Current transformer cores formed from magnetic iron-based...

Details Current transformer cores formed from magnetic iron-based... Current transformer cores formed from magnetic iron-based...

2011-01-04

2011-01-04

Kim, Paul D (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S592100, C029S602100, C029S605000, C029S607000, C029S609000, C148S108000, C148S121000, C336S065000, C336S083000, C336S200000, C336S233000, C336S234000

Reexamination Certificate

active

07861403

ABSTRACT:
A current transformer core has a ratio of the core outside diameter Dato the core inside diameter Diof <1.5, a saturation magnetostriction λsof =|4| ppm, a circular hysteresis loop with 0.50=Br/Bs=0.85 and an Hcmax=20 mA/cm. The current transformer core is made of a soft magnetic iron alloy in which at least 50% of the alloy structure is occupied by fine-crystalline particles with an average particle size of 100 nm or less, and the iron-based alloy comprises, in essence, one combination.

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