GARIP® Eco
Empowering the Switchgear of Tomorrow
A next-generation RIP transformer bushing designed for GIS systems operating without SF₆.
As the power industry moves towards more sustainable technologies, gas-insulated switchgear (GIS) is evolving to operate without SF₆— which was the industry-standard insulation gas but with high global warming potential. In its place, utilities and OEMs are adopting eco-efficient gas mixtures that demand change and updates from every component in the system.
The bushing, a critical interface between transformer and switchgear, must adapt to this shift. GARIP® Eco is Hitachi Energy’s response: a next-generation resin-impregnated paper (RIP) bushing built specifically for SF₆-free GIS systems operating with alternative gases.
Born from the trusted GARIP® product family and re-engineered for new performance realities, GARIP® Eco is pressure-qualified, gas-compatible, field-tested, and ready for what comes next.
Why GARIP® Eco?
GARIP® Eco has been developed to meet the technical challenges posed by SF₆-free GIS systems. New insulation gases such as C4-FN-based mixtures introduce changes in dielectric behavior, thermal loads, and internal operating pressure—requiring bushings to be reassessed, not reused.
Where traditional designs stop, GARIP® Eco begins.
It is engineered to perform reliably under new gas chemistries and elevated internal pressures, while retaining the durability, moisture resistance, and insulation quality associated with the trusted GARIP® bushing range.
Key Benefits of GARIP® Eco
GARIP® Eco is purpose-built and qualified for operation in GIS that uses alternative insulation gases instead of SF₆. It has undergone rigorous testing to validate dielectric performance and thermal behavior in new gas environments.
As part of the GARIP® family, GARIP® Eco maintains proven benefits: high moisture resistance, excellent thermal conductivity, and robust dielectric strength. It represents both innovation and continuity of the trusted GARIP® Bushing.
With internal pressures in SF₆-free GIS reaching up to ~11 bar, mechanical integrity and sealing become critical. GARIP® Eco is engineered to withstand high-pressure conditions, including full-type testing and long-term simulation.
GARIP® Eco has already been deployed in multiple SF₆-free GIS projects—including offshore substations and utility pilots in Europe. These field applications validate its readiness for wider adoption.
Sealing systems are designed to prevent leakage and withstand gas-specific aging mechanisms. GARIP® Eco supports gas tightness and long-term stability—helping operators ensure system integrity.
Available across a broad voltage range and with flexible connection designs, GARIP® Eco can be integrated into both new GIS installations and retrofit scenarios—whether using Hitachi GIS or third-party platforms.
Applications
Customer Story
Read the successful story on partnership and collaboration.
Engineering the Bushing for Tomorrow’s Switchgear
GARIP® Eco isn’t an adaptation—it’s a rethinking of what a GIS bushing must deliver.
Hitachi Energy brings together decades of leadership in transformers and transformer components to solve the future of GIS compatibility. With a legacy of reliability and a new era of qualification, GARIP® Eco empowers clean grid infrastructure without compromise.
Whether you're designing future-ready substations or transitioning legacy systems, GARIP® Eco helps you meet sustainability goals with confidence.
GARIP® Eco Transformer Bushings
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