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Focus on Cable Accessories

Trends in Insulation Materials: Terminations

February 25, 2017 • ARTICLE ARCHIVE, Focus on Cable AccessoriesComments (0)

Over the years, three different installation technologies and three different insulation materials have become widely accepted in the cable accessory business. In regard to functionality and service life, the requirements for such accessories are similar to those placed on the cable itself. At the same time, it should also be noted that installation...

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HV Cable Accessories of the Future

February 18, 2017 • ARTICLE ARCHIVE, Editorial Columns, Focus on Cable Accessories

Since the introduction of different cable connector systems, the sub-classification of what are commonly referred to as ‘cable accessories’ into joints and terminations no longer seems appropriate. More and more, medium and high voltage cables are being...

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Al Screened MV Cable Requires Special Connection for Joints & Terminations

Al Screened MV Cable Requires Special Connection for Joints & Terminations

October 31, 2015 • ARTICLE ARCHIVE, Editorial Columns, Focus on Cable Accessories

When it comes to medium voltage cables, the past 40 years have witnessed great diversification in design and composition. Indeed, in Europe alone, the number of different products on the market now exceeds 100. This extreme diversification within the MV range...

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EHV Cable Screen Design Impacts Reliability of Accessories

EHV Cable Screen Design Impacts Reliability of Accessories

October 24, 2015 • ARTICLE ARCHIVE, Editorial Columns, Focus on Cable Accessories

There are only marginal differences when it comes to conductor and insulation design for most modern extra high voltage cables worldwide. The conductor typically consists either of aluminium or, for higher ampacity, mainly copper. To reduce the influence of...

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Changeover to Polymeric Cables Will Impact AC & DC Accessories

Changeover to Polymeric Cables Will Impact AC & DC Accessories

July 4, 2015 • ARTICLE ARCHIVE, Editorial Columns, Focus on Cable Accessories

The future development of cable accessories is being influenced mainly by the continuing technological shift from paper to polymeric-insulated cables. Moreover, the impact of this shift is not the same for AC as it is for DC. At the present, the large...

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Design Trend for HV & EHV Cable Joints

December 28, 2014 • ARTICLE ARCHIVE, Focus on Cable Accessories

Although a number of alternative solutions have been developed for the design of joints on modern XLPE insulated high voltage and extra high voltage cables, the future trend worldwide now seems increasingly clear. Basically, a joint connects two end sections...

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Dielectric Puncture: How to Avoid It, How to Test for It

July 10, 2014 • ARTICLE ARCHIVE, Editorial Columns, Focus on Cable Accessories

Not that long ago I visited a power utility where they are facing outages caused by de-capping of porcelain insulator strings – a process whereby the porcelain body separates from the insulator head. The principal mode of failure in this case is insulator...

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Database to Make PD Measurements of MV Cable Systems More Effective

October 15, 2013 • ARTICLE ARCHIVE, Editorial Columns, Focus on Cable Accessories

As quality of service become ever more important, regulatory authorities in Europe are introducing a ‘bonus-penalty’ type system to push electricity supply utilities to improve their network reliability.   However, as is evident from Fig. 1, between 70...

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