Rated voltage  

 12kV 

 Rated current  

 3150A 

          Tensile strength             

                         ≥ 60MPa                         

 Compressive strength 

 ≥ 160MPa

 Flexural strength

  ≥ 115 MPa

 Impulse strength

   ≥ 10KJ/m2

 Brinell hardness

 ≥ 25HB

 Insulation resistance

   ≥10000MΩ