Preventing Failure
Selection of the Circuit Breaker has to be done carefully, so that it does not allow the transformer to exceed the permissible winding temperature. The built-in Bi-metallic strips mounted in the Circuit Breaker, located below the top oil, achieve the temperature sensing function. The circuit breaker thus provides Thermal matching with the transformer & protects it against over loads... - C.V.Govinda Raju
Fault Level Role in Selection of Protective Equipment in Power System
Almost after a decade, US economy on rising trend, a very good news for all of us. India is also an emerging economy, where power sector has to play crucial role. - Aqeel Ahmad
A CASE STUDY: EFACEC
Carlos Carvalho, Director of Technology at EFACEC, discusses the benefits of software modelling in the design and test of transformers.
Smart Transformers for Energy Sector
The smart transformers are used to provide additional flexibility to control power distribution networks, thereby, facilitating the smooth conversion of AC to DC and DC to AC, as per requirement. Smart transformer caters to a wide variety of applications, ranging from alternative power generation to traction locomotives, power grid and electric industries, and others…
Looking At The Transformer Kraft Paper
In the construction of a transformer, the most vulnerable is the paper insulation. The paper insulation begins to degrade from the day of installation. In this article, the importance of kraft paper and its process of manufacturing such as preparation, wet washing, pulping, screening, cleaning, refining, blending etc., have been presented… - Vishavdeep Jindal, Jashandeep Singh
Transformer condition assessment with an integrated test van
Commissioning tests and periodic on-site maintenance checks are essential for the safe and outage-free operation of power transformers and substations. A combination of routine...
Effect of TRANSFORMERS Saturation
A transformer can incur in core saturation conditions in either of the following cases:
When operating above rated power
...
Dielectric Technology in Transformer
Utilities and transformer manufacturers focus on the design and manufacture of environmentally-friendly transformers that are nonhazardous while offering improved life cycle costs with minimal maintenance. These transformers offer reduced carbon footprint, reduced levels of pollution (water, soil, noise), enhanced lifecycle costs, enhanced product lifetime, and enhanced fire safety…
High Efficiency Distribution Transformers
Due to use of better grade materials and optimum design, sudden failures are reduced along with lower cost of maintenance, leading to increased life expectancy. These benefits add up and balance against the inevitable increase in purchase cost – as additional copper in the windings and better materials in the core will be used in the manufacture of high efficiency transformers... - S V Varadarajan
“Our priority has always been supporting OEMs”
"Our reputation is not only for fire safe, biodegradable transformer fluids, it’s one of partnership, collaboration and above all, technical competency among a peer-reviewed global community," shares Steve Jones, MIDEL Business Development Director, APAC.
Moving towards Sustainability
India is a diverse country in terms of people, landscape, and culture. This has had a profound effect on its politics, growth, and consumption...
Power Transformer Market worth US$ 29.91 Bn by 2020
The growth is due to the increase in HVDC transmission projects mainly in the Asia-Pacific region. HVDC, EHV, and UHV projects being undertaken for reducing transmission losses during transmission over large distances is the major growth driver of the large power transformer market.
Easing Multi-function Testing
There is only one instrument to unpack, power up and configure; the same cable set is used for a whole range of measurements, so the connections only need to be made once; and, when carrying out a range of tests, users of multifunction instruments move quickly and easily from app to app, rather than having to go from instrument to instrument... - Peter Fagerström
MAS Series Online Transformer Moisture Absorption System
Generator, transmission and distribution transformers are some of the most critical and expensive assets in a power network. - Setu Vora
Končar’s team certifies Nynas’ bio-based transformer fluid
Recently, Nynas has delivered its new bio-based transformer fluid NYTRO BIO 300X to Končar Distribution & Special Transformers in Croatia. Končar’s technical team in...
Transformers Noise Level Analysis & Reduction Techniques
The subject of deciding such as the most appropriate method and conditions for accurately measuring the noise level of a transformer has been discussed in this article...
Moving forward with tan-delta high voltage insulation testing
Though recent tan-delta test sets in the market, which are widely used to assess insulation in high-voltage electrical apparatus, combine versatility with convenience, there is room for further improvement. - Vince Oppedisano
Why Prequalification is becoming increasingly important
In order to select the new assets according to their technical feasibility before any pricing issues are evaluated, a prequalification process can be introduced that a manufacturer and their product have to undergo before applying for a tender.
Power to Protect Transformers
As the world’s 3rd largest producer of transformer oil, APAR has developed the right capabilities and expertise to deliver quality and timely service to...
Typical Phenomena in Transformers & Protections
An analysis of the current during an over excitation condition shows a predominant 5th harmonic component while analysis of inrush current shows a predominant 2nd Harmonic component. These characteristics help to differentiate an over excitation condition from inrush current condition. - Rajesh Chourishi
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