DIELECTRIC TEST SUBCOMMITTEE

SCOPE

Study and review engineering aspects of test voltage requirements for service conditions, or conversely, voltage tests that will determine that service requirements are met for liquid filled transformers and reactors;
Develop and maintain related standards, recommended practices and guides for such criteria;
Coordinate with other technical committees, groups, societies and associations as required.

CHAIR	VICE CHAIR	SECRETARY
Ajith M. Varghese SPX Transformer Solutions, Inc. 400 S. Prairie Avenue Waukesha, WI 53186-5969, U.S.A. Phone: +1 262 547 0121 Ext. 1343 Phone: +1 262 442 7197 email: ajith.varghese@spx.com	Thang Hochanh Consulting Tests Services HV Apparatus & Power Transfs. and Distr. Transfs. Tests Laboratory 149 Godin Sherbrooke (Qc) Can J1R 0S6 Phone: +1 819 821 3636 x 244 Phone: +1 514 796 3697 email: thanghochanh@surplec.com	Dr. Poorvi Patel EPRI 1300 West WT Harris Blvd Charlotte, NC, 28262-7097, U.S.A. Phone: +1 704 232 4551 email: ppatel@epri.com

SC AGENDA/TOPICS FOR NEXT MEETING

Spring 2021 SC Agenda 25Apr2021
Spring 2019 Presentation 22Apr2019
Spring 2018 Presentation on Guide for Frequency Domain Spectroscopy Measurement of Bushings for Transformers 28Mar2018
For previous meeting minutes, see Transformers Committee Meetings

PREVIOUS MEETING DISCUSSIONS/TOPICS

Spring 2017 Presentation – Field Guide for Partial Discharge Measurement 13Mar2017, PAR Request 13Mar2017
Fall Presentation – Impulse Test Concepts, Phil Hopkinson 27Oct2016

WORKING GROUPS/TASK FORCES

Standard	Title	Officers	Status	Drafts	Documents
C57.98 WG	IEEE Guide for Transformer Impulse Tests	Chair: Thang Hochanh Phone: +1 819-821-3636 thanghochanh@surplec.com Vice-Chair: Reto Fausch Phone: +1 949-374-9601 retofausch@ieee.org Secretary: John Foschia Phone: +1 919-273-7411 John.Foschia@spx.com	Active Approved 2011 PAR Exp. 2022 Rev Due: 12/31/2021	.	Fall 2020 Agenda 19Oct2020 Fall 2019 Minutes 19Oct2020 K-Factor 19Oct2020
C57.113 WG	IEEE Guide for Partial Discharge Measurement in Liquid-Filled Power Transformers and Shunt Reactors	Chair: Ali Naderian Phone: +1 647-300-8836 ali.naderian@metsco.ca> Secretary: John Foschia Phone: +1 919-273-7411 John.Foschia@spx.com	Active Pub. 2010 Rev Due: 12/31/2020 PAR Exp. 2021	.	Fall 2018 Presentation 17Oct2018
C57.127 WG	IEEE Guide for the Detection of Acoustic Emissions from Partial Discharges in Oil-Immersed Power Transformers	Chair: Detlev Gross Phone: 011 49 241 74927 gross@pdix.com Vice-Chair: Jack Harley Phone: +1 330-242-0046 jack.harley@FirstPowerGroup LLC.com	Inactive Approved 2018 Rev Due: 12/31/2028	.	.
C57.138	IEEE Recommended Practice for Routine Impulse Test for Distribution Transformers	Chair: Art Molden Phone: +1 845-225-0993 a.molden@ameesco.com Vice-Chair: JD Brafa Phone: +1 731-696-5240 brafa@engineer.com	Inactive Rev Due: 12/31/2028 .	.	.
C57.160 WG	Guide for PD Measurement in HV Bushings and Inst Transformers	Chair: Thang Hochanh Phone: +1 819-821-3636 thanghochanh@surplec.com	Active 95% New Project PAR Exp.: 12/31/2020	PC57.160 D7 25Oct2017	Fall 2017 WG Agenda 25Oct2017 Spring 2017 Unapproved Minutes 25Oct2017 Fall 2016 Unapproved Minutes 25Oct2017
PC57.161 WG	Guide for DFR Measurements	Chair: Ali Naderian Phone: +1 416-797-3724 a.naderian@gmail.com	Inactive Rev Due: 2026	. .	. . . .
C57.168 WG	Guide for Low Frequency Dielectric Testing for Distribution, Power and Regulating Transformers	Chair: Dan Sauer Phone: +1 262-896-2417 DanielMSauer@Eaton.com	Active PAR Exp.: 12/31/2022	.	Fall 2018 WG Agenda 27Sep2018
C57.12.90 Continuous Revision TF	Revision of Low Frequency Tests	Chair: Bill Griesacker Phone: +1 412-916-6446 wgriesacker@duqlight.com	Active – Cont.	.	Spring 2021 TF Agenda 7April2021 Fall 2020 Unapproved Minutes 7April2021 Survey 1 Results Summary R2 23Apr2021 Spring 2020 Survey 1 Results Summary 10Mar2020 Fall 2019 Core Gassing Proposal 17Oct2019 Bushing PD Statement 5Oct2018 Proposed Rev: 10.8.2 for pressure during Induced Test 17Mar2016 Proposed Rev: Tap Changer Position during Induced Test 17Mar2016 Single-Phase Test Circuit – HV Delta 17Mar2016
C57.12.90 Continuous Revision TF	Continuous Revision of Impulse Tests	Chair: Pierre Riffon Phone: +1 450-448-8778 riffon@sympatico.ca	Active – Cont.	.	.
C57.12.200 Entity Ballot Oversight TF	IEEE Guide for Frequency Domain Spectroscopy of Bushings for Transformers	Chair: Poorvi Patel Phone: +1 704-232-4551 ppatel@epri.com Vice-Chair/Secr: Charles Sweetser Phone: +1 617-901-6180 charles.sweetser@omicronenergy.com	Active	.	Fall 2019 Agenda 23Oct2019 . .
TF	Investigate Interaction between Substation Transients And Transformers in HV and EHV Transients	Chair: Jim McBride Phone: jim@jmxhv.com	Active	.	. . . .
TF	Factory Partial Discharge Limits	Chair: Vinay Mehrotra Phone: vinay.mehrotra@spx.com	Active	.	. . . .
TF	External Dielectric Clearances	Chair: Eric Davis Phone: +1 816-822-3925 edavis@burnsmcd.com	Active	.	C57.12.00 Table 4 19Oct2012 Previous Mtg Docs Survey Results 03Mar2012 Table 13 – Ph-Ph Clearance History 330kB CAN/CSA -C88-M90, Table 6, External Clearances in Air 330kB Background from Dielectric Test Subcommittee Minutes on Subject of Phase to Ground Clearances, S99 35kB May 2003 NESC Table 124-1, Fig. 124-1 (108 kB) May 2003 NESC 1993 Clearance Ref. pages (569 kB) May 2003 PH-GND Electrical Clearances Comparison Charts Rev. 3 (71 kB) May 2003 PH-GND Electrical Clearances Comparison Tables Rev. 3 (21 kB) May 2003
TF	Partial Discharge Tests for Class I Transformers	Chair: Donald Ayers Phone: +1 704-243-3222 donald.ayers@ieee.org Vice-Chair: Javier Arteaga Secretary: Israel Barrientos	Active	. .	Spring 2021 Agenda 22Mar2021 Spring 2021 Mtg Slides 3May2021 Spring 2021 Minutes – Unapproved 19May2021 Fall 2020 Presentation 10Oct2020
TF	Winding Insulation Power Factor & Winding Insulation Resistance Limits	Chair: Diego Robalino Phone: +1 214 331 7348 diego_robalino@ieee.org	Active	. .	Fall 2020 Presentation-Data Set 29Dec2020