Transformer Magazine Vol. 13 Issue 4

The hidden infrastructure powering the future of rail mobility

by Transformer Magazine

Hitachi Energy explores the role of transformers in railway electrification, from traction substations to onboard power systems.

Interview with Paolo Miolo, Sales & Marketing Director at KEMA Labs (CESI Group)

by Transformer Magazine

Paolo Miolo, Sales & Marketing Director at KEMA Labs, examines the evolving transformer landscape.

Diagnostics and monitoring applied to business: What transformer practice can teach us about a changing industry

by Mladen Banović

Drawing on Industry Navigator research from 2018 to 2026, this column compares the way we diagnose and monitor critical transformers with the way we interpret a changing industry.

Turning transformer fire risk into a new safety benchmark

by Transformer Magazine

Siemens Energy looks at how transformer fire protection has evolved from conventional pressure-relief measures to designs developed through simulation and full-scale testing.

Beyond fixed limits: Baseline driven, trend focused Online DGA alarm strategy – Part II

by Bhaba Das, Marius Grisaru

This is the second part of an article which examines why many ODGA systems generate excessive or unreliable alarms when traditional fixed thresholds are applied to high-resolution data.

Interview with Mélissa Djarmouni, Sales Manager, Energy Sector, EMEA at the Sentric Safety Group

by Transformer Magazine

Mélissa Djarmouni discusses current industry pressures, including growing demand, tighter timelines, and the need for reliable partners.

From supply security to lifecycle reliability

by Transformer Magazine

Huaming examines how tap-changer sourcing decisions affect transformer delivery and long-term reliability.

Transformer Loading Capability vs Transformer Rating: Resolving a 100-year-old dilemma — Part I

by Oleg Roizman

Transformer Rating and Loading Capability are often treated as interchangeable, but they describe two different things: an assigned limit and what a transformer can physically carry under specified conditions.

From data to decisions: Continuous partial discharge monitoring for risk-driven transformer asset management — Part I

by Hamed Hashemi-Dezaki

This article presents OptiFinder as a fiber optic acoustic emission platform for continuous partial discharge monitoring and localization.

Enabling sustainable ultra-high-voltage (UHV) systems: Hitachi Energy AirRIP® flex AF 800 kV dry bushing

by Transformer Magazine

Hitachi Energy introduces the AirRIP® flex AF 800 kV dry bushing, designed for ultra-high-voltage transformers using alternative insulating fluids.

Managing insulation aging through direct hot spot temperature measurement: Benefits of gallium arsenide-based fiber-optic sensing for transformer winding hot spot monitoring — Part II

by Andrea Tonin, Fiorenzo Stevanato

This is the second part of an article which reviews direct hot spot measurement using gallium arsenide-based fibre optic sensors installed in the winding

From AI data centers to green infrastructure: The fastest-growing transformer applications

by Oğuz Sönmez

This article examines how AI data centers, renewable integration, EV charging and infrastructure electrification are driving demand for transformers.

Liquid insulation diagnostics: Connecting scheduled oil testing with continuous monitoring

by Transformer Magazine

Megger examines how scheduled oil testing and continuous monitoring work together to assess transformer insulation.