Part of the GE Vernova GRiDEA portfolio, the HYpact-145g combines gas-insulated and air-insulated components into a single, compact solution backed by 50+ years of manufacturing excellence.

Core Technology & Features:

Accelerating Grid Decarbonization with g³ Technology

The HYpact-145g is fully SF₆-free, utilizing g³ gas technology (an advanced mixture based on CO₂, O₂, and 3.5% C₄F₇N additive). This breakthrough insulation and switching medium achieves a 99% reduction in the gas mixture's contribution to global warming compared to traditional SF₆. Crucially, it delivers this benefit while matching the exact ratings, performance, and product footprint of equivalent SF₆ switchgear.

Key Benefits and Footprint Optimization

Engineered for maximum operational efficiency, the hybrid switchgear cuts required physical space in half or more depending on the application, helping operators significantly lower civil work costs. It is factory-adjusted and tested, arriving in a highly assembled state with sealed gas compartments for fast, easy installation via truck or container shipment. Its virtually maintenance-free operation also ensures reliable performance in demanding environments.

Digitally Native Intelligence with LPITs

The switchgear is digitally native, featuring optional low-power instrument transformers (LPITs) for advanced digital power sensing. This intelligent integration supports decarbonization, minimizes strategic raw material consumption, and provides precise monitoring and control capabilities over a 40-year life cycle.

Application Use Cases

• Substation Modernization & Space Constraints:
  Legacy air-insulated substations (AIS) occupy massive real estate footprints, making capacity expansions within urban or brownfield boundaries nearly impossible. By combining gas-insulated busbars and switching modules with air-insulated bushings into a single compact device, the HYpact-145g slashes required substation spatial footprints significantly. This enables utilities to expand electrical capacity and accommodate growing grid loads without the need to acquire costly adjacent land.
• Utility Decarbonization Mandates:
  Growing corporate sustainability targets and municipal carbon-reduction regulations make deploying traditional, greenhouse gas-heavy switchgear legally and politically unviable. Utilizing breakthrough g³ gas technology, the HYpact-145g cuts the global warming potential contribution of its insulating medium by approximately 99% compared to conventional SF₆. This empowers grid operators to meet aggressive net-zero mandates while maintaining a robust 145 kV, 40 kA fault-clearing performance envelope.
• Harsh Environment & Remote Grid Integration:
  Substation assets deployed in regions subject to extreme ambient temperatures (-30°C to +40°C), heavy vibrations, or severe weather typically suffer from accelerated mechanical wear and high maintenance overhead. Engineered with fully enclosed, factory-sealed gas compartments and robust M2/C2 mechanical and capacitive switching classes, the switchgear delivers virtually maintenance-free operation and long-term reliability in demanding operational environments.
• Accelerated Speed-to-Power: 
  For high-demand sectors under pressure to energize quickly—such as data centers, Battery Energy Storage Systems (BESS), and industry—the HYpact-145g features industry-leading delivery times below one year. Factory-tested, factory-adjusted, and shipped in a highly assembled state with sealed gas compartments, units require no special tools and can be transported via truck or container shipping for rapid installation and commissioning in as little as one to three days per bay.