OMEM S.p.A.

15 Dimensional tolerances for toroidal not cut cores FromΦ To Φ Inside diameter Outside diameter Tolerance on width strip 0 10 ±0.4 ±0.5 +0.3 10.1 25 ±0.5 ±0.75 +0.3 25.1 50 ±0.75 ±1 +0.3 50.1 80 ±1 ±1.25 +0.4 80.1 100 ±1.25 ±1.5 +0.5 100.1 160 ±1.5 ±2 +0.5 160.1 200 ±2 ±2.5 +1.5 200.1 320 ±2.5 ±3 +2 320.1 500 ±3.5 ±4 +2.5 500.1 800 ±5 ±5.5 +3.5 800.1 1000 ±6.5 ±7.5 +5 1000.1 1500 ±10 ±10 +7 (Outside diameter – Inside diameter)/2 = Build up | If Build up <= 5 -> tolerances +1| If 5 < Build up <= 10 -> tolerances +0,3 Magnetic guarantees for not cut Ni-Fe 0.20mm/ bare cores Guarantee Frequency [Hz] Effective magnetic field [As/cm] Min peak induction [T] TN21 50 0.004 0.02 0.033 0.33 TN22* 50 0.004 0.02 0.042 0.4 TN23* 50 0.004 0.02 0.06 0.48 Magnetic guarantees for not cut Ni-Fe 0.07 - 0.10mm/ bare cores TN10 50 0.004 0.02 0.075 0.45 * selectedmaterial B(H) curves for 80% nichel - 20% iron not cut cores 0,001 0,01 0,1 1 0,001 0,01 0,1 1 Bpeak [T] He . [As/cm] B(H) curves for 80%Nichel - 20%Iron n t cut cores TN21 (0,2mm) TN22 (0,2mm) selected material TN23 (0,2mm) selected material TN10 (0,1mm)

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