Power Transformers Articles

  • Join me at Autodesk Accelerate 2018 experience in Toronto

    The Accelerate with Autodesk event is September 19th and 20th and is for those interested in the future of design and manufacturing. The early bird rate is only $49 until June 15, 2018 for 2 days of sessions. You will also get a bonus tour of the MaRS Discovery District which is the world’s largest urban innovation hub and where the new ...


    By Autodesk, Inc

  • 2500 and 3000 kVA Padmounts to Jamaica!

    Check out these 2500 and 3000 kVA padmount transformers we just manufactured for a specialty utility project in Jamaica! Designed with 3 high voltages and dual low voltages, with taps on all reconnectable primaries, these units are a great example of VanTran’s ability to manufacture custom units to our customers’ exact specifications. While VanTran typically manufactures transformers ...


    By VanTran Industries, Inc

  • VanTran Replaces Old Transformers to Exact Specifications

    Check out these 2500 kVA Substation Transformers that left our factory earlier this week! Manufactured for a Polyurethane chemical producer in Louisiana, these transformers were built as direct replacements for two units the customer had on site. Given a strict delivery date of November 1, and strict dimensions to maintain, VanTran accepted the challenge and built both units to precise retrofit ...


    By VanTran Industries, Inc

  • VanTran Keeps our Delivery Promises!

    Check out this 2500 kVA substation that left our factory this week! When the customer came to us in late August saying they needed a transformer and needed it on site no later than October 12, we jumped at the challenge! While a 6-week lead time would be cutting it close for most, VanTran’s mission is to manufacture the highest quality transformers for our customers on-time, every time. So, ...


    By VanTran Industries, Inc

  • 5000 kVA Multi-Tap Substation: A VanTran Signature Product!

    A VanTran signature product, the last week in September, we had a 5000 kVA multi-tap substation transformer leaving our facility. Earlier this summer, when power lines were accidentally cut on the coast of North Carolina, one of our loyal rental power customers supplied a VanTran Multi-Tap Substation they had in their rental fleet to help assist in getting power back up and running. Because the ...


    By VanTran Industries, Inc

  • Did you know VanTran manufactures standard transformers in addition to specialty units? And our lead times are great!

    Leaving our factory this week we have this 1500 kVA Padmount Transformer. Shipping to Pennsylvania, this transformer is a standard dead-front, loop-feed unit with DOE 2016 Compliant Aluminum windings. While VanTran often prides ourselves on our ability to jump at engineering challenges others might shy away from, we also have a long history of supplying our customers with the highest quality ...


    By VanTran Industries, Inc

  • How to measure the direction of current harmonics?

    If the generation side of the point-of-common-coupling (PCC) is essentially an islanded setup consisting of a few specific generators, then the amount of harmonics resulting from the generation "source" can be readily identified in a mathematical fashion from the relative impedance on the generation side of the PCC compared to the combined impedance on the load side of the PCC. (The source of ...


    By GoHz Inc

  • Transformer Oil Hydrotreating case study

    Hydrogenation of waste transformer oil (electrical insulating oils) can produce an oil product that is far better in quality and yield in comparison with fixed bed clay adsorption or reaction with sodium metal. This is proven at Sequoia- client’s facility in Midwestern USA. The 5 million gallon/year throughput naphthenic oil hydrotreater produces oil free of PCBs (polychlorobiphenyls ...


    By Sequoia Global, Inc.

  • On-site regeneration of transformer oil

    Regeneration of transformer oil at the transformer’s location is an important preventive measure of transformer servicing.   Transformer life time is, in essence, the life time of its insulation system. The most widely used insulation is liquid insulation (transformer oils) and solid insulation (paper, i.e. cellulose insulation). The oil provides for at ...


    By GlobeCore GmbH

  • Transformer oil quality control

    It is impossible to ensure reliability and longevity of energy systems without controlling the quality of transformer oil. Recent experience shows that approximately 30% of transformer oil, filled in power transformers, has deteriorated to the point when it becomes a risk factor. This is caused both to natural degradation of oil in operation due to thermal oxidation aging, and contamination with ...


    By GlobeCore GmbH

  • Time to replace your transformer?

    Modern oil transformers are not the strongest part of the connection between energy producers and consumers. Transformers have no moving or friction parts, their efficiency of voltage transformation is close to 99%, therefore their life time extends, or rather can be extended well over several decades. Extending transformer lifetime is the one and only most important strategy ...


    By GlobeCore GmbH

  • Why regenerate transformer oil?

    Article contain the information about the most important definition in transformer oil treatment. Its include terms such as transformer oil regeneration, insulation oil regeneration, purification of oils, degassing of oil, oil treatment, filtration by Fuller's earth, desludging, etc.  Regenerating the oil or other insulating medium in a transformer is probably one of the few environmentally ...


    By GlobeCore GmbH

  • Analysis of the conditions of use of the high-frequency power transformer and design principles

    According to the conditions of use of the high-frequency power transformer (transformer manufacturers) analysis, the overall two-fold: the feasibility and electromagnetic compatibility. Only pay attention to the feasibility of environmental protection awareness, must pay attention to electromagnetic compatibility. Feasibility refers to the specific conditions of use, high-frequency power ...

  • Real and complex models of multi–phase permanent magnet synchronous motors

    This paper deals with the modelling of multi–phase permanent magnet synchronous machines (PMSM) with an arbitrary number of phases and arbitrary shape of the rotor flux. The aim of the paper is to propose new dynamic models for the multi–phase electrical machines based on the use of real and complex state space transformations which are invariant with respect to power. The dynamic models of the ...


    By Inderscience Publishers

  • Entrepreneurship, competitive strategies, and ascending global brands from Taiwan: lessons for emerging markets

    Emerging markets' growing weight in the world economy poses the necessity for our understanding of the growth strategy of their firms as the extant studies are mostly based on advanced economies. This paper shows that Taiwan's entrepreneurs first engage in practicing original equipment manufacturing (OEM) for multinational corporations (MNCs) of advanced countries in the early stage of economic ...


    By Inderscience Publishers

  • Difference between Frequency and high-frequency forklift

    First, the difference between the high frequency and power frequency Workers Electric Reach Truck charger power devices operating in the linear state, which means he used up the power device is always at work, and therefore would result in low efficiency of his work, generally in the range of 50% to 60%, have to say he is good linear ...

  • Regression analysis for insulation failures in transformer windings

    The winding insulation system is the main component of power transformers. If there is any failure in winding insulation will have a crucial impact of the energy system operation. Insulation failure is the predominant part of faults and highest risk for all types of transformer failures. Most of the winding insulation failure is primly due to partial discharge. Partial discharge identification is ...


    By Inderscience Publishers

  • Speed control with maximum power transfer property of induction motors based on I/O linearisation

    This paper discusses the power transfer from the stator part to the rotor part of an induction motor and then summarises the maximum transfer property as a result. On the other hand, this paper also designs a speed controller which is developed under a special non-linear coordinate transform with maximum power transfer property such that the speed control objective can be fulfiled. Besides, this ...


    By Inderscience Publishers

  • Modelling oil degradation in electric transformer oil under typical loads

    In testing transformer oils for durability, it is desirable to use typical transformer operating conditions with appropriate allowances for factor of safety against temperature and voltage. The kinetics of degradation of used type II transformer oil with original flash point of 148?C, pour point of 51?C, and water content of 4 ppm was investigated. Assuming that the oil temperature in models Pr01 ...


    By Inderscience Publishers

  • Global product development in the ceramic tiles industry

    This paper describes the product development activities of a manufacturer of ceramic tiles based in Melbourne, Australia. The company, Johnson Tiles Australia (JTA), is part of the Norcros Group of companies that is one of the leaders in the design and manufacture of wall and floor ceramic tiles. The paper describes how JTA transformed itself from a purely manufacturing and sales organisation ...


    By Inderscience Publishers

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