INMR - Enriching Technical Knowledge of T&D Professionals

FREE! Subscribe to INMR WEEKLY TECHNICAL REVIEW

World’s Most Bizarre Power Line Structures

INMR presents its selection of the most bizarre power structures seen over nearly 30 years reporting on overhead lines across the globe. Read More >

Artificial Pollution Tests of Polymeric Insulators

CIGRE WG C4.303 Brochure 555, “Artificial pollution test for polymer insulators: results of a round robin test” reported on comparative pollution tests conducted at several different laboratories on two silicone line insulator samples. Read More >

Sheath Voltage Limiter Failure from Improper Bonding of Cable Sheaths

Silicone Materials & Gels for Cable Accessories

Surge Arrester Sizing for Sub-Transmission Systems Using Grounding Transformers

Safety Issues for MV/HV Underground Cables & Accessories in Urban Areas

Protecting Neutral Terminals of Power Transformers at Distribution Substations

in Substations, Utility Practice & Experience

When delta-wye power transformers are installed in a distribution substation, the neutral is usually solidly grounded. Read More >
Cooling Tower Pollution Impact on Substation Insulation

in Utility Practice & Experience

Cooling towers are a major source of pollution at substations located near thermal power plants. Read More >
Modes of Failure of Line Insulators

in Insulators

Three insulator technologies are deployed in delivery of electrical power and it is not unusual to find a mix of all applied on the same line. Read More >
Surge Protection of Substations

in Utility Practice & Experience

Protecting substations from lightning and switching surges that lead to insulation flashover has always been a key issue. Read More >
Composite Insulating Cross-Arms for 400 kV Lattice Towers

in Utility Practice & Experience

A great deal of research has been devoted to finding tower designs that utilize composite cross-arms to replace insulators as well as traditional steel cross-arms. Read More >
Chemistry & Properties of Silicones

in Silicone & Other Materials

In contrast to other polymeric insulation materials, silicones are not made up of a carbon to carbon backbone but rather consist of repeating silicon-oxygen groups with two methyl groups each bonded to the silicon. Read More >
Type & Commissioning Testing of High Voltage Cables

in Cables & Accessories

Extruded XLPE cables in underground transmission systems now account for the vast majority of new installations. Read More >
DDDGs & Reference Insulators Help Monitor Pollution Exposure

in Insulators

Some failures of insulators can be traced to inferior design, materials or manufacturing. Read More >
Best Practice in Lightning Protection for Distribution Systems

in Arresters, Woodworth on Arresters

As demand for reliable power continues to grow worldwide, improving the lightning reliability of distribution systems becomes more and more common. Read More >

About us

INMR offers expert independent technical content for T&D engineers and professionals. Special emphasis is on design, operation and maintenance of overhead lines, substations and power cable networks as well as on testing and certification of key components such as insulators, surge arresters, bushings, power cables and cable accessories, and more.

Advertising at INMR

INMR is ranked as one of the leading site for T&D professionals, with average time on site per session of over 25 minutes. Contact info@inmr.com to start presenting your products and technologies to an audience of over 100,000 T&D engineers and professionals in more than 180 countries. Download Media Kit