Current Transformers 2019-02-03T20:10:18+00:00

Nanocrystalline Current Transformers

Efficient
Stable
Cost

Zero Sequence Current Transformer with high sensitivity, nearly zero offset and phase shift, good balance and temperature characteristic, small change in output characteristic under DC impact, more types of output characteristic available.

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)1.25TSaturation 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)800Continuous Operating Temperature Range-55~130℃

Magnetic Properties

Annealing MethodNon-magnetic Annealing
Initial Permeability>150,000
Maximum Permeability>600,000
Residual Magnetic Flux Density0.6T
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%
"Amorphous Inductor"

Applications

  • Miniature residual current circuit breaker

  • Earth leakage circuit breaker

  • Earth leakage protection plug ALCL

  • Leakage module

Performance Curves

Core Dimension

Specification

Other dimensions excluded in the Table according to customers’ requirements.

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