Tungsten-copper (W-Cu) electrical alloys are extensively used in high-voltage switch applications due to their exceptional properties. These materials leverage the high melting point and excellent thermal and electrical conductivity of copper, combined with the high strength and arc resistance of tungsten. The unique combination of these elements results in a material that can effectively dissipate heat and withstand the high temperatures and mechanical stresses encountered in high-voltage switchgear operations.
In high-voltage and ultra-high-voltage switchgear, tungsten-copper alloys are crucial for ensuring reliable performance and longevity. They are commonly used in the contacts of 128kV SF6 circuit breakers, high-voltage vacuum load switches (ranging from 12kV to 40.5kV and 1000A), and surge arresters. These applications benefit from the alloys’ excellent resistance to electrical corrosion, arc erosion, and their ability to operate under high voltage.
The use of tungsten-copper in high-voltage vacuum switches offers several advantages, including compact size, ease of maintenance, and wide application range. These switches are capable of operating in harsh environments, such as humid, flammable, explosive, and corrosive conditions, making them highly versatile and reliable in various industrial settings.
