Electric current at high voltages from 72.5 kV to 800 kV is transmitted great distances and distributed from 5 to 38 kV to end users such as households, industrial plants or transportation.
Protection of the transmission networks and the distribution systems calls for technically reliable switchgear with a long service life.
Arcing contacts and contact systems from PLANSEE form the heart of the breaking chamber. They are subjected to extreme mechanical and thermal stresses. Temperatures of several thousand degrees Fahrenheit occur on the surfaces for fractions of a second.
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PLANSEE´s capabilities encompass the manufacture of the sintering materials, but also the most modern joining and machining technologies, which are necessary for the high and medium voltage ranges. |
For gas insulated high voltage switchgear PLANSEE USA supplies:
- Arcing contacts made of WCu for interruptors
- Contact systems made of Cu, Cu alloys for circuit breakers, earthing switches and disconnectors
For SF6 circuit breakers in the high and medium voltage range PLANSEE USA supplies:
- Arcing contacts made of WCu
- Contact systems made of Cu and Cu-alloys
For vacuum interruptors in the medium voltage range PLANSEE USA supplies:
- Vacuum contacts made of CuCr, WCAg and WCu
- Contact systems
