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Evaluating Reliability of Bushings & Related Case Histories

Evaluating Reliability of Bushings

August 11, 2018 • ARTICLE ARCHIVE, BushingsComments (0)

Resin-impregnated paper (RIP) bushings are an established solution for many applications. Although such bushings are often referred to as ‘maintenance-free’, some of their parameters must still be monitored prior to putting them into service and also on a regular basis thereafter. Moreover, evaluating their reliability requires understanding certain...

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RIS Bushing Technology: Reliability Testing & Field Experience

July 28, 2018 • ARTICLE ARCHIVE, Bushings, Testing

Problems with bushings are one of the leading causes of transformer failure and that means their proper selection can significantly impact transformer and substation safety. Traditional bushing technologies such as oil-impregnated paper bushings (OIP) and...

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Using Dielectric Frequency Response to Assess Bushing & Instrument Transformer Insulation

July 21, 2018 • ARTICLE ARCHIVE, Bushings

Modern technology in signal acquisition and analysis techniques has provided new tools for transformer diagnostics. Of particular interest are dielectric response measurements where insulation properties of oil/paper systems can be investigated. Dielectric...

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Optimizing Safety of HV & UHV Bushings

July 7, 2018 • ARTICLE ARCHIVE, Bushings

Safety is an important factor in the power industry due to the consequences and risks of injury from catastrophic failures of electrical equipment. This aspect must therefore always be taken into account during design – even at the inception of product...

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Methods to Enhance Safety & Increase Reliability of Bushings

June 29, 2018 • ARTICLE ARCHIVE, Bushings

Most countries have product safety laws and nonfulfillment can expose a manufacturer to liability apart from being detrimental to reputation. Those found responsible for an incident can even be prosecuted and held personally liable. While consumer products...

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Composite Bushings with RTV Coatings Combat Pollution at Substation in Israel

June 2, 2018 • ARTICLE ARCHIVE, Bushings, Utility Practice & Experience

The power system in Israel operates in a sub-tropical as well as desert environment. A long dry season lasts some eight months during which all types of contaminants – from marine to dust to industrial and agricultural – accumulate on insulators. This...

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Development of Bushings for Seismic Conditions

May 26, 2018 • ARTICLE ARCHIVE, Bushings

Many regions are exposed to severe earthquakes that generate dramatic consequences in the way of loss of life and destruction to infrastructure. Since these events can neither be predicted nor prevented, the focus is on mitigation.                ...

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Transformer Bushing Reliability Survey & Risk Mitigation Measures (Part 2 of 2)

February 17, 2018 • ARTICLE ARCHIVE, Bushings

Statistics show that bushings are one of the main contributors to transformer failure. Their failure therefore has huge impact on reliability as well as safety of the system and operators managing the asset. With this in mind, major utilities in southeast...

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