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ROUND (R-) LOOPS

Round (R) loops are formed if no magnetic anisotropy dominates the material. A ratio of remanence to saturation induction of BR/BS ≈ 50 % is characteristic. The permeability course µ(H) is determined by the initial permeability µi and the much higher maximum permeability µmax as well as by its field strength position. But all variables are heavily dependent on the material and manufacturing technology.

Example of zero-magnetostriction nanocrystalline VITROPERM alloy: µi > 100.000 und µmax > 500.000.

Application:
Wherever maximum permeability is required under bipolar excitation.

Examples: Fault current transformer for AC-sensitive ELCBs, ISDN interface transformers, current transformer without DC tolerance, common mode chokes for reduced leakage current.

Last update: 02.07.2012

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