Six new members were added to the roster and introduced to the SC.

Transcription

1 ANNEX A Bushings Subcommittee March 23, 2016 Atlanta, Georgia USA Chair: Peter Zhao was unable to attend, therefore Eric Weatherbee filled in as Chair for this meeting Secretary: Eric Weatherbee, Keith Ellis filled in as Secretary for this meeting A.1 Opening of the Meeting A.1.1 Introductions The Chair opened the meeting with group introduction. A.1.2 Attendance Membership count was taken with the following results: 27 of 42 members were present with 82 total of 109 attendees. There were 8 new membership requests. There was a quorum. guests, for a A.1.3 Chairman s Remarks The Chair asked for a motion to approve the meeting agenda that was distributed prior to the meeting, a motion was made and seconded with no objections. The Chair asked for a motion to approve the S15 Memphis minutes that was distributed prior to the meeting, a motion was made and seconded with no objections. The Chair asked that guest s take careful consideration before asking for membership in the groups. There were a couple bushings meetings that did not have membership in attendance to have a quorum. Before asking for membership they should be confident in their ability to attend meetings regularly, as their absence can stymie progression of the entire group if a quorum cannot be formed. The Chair also reminded people to make sure their AM System information is up to date as there were a couple bounced back s when trying to distribute information to the members. Six new members were added to the roster and introduced to the SC. The Chair presented the Standards Status Report for bushings, see Appendix A. It was noted that an extension was granted for PC and that a new PAR was granted for Distribution Bushings, PC A.2 Working Group and Taskforce reports A.2.1 C Keith Ellis, Chair No Meeting was held. Mr. Ellis informed SC that the review group that was form at the last meeting had only supplied one suggested change for consideration. The Chair asked if there were any further comments or if any of the review group would like more time to complete the task. No comments were received and therefore he asked if there were any objections to setting this task as closed. No objections were made. A.2.2 WG PC Dr. Shibao Zhang, Chair; David Wallach, Secretary See complete minutes in Appendix B of this report. A.2.3 C Tommy Spitzer, Chair (not present) Prior to this meeting Mr. Anthony Natale brought forth an issue he is confronted with quite frequently. There is a contradiction between the Application Guide, C and the General Requirements and Test Standard, C The Guide states that bushings tested per are only rated for 55K rise transformer and therefore bushings used in 65K rise transformer need to be derated to account for the difference. However, the Standard states that bushings tested per the standard are rated for 65K rise transformers. This causes confusion among the OEMs and their end users. The Chair of the Guide, Mr. Spitzer, provided a statement that was shown to the SC, see Appendix C. In short, Mr. Spitzer stated that the Guide needs to be revised to correlate with the Standard and he will begin working on the next revision to the Guide next year.

2 A.2.4 WG PC Scott Digby, Chair; JD Brafa, Vice Chair; Secretary, Jim Campbell See complete minutes in Appendix D of this report. A.2.5 IEC/IEEE Les Rechsiedler (IEEE) and John Graham (IEC), Co-Chairs The first dual logo standard was approved June of 2014, as such no meeting was held. A.2.6 WG PC Distribution Transformer Bushings Steven Shull, Chair; Ed Smith, Vice Chair See complete minutes in Appendix E of this report. A.2.7 TF Composite Bushings John Graham, Chair; Secretary, Robert Middleton See complete minutes in Appendix F of this report. A.3 External Liaison Reports A.3.1 IEC Bushing Standards Activity John Graham, IEEE Liaison See complete minutes in Appendix G of this report. A.3.2 IEEE 693 Eric Weatherbee, IEEE Liaison There have been no new meetings or WG correspondence in regards to IEEE 693 as the Recommended Practice is being prepared for Ballot. Mr. Weatherbee had contacted The Chair of 693, Mr. Fujisaki, for any updates to be provided to the SC. Mr. Fujisaki stated that the Ballot is still on schedule for this year and was recently received back from word processing. A.3.3 WG PC Guide for PD Meas. in Bushings and Inst. Trans. Thang Hochanh, Chair See complete minutes in Appendix H of this report. A.4 Unfinished Business A.4.1 Partial discharge in bushings This issue was raised at the last meeting by a Transformer OEM in regards to PD that can develop during testing at OEM factories which lead to a lengthy discussion amongst the SC. The acting Chair informed the group that upon discussion with The Chair, Mr. Zhao, it was decided that the proper steps would be to pass the issue on to the Dielectrics Test group first which was done prior to this meeting. The Chair also noted that this area of coverage (OEM testing of bushings) is lacking, and this may be a good opportunity to start forming a document. If the Dielectrics and Test group does not wish to handle the issue the Bushing SC will make a decision on how to proceed. A.5 New Business There was no new business A.6 Adjournment 10:10 am Page 2 of 18

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