1、 IEEE Guide for Grounding of Instrument Transformer Secondary Circuits and Cases Sponsored by the Power System Relaying Committee IEEE 3 Park Avenue New York, NY 10016-5997 USA IEEE Power and Energy Society IEEE Std C57.13.3-2014 (Revision of IEEE Std C57.13.3-2005) IEEE Std C57.13.3-2014 (Revision
2、of IEEE Std C57.13.3-2005) IEEE Guide for Grounding of Instrument Transformer Secondary Circuits and Cases Sponsor Power System Relaying Committee of the IEEE Power and Energy Society Approved 10 December 2014 IEEE-SA Standards Board Abstract: General and specific recommendations for grounding curre
3、nt and voltage transformer secondary circuits and cases of connected equipment are covered in this guide. Although most diagrams included in this guide show relaying applications, the recommended practices apply equally to metering and other areas where instrument transformers are used. Grounding pr
4、actices presently used, and practices that were not previously reported, are included in this guide. Specifically, a review of other than North American grounding practices is included. Keywords: Capacitive voltage transformer, combined metering unit, current transformer, grounding of cases of instr
5、ument transformers, grounding secondary circuits of instrument transformers, IEEE C57.13.3, instrument transformer, linear coupler, low energy transducer, resistive voltage transformer, voltage transformer. The Institute of Electrical and Electronics Engineers, Inc. 3 Park Avenue, New York, NY 10016
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35、ciation. Participants At the time this IEEE guide was completed, the PC57.13.3 Working Group for Grounding of Instrument Transformer Secondary Circuits and Cases had the following membership: Brian P. Mugalian, Chair Bruce A. Magruder, Vice Chair George Bartok Dean Bender Robert Beresh Lee Bigham Ze
36、eky Bukhala Stephen Conrad Dominick Fontana Gerald Johnson Gary Kobet Jeff Long Dhirenkumar Patel Bruce Pickett Jeff Pond Mohindar Sachdev Donald Sevcik Mike Stojak Joe Uchiyama Johan Vandenberg Delbert D. Weers Ray Young Richard Young The following members of the individual balloting committee vote
37、d on this guide. Balloters may have voted for approval, disapproval, or abstention. William Ackerman Ali Al Awazi Mihaela Albu Steven Alexanderson Jay Anderson Jeffrey Barsch George Bartok Michael Basler Philip Beaumont Kenneth Behrendt Robert Beresh Martin Best Steven Bezner Wallace Binder Gustavo
38、Brunello Zeeky Bukhala Paul Cardinal Stephen Conrad Randall Crellin Ratan Das Gary Donner Randall Dotson Sourav Dutta Doaa Galal Frank Gerleve Jeffrey Gilbert Jalal Gohari Stephen Grier Randall Groves Ajit Gwal Scott Hietpas Jerry Hohn David Horvath Gerald Johnson Laszlo Kadar John Kay Gael Kennedy
39、Yuri Khersonsky James Kinney Gary Kobet Joseph L. Koepfinger Boris Kogan Jim Kulchisky Saumen Kundu Chung-Yiu Lam Michael Lauxman Greg Luri Bruce Mackie Bruce A. Magruder John Miller Venkatesh Minisandram Brian P. Mugalian Randolph Mullikin Jerry Murphy Arthur Neubauer Michael Newman Joe Nims Gary N
40、issen James OBrien Gearold O. H. Eidhin Ted Olsen Lorraine Padden Mirko Palazzo Dhirenkumar Patel Bruce Pickett Samala Santosh Reddy Michael Roberts Charles Rogers Zoltan Roman Jesse Rorabaugh Mohindar Sachdev Steven Sano Bartien Sayogo Robert Seitz Donald Sevcik Veselin Skendzic James Smith Jeremy
41、Smith Jerry Smith Gary Smullin Gary Stoedter Michael Thompson Robert Thornton-Jones Demetrios Tziouvaras Joe Uchiyama John Vergis Ilia Voloh John Wang Delbert D. Weers Kenneth White Philip Winston Ray Young Richard Young Jian Yu Copyright 2015 IEEE. All rights reserved. viWhen the IEEE-SA Standards
42、Board approved this guide on 10 December 2014, it had the following membership: John Kulick, Chair Jon Walter Rosdahl, Vice Chair Richard H. Hulett, Past Chair Konstantinos Karachalios, Secretary Peter Balma Farooq Bari Ted Burse Clint Chaplin Stephen Dukes Jean-Philippe Faure Gary Hoffman Michael J
43、anezic Jeffrey Katz Joseph L. Koepfinger* David J. Law Hung Ling Oleg Logvinov T. W. Olsen Glenn Parsons Ron Petersen Adrian Stephens Peter Sutherland Yatin Trivedi Phil Winston Don Wright Yu Yuan *Member Emeritus Also included are the following nonvoting IEEE-SA Standards Board liaisons: Richard De
44、Blasio, DOE Representative Michael Janezic, NIST Representative Patrick Gibbons IEEE-SA Content Production and Management Erin Spiewak IEEE-SA Technical Program Operations Copyright 2015 IEEE. All rights reserved. viiIntroduction This introduction is not part of IEEE Std C57.13.3-2014, IEEE Guide fo
45、r Grounding of Instrument Transformer Secondary Circuits and Cases. The primary emphases of this guide are personnel safety and proper performance of relays at the electric power system frequencies. The grounding and shielding of cables and other grounding considerations are not addressed. However,
46、references dealing with these and related subjects are included in the bibliography (see Annex D). Historically, it has been a common practice in the U.S. to connect the secondary circuits of current transformers (CTs) and voltage transformers (VTs) to the station ground. The present preferred pract
47、ice is to locate a ground on the instrument transformer secondary circuit, along with suitable ground isolation test facilities, at the first point of application (switchboard or relay panel). The circuit ground isolation facilities make it convenient to test the integrity of the insulation from gro
48、und. Previous publications have made significant contributions toward making the grounding practices more consistent in some areas. This guide includes the contributions that are generally practiced today, makes revisions where present experience and practice show them to be desirable, and suggests
49、grounding techniques in new areas of interest. Diagrams are included to illustrate the grounding techniques. This guide contains general and specific recommendations for grounding CT and VT secondary circuits and cases of connected equipment. The recommended practices apply to all transformers of this type, including capacitive VTs and linear couplers, irrespective of the voltage of the primary circuit or whether the primary windings are connected to the power circuits or are connected to the secondary circuits of other transformers, such as auxiliary CTs or VTs. Most diagrams
