Wrate, G. T. (2019, June), Teaching Power Transformer Testing to Undergraduates  Paper presented at 2019 ASEE Annual Conference & Exposition , Tampa, Florida. 10.18260/1-2--33352

\bibitem{asee_peer_33352}
  Wrate, G. T. (2019, June), \emph{Teaching Power Transformer Testing to Undergraduates}
  Paper presented at 2019 ASEE Annual Conference \& Exposition , Tampa, Florida.
  10.18260/1-2--33352

Glenn T. Wrate P.E..  "Teaching Power Transformer Testing to Undergraduates".  2019 ASEE Annual Conference & Exposition , Tampa, Florida, 2019, June.  ASEE Conferences, 2019.  https://peer.asee.org/33352 Internet.  23 Apr, 2024

\bibitem{asee_peer_33352}
  Glenn T. Wrate P.E..
  "Teaching Power Transformer Testing to Undergraduates".
  \emph{2019 ASEE Annual Conference \& Exposition , Tampa, Florida, 2019, June}.
  ASEE Conferences, 2019.
  https://peer.asee.org/33352 Internet.  23 Apr, 2024

@INPROCEEDINGS{asee_peer_33352
author = "Glenn T. Wrate P.E."
title = "Teaching Power Transformer Testing to Undergraduates"
booktitle = "2019 ASEE Annual Conference \& Exposition "
year = "2019"
month = "June"
address = "Tampa, Florida"
publisher = "ASEE Conferences"
note = {https://peer.asee.org/33352}
number = {10.18260/1-2--33352}
}

TY  - CPAPER
AB  - Many educational electrical power laboratories do not have access to utility-sized three-phase and single-phase power transformers, voltage regulators, and utility-grade instrument transformers.  At XXX, a utility consortium has donated a 2500-kVA, three-phase, General Electric, 32.8-kV – 2,400-V, grounded wye to delta, type OA-T transformer; a 333-kVA, single-phase, McGraw-Edison, 34.4kV – 277-V, type OA transformer; five voltage regulators, and several current and potential transformers.  With test equipment obtained from a grant from the Department of Energy (DOE) and other equipment donated by local industry, the students perform insulation resistance, transformer turns ratio, oil breakdown, and power factor/dissipation factor testing on these transformers.  These tests are in addition to the standard laboratory tests performed on small transformers to determine polarity, turns-ratio, equivalent circuit parameters via open- and short-circuit tests, and voltage regulation.  This paper will discuss the problems encountered running these tests with undergraduates, including safety concerns.  It will also discuss the students’ interactions and their impressions of the testing, and look at methods to evaluate how well they learned the testing methods and the transformer operational concepts.
The tests on the large power transformers are performed in this order: 1) a Megger MIT525 is used to perform the insulation resistance and polarization index tests, 2) a Megger TTR-320 is used to perform the transformer turns-ratio tests, 3) a Megger OTS 60 PB or Hipotronics OC-60-A portable oil tester is used to perform a breakdown voltage test on the oil from a Hampden H-OFT-180 oil-filled transformer trainer, and 4) a Megger Delta 3000 is used to perform the power factor/dissipation factor tests at 10 kV.  In addition to learning how to use the test equipment safely, the students must also learn the software to run the tests and collect the data. It is hoped that this paper provides insight into testing large power transformers and suggestions for others who are interested in teaching these tests.

AU  - Glenn T. Wrate P.E.
CY  - Tampa, Florida
DA  - 2019/06/15
PB  - ASEE Conferences
TI  - Teaching Power Transformer Testing to Undergraduates
UR  - https://peer.asee.org/33352
DO  - 10.18260/1-2--33352
ER  -