Volume 02 Issue 2

June 2025

Switchgear Magazine Volume 02 Issue 2

TABLE OF CONTENTS

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Editorial Message

The most productive sustainable power projects share one surprising trait: they weren’t built to save the planet. They were built to save money, reduce downtime, and generate measurable returns. Environmental benefits followed.

The word “sustainability” often evokes images of solar panels and windmills. But if we have learned anything from changes to the grid over the last decade, it is that without a viable business case, green energy is not sustainable.

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Interview with Marcel Rüfenacht

A deep dive into PFIFFNER’s innovation-driven leadership in high-voltage equipment, highlighting SF6-free technology, digital substation integration, and strategic global expansion.

Weidmann and Yash announce strategic partnership

Yash Highvoltage and Weidmann have announced the conclusion of an agency and distribution agreement, marking the first step in their collaboration.

Historical Evolution of Organic and Insulating Liquids: From Whale Oil to Mineral and Vegetable Oil

by Marius Grisaru

A historical and technical analysis of the early dismissal of vegetable oils as insulating liquids, highlighting issues of oxidation, moisture absorption, and standardization.

Evolution in analysis of HV and MV circuit breakers

Megger’s EGIL200 circuit breaker analyser redefines field testing with a user-driven design optimized for speed, flexibility, and actionable insights.

Interview with Gordan Kolak

KONČAR Group CEO Gordan Kolak outlines the company's transformation into a high-growth, innovation-driven industrial leader.

Holistic Harnessing of Big Data

by John D. McDonald

John D. McDonald outlines a strategic framework for holistic data management in the digitalized grid.

SF6 Circuit Breaker Failures during Shunt Reactor Compensated Line Switching

by Jerry X. Wen, Mazana Armstrong

Jerry X. Wen and Mazana Armstrong analyse catastrophic failures in 550 kV SF6 circuit breakers on shunt reactor-compensated lines at BC Hydro.

From SF₆- to Air-Insulated RC Voltage Dividers: Pfiffner Instrument Transformers’ Innovations for a Sustainable Energy Grid

Pfiffner introduces a new generation of air-insulated resistive-capacitive voltage dividers (RCVDs) designed to replace SF6-insulated models without altering physical dimensions.