The Baumer KTD4-3SA4Y10 is a tachogenerator commonly used in various industrial applications, including wind turbines. It features a blind hollow shaft design with a diameter range of 10 to 16 mm and operates within a nominal voltage range of 10 VDC to 60 VDC. This tachogenerator is known for its high response speed, wide rotation speed range, and ability to recognize the sense of rotation.