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What are the performance requirements of the Copper-chromium (CuCr) Electrical Contact for Vacuum Interrupter?
Oct 31, 2017

The common goal of different manufacturing processes for CuCr electrical contacts, such as vacuum infiltration, vacuum casting, vacuum arc-melting and sintering, is to fulfill the following requirements:

1.        Low gas contents and impurity degrees

2.        Relatively high mechanical strength of the contact material

3.        Good extinguishing ability and smooth surface after arcing on the contact surface

4.        High thermal conductivity

5.        Getter characteristics of condensing metal vapor

6.        Small evaporation rate and small bum-up (erosion effect)

7.        Low chopping current thus generates small over-voltage in the circuit

8.        Low welding disposition during closing undercurrent load and in closed position under short-circuit conditions

9.        Good electrical conductivity for reduction of permanent power losses, and so on.

Sirui provides high quality copper-chromium (CuCr) electrical contacts for vacuum interrupter, which can meet all the requirements mentioned above as well as the custom needs.