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Manufacturing Hollow Core Composite Insulators

June 22, 2018 • ARTICLE ARCHIVE, Hollow CoreComments Off on Manufacturing Hollow Core Composite Insulators

Market demand for hollow core composite insulators, long mired below industry expectations, started along a path of exponential growth about 15 years ago. Part of the reason for this was greater knowledge among end users of the benefits of this technology, particularly safety in the event of explosive failure. Another decisive factor has been a ...

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Preview of CIGRE 2018 General Session

June 22, 2018 • ARTICLE ARCHIVE, Reporting from CIGREComments Off on Preview of CIGRE 2018 General Session

A review of the program for the upcoming CIGRE General Session in Paris suggests record attendance, with more than 8000 participants expected from 93 countries. In addition, some 240 exhibitors will display new products, services and technologies over three...

Pole Designs Optimize Aesthetics, Feasibility & Cost

June 22, 2018 • ARTICLE ARCHIVE, Utility Practice & ExperienceComments (0)

In many countries, construction of new HV and EHV overhead lines has triggered divisive public debate, with particular resistance against the use of traditional lattice towers. In the face of this, one way to promote greater acceptance and also minimize the...

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...

Silicones & Cable Accessories

June 22, 2018 • ARTICLE ARCHIVE, Cable AccessoriesComments Off on Silicones & Cable Accessories

The recent INMR WORLD CONGRESS in Barcelona-Sitges offered a session dedicated to cable accessories. Expert presenters exchanged views about general technical trends in the industry but also about specific topics related to medium and high voltage cable...

Testing to Deal with Future Hybrid Grids

June 22, 2018 • ARTICLE ARCHIVE, From the World of Testing, TestingComments Off on Testing to Deal with Future Hybrid Grids

Many in our industry predict the future will bring greater blending of technology and hybridization. But what does hybridization mean in power systems? And what are its implications for testing? To answer, it is important to recognize that the key enablers of...

Insulator Design, Standards & Operating Parameters

June 16, 2018 • ARTICLE ARCHIVE, InsulatorsComments Off on Insulator Design, Standards & Operating Parameters

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...

Corona Shielding for HVDC Line Insulators

June 16, 2018 • ARTICLE ARCHIVE, Commentary by Pigini, CoronaComments (0)

Power utilities and insulator manufacturers continue to express differing views as to the relative value of shielding electrodes in DC. Back in 1972, significant laboratory research had already been undertaken on the influence of shielding and grading...

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