1、 IEEE Guide for AC Motor Protection Sponsored by the Power System Relaying Committee IEEE 3 Park Avenue New York, NY 10016-5997 USA 20 February 2013 IEEE Power and Energy Society IEEE Std C37.96-2012 (Revision of IEEE Std C37.96-2000) IEEE Guide for AC Motor ProtectionSponsored by the Power System R
2、elaying Committee IEEE 3 Park Avenue New York, NY 10016-5997 USA 20 February 2013 IEEE Power and Energy Society IEEE Std C37.96-2012 (Revision of IEEE Std C37.96-2000) IEEE Std C37.96-2012 (Revision of IEEE Std C37.96-2000) IEEE Guide for AC Motor Protection Sponsor Power System Relaying Committee o
3、f the IEEE Power and Energy Society Approved 5 December 2012 IEEE-SA Standards Board Approved 5 November 2014 American National Standards InstituteAbstract: Generally accepted methods of protection for ac motors are provided. The functions necessary for adequate protection of motors based on type, s
4、ize, and application are identified and summarized. The protective requirements of all motors in every situation is not purported to be detailed in this guide. Keywords: ac motor protection, adjustable-speed drive motor protection, IEEE C37.96TM, induction motor protection, microprocessor-based moto
5、r protection, motor, motor bus transfer, rotating machinery protection, synchronous motor protection, wound rotor motor protection xThe Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New York, NY 10016-5997, USA Copyright 2013 by The Institute of Electrical and Electronics En
6、gineers, Inc. All rights reserved. Published 20 February 2013. Printed in the United States of America. IEEE is a registered trademark in the U.S. Patent +1 978 750 8400. Permission to photocopy portions of any individual standard for educational classroom use can also be obtained through the Copyri
7、ght Clearance Center. Copyright 2013 IEEE. All rights reserved. iv Notice to users Laws and regulations Users of IEEE Standards documents should consult all applicable laws and regulations. Compliance with the provisions of any IEEE Standards document does not imply compliance to any applicable regu
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17、 such licenses. Essential Patent Claims may exist for which a Letter of Assurance has not been received. The IEEE is not responsible for identifying Essential Patent Claims for which a license may be required, for conducting inquiries into the legal validity or scope of Patents Claims, or determinin
18、g whether any licensing terms or conditions provided in connection with submission of a Letter of Assurance, if any, or in any licensing agreements are reasonable or non-discriminatory. Users of this standard are expressly advised that determination of the validity of any patent rights, and the risk
19、 of infringement of such rights, is entirely their own responsibility. Further information may be obtained from the IEEE Standards Association. Copyright 2013 IEEE. All rights reserved. vi Participants At the time this guide was completed, the IEEE Guide for AC Motor Protection Working Group had the
20、 following membership: Prem Kumar, Chair Dale Finney, Vice Chair Hasnain Ashrafi Matt Basler Steve Conrad Tom Farr Dale Fredrickson Jon Gardell Wayne Hartmann Nicholas Hoch Pat Kerrigan Mohamed Khalek Jeff Long Subhash Patel Suhag Patel Mike Reichard Chris Ruckman Sam Sambasivan Sudhir Thakur Joe Uc
21、hiyama The following members of the individual balloting committee voted on this guide. Balloters may have voted for approval, disapproval, or abstention. William Ackerman Ali Al Awazi Mohammed Ashraf Ali G Bartok Matt Basler Martin Best Steven Bezner Wallace Binder Thomas Blair Chris Brooks Bill Br
22、own Derek Brown Gustavo Brunello William Bush William Byrd Paul Cardinal Larry Conrad Steve Conrad Randall Crellin Glenn Davis Gary Donner Randall Dotson Ahmed Elneweihi Dan Evans Dale Finney Rabiz Foda Dale Fredrickson Doaa Galal Jalal Gohari Stephen Grier Randall Groves Ajit Gwal Roger Hedding Sco
23、tt Hietpas Robert Hoerauf Gerald Johnson James Jones Innocent Kamwa John Kay Mohamed Khalek Yuri Khersonsky Joseph L. Koepfinger Boris Kogan Jim Kulchisky Prem Kumar Chung-Yiu Lam Raluca Lascu Michael Lauxman Albert Livshitz Greg Luri Bruce Mackie John McAlhaney, Jr. Kenneth McClenahan John Miller J
24、effery Mizener Jerry Murphy R. Murphy Arthur Neubauer Michael S. Newman Joe Nims Gary Nissen Lorraine Padden Mirko Palazzo Donald Parker Christopher Petrola Robert Pettigrew Iulian Profir Daniel Leland Ransom Michael Roberts Charles Rogers M Sachdev Bartien Sayogo Robert Schuerger Robert Seitz Gil S
25、hultz Veselin Skendzic James Smith Jerry Smith Gary Stoedter Richard Taylor John Tengdin Michael Thompson Wayne Timm Demetrios Tziouvaras Joe Uchiyama Eric Udren John Vergis Ilia Voloh John Wang William Waudby Kenneth White Phil Winston Larry Yonce Jian Yu Luis Zambrano Copyright 2013 IEEE. All righ
26、ts reserved. vii When the IEEE-SA Standards Board approved this guide on 5 December 2012, it had the following membership: Richard H. Hulett, Chair John Kulick, Vice Chair Robert M. Grow, Past Chair Konstantinos Karachalios, Secretary Satish Aggarwal Masayuki Ariyoshi Peter Balma William Bartley Ted
27、 Burse Clint Chaplin Wael Diab Jean-Philippe Faure Alexander Gelman Paul Houz Jim Hughes Joseph L. Koepfinger* David J. Law Thomas Lee Hung Ling Oleg Logvinov Ted Olsen Gary Robinson Jon Walter Rosdahl Sam Sciacca Mike Seavey Yatin Trivedi Phil Winston Don Wright *Member Emeritus Also included are t
28、he following nonvoting IEEE-SA Standards Board liaisons: Richard DeBlasio, DOE Representative Michael Janezic, NIST Representative Patrick Gibbons IEEE Standards Program Manager, Document Development Erin Spiewak IEEE Standards Program Manager, Technical Program Development Copyright 2013 IEEE. All
29、rights reserved. viii Introduction This introduction is not part of IEEE Std C37.96-2012TM-2012, IEEE Guide for AC Motor Protection. The following changes have been made in this revision of the AC Motor Protection Guide: Clause 3, a glossary of component and terminology definitions, has been added.
30、Clause 4.4 has been added and Clause 6.3 has been enhanced to comprehensively discuss ASD protection. Clause 5 has been modified to include information on failure mechanisms of motors. Clause 5.2 has been enhanced to provide information insulation class in motor that is relevant to protection. Claus
31、e 5.2.8 has been enhanced to include discussion on reduced voltage starting and high inertia motor protection. Clause 5.4.3 has been added to discuss considerations for application low ratio CTs. Clause 5.8 has been enhanced to add information on how to apply surge capacitors (protection) to motors.
32、 Clause 6.4 has been added to discuss issues with motor bus transfers. Clause 6.5 has been added for discussion of placement considerations of power factor correction capacitors relative to motor relay sensing CT. Clause 7.2.10.3 has been enhanced to add coordination/application considerations for w
33、hen fuses and relays overlap for motor protection such as motors protected by fused contactors. Clause 7.2.10.8 has enhanced discussion on motor ground fault protection. Clause 7.2.11 has been added to discuss breaker protection for small motors. Clause 8 has been enhanced to include a section (8.2)
34、 to understand several motor data such as cooling time constants needed to set modern microprocessor relays. Annex A.2 has been added to provide relevant tutorial type material for understanding motor dynamics relevant to relay settings such as motor acceleration time, accelerating torque, and impac
35、t of voltage on motor torque. Annex A.3 has added a motor modern microprocessor relay setting example. Copyright 2013 IEEE. All rights reserved. ix Contents 1. Scope 1 2. Normative references 1 3. Definitions 3 4. Equipment description 7 4.1 Induction motors 7 4.2 Synchronous motors 8 4.3 Switching
36、and control 8 4.4 Adjustable speed drives (ASD).15 5. Motor protection requirements 19 5.1 Pullout and stall protection .19 5.2 Stator winding protection .21 5.3 Rotor thermal protection .40 5.4 Stator fault protection .41 5.5 Rotor fault protection 53 5.6 Bearing protection 55 5.7 Abnormal power su
37、pply conditions 58 5.8 Surge protection 65 5.9 Motors or motor controls used in class 1E nuclear exposure 68 6. Motor protection specifications .68 6.1 General considerations68 6.2 Motor protection tables .69 6.3 Adjustable-speed motor protection .78 6.4 Motor bus transfer (MBT) 89 6.5 CT placement
38、considerations 102 7. Setting and adjustment of protective devices 102 7.1 General discussion 102 7.2 Protective device settings .103 8. Device 11multifunction, microprocessor-based protection systems 119 8.1 General .119 8.2 Derivation of motor protection settings from nameplate and datasheet infor
39、mation 119 8.3 Thermal protection in microprocessor-based motor protection systems.121 8.4 Multiple functions generally incorporated into one package 123 8.5 Control functions and features 124 8.6 Data collection, reporting, and remote communications 125 8.7 Application issues .126 Annex A (informat
40、ive) Basics of motor protection .128 Annex B (informative) Bibliography.138 Copyright 2013 IEEE. All rights reserved. 1 IEEE Guide for AC Motor Protection IMPORTANT NOTICE: IEEE Standards documents are not intended to ensure safety, health, or environmental protection, or ensure against interference
41、 with or from other devices or networks. Implementers of IEEE Standards documents are responsible for determining and complying with all appropriate safety, security, environmental, health, and interference protection practices and all applicable laws and regulations. This IEEE document is made avai
42、lable for use subject to important notices and legal disclaimers. These notices and disclaimers appear in all publications containing this document and may be found under the heading “Important Notice” or “Important Notices and Disclaimers Concerning IEEE Documents.” They can also be obtained on req
43、uest from IEEE or viewed at http:/standards.ieee.org/IPR/disclaimers.html. 1. Scope This application guide presents generally accepted methods of protection for ac motors. It identifies and summarizes the functions necessary for adequate protection of motors based on type, size, and application. The
44、 recommendations in this guide are based on typical installations. Information relating to protection requirements, including microprocessor based protection systems, applications, and setting philosophy is provided to enable the reader to determine required protective functions for motor installati
45、ons. Relay protection of squirrel-cage, wound-rotor induction motors, and synchronous motors is presented herein. This guide also summarizes the uses of relays and devices, individually and in combination, so the user may select the necessary equipment, to obtain adequate motor protection. This guid
46、e is concerned primarily with the protection of three-phase, integral horsepower motors and adjustable-speed drives where specifically indicated. This guide does not purport to detail the protective requirements of all motors in every situation. What it does provide is enough information and guidanc
47、e to implement adequate protection for most applications. 2. Normative references The following referenced documents are indispensable for the application of this document (i.e., they must be understood and used, so each referenced document is cited in text and its relationship to this document is e
48、xplained). For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments or corrigenda) applies. IEEE Std C37.96-2012 IEEE Guide for AC Motor Protection Copyright 2013 IEEE. All rights reserved. 2 IEC 60034-15:20
49、09, Rotating electrical machinesPart 15: Impulse voltage withstand levels of form-wound stator coils for rotating a.c. machines.1IEEE Std 1TM-2000, IEEE Recommended PracticeGeneral Principles for Temperature Limits in the Rating of Electrical Equipment and for the Evaluation of Electrical Insulation.2, 3IEEE Std 112TM-2004, IEEE Standard Test Procedure for Polyphase Induction Motors and Generators.IEEE Std 242-2001, IEEE Recommended Practice for Protection and Coordination of Industrial and Commercial Power SystemsIEEE Buff Book (Color Book Series). IEEE
