Toroidal magnetic cores type OL
Magnetic cores GAMMAMET®
Magnetic properties of toroidal boxed magnetic cores from amorphous and nanocrystalline alloys
| Magnetic core | Magnetic induction, Â800, Ò | Permeability μ0.08 | Maximum permeability | Squareness ratio Br/B800 | Coercive force, À/m | Core losses P0.2/20W/kg at 0.2 T, 20 kHz | Core losses P0.05/100W/kg at 0.05 T, 100 kHz | Curie temperature, °C | Density, kg/m3 | Saturation magnetostriction |
|---|---|---|---|---|---|---|---|---|---|---|
| GM 412À | 1,17 | 10000 | 600000 | 0,9 | 1,2 | 10 | 11 | 610 | 7400 | <1×10-6 |
| GM 412Â | 1,17 | 30000 | 45000 | 0,07 | 1,2 | 2,5 | 2,4 | 610 | 7400 | <1×10-6 |
| GM 414 | 1,17 | 60000 | 300000 | 0,6 | 1 | 4,5 | 4,3 | 600 | 7400 | <1,5×10-6 |
| GM 440À | 1,5 | 1000 | 200000 | 0,9 | 4 | 30 | 45 | 420 | 7300 | 25×10-6 |
| GM 440Â | 1,5 | 8000 | 20000 | 0,06 | 4 | 8 | 5 | 420 | 7300 | 25×10-6 |
| GM 501 | 0,43 | 150000 | 600000 | 0,6 | 0,15 | 3,6 | 3,6 | 150 | 7700 | <0,2×10-6 |
| GM 503À | 0,58 | 5000 | 1500000 | 0,92 | 0,2 | 8,5 | 10 | 260 | 7700 | <0,2×10-6 |
| GM 503Â | 0,58 | 40000 | 50000 | 0,03 | 0,25 | 2,6 | 2,8 | 260 | 7700 | <0,2×10-6 |
| GM 515À | 0,95 | 150 | 250000 | 0,94 | 1,5 | 60 | 90 | 500 | 7900 | <0,2×10-6 |
| GM 515Â | 0,95 | 1500 | 1550 | <0,01 | 1,5 | 12 | 13 | 500 | 7900 | <0,2×10-6 |
The properties of a magnetic material are specified in the table above . It is necessary to consider factor of filling magnetic core by magnetic material in electrotechnical calculations. The nominal factor of filling for an amorphous ribbon - 0,7
Marks of magnetic cores in protective containers
Magnetic cores in protective containers are delivered in the plastic or combined protective containers filled by compound, which not worsening magnetic properties of magnetic cores. D, d, and h - the geometrical sizes of magnetic core, D ', d ' and h ' - the geometrical sizes of protective container:
Cross-section section of a magnetic core in the protective container:
- Ribbon magnetic core,
- Dumping filler,
- Protective container.
At a designation of type magnetic core in the protective container the conditional mark of a magnetic alloy used of which magnetic core is made, and to it adds the sign A or B. If thermal processing was spent in a magnetic field.
Structure of a conditional symbol of magnetic core type in the protective container:
Thus, the conditional symbol of toroidal magnetic core in the protective container should looks like a following text: GM 503À ÎË20/32-10. At the order and in the documentation of other products is applying conditional marks according by specifications: "Magnetic core GM 503À ÎË20/32-10 ÒÓ 1261-030-12287107-2007".
Sizes of magnetic cores in protective containers:
| Standard size | Sizes of protective container | ||
|---|---|---|---|
| h', ìì | d', ìì | D', ìì | |
| OL15/25-10 | 13,5 | 12,5 | 29,0 |
| OL20/32-10 | 13,5 | 17,5 | 34,0 |
| OL28/45-10 | 15,0 | 23,3 | 50,0 |
| OL40/64-10 | 15,0 | 36,3 | 69,5 |
| OL40/64-20 | 26,0 | 36,3 | 69,5 |
| ÎË40/64-30 | 36,5 | 36,3 | 69,5 |
Sizes of magnetic cores in combined protective containers:
Magnetic cores in the combined protective container can have any standard size with internal diameter not less than 80 mm, external diameter no more than 600 mm and height proportional 5 mm. Exception compounds magnetic cores GM503Â, GM412Â, GM440Â and GM515Â which external diameter does not exceed 140 mm.
Sizes list of magnetic cores in protective containers you can see in Table 1. Weight and geometrical sizes of toroidal boxed magnetic cores
List of agreed specifications
- ÒÓ 1261-030-12287107-2007. Taping toroidal magnetic cores GAMMAMET in protective containers.