntroduction(This introduction is not a part of IEEE Std 1-2000, IEEE Recommended PracticeGeneral Principles for TemperatureLimits in the Rating of Electrical Equipment and for the Eva

25、luation of Electrical Insulation.)There is general agreement from experience that a number of service stresses influence the service life ofelectrical insulation in electric equipment. The purpose of IEEE Std 1-2000 is to provide guidance for thepreparation of thermal-aging test procedures to determ

26、ine the temperature index (TI) of electrical insulatingmaterials (EIM) and the thermal class of electrical insulation systems (EIS).The main changes from IEEE Std 1-1986 are as follows:a) The title was changed from a “Standard” to a “Recommended Practice” to be consistent with thepredominant verb us

27、ed in the text, “should.”b) The table of thermal classification, now Table 3, was modified to include both numerical and letterdesignations and all currently recognized temperature classes.c) The multifactor testing portion of Clause 8 has been deleted because it is beyond the scope of thisrecommend

28、ed practice, which covers temperature limits.This revision has been made with the intent of harmonization with IEC 60085-1984, Thermal evaluation andclassification of electrical insulation, and IEC 60505-1999, Evaluation and qualification of electrical insula-tion systems. This work was done by a wo

29、rking group of IEEE Standards Coordinating Committee 4(SCC4), Insulation Systems. The members of the SCC4 working group are also technical experts of IEC TC98, Electrical Insulation Systems. TC 98 plans to draft a revision to IEC 60085-1984.At the time this revision was completed, the SCC4 working g

30、roup had the following membership:Paulette A. Payne,ChairpersonAt the time this document was approved, the IEEE SCC4 had the following membership:Paulette A. Payne,ChairpersonR. J. Mayschak,SecretaryThe following members of the balloting committee voted on this standard:Robert J. Mayschak Stephen J.

31、 Watson Richard F. WeddletonE. A. BoulterGeorge I. DuncanS. L. DyrnesA. IversenK. N. MathesE. J. VanvoorenLoren B. WagenaarStephen J. WatsonRichard F. WeddletonM. WinkelerE. A. BoulterJerry L. CorkranGeorge I. DuncanAlan M. IversenTim D. LewisT. V. OommenPaulette A. PayneWilliam R. SimpsonLoren B. W

32、agenaarRichard F. WeddletonivCopyright 2001 IEEE. All rights reserved.When the IEEE-SA Standards Board approved this recommended practice on 7 December 2000, it had thefollowing membership:Donald N. Heirman,ChairJames T. Carlo,Vice ChairJudith Gorman,Secretary*Member EmeritusAlso included are the fo

33、llowing nonvoting IEEE-SA Standards Board liaisons:Alan Cookson, NIST RepresentativeDonald R. Volzka, TAB RepresentativeCatherine BergerIEEE Standards Project EditorSatish K. AggarwalMark D. BowmanGary R. EngmannHarold E. EpsteinH. Landis FloydJay Forster*Howard M. FrazierRuben D. GarzonJames H. Gur

34、neyRichard J. HollemanLowell G. JohnsonRobert J. KennellyJoseph L. Koepfinger*Peter H. LipsL. Bruce McClungDaleep C. MohlaJames W. MooreRobert F. MunznerRonald C. PetersenGerald H. PetersonJohn B. PoseyGary S. RobinsonAkio TojoDonald W. ZipseCopyright 2001 IEEE. All rights reserved.vContents1. Overv

35、iew 11.1 Scope 11.2 Purpose. 22. References 23. Definitions 23.1 General definitions. 23.2 Definitions related to electric equipment. 33.3 Definitions related to the evaluation of thermal capability 44. General concepts 54.1 Temperature measurement. 54.2 Additional aging factors. 54.3 Limits of temp

36、erature. 65. Basic considerations in the preparation of standards. 75.1 Service experience . 75.2 General principles for temperature limits 85.3 Purpose of life testing 86. Evaluation of the thermal capability of EIM . 86.1 Thermal aging 96.2 TI and relative temperature index (RTI) of an EIM 106.3 D

37、etermination of TI for EIM by test116.4 Determination of material TI by experience 127. Limiting temperatures and their measurement for EIS 127.1 Derivation of temperature rise . 127.2 Methods of temperature determination 157.3 Effects of altitude. 168. Thermal evaluation of EIS. 178.1 Temperature c

38、lassification of EIS 178.2 EIS classes . 188.3 Thermal evaluation test procedures for EIS. 18Annex A (informative) Illustration of thermal endurance graph, TI, RTI, and HIC 21Annex B (informative) Bibliography. 23Copyright 2001 IEEE. All rights reserved.1IEEE Recommended PracticeGeneral Principles f

39、or Temperature Limits in the Rating of Electrical Equipment and for the Evaluation of Electrical Insulation1. OverviewThese principles are intended to serve in the preparation of IEEE and other standards that deal with theselection of temperature limits and the measurement of temperature for specifi

40、c types of electric equipment.They include an outline of the fundamental considerations and a review of the elements to be considered inapplying the principles to specific cases.1.1 ScopeGuiding principles are included for the development of test procedures for Thermal evaluation of electrical insul

41、ating materials (EIM) Thermal evaluation of electrical insulation systems (EIS) Thermal classification1of EIS for rating electric equipmentThe principles are presented in the following order: Clause 4, General concepts Clause 6, Evaluation of the thermal capability of EIM Clause 7, Limiting temperat

42、ures and their measurement for EIS Clause 8, Thermal evaluation of EISIn the application of these principles, variations are necessary to suit the widely different types of equipmentand service conditions that are considered in equipment standards. When specific equipment, IEEE, or other1Historicall

43、y, the term thermal classificationhas been used in reference to both insulation systems and to electric equipment. Therefore,for clarity, thermal classification should always be used in combination with the word systemor equipment, for example, Class 155System.IEEEStd 1-2000 IEEE RECOMMENDED PRACTIC

44、EGENERAL PRINCIPLES FOR TEMPERATURE LIMITS2Copyright 2001 IEEE. All rights reserved.recognized standards based on these principles are available, they should take precedence over this recom-mended practice.1.2 PurposeThis recommended practice is intended to serve in the preparation of standards that

45、 are principallyconcerned with the thermal endurance of EIM and simple combinations thereof, with the establishment oflimiting temperatures of EIS, and with the provision of general principles for thermal classification of EIS.2. ReferencesThis recommended practice should be used in conjunction with

46、 the following publications. When the fol-lowing standards are superseded by an approved revision, the revisions apply.IEC 60085-1984, Thermal evaluation and classification of electrical insulation.2IEEE Std 98-1984 (Reaff 1993), IEEE Standard for the Preparation of Test Procedures for the Thermal E

47、val-uation of Solid Electrical Insulating Materials.3IEEE Std 99-1980 (Reaff 2000), IEEE Recommended Practice for the Preparation of Test Procedures for theThermal Evaluation of Insulation Systems for Electrical Equipment.IEEE Std 101-1987 (Reaff 1995), IEEE Guide for the Statistical Analysis of The

48、rmal Life Test Data.IEEE Std 943-1986 (Reaff 1992), IEEE Guide for Aging Mechanisms and Diagnostic Procedures in Evalu-ating Electrical Insulation Systems.3. DefinitionsFor this recommended practice, the following terms and definitions apply. The Authoritative Dictionary ofthe IEEE Standards Terms B

49、34should be referenced for terms not defined in this clause.3.1 General definitions3.1.1 aging:The irreversible change of the properties of an electrical insulating material (EIM) or electricalinsulation system (EIS) due to action of one or more factors of influence.3.1.2 aging factor:A factor of influence that causes aging.3.1.3 electrical insulating material(s) (EIM):Material suitable for providing electrical isolation betweenparts at different voltages. It may be a solid, liquid, or gas. 2IEC publications are available from the Sales Department of the International