TUNGSTEN COPPER INDIA

Tungsten copper (WCu) materials are used for arcing contacts in SF6 circuit breakers for high and medium voltage applications. At the heart of the switching chamber, WCu arcing contacts are exposed to extreme mechanical and thermal stresses. During arcing, the temperature can reach levels ≥ 20,000 K, for instance. Tungsten-copper has unique material properties. A high level of temperature resistance is one of the most important advantages of tungsten, while the copper content increases the electrical and thermal conductivity... The arc erosion behavior of tungsten-copper is also affected by the grain size of the tungsten, depending on whether it is used as the cathode (C) or anode (A) and in an SF6 or air atmosphere