×

Current Transformer Core And Method For Producing A Current Transformer Core

  • US 20070126546A1
  • Filed: 11/17/2006
  • Published: 06/07/2007
  • Est. Priority Date: 05/17/2004
  • Status: Active Grant
First Claim
Patent Images

1. A current transformer core comprising a ratio of the core outside diameter Da to the core inside diameter Di of <

  • 1.5, a saturation magnetostriction λ

    s

    |4| ppm, a round hysteresis loop with 0.50≦

    Br/Bs≦

    0.85 and an Hcmax<

    20 mA/cm, whereby the current transformer cores consist of a soft magnetic iron-based alloy in which at least 50% of the alloy structure consists of fine crystalline particles with an average particle size of 100 nm or less and the iron-based alloy has essentially the composition;


    (Fex-aCoaNib)xCuyMzSivBwwhere M denotes an element from the group V, Nb, W, Ta, Zr, Hf, Ti, Mo or a combination thereof and in addition;

    x+y+z+v+w=100%, where Fe+Co+Ni=x=100%−

    y−

    z−

    v−

    w Co a≦

    1.5 at % Ni b≦

    1.5 at % Cu 0.5≦

    y≦

    2 at % M z≦

    5 at % Si 6.5≦

    v≦

    18 at % B 5≦

    w≦

    14 at % wherein v+w>

    18 at %.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×