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DC Immune CT Core is widely used for DC resistent field, which guarantee cores will not be saturated when the original side passes a certain dc component. Currently, we have TWO Solutions for DC Immunity -- Co-Base Amorphous Single Core; Amorphous Nanocrystalline Composite Core.

A. Amorphous & Nanocrystalline Dual Core for Energy Meter - Composite Cores
Key Properties:
· Unique patent hold, DC current immunity composite cores with amorphous & Nanocrystalline Cores together.
· Strong immunity for DC current
· Applicable current range 1.5-200A
· Good temperature stability
With competitive price & good quality Standard cores dimensions, applicable CT accuracy, Maximal DC current immunity range:

B. Co-base Amorphous Core for Energy Meter - Single Cores
Key Properties:
· Made by single magnetic materials- Co-base Amorphous, with constant permeability (µ=1400-2000)
· Strong immunity for DC current, applicable current 1.5A - 200A
· High linearity, high accuracy class, applicable transformer accuracy range 0.5-1.0 Class
· Good temperature stability
· Core size saving by Volume & Weight
Typical Parameter |
|
Material | Co-Base Amorphous |
Saturation flux density | Bs = 0.55 T |
Initial Permeability | µo =2x104 Gs/Oe |
Curie Temperature | Tc =210°C |
Crystallization Temperature | 210°C |
Working Temperature | -40°C~+70°C |
Tap Thickness | 22-30µm |
Saturation Magnetostriction | λs= <30x10-6 |
Density | ρ = 7.6 g/cm3 |
Standard cores dimensions, applicable CT accuracy, Maximal DC current immunity range:



We design & produce goods based on cients special drawing and specification, parameter needed including:
1-What is the rate current and max current at primary ?
2-Core size and hole of CT size
3-The accuracy of the transformer .

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