Magnetic core that is suitable for use in a current transformer, method for the production of a magnetic core and current transformer with a magnetic core

US6507262B1 · kind B1 · utility

Assignee

• Vacuumschmelze GmbH & Co. KG · DE

Inventors

• Detlef Otte · Gelnhausen, DE
• Jörg Petzold · Bruchköbel, DE

Key dates

• Filing date: Aug 15, 2001
• Grant date: Jan 14, 2003
• Expiry date: Aug 15, 2021

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01F38/28
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

Magnetic cores including coiled amorphous ferromagnetic alloy strips in which at least fifty percent of the volume contains fine crystalline particles with an average particle size of 100 nm or less are addressed. The composition of the alloy essentially corresponds to the formula FeaCobCucSidBeMf, where M is at least one of the elements V, Nb, Ta, Ti, Mo, W, Zr, and Hf; and a, b, c, d, e, and f are indicated in atom percent and meet the following conditions: 0.5≦c≦2; 6.5≦d≦18; 5≦e≦14; 1≦f≦6; with d+e>18 and 0≦b≦15, and a+b+c+d+e+f=100.