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HSP and Trench Bushing Group


High voltage equipment and bushings

HSP Hochspannungsgeräte GmbH – known as HSP – has a long history and a well known reputation in manufacturing bushings and high voltage equipment. Over 120 years ago it was founded as a division of Meirowsky & Co., was then taken over by Dielektra AG and later by Felten &Guilleaume Energietechnik AG (F&G). Since 1989 HSP is an independent company. In 2007 HSP inaugurated the most advanced and technically developed factory and test hall for condenser bushings near Cologne, Germany.

The power to connect. HSP.

As an expert technology partner, our goal is to create sustainable benefits for our customers. How do we do it? By driving forward-looking innovation with expertise and top quality. That’s why quality, reliability and progress are core values that are reflected in all of our products and services.

We see ourselves as pioneering the way for the new energy age – with reliable products featuring leading technology.


Trench is a world leader in power engineering and design of specialized electrical products. We provide a wide range of bushing products for power transformers, gas insulated substations, breakers, generators, buildings, test equipment, railroad systems and other specialty applications. Whatever your bushing requirement, we have the right bushing for your application.

Trench is your partner of choice for electrical power transmission and distribution solutions today; and for the development of your new technology solutions of tomorrow.

Products from the HSP & Trench Bushing Group

We develop and manufacture high voltage capacitance graded resin impregnated paper (RIP) bushings and oil impregnated paper (OIP) bushings from 24 kV up to 1200 kV and SF6-gas bushings up to 1200 kV. Our outstanding products are condenser bushings for HVDC transmission up to 1100 kV and for seismic applications with composite insulators and silicone rubber sheds. Our technology has been successfully in service for more than 60 years now and we can be seen as the world market leader in this segment.

Website: www.bushing-group.com