Configured to help lower plant lifecycle costs and future maintenance, our new generators bring a strong heritage of technical features from our legacies. Reliable construction and the latest digital features support condition-based diagnostics and maintenance in a variety of industrial and utility applications, ranging from coal to nuclear.
|Product Family||Cooling Technology||Applications||Power Output Range (MVA)|
|GIGATOP 4-pole||Hydrogen – Water||Nuclear||800 – 2,235|
|GIGATOP 2-pole||Hydrogen – Water||Nuclear, Fossil||600 – 1,400|
|TOPGAS||Hydrogen||Fossil||280 - 710|
|TOPAIR||Air||Synchronous Condensers, Industries||165 – 400|
|TOPACK||Air||Synchronous Condensers, Industries||40 – 165|
Based on many years of experience and continuous feedback, we’ve integrated common technologies into our portfolio of generators with one goal in mind: saving time and money for customers.
Applied on all new hydrogen and water-cooled generators
The stainless steel cooling tubes and water boxes of the stator winding bars prevent plugging by copper oxide build-up and help prevent higher costs of maintenance for stator bar cleaning. They also mitigate forced outages due to water leaks and allow for higher water-cooling speeds, raising efficiency. Our first generator build using stainless steel was commissioned in 1969—and is still in operation today without any stator rewind.
Applied on our GIGATOP families
GE GIGATOP generators have a massive outer support to limit overhang vibration and movement. Its self-retightening, end-winding support system allows thermal expansion of the bars while simultaneously tightening the winding-in radial and tangential directions. This system reduces maintenance costs as it can be retightened with the rotor in place.
Available across our GIGATOP, TOPGAS, and TOPAIR families
The concave-convex wedges used in GE’s generators are uniquely engineered to sustain pressure on the stator bars. This constant pressure prevents radial movements of the winding and reduces the likelihood of loosening effects. If found loose during inspections, they can be retightened—reducing costs of full stator slot rewedging.
Available across our generator families
The technical advancements we’ve made across our air, hydrogen, and water-cooled generators will help you achieve higher availability with a lower risk of forced shut down and reduced planned-maintenance time for your steam, industrial, and nuclear power plants.
Generator Health Monitoring is our digital platform for monitoring partial discharge, rotor flux, shaft voltages, stator end-winding vibrations, and stator bar temperatures.
Our range of robots allows rotor inspections in place, including core testing, visual inspection, stator slot wedging tightness check, and retaining ring outer and inner surfaces.
The GIGATOP 4-pole generator is the most powerful water-cooled generator in the world and is designed for high reliability and efficiency for your nuclear power plant.Learn more
The GIGATOP 2-pole generator features a hydrogen and water-cooled system that maintains high efficiency in steam power plants. Learn more from GE Steam Power.Learn more
In 2019, China’s largest nuclear power generator in service installed one of our Gigatop 4-pole generators for their nuclear power plant—which boasts a rating of 1,660 MW and a load factor of 82.2%, helping supply 12 TWh of electricity to the Chinese grid.
That same year, another GIGATOP 4-pole generator rated 1,495 MW produced 11.6 TWh of low-carbon electricity for the French grid, representing an 88.6% load factor. This equals the average yearly consumption of 2,500,000 households.