Check Points & Quality Screening for Glass & Other Insulators

June 22, 2018 • ARTICLE ARCHIVE, Glass, InsulatorsComments Off on Check Points & Quality Screening for Glass & Other Insulators

Increasing demand for overhead transmission line components such as insulators has brought into the market new, previously often unknown suppliers. This has created a large spectrum of performance and quality that are not necessarily easy to identify relying only on existing standards or specifications. This is true for all insulator technologies. End user...

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Insulator Design, Standards & Operating Parameters

June 16, 2018 • ARTICLE ARCHIVE, Insulators

According with IEC-60050-471, an insulator is: “a device intended for electrical insulation and mechanical fixing of equipment or conductors which are subject to electric potential differences”. An insulator is therefore a mechanical support. Once that...

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Materials Toward Development of Insulators of the Future

June 15, 2018 • ARTICLE ARCHIVE, Insulators

A common industry goal these days is that a growing proportion of energy supply will come from renewable energy sources such as hydro power, wind energy, solar energy as well as tidal and wave energy. At the same time, the power systems will have to become...

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Strength Requirements of Braced HV Insulator Assemblies

June 9, 2018 • ARTICLE ARCHIVE, Insulators

Braced insulator assemblies are a type of armless construction for transmission line designs introduced when the first HV horizontal line posts were installed over 50 years ago. Minimum clearances for conventional line construction, such as using a vertical...

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Line Uprating with Composite Insulators

June 9, 2018 • ARTICLE ARCHIVE, Insulators, Wisdom on Overhead Lines

Because of increasing difficulties in securing approvals for new transmission corridors, various new technologies for line uprating have been developed and are now being implemented. The basic idea is to use existing line corridors to transfer more power. One...

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Sampling Based Maintenance: Assessing Condition of Composite Insulators After Years of Service

June 1, 2018 • ARTICLE ARCHIVE, Insulators, Maintenance

With their growing popularity as the insulator of choice for many line projects throughout the world, the ideal inspection program for silicone insulators has become a hot topic. This is particularly the case since, even after years of investigating...

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Shielding Electrodes for AC & DC Line Insulators

May 12, 2018 • Insulators

Shielding electrodes of different form are usually foreseen and specified for AC lines with 3 main purposes: To eliminate corona from insulator fittings (i.e. a corona shielding function); to grade the voltage potential along the string in order to limit the...

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Insulator End of Life: Recycling vs. Disposal

Insulator End of Life: Recycling or Disposal

May 12, 2018 • ARTICLE ARCHIVE, Commentary by Pigini, Insulators

The focus when it comes to electrical products and components has traditionally been on quality and performance in service. Increasing public awareness of environmental issues, however, has now led both manufacturers and users to pay greater attention to the...

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