TMEIC Corporation has introduced the first nanocomposite mica insulating tape used in high-voltage rotating machinery. The technology enables the manufacture of more compact and energy-efficient equipment through the uniform integration of nanoparticles that improve the dielectric properties of the system.
Nanocomposite mica insulating tape
Through the use of nanocomposite technology, TMEIC was able to reduce the thickness of the insulating layer while maintaining its electrical integrity. This facilitates a more compact design of generators and industrial motors, while increasing the copper fill factor in the stator coils, optimizing power transfer.
In September 2025, the company applied this solution to an 800 kVA synchronous generator, achieving a 10% reduction in size, 20% less copper losses and an efficiency improvement of 0.2% compared to traditional models.
Moreover, the conveyor can be integrated during reel renewal on installed machinery, obtaining the same efficiency and loss reduction benefits. In addition, its design facilitates transport and handling, optimizing maintenance work in the field.
Vice President of TMEIC’s Rotating Machinery Systems Division Hideki Iwanaga said this is the first practical implementation of nanocomposites in industrial generators, and is part of a broader strategy.
We seek to extend this technology across our entire range of rotating machinery, offering energy-intensive solutions that contribute to a carbon-neutral society.
Iwanaga said.
Source and photo: TMEIC