Transformers Magazine Vol. 8 issue 4
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Editorial Message
Dear readers,
I would like to start this message expressing my gratitude to our readers who are continuously supporting us. This support is particularly reflected in a recent survey on the best magazines in the transformers industry, conducted by Virginia Transformer Corp, where we have received a huge support with 73 % votes. This has really impressed us, although it is consistent with the support that you give us continuously subscribing to the magazine. We have over 90 % paid subscribers, despite the fact that you can read over 90 % of our content for free, and apparently this is very unique in the publishing business. We see this recognition as an obligation to continue on this course with even greater devotion and passion, and we are fully committed to the task.
TESSA® – ASSET LIFECYCLE SOLUTIONS
The challenges for our electricity grids are continuously growing.
Research and development of ester filled power transformers
Ester based insulating liquids are manufactured from natural resources such as vegetable oils or synthetically by reacting alcohols with acids.
JAN PRINS Chief Executive Officer of Ganz Transformers and Electric Rotating Machines Ltd.
Ganz Transformers and Electric Rotating machines Ltd. was built on the foundations that the three renowned inventors, Miksa Déri, Ottó Bláthy and Károly Zipernowsky
DC partial discharge testing on transformers and bushings, OMICRON Energy Solutions
For at least the past two decades, high-voltage HVAC partial discharge (PD) measurements have typically been performed on power transformers and bushings
What is the probability of a power transformer breakdown when repeating dielectric tests?
The question raised in the title of the article became very relevant in the 1980s for ZTZ, when the number of power transformers produced for foreign customers increased sharply.
Joško Papić Head of Quality Control Department at Končar D&ST
Končar D&ST is a manufacturer of distribution, special as well as small and medium power transformers.
TOTUS – total transformer monitoring
DGA is typically used to detect discharge of high energy (D2), with Acetylene being the primary marker.
Transformer oil sampling – a dirty and dangerous mission
As in medicine, the sampling process importance and particularities are related to the sampling from transformers or other machines.
“Transform it chromium-free”: environmentally friendly coatings for grain-oriented electrical steel
Three years have passed since the sunset date of 21 September 2017 for chromium trioxide and its derivatives in the EU.
Books on power transformers in Russian – A bibliography 1969 – 2017
By 1970s, transformer technology reached the mature stage in Russia, which is evident from the literature topics
Axciss Group, the French company that is shaking up the electromechanical equipment sector
In the face of the climate emergency, the world has no choice but to close - as quickly as possible - the sequence of fossil fuels.
Investigating cost-benefit analysis for digital distribution transformers – Part II
Installation of the monitoring system or adding digital features to the distribution transformer fleet may seem like an unnecessary cost.
Commissioning of current transformers
Current transformers are the link between the primary and the secondary system and are therefore essential components of the electrical energy system.
Aluminium transformer vs copper transformer: A technical and economic comparison
The possible applications for dry-type transformers are multiple and versatile.
Retrofitting of a 420 kV draw-lead type bushing with a draw-rod type – Part II
On observation of deterioration of tan-δ value to 1.02 %, i.e., surpassing the limiting value of 0.7 %, as defined in IEC 60137, of the 420 kV OIP bushing...
