1、 IEEE Standard for the Surge Parameters of Isolating Transformers Used in Networking Devices and Equipment Sponsored by the Surge Protective Devices Committee IEEE 3 Park Avenue New York, NY 10016-5997 USA IEEE Power and Energy Society IEEE Std C62.69-2016 IEEE Std C62.69-2016 IEEE Standard for the
2、Surge Parameters of Isolating Transformers Used in Networking Devices and Equipment Sponsor Surge Protective Devices Committee of the IEEE Power and Energy Society Approved 29 January 2016 IEEE-SA Standards Board Abstract: Terms, test methods, test circuits, measurement procedures, and preferred res
3、ult values for the surge mitigation parameters of isolating transformers used in networking devices and equipment are set in this standard. Three types of isolating transformer are considered: mains low frequency power, high frequency power (switching mode power supplies) and signal (e.g., Ethernet
4、data). Keywords: 1.2/50, breakdown, IEEE C62.69, impulse voltage, insulation, insulation resistance, lightning overvoltage, surge, transformer The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New York, NY 10016-5997, USA Copyright 2016 by The Institute of Electrical and Ele
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34、e Low Voltage Solid State Protective Components Working Group had the following membership: Michael J. Maytum, Chair Albert Martin, Vice Chair Robert Ashton Leonard Drewes Ernie Gallo Wolfgang Oertel Bill Travis The following members of the individual balloting committee voted on this standard. Ball
35、oters may have voted for approval, disapproval, or abstention. Robert Ashton Frank Basciano William Brumsickle Suresh Channarasappa Chuanyou Dai Gary Donner Sourav Dutta Doaa Galal Randall Groves Raymond Hill Ronald Hotchkiss Laszlo Kadar Yuri Khersonsky Joseph L. Koepfinger* Jim Kulchisky Paul Lind
36、emulder Greg Luri Albert Martin Michael J. Maytum Michael Newman Wolfgang Oertel Lorraine Padden Donald Parker Bansi Patel Percy Pool Iulian Profir Michael Roberts Thomas Rozek Bartien Sayogo Gary Stoedter David Tepen James Timperley John Vergis James Wilson When the IEEE-SA Standards Board approved
37、 this standard on 29 January 2016, it had the following membership: Jean-Philippe Faure, Chair Ted Burse, Vice Chair John Kulick, Past Chair Konstantinos Karachalios, Secretary Chuck Adams Masayuki Ariyoshi Stephen Dukes Jianbin Fan J. Travis Griffith Gary Hoffman Ronald W. Hotchkiss Michael Janezic
38、 Joseph L. Koepfinger* Hung Ling Kevin Lu Annette D. Reilly Gary Robinson Mehmet Ulema Yingli Wen Philip Winston Howard Wolfman Don Wright Yu Yuan Daidi Zhong *Member Emeritus 6 Copyright 2016 IEEE. All rights reserved. Introduction This introduction is not part of IEEE Std C62.69-2016, IEEE Standar
39、d for the Surge Parameters of Isolating Transformers Used in Networking Devices and Equipment. Optical fiber to the home has been gradually replacing the wire feed telephone service since about 2005. Fiber to the home deployment rapidly increased from 2010 onward. Along with the increase of installa
40、tions there was a reported increase in the failures of home networking equipment B27, B28, and B24 due to lightning overvoltages.1Failures of the Ethernet Local Area Network (LAN) ports have been attributed to use of inappropriate surge protective devices (SPDs) and lack of insulation coordination,
41、which caused the breakdown of transformers, associated wiring, and connectors. This is a global problem with home networking equipment failures being reported in Japan B26 and the U.S. B23.1The numbers in brackets correspond to those of the bibliography in Annex A. 7 Copyright 2016 IEEE. All rights
42、reserved. Contents 1. Overview 9 1.1 Scope . 9 1.2 Purpose .10 2. Definitions, symbols, acronyms, and abbreviations 10 2.1 Definitions 10 2.2 Symbols 12 2.3 Acronyms and abbreviations 14 3. Surge parameters .14 3.1 Transformer surge mitigation .14 3.2 Common-mode surges 16 3.3 Differential-mode surg
43、es 16 4. Characteristics .17 4.1 Characteristic measurement 17 4.2 Inter-winding capacitance .18 4.3 Insulation resistance (IR) 20 4.4 Signal transformer voltage-time product 22 5. Ratings .23 5.1 Rating verification 23 5.2 Rated impulse voltage.24 5.3 Signal transformer rated winding dc .28 Annex A
44、 (informative) Bibliography 31 Annex B (informative) 1.2/50 Impulse 33 B.1 Introduction 33 B.2 Term definitions .33 B.3 1.2/50 waveform parameters 34 8 Copyright 2016 IEEE. All rights reserved. IEEE Standard for the Surge Parameters of Isolating Transformers Used in Networking Devices and Equipment
45、IMPORTANT NOTICE: IEEE Standards documents are not intended to ensure safety, security, health, or environmental protection, or ensure against interference with or from other devices or networks. Implementers of IEEE Standards documents are responsible for determining and complying with all appropri
46、ate safety, security, environmental, health, and interference protection practices and all applicable laws and regulations. This IEEE document is made available for use subject to important notices and legal disclaimers. These notices and disclaimers appear in all publications containing this docume
47、nt and may be found under the heading “Important Notice” or “Important Notices and Disclaimers Concerning IEEE Documents.” They can also be obtained on request from IEEE or viewed at http:/standards.ieee.org/IPR/disclaimers.html. 1. Overview 1.1 Scope This standard sets terms, test methods, test cir
48、cuits, measurement procedures, and preferred result values for the surge parameters of isolating transformers used in networking devices and equipment. Three types of isolating transformer are considered: mains low frequency power, high frequency power (switching mode power supplies) and signal (e.g
49、., Ethernet data). The surge parameters of the isolating transformer insulation barrier covered by this standard are as follows: Rated impulse voltage Input winding to output winding capacitance Insulation resistance Additional parameters for signal isolating transformers are as follows: Core saturation voltage-time product Rated input winding rms current for a given temperature rise 9 Copyright 2016 IEEE. All rights reserved. IEEE Std C62.69-2016 IEEE Standard for the Surge Parameters of Isolating Transformers Used in Networking Devices and Equipment T
