IEEE/PES Transformers Committee

Total Page:16

File Type:pdf, Size:1020Kb

IEEE/PES Transformers Committee Transformers Committee Chair: Sue McNelly Vice Chair: Bruce Forsyth Secretary: Ed teNyenhuis Treasurer: Paul Boman Awards Chair/Past Chair: Stephen Antosz Standards Coordinator: Jim Graham IEEE/PES Transformers Committee Spring 2019 Meeting Minutes Anaheim, CA March 24 – 28, 2019 Unapproved (These minutes are on the agenda to be approved at the next meeting in Fall 2019) TABLE OF CONTENTS GENERAL ADMINISTRATIVE ITEMS 1.0 Agenda 2.0 Attendance OPENING SESSION – MONDAY MARCH 25, 2019 3.0 Approval of Agenda and Previous Minutes – Susan McNelly 4.0 Chair’s Remarks & Report – Susan McNelly 5.0 Vice Chair’s Report – Bruce Forsyth 6.0 Secretary’s Report – Ed teNyenhuis 7.0 Treasurer’s Report – Paul Boman 8.0 Awards Report – Stephen Antosz 9.0 Administrative SC Meeting Report – Susan McNelly 10.0 Standards Report – Jim Graham 11.0 Liaison Reports 11.1. CIGRE – Craig Swinderman 11.2. IEC TC14 – Phil Hopkinson 11.3. Standards Coordinating Committee, SCC No. 18 (NFPA/NEC) – David Brender 11.4. Standards Coordinating Committee, SCC No. 4 (Electrical Insulation) – Evanne Wang 11.5. ASTM D27 – Tom Prevost 12.0 Approval of Transformer Committee P&P Manual - Bruce Forsyth 13.0 Hot Topics for the Upcoming – Subcommittee Chairs 14.0 Opening Session Adjournment CLOSING SESSION – THURSDAY MARCH 28, 2019 15.0 Chair’s Remarks and Announcements – Susan McNelly 16.0 Meetings Planning SC Minutes & Report – Tammy Behrens 17.0 Reports from Technical Subcommittees (decisions made during the week) 18.0 Report from Standards Subcommittee (issues from the week) 19.0 New Business 20.0 Closing Session Adjournment APPENDIXES – ADDITIONAL DOCUMENTATION Appendix 1 – Meeting Schedule Appendix 2 – Semi-Annual Standards Report Appendix 3 – CIGRE Report Appendix 4 – IEC TC14 Liaison Report Appendix 5 – ASTM D27 Appendix 6 - Meeting Planning Subcommittee Report Appendix 7 - IEEE Staff Update Presentation Appendix 8 – Treasurer’s Report Page 2 of 43 Appendix 9 - Transformer 2019 Sponsor P&P Presentation for Monday Main Session Appendix 10 – Task Force Working Group P&P Meeting Minutes ANNEXES – UNAPPROVED MINUTES OF TECHNICAL SUBCOMMITTEES NOTE: The Annexes included in these minutes are unapproved by the respective subcommittees and are accurate as of the date the Transformers Committee meeting minutes were published. Readers are encouraged to check the Transformers Committee website (www.transformerscommittee.org) for the latest revision of the unapproved and the minutes of the next Transformers Committee meeting for final revisions prior to approval. Annex A. Bushings SC – Peter Zhao Annex B. Dielectric Tests SC – Ajith Varghese Annex C. Distribution Transformers SC – Steve Shull Annex D. Dry Type Transformers SC – Charles Johnson Annex E. HVDC Converter Transformers & Reactors – Mike Sharp Annex F. Instrument Transformers SC – Ross McTaggart Annex G. Insulating Fluids SC – David Wallach Annex H. Insulation Life SC – Sheldon Kennedy Annex I. Meetings SC – Tammy Behrens Annex J. Performance Characteristics SC – Craig Stiegemeier Annex K. Power Transformers SC – Bill Griesacker Annex L. Standards SC – Jerry Murphy Annex M. Underground Trans & Network Protectors SC – Dan Mulkey Page 3 of 43 General Administrative Items 1.0 AGENDA Opening Session Monday, Mar 25: 8:00 am - 9:15 am (Attendance recorded by RFID – attendance required to maintain Member status) 1. Welcome and Announcements ............................................................................... Sue McNelly 2. Meeting Minute ..................................................................................................... Tammy Behrens 3. Approval of Agenda ............................................................................................... Sue McNelly 4. Approval of Minutes from Fall 2018 Meeting ......................................................... Sue McNelly 5. Chair’s Report & Administrative Subcommittee Report ......................................... Sue McNelly 6. Vice Chair’s Report ............................................................................................... Bruce Forsyth 7. Secretary’s Report .................................................................................................. Ed teNyenhuis 8. Treasurer’s Report ................................................................................................. Paul Boman 9. Standards Report .................................................................................................... Jim Graham 10. Liaison Representative Reports 10.1. CIGRE ........................................................................................................ Craig Swinderman 10.2. IEC TC-14 ................................................................................................... Christoph Ploetner 10.3. Standards Coordinating Committee, SCC18 (NFPA Standards) ................... David Brender 10.4. Standards Coordinating Committee, SCC4 (Electrical Insulation) ................ Evanne Wang 10.5. ASTM ……………………………………………………………………….. Tom Prevost 11. Approval of Transformer Committee P&P Manual .................................................. Bruce Forsyth 12. Hot Topics for the Upcoming Week ………………………………………… Subcommittee Chairs 13. New Business & Wrap-up ...................................................................................... Sue McNelly Closing Session Thursday, Mar 28: 11:00 am - 12:00 pm 1. Chair's Remarks and Announcements ..................................................................... Sue McNelly 2. Meetings Planning Subcommittee .......................................................................... Tammy Behrens 3. Reports from Technical Subcommittees (decisions made during the week) 3.1. Dielectric Tests ........................................................................................... Ajith Varghese 3.2. Distribution Transformers ........................................................................... Ed Smith 3.3. Dry Type Transformers ............................................................................... Chuck Johnson 3.4. HVDC Converter Transformers & Reactors ................................................ Mike Sharp 3.5. Instrument Transformers ............................................................................. Ross McTaggart 3.6. Insulating Fluids ......................................................................................... David Wallach 3.7. Insulation Life ............................................................................................ Sheldon Kennedy 3.8. Performance Characteristics ........................................................................ Craig Stiegemeier 3.9. Power Transformers .................................................................................... Bill Griesacker 3.10. Standards .................................................................................................... Jerry Murphy 3.11. Subsurface Transformers & Network Protectors .......................................... George Payerle 3.12. Bushings ..................................................................................................... Peter Zhao 4. Additional Report from Standards Coordinator (issues from the week) ................... Jim Graham 5. New Business (continued from Monday) and Wrap-up ........................................... Sue McNelly Page 4 of 43 2.0 ATTENDANCE 2.1 COMMITTEE MEMBER ATTENDANCE The following table lists all Committee Members registered to attend the meeting. See section 2.2 for a list of non-Committee Members registered to attend the meeting. Legend: CM Committee Member CM-LM Committee Member-IEEE Life Member CM-EM Committee Member-Emeritus Committee Member Attendance Member Name Company Mon Thu Type CM-LM Amos, Richard Retired X CM Anderson, Gregory GW Anderson & Associates, Inc. X CM Ansari, Tauhid ABB Inc. X CM Antosz, Stephen Stephen Antosz & Associates, Inc X X CM Arteaga, Javier ABB Inc. X X CM-LM Ayers, Donald Ayers Transformer Consulting X X CM Ballard, Robert DuPont X X CM Barrientos, Israel Prolec GE X X CM-LM Beaster, Barry H-J Enterprises, Inc. X X CM Beauchemin, Claude TJH2b Analytical Services X X CM Betancourt, Enrique Prolec GE X CM Blaydon, Daniel Baltimore Gas & Electric X X CM-LM Boettger, William Boettger Transformer Consulting LLC X X CM Boman, Paul Hartford Steam Boiler X X CM Brown, Darren Howard Industries X CM Callsen, Thomas Weldy-Lamont Associates X X CM Castellanos, Juan Prolec GE X X CM Cheim, Luiz ABB Inc. X CM Chiang, Solomon The Gund Company X CM Chrysler, Rhett ERMCO X X CM Claiborne, C. Clair Claiborne Consulting LLC X X CM Colopy, Craig EATON Corporation X CM Damico, Frank Boldrocchi APC X CM Dauzat, Thomas General Electric X X CM Davis, Eric Burns & McDonnell X CM Del Rio, J. Arturo Siemens X X CM Digby, Scott Duke Energy X CM Dix, Larry Quality Switch, Inc. X CM Dorris, Don Nashville Electric Service X CM Dorsten, James Alabama Power X X CM-LM Fairris, James KMS Electrical Products X X CM Feghali, Pierre N. American Substation Services CM Ferreira, Marcos Engineering Services X X Page 5 of 43 CM Flores, Hugo ABB Inc. CM Foata, Marc Maschinenfabrik Reinhausen X CM Forsyth, Bruce Weidmann Electrical Technology X X CM Foster, Derek Magnetics Design, LLC X CM Garcia, Eduardo Siemens AG X X CM Gardner, James SPX Transformer Solutions, Inc. X X CM Gaytan, Carlos Prolec GE X CM Ghosh, Rob Transformers & Rectifiers (India) Ltd X X CM-LM Girgis, Ramsis ABB Inc. X CM Graham, James Weidmann Electrical Technology X CM Griesacker,
Recommended publications
  • Diploma in Electrical and Electronics Engineering PAGE 1
    ` DIPLOMA IN ELECTRICAL AND ELECTRONICS ENGINEERING COURSES OFFERED CODE COURSE CREDITS YEAR/SEMESTER 15O A) FOUNDATION COURSES : (49 CREDITS) (COMMON FOR ALL PROGRAMMES) 0101 Communicative English – I 5 I/ODD 0102 Engineering Mathematics-I 8 I/ODD 0103 Engineering Physics – I 5 I/ODD 0104 Engineering Chemistry – I 5 I/ODD 0105 Engineering Physics- I Practical 1 I/ODD 0106 Engineering Chemistry – I Practical 1 I/ODD 0107 Communicative English – II 4 I/EVEN 0108 Engineering Mathematics-II 5 I/EVEN 0109 Applied Mathematics 5 I/EVEN 0110 Engineering Physics – II 4 I/EVEN 0111 Engineering Chemistry – II 4 I/EVEN 0112 Engineering Physics – II Practical 1 I/EVEN 0113 Engineering Chemistry – II Practical 1 I/EVEN B) CORE TECHNOLOGY COURSES : ( 43 CREDITS) 0201A Workshop Practical 1 I/ODD 0202 Engineering Graphics-I 3 I/ODD 0203 Engineering Graphics-II 3 I/EVEN 0204 Computer Applications Practical – I 1 I/ODD 0205 Computer Applications Practical – II 1 I/EVEN 3201 Electrical Circuit Theory 6 II/ODD 3202 Electrical Machines - I 5 II/ODD 3203 Electronic Devices and Circuits 5 II/ODD 3204 Electrical Circuits and Machines Practical 3 II/ODD 3205 Electronic Devices and Circuits Practical 3 II/ODD 3206 Electrical Workshop Practical 2 II/ODD 3207 Life and Employability Skills Practical 2 II/ODD 3208 Digital Electronics 5 II/EVEN 3209 Integrated CircuitsPractical 3 II/EVEN Diploma in Electrical and Electronics Engineering PAGE 1 ` C) APPLIED TECHNOLOGY COURSES: (58 CREDITS) 3301 Electrical Machines – II 5 II/EVEN 3302 Measurements and Instruments 4 II/EVEN
    [Show full text]
  • THE ULTIMATE Tesla Coil Design and CONSTRUCTION GUIDE the ULTIMATE Tesla Coil Design and CONSTRUCTION GUIDE
    THE ULTIMATE Tesla Coil Design AND CONSTRUCTION GUIDE THE ULTIMATE Tesla Coil Design AND CONSTRUCTION GUIDE Mitch Tilbury New York Chicago San Francisco Lisbon London Madrid Mexico City Milan New Delhi San Juan Seoul Singapore Sydney Toronto Copyright © 2008 by The McGraw-Hill Companies, Inc. All rights reserved. Manufactured in the United States of America. Except as permitted under the United States Copyright Act of 1976, no part of this publication may be reproduced or distributed in any form or by any means, or stored in a database or retrieval system, without the prior written permission of the publisher. 0-07-159589-9 The material in this eBook also appears in the print version of this title: 0-07-149737-4. All trademarks are trademarks of their respective owners. Rather than put a trademark symbol after every occurrence of a trademarked name, we use names in an editorial fashion only, and to the benefit of the trademark owner, with no intention of infringement of the trademark. Where such designations appear in this book, they have been printed with initial caps. McGraw-Hill eBooks are available at special quantity discounts to use as premiums and sales promotions, or for use in corporate training programs. For more information, please contact George Hoare, Special Sales, at [email protected] or (212) 904-4069. TERMS OF USE This is a copyrighted work and The McGraw-Hill Companies, Inc. (“McGraw-Hill”) and its licensors reserve all rights in and to the work. Use of this work is subject to these terms. Except as permitted under the Copyright Act of 1976 and the right to store and retrieve one copy of the work, you may not decompile, disassemble, reverse engineer, reproduce, modify, create derivative works based upon, transmit, distribute, disseminate, sell, publish or sublicense the work or any part of it without McGraw-Hill’s prior consent.
    [Show full text]
  • Report of Contributions
    MT25 Conference 2017 - Timetable, Abstracts, Orals and Posters Report of Contributions https://indico.cern.ch/e/MT25-2017 MT25 Conferenc … / Report of Contributions 3D Electromagnetic Analysis of Tu … Contribution ID: 5 Type: Poster Presentation of 1h45m 3D Electromagnetic Analysis of Tubular Permanent Magnet Linear Launcher Tuesday, 29 August 2017 13:15 (1h 45m) A short stroke and large thrust axial magnetized tubular permanent magnet linear launcher (TPMLL) with non-ferromagnetic rings is presented in this paper. Its 3D finite element (FE) models are estab- lished for sensitivity analyses on some parameters, such as air gap thickness, permanent magnet thickness, permanent magnet width, stator yoke thickness and four types of permanent magnet material, ferrite, NdFeB, AlNiCO5 and Sm2CO17 are conducted to achieve greatest thrust. Then its 2D finite element (FE) models are also established. The electromagnetic thrusts calculated by 2D and 3D finite element method (FEM) and got from prototype test are compared. Moreover, the prototype static and dynamic tests are conducted to verify the 2D and 3D electromagnetic analysis. The FE software FLUX provides the interface with the MATLAB/Simulink to establish combined simulation. To improve the accuracy of the simulation, the combined simulation between the model of the control system in Matlab/Simulink and the 3D FE model of the TPMLL in FLUX is built in this paper. The combined simulation between the control system and the 3D FE modelof the TPMLL is built. A prototype is manufactured according to the final designed dimensions. The photograph of the developed TPMLL prototype with thrust sensor and the magnetic powder brake as the load are shown.
    [Show full text]
  • SP0504 Power Transformer Testing
    POWER TRANSFORMER TESTING SWP • Hold current licences for any vehicles and equipment they 1. PURPOSE AND SCOPE may be required to operate. The purpose of this Standard Work Practice (SWP) is to Required Training standardise and prescribe the method for testing power transformers. Staff must be current in all Statutory Training relevant for the task. Testing of current transformers, voltage transformers or auxiliary transformers internal to the power transformer are not included in All workers must have completed Field Induction or have this SWP. recognition of prior Ergon Energy Field Experience. Contractors must have completed Ergon Energy's Generic 2. STAFFING RESOURCES Contractor Worker Induction. Adequate staffing resources with the competencies to safely complete the required tasks as per MN000301R165: 8 Level Field 3. DOCUMENTATION Test Competency CS000501F115 . Daily/Task Risk Management Plan These competencies can be gained from, but not limited to any or ES000901R102 . Health and Safety Risk Control Guide all of the following:- SP0504R01. Power Transformer Testing Job Safety Analysis • Qualifying as an Electrical Fitter Mechanic. SP0504C01R01. Power Transformer IR and DDF Temperature • Qualifying as a Technical Service Person. Correction • Training in the safe use of relevant test equipment. SP0504C04. Power Transformer No Load Loss Test Report Requirement for all live work: SP0504C05. Power Transformer Load Loss Test Report • Safety Observer (required for all “live work” as defined in SP0504C06. Power Transformer Load Loss and Impedance the ESO Code of Practice for Electrical Work). Calculation All resources are required to: SP0504C08. Power Transformer Testing Competency Assessment • Have appropriate Switching and Access authorisations for the roles they are required to perform and have the ability SP0504C13.
    [Show full text]
  • The Remote Calibration of Instrument Transformers
    The remote calibration of instrument transformers S. Rens orcid.org/0000-0001-8428-3893 Dissertation submitted in fulfilment of the requirements for the degree Master of Engineering in Electrical and Electronic Engineering at the North-West University Supervisor: Prof. A.P.J. Rens Co-supervisor: Prof. J.E.W. Holm Graduation ceremony: May 2019 Student number: 23509333 ABSTRACT Successful operation and control of a power system is dependent on the accurate measurement of field data. Each measurement received is the result of a chain of instrumentation and data handling processes, and with each process a certain amount of uncertainty is introduced in the measurement result. Instrument transformers, additional transducers, analog-to-digital (A/D) converters, scaling and conversion procedures, synchrophasor recorders and communication equipment all contribute to the uncertainty in measurement. Errors in this measurement chain can either be systematic, random or installation errors. Instrumentation transformers convert (and isolate) primary power system current and voltage waveforms into standardised instrumentation circuit values (i.e. 110 V and 5 A) for more convenient measurement purposes. Nominal conversion ratios, specified on nameplates, may differ from the actual conversion ratios due to manufacturing, drift over time and environmental conditions. To eliminate biased measurements received from instrument transformers, calibration of instrument transformers should be performed periodically. Traditionally this has been done by means field work creating an out-of-service condition. It is time-consuming, expensive and labour intensive. An opportunity exists due to the increased availability of synchronous data for the idea of remote calibration of instrument transformers. This idea estimates a ratio correction factor (RCF) for the instrument transformers using synchrophasor data over a transmission line.
    [Show full text]
  • Explore New Paths with the CT Analyzer – Extended Testing Benefits for Your Applications
    Presentation – 4.1 Explore new paths with the CT Analyzer – Extended testing benefits for your applications Florian Predl, OMICRON, Austria Ie excitation current IS secondary current 1. Introduction IP primary current Xm main inductivity of the core This paper describes on the one hand side the principal Rm magnetic losses of the core test procedure of the CT Analyzer and points out the NP,NS amount of turns of the ideal core advantages of this test method in regards to a RCT ohmic resistance of secondary turns conventional high current injection measurement EMF Electro-Motive Force – secondary core voltage method. On the other hand side it elucidates special US secondary terminal voltage current transformer testing applications and reveals RB ohmic part of complex burden attempts at solutions. Furthermore, the CT Analyzer PC XB inductive part of complex burden Tools are introduced and their advantages and φB phase angle of burden possibilities for the individual user are presented. Figure 2 shows the vector diagram of current and voltages for a linear main inductivity. 2. Principal Test Procedure of the CT Analyzer The CT Analyzer measures the losses of a current transformer according to the equivalent circuit diagram of the current transformer, in terms of the copper losses and the iron losses. The copper losses are described as the winding resistance RCT of the current transformer. The iron losses are described as the eddy losses as eddy resistance Reddy and the hysteresis losses as hysteresis resistance RH of the core. With this knowledge about the total losses of the core, the CT Analyzer is able to calculate the current ratio error and the phase displacement for any primary current and for any secondary burden.
    [Show full text]
  • Eletoz/Vie Patented Sept
    Sept. 7, 1926. 1,598,673 O. B. BLACKWELL ET AL SECRECY COMMUNICATION SYSTEM Filed Dec. 18, 1920 R (2AA%aeaeAA 8 eletoz/vie Patented Sept. 7, 1926. 1,598,673 UNITED STATES PATENT office. OTTO B. BLACKWELL, OF GARDEN CITY, NEW YORK; DE Loss K. MARTIN, or oRANGE, NEW JERSEY; AND GILBERT S. VERNAM, OF BROOKLYN, NEw YoRK, AssGNORs TO AMERICAN TELEPHONE AND TELEGRAPH. COMPANY, A CoRFoRATION of NEW YORK, sECREGY coMMUNICATIoN sYSTEM. Application filed December 18, 1920. Serial No. 431,721. This invention relates to a signaling sys pear more fully from the detailed descrip 50 tem wherein signals are transmitted by the tion hereinafter given. agency of a high frequency wave modu The arrangements of the invention are ill lated in accordance with said signals, and lustrated in the accompanying drawing, in more particularly to a signalling system em the figure of which is shown a sendingsta ploying a plurality of high frequency tion of a system embodying the invention. 35 waves. It is the object of the invention to In the arrangements of the drawing are rovide a system of communication where shown four low frequency channels 1, 2, 3 y secret communications between stations and 4 from which the low frequency sig 10 may be had to the end that stations, other nals, such as four telephone messages, may than those designed to receive, may not re be transmitted through modulating appara 60 ceive complete, intelligible signals. tus out over a transmission line L. The Heretofore in certain types of signaling modulating apparatus is shown schemati systems, in which a high frequency wave is cally and includes the modulators M., M., 15 utilized as the agency for transmitting the Me and Ma, with which are associated the signals, he signals have been transmitted high frequency sources A, B, C, and D, 65 by electromagnetic waves of a definite high which are of suitable different frequencies.
    [Show full text]
  • IP 202-1 List of Materials
    Changes to the List of Materials August 3, 2021 1. Page be(2.3) a. Added Siemens i. CMR May 6, 2021 1. Page Ugn-2 a. Added Aluma-Form i. ENC Series April 27, 2021 1. Page Ugk-2.2 a. Added Prysmian i. PCT Series (15, 25, 35kV) February 9, 2021 1. Page be(4.3) a. Added Southern States single-phase SSR type recloser. February 4, 2021 1. Pages rp(1), rp(1.2) a. Revised “Cantega” to “Hubbell Power Systems”. b. Added trademark to Reliaguard. December 10, 2020 1. Page ap-2 a. Modified page number from “1.1” to “2”. November 18, 2020 1. Pages an-3 and an(3.1) a. Moved Virginia Transformer from page an(3.1) Conditional to page an-3 Full Acceptance. November 6, 2020 1. Page ae-1 a. Added Celeco i. Catalog Numbers: HSCEL, RPCEL October 26, 2020 1. Page Uhb-1.1 a. Added TE Connectivity i. Catalog Numbers: 25 kV, used with loadbreak connectors (without test point) - ELB-25- 200 series without jacket seal, ELB-25-200-ES series with jacket seal October 23, 2020 1. Page p(1) a. Added TE Connectivity (Raychem) i. Catalog number: TIL Series September 30, 2020 1. Pages a(3), ea(4), ea(5) – Added new Hendrix insulator models. a. Catalog Numbers: HPI-15VTC, HPI-15VTP, HPI-25VTC-02, HPI-35VTC-02, HPI-35VTP-02, HPI-LP-14FS/FA, HPI-LP-16F, HPI-CLP-15, HPI-CLP-17, HPI-CLP-20 July 7, 2020 1. Page cm-2 – Added Aluma-Form, Inc.
    [Show full text]
  • Outdoor Instrument Transformers
    Outdoor Instrument Transformers Buyer’s Guide Contents Table of Contents Chapter - Page Products Introduction A - 2 Explanations B - 1 Silicone Rubber (SIR) Insulators C - 1 Design Features and Advantages Current Transformers IMB D - 1 Inductive Voltage Transformer EMF E - 1 Capacitor Voltage Transformer CPA/CPB F - 1 Technical Technical Catalogues Information CT IMB G - 1 VT EMF H - 1 CVT CPA/CPB (IEC) I - 1 CVT CPA/CPB (ANSI) J - 1 Optional Cable Entry Kits - Roxtec CF 16 K - 1 Quality Control and Testing L - 1 Inquiry and Ordering Data M - 1 A-1 Edition 5, 2008-03 ABB Instrument Transformers — Buyer’s Guide Introduction Day after day, all year around— with ABB Instrument Transformers ABB has been producing instrument trans- All instrument transformers supplied by ABB formers for more than 60 years. Thousands are tailor-made to meet the needs of our of our products perform vital functions in customers. electric power networks around the world – An instrument transformer must be capable of day after day, all year round. withstanding very high stresses in all climatic Their main applications include revenue conditions. We design and manufacture our metering, control, indication and relay pro- products for a service life of at least 30 years. tection. Actually, most last even longer. Product range Type Highest Voltage for Equipment (kV) Current Transformer IMB Hairpin/Tank type IMB 36 - 800 36 - 765 Paper, mineral oil insulation, quartz filling Inductive Voltage Transformer EMF Paper, mineral oil insulation, quartz filling EMF 52 - 170 52 - 170 Capacitor Voltage Transformer CP CVD: Mixed dielectric polypropylene-film and synthetic oil.
    [Show full text]
  • Practices of Insulating Materials in Instrument Transformers
    500 NATIONAL POWER SYSTEMS CONFERENCE, NPSC 2002 Practices of Insulating Materials in Instrument Transformers A.Masood, M.U.Zuberi, M.S.Alam, E.Husain, M.Y.Khan I. INTRODUCTION TABLE I Type of Test Applied on The study of insulating material selection, behavior and Type Test CT PT performance are important aspects to be considered for Short Time Current Test Yes No designing any electrical instrument, machine or device. Temperature Rise Test Yes Yes Apart from conductors, insulator forms the backbone of Lightning Impulse Voltage Withstand Yes Yes any electrical system. Though insulators form the Test backbone, they are also the weakest link in the system. H.V.Power Frequency Wet Withstand Yes Yes Hence, maximum care and attention is needed while Test choosing insulating materials for a given application so Routine Test that it gives the desired performance under worst working conditions. This paper addresses the problem of selection H.V. Power Frequency Dry Withstand Yes Yes criteria, test specifications and material treatment to justify Test on Primary Winding the use of various dielectrics/insulating materials used for H.V. Power Frequency Dry Withstand Yes Yes insulating high voltage instrument transformers i.e. CTs Test on Secondary Winding and PTs. Over-Voltage Inter-turn Test While in use, insulating materials are subjected to Partial Discharge Test Yes No various electrical, mechanical, thermal stresses and partial Yes Yes discharges. Therefore, criteria for selection of these materials is, that, they must withstand these stresses The temperature rise of winding when subjected to without or with such rate of deterioration such that their continuous thermal current or voltage as applicable to performance is not affected throughout the life expectancy instrument transformer at the rated frequency and of the equipment, which is considered approximately 25- current/voltage output determines the class of insulation or 30 years.[1] dielectric surrounding the winding.
    [Show full text]
  • Theory and Technology of Instrument Transformers
    THEORY AND TECHNOLOGY OF INSTRUMENT TRANSFORMERS TRAINING BOOKLET: 2 The information in this document is subject to change. Contact ARTECHE to confi rm the characteristics and availability of the products described here. Jaime Berrosteguieta / Ángel Enzunza © ARTECHE Moving together CONTENTS 1. Instrument Transformers | 4 5. Other Instrument Transformers | 31 1.1. Defi nitions | 4 5.1. Combined Instrument 1.2. Objective | 4 Transformers | 31 1.3. General Points in 5.2. Capacitive Voltage Current Transformers | 5 Transformers (CVT) | 32 1.4 General Points in Voltage Transformers | 6 6. Dielectric insulation | 33 6.1. Insulation of instrument 2. Theory of Instrument Transformers | 7 transformers | 33 2.1. Basics | 7 6.2. Insulation Testing | 34 2.2. Equivalent Transformer | 8 2.3. Equivalent Transformer Standards | 35 circuit Diagram | 8 7. 7.1. Standards Consulted | 35 7.2. Insulation Levels | 35 3. Current Transformers | 9 7.3. Environmental Conditions | 35 3.1. General Equations | 9 7.4. Current Transformers | 36 3.2. Vectorial Diagram | 9 7.5. Voltage Transformers | 43 3.3. Current & Phase Errors | 10 3.4. Current Transformers for Measuring | 12 3.5. Current Transformers for Protection | 14 3.6. Current Transformers for Protection which Require Transient Regime Response | 16 3.7. Burden | 18 3.8. Resistance to Short-circuits | 19 3.9. Operation of an Open Circuit Current Transformer| 20 3.10. Special Versions of Current Transformers | 20 3.11. Choosing a Current Transformer | 21 4. Voltage Transformers | 22 4.1. General Equations | 22 4.2. Vectorial Diagram | 22 4.3. Voltage & Phase Errors | 23 4.4. Voltage Transformers for Measuring | 24 4.5.
    [Show full text]
  • Practical Transformer Handbook
    Practical Transformer Handbook Practical Transformer Handbook Irving M. Gottlieb RE. <» Newnes OXFORD BOSTON JOHANNESBURG MELBOURNE NEW DELHI SINGAPORE Newnes An Imprint of Butterworth-Heinemann Linacre House, Jordan Hill, Oxford OX2 8DP 225 Wildwood Avenue, Woburn, MA 01801-2041 A division of Reed Educational and Professional Publishing Ltd S. A member of the Reed Elsevier pic group First published 1998 Transferred to digital printing 2004 © Irving M. Gottlieb 1998 All rights reserved. No part of this publication may be reproduced in any material form (including photocopying or storing in any medium by electronic means and whether or not transiently or incidentally to some other use of this publication) without the written permission of the copyright holder except in accordance with the provisions of the Copyright, Designs and Patents Act 1988 or under the terms of a licence issued by the Copyright Licensing Agency Ltd, 90 Tottenham Court Road, London, England WIP 9HE. Applications for the copyright holder's written permission to reproduce any part of this publication should be addressed to the publishers British Library Cataloguing in Publication Data A catalogue record for this book is available from the British Library ISBN 0 7506 3992 X Library of Congress Cataloguing in Publication Data A catalogue record for this book is available from the Library of Congress DLAOTA TREE Typeset by Jayvee, Trivandrum, India Contents Preface ix Introduction xi 1 An overview of transformer sin electrical technology 1 Amber, lodestones, galvanic cells
    [Show full text]