Nano crystalline cores are Iron
Based cores which is a specially developed soft magnetic material with low
magneto striction, high permeability (150000), saturation flux density of
1.25t and working temperature of 120 degrees celcius and above. These
materials are available in widths of 5mm to 40 mm in steps of 5 mm and
thickness varying from 20 microns to 30 microns.
Major manufacturers of nano crystalline raw material are Hitachi Metals
(japan) and Vacuum schmelze (Germany).
Because of its properties nano crystalline is slowly finding applications in
GFI (Ground fault indicator) toroidal cores. And HMA (High Metering
Accuracy) toroidal cores.
They are widely replacing Mu metal cores (NI FE) cores mainly because of its
lower cost as compared to widely fluctuating Nickel prices.
Nano crystalline cores are very brittle and sensitive after annealing. Hence
there is a need to encapsulate these cores by stainless steel casing or
press board casing to avoid any changes in electrical values after winding,
resin casting etc.
Exciting Force Values
||: 7.24/7.3 gms / cc
||: 1.25 T
||: 600 deg C
|Max Operating Temperature
||: 150 deg C
Max outside diameter: 800mm
Max height: 30 mm