The MIDEL family of transformer liquids comprises MIDEL eN 1215, MIDEL eN 1204 and MIDEL 7131. The “eN” prefix denotes natural esters, which are formulated using renewable base oils from different seed crops, whilst MIDEL 7131 is a synthetic ester fluid.
Read MoreMidel eN 1204 and MIDEL 7131 are robust ester fluids. Studies have demonstrated their long term stability, even at elevated temperatures. As with all dielectric liquids, it is necessary to take precautions when handling and storing MIDEL fluids to ensure that they are kept in optimum condition.
Read MoreCorporations and institutions are under increasing pressure to ensure their activities cause as little damage as possible to the environment. Embracing this concept of Corporate Social Responsibility can provide such entities with an improved public image and cost advantages associated with opting for a greener business model.
Read MoreMIDEL 7131 and eN 1204 are robust fluids capable of giving long service, even in the most demanding of applications. As with mineral oil, in order to ensure that MIDEL fluids give continued good service it is possible to monitor a number of the fluid parameters throughout the life of the transformer. Testing the fluid also has the added benefit of picking up any potential problems with the transformer before a failure occurs.
Read MoreTransformers present a key challenge for risk managers and insurers. This whitepaper explores the effects of increased demands on the power transmission and distribution network. It looks at how the energy insurance industry can manage the risks presented by transformers through a strategic asset management plan, and how the use of ester-based dielectric fluid can help to minimise impact on the market.
Read MoreThis whitepaper examines the risks to power and distribution transformers, and how power utilities can minimise the impact of unplanned outages caused by failure of this critical equipment
Read MoreThis whitepaper examines the risks posed by increasing demand for electricity on power and transmission networks, and looks at how ester transformer fluids can help safeguard assets in urban environments into the future.
Read MoreWe get lots of questions on Ester Fluids… Especially when it comes to retrofilling transformers. That’s why we’ve put this guide together on the top 15 questions (and answers) – to help organisations better understand the challenges and possibilities of retrofilling with ester and to assist them to make investment decisions with greater certainty.
Read MoreInsulect have an FCAS conformance monitoring solution that is operating in numerous monitoring applications across the power system.
Read MoreThis paper summarises a testing exercise carried out by a utility, a Phasor Measurement Unit (PMU) manufacturer and a developer of systems and applications to qualify the PMU for use in applications of interest for transmission system security and optimisation.
Read MoreTransformers are one of the most critical assets within an electricity network. Effective management of these assets – from initial specification, to online monitoring, maintenance and eventual replacement – is an increasingly complex task with costly implications.
Read MoreNetwork planning is a complex process. It involves dealing with many unknowns and uncertainties, usually with a fixed pool of money to further complicate decision making. And of all the assets to plan for, transformers are one of the most important and unpredictable.
Read MoreThe GCC Interconnection Project has connected the electricity grids of six Arab Gulf countries along the Gulf to share power, reduce overall spinning reserve, reduce need for installed generation capacity for reserve, provide support during emergency and black out situations, and offer opportunities to trade energy with other regions.
Read MoreAs part of acceptance tests on new units, the temperature rise test is intended to demonstrate that, at full load and rated ambient temperature, the average winding temperature will not exceed the limits set by industry standards. However the temperature of the winding is not uniform and the real limiting factor is actually the hottest section of the winding commonly called winding hot spot.
Read MoreIt is shown that in case of rapid load change, the methods used by classic WTI can indicate a lower temperature by more than 10°C even if they are properly adjusted for the steady state conditions. It appears that with the dependability of modern fiber optic sensors, the long-term performance of transformer cooling can be better achieved with these more accurate monitoring devices.
Read MoreThe first experiments that set the principles of the UHF technique of detecting partial discharges in gas insulated substations (GIS) were made 21 years ago, when the substation failure rate was higher than now and no satisfactory means of detecting defects in them was available.
Read MoreThe objective of this paper is to explain how to measure the most important parameters and to give a little outlook how this standard might evolve and effect the way you need to measure Power Quality.
Read MoreThis paper endorses the monitoring of SF6 gas to help identify leakages and possible changes in moisture content at an early stage, then track and compare over time.
Read MoreWith the increasing amount of wind power generation connected to the power grid, the importance of measuring the wind turbines’ power characteristics and power quality characteristics is growing.
Read MoreThis paper reviews the development of overhead line fault locators based on traveling wave techniques and provides examples of use in transmission systems.
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