Continuing our practice to share new information with our customers and distributors in a timely manner, DV power is organizing its next “Everything that’s good to know” session on 22-24th March 2017 in Stockholm. Our experts will provide information on our new products, their advantages over the competitors’ devices, share with you with interesting “use case” examples and make you familiar with efficient test result analysis methods. In addition, the hands-on session will provide you with valuable experience on using our instruments. The session will cover our existing and new products from the transformer, switchgear as well as battery testing devices portfolios.
The training includes:
The participation is free of charge.
PLEASE BE AWARE THE NUMBER OF PARTICIPANTS IS LIMITED TO 12!
The training will take place only if a minimum number of registrations are reached.
All sessions will be conducted in English language in DV Power offices located at Stockholmsvägen 18 (2nd floor) Lidingö, Stockholm.
DV Power can assist you with the hotel reservations.
DV Power can assist you with pick-up service at the airport.
If you need assistance, please send an e-mail to firstname.lastname@example.org with all the information related to your trip (flight number, date, time and airport of arrival and departure).
Tap Changer College
DV Power is proud to announce our traditional “Tap Changer College“. The 2-day event takes place in different city each time to promote DVtest method, and learn of tap changer principles of operation. All this in order to provide users a new tool for condition assessment of OLTCs. Several topics related to on-load tap changer testing and maintenance will be presented by the experts from DV Power, ABB, TJ/H2b and local utility during these conferences. If you are interested in attending, please contact email@example.com for more info about registration.
An introduction to On-Load Tap-Changers covering the operating principles, regulating and transformer windings connections, OLTC styles, conventional arcing in oil and vacuum technology including the corresponding operational sequences.
This training session will elaborate on condition diagnosis of electrical contacts of tap changers using DVtest (Dynamic tap changer recording). Principles of the method and positive / negative aspects of various testing procedures. DC testing power transformers requires special approach. Demagnetization and saturation using high current or both windings explained. Synchronization between phases, stabilization, shorting, runaway.
While DGA will be discussed to identify the type of OLTC issues, the DVtest method can identify and locate contact wear and defects on OLTC’s which will be demonstrated and explained. Oil vs vacuum tap changer signatures in DGA – key gasses, ratios, and source of gassing.
This training session will shed light onto detailed analysis of resistance/reactance tap changer operation, its various contact motion principles, and analysis of DVtest graphs. Tap changer failure modes, and how to detect it before it becomes a disaster will be addressed along with case studies. DV Power has been collecting this experience for the last 5 years.
Older types of tap changers now require upgrades or overhaul, prioritizing this task can be accomplished using DVtest procedure accompanied with powerful data analysis. Attending TC College will give you an excellent tool and knowledge to perform condition assessment of OLTCs.