Nanocrystalline Rectangular Cores
Nanocrystalline Rectangular Cores for used in instrument current transformers with accuracy class 0.2, 0.2s, Bushing current transformer for poxy resin cast, Gas insulated or oil-immersed switch-gears, LV, MV and HV switch-gear, power system, relay protection system, power monitoring devices.Flexible Design with Toroidal Shape, Rectangular Shape or Oval Shape.
Characteristics
High initial permeability: Larger insert loss, better inhibiting effect on conducted interference than ferrite.
High saturation induction: about 2-3 times higher than ferrite, hardly magnetized to saturate in the cases of current strong interference.
Excellent temperature stability: higher Curie temperature, the changes in alloy performance obviously lower than ferrite under the circumstance of larger temperature fluctuations, showing excellent temperature stability
Flexible frequency characteristic: More flexible to obtain the required frequency characteristic through adjustment process.
Physical Properties
| Saturation Magnetization(Bs) | 1.25T | Saturation Magnetostrictive Coefficient(λs) | <2×10-6 |
|---|---|---|---|
| Curie Temperature(Tc) | 560℃ | Density(d) | 7.3g/cm3 |
| Crystallization Temperature(Tx) | 510℃ | Resistivity(ρ) | 130μΩ-cm |
| Hardness(Hv) | 800 | Continuous Operating Temperature Range | -55~130℃ |
Magnetic Properties
| Annealing Method | Non-magnetic Annealing |
|---|---|
| Initial Permeability | >150,000 |
| Maximum Permeability | >600,000 |
| Residual Magnetic Flux Density | 0.6T |
| Coercivity | <0.8A/m |
| Iron Loss P(20kHz,0.5T) | <25W/kg |
| Iron Loss P(100kHz,0.3T) | <150W/kg |
| Iron Loss Change Rate (-55℃~125℃) | <15% |
Applications
Bushing current transformer for poxy resin cast
Gas insulated or oil-immersed switch-gears
LV, MV and HV switch-gear
Power system
Relay protection system
Power monitoring devices
Performance Curves
Core Dimension
A-Core Build；B-Window Width； C-Window Height；D-Strip Width； E-Core Width；
F-Core Length；Ae-Section Area；Lm-Length of Magnetic Path
Specification
Cores with other specifications can be provided concerning to customer demand.
Core Dimension
OD-Outside Diameter ; ID-Inside Diameter ; HT- Height
Specification
The dimensions of OD and HT is defined as Max. ID is defined as Min.
Cores with other specifications can be provided concerning to customer demand.
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