Friday, February 23, 2018
OPTIONAL LABORATORY SEMINAR
Included as part of the Three-Day Maintenance Program (no additional cost).
Available as an add-on to the traditional Transformer Professional Program.
Registration & Information Desk Open
Transformer Condition Assessment Using Laboratory Diagnostics
Doble Engineering Company
David Koehler, Technical Manager, Doble Insulating Materials Laboratories
Paul Griffin, Vice President Global Professional Services
Melissa Zajac, Senior Manager – US Laboratory Operations
Harry Heulings, Senior Chemist
Water in transformer oil—Assessing how dry a transformer is requires more than a water in oil test. Learn how to assess the wetness of the transformer insulation system and why you need to know the operating temperature at the time of sampling. This session discusses water migration in transformers and how water affects the ability to overload them. Examples are provided.
Condition assessment of cellulosic insulation—The analysis of the condition of the paper insulation has changed quite a bit in the past 10 years. Learn how the solid insulation ages and how to assess the condition of the paper and pressboard insulation and its remaining life. Case studies are given to illustrate the distribution of paper aging in transformers and how operation and maintenance can influence it.
Metals in oil—This presentation provides an understanding of the importance of metal-in-oil tests as a diagnostic. To be able to use the information, the correct test must be specified—learn the difference between dissolved and particulate metals and when to choose each test. Case studies are given.
Quality of new and service aged oils—Background information is provided on the properties of transformer oil. The presentation includes how to specify and evaluate new oils, what tests to perform and how to evaluate in-service oils.
Aging characteristics of insulating materials—Aging is discussed in sections on oil and paper which provides information on how to increase the life of transformers. There are a number of factors that accelerate the aging of the insulation system that can be controlled. This session provides information on when to reclaim or replace oil and gives specifications for reclaimed oil.
Load tap changer and oil circuit breaker diagnostics—This presentation gives the latest information on diagnostics for load tap changers (LTCs) and bulk oil breakers. Case studies are provided.
Sampling—The presentation discusses how to save money on your sampling program through proper training and what common pitfalls to avoid. Proper sampling preparation, practices, and equipment are given.