Hyosung Heavy Industries' 22.9kV SST./Courtesy of Hyosung Heavy Industries

Hyosung Heavy Industries said on the 30th that it will showcase artificial intelligence (AI) data center power grid technology at the United States' largest transmission and distribution exhibition, "IEEE PES T&D 2026," to be held in Chicago, the United States, from May 4 to 7 (local time).

This exhibition will be held under the theme "Powering reliability, engineering resilience." Hyosung Heavy Industries plans to present solutions that connect the present and future of the power grid.

Key exhibits include the world's largest-capacity 800kV 7000A GCB (gas circuit breaker), the SST (solid-state transformer), a core power solution for next-generation data centers, the voltage source HVDC (high-voltage direct current transmission system) developed with Korea's first proprietary technology, and the STATCOM (static synchronous compensator), which enhances power stability for data centers and renewable energy.

The 800kV 7000A GCB, an actual product to be displayed at this exhibition, is a specialized model for U.S. export developed in March this year. Through design optimization, it keeps the same size as the existing 5000A model while reliably handling a massive 7000A current. Hyosung Heavy Industries said the 800kV GCB is a key power device for the 765kV transmission network, where investment in the United States has recently been active, and demand for large-capacity equipment has been rising.

Also on display will be a submodule of the 22.9kV SST, which Hyosung Heavy Industries developed as a world first. The company said the SST dramatically improves data center power efficiency and is regarded as a "game changer" for future data center power solutions. Hyosung Heavy Industries is currently conducting advanced research and development on SSTs that can handle higher voltages and plans to roll out commercial models sequentially.

Recently in the U.S. market, power demand for data centers and other facilities is expected to surge 25% over the next 10 years due to the explosive growth of the AI industry. A Hyosung Heavy Industries official said, "In line with changes in the local market, we will maximize the competitiveness of existing power equipment such as extra-high-voltage transformers and circuit breakers, while introducing next-generation technologies such as SST and HVDC to imprint our capabilities as a 'total solution provider' on local customers."

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