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Pollution Performance of Composite Hollow Core Insulators

March 16, 2019 • ARTICLE ARCHIVE, Hollow CoreComments Off on Pollution Performance of Composite Hollow Core Insulators

Composite insulator housings have become a standard solution implemented on power grids worldwide and indeed are the preferred choice for application in heavily polluted service environments. To ensure performance under such conditions, a variety of design tests are performed, including: IEC 60587 – Inclined plane test; IEC 61462 (§7.3.2) / IEC 62217...

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Coating Porcelain Line Insulators to Prevent Pollution Flashover

March 16, 2019 • ARTICLE ARCHIVE, InsulatorsComments Off on Coating Porcelain Line Insulators to Prevent Pollution Flashover

The Gulf State of Kuwait is nestled in one of the driest places on earth. A highly urbanized country, it is also one of the highest per capita consumers of energy, mostly for the oil and gas sector as well as for air conditioning and water desalination...

Coating Line Insulators with RTV Silicone

March 15, 2019 • InsulatorsComments (0)

Study of RTV coatings to combat pollution flashover of line insulators began in China during the early 1980s, with the first trial application in 1986 when Tsinghua University in Beijing co-operated with the Tianjin Power Bureau and applied coatings to 15...

2019/20 INMR POWER ENGINEERS HANDBOOK

March 9, 2019 • ARTICLE ARCHIVEComments Off on 2019/20 INMR POWER ENGINEERS HANDBOOK

The soon-to-be-published 2019/20 INMR POWER ENGINEERS HANDBOOK features a compendium of technical articles on some of today’s key issues in design, operation and maintenance of power systems. These topics reflect INMR’s focus on insulators, surge...

Selective Application of EGLAs on Transmission Lines in Malaysia

March 9, 2019 • ARTICLE ARCHIVE, Utility Practice & ExperienceComments (0)

Malaysia’s power system operates in a region of intense lightning activity that adversely impacts performance of certain lines operated by the country’s grid operator, Tenaga Nasional Berhad (TNB). Among the lines most seriously affected by lightning are...

Condition Assessment of High Voltage Cable Terminations

March 9, 2019 • ARTICLE ARCHIVE, Cable AccessoriesComments Off on Condition Assessment of High Voltage Cable Terminations

Condition assessment of power transmission devices such cable systems is essential for their reliable operation. For example, diagnostics of oil-filled cables is important for transmission system operators to provide an indication of remaining lifetime. This...

Testing Adapts to UHV

Evolving HV Testing Adapts to UHV

March 9, 2019 • ARTICLE ARCHIVE, Commentary by Pigini, Editorial Columns, TestingComments (0)

High voltage testing has undergone remarkable evolution over the past 100 or so years and new technologies are imposing the need for continuing adaptation. Looking back at the earliest days of transmission, insulators and electrical equipment were verified...

Non-Soluble Surface Deposits on Insulators

March 9, 2019 • ARTICLE ARCHIVE, InsulatorsComments (0)

High voltage engineers well understand that insulators usually remain quiescent when dry – even if highly polluted. However, they can quickly light up with partial discharge activity once dirty surfaces are wetted by rain or condensation. The extent of such...

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