C-Core & E-Core

Application

      C-Core & E-Core can be produced in various grades of CRGO materials and widely used for power transformers, current transformers, inductors, electric reactors, chokes and associated applications.

Advantages

      -  Open structure for easy assembling;

      -  Low core loss and high efficiency;

      -  Low magnetic remanence;

      -  Smaller size and lower weight;

      -  High magnetic flux density (Bs);

      -  High permeability (μ).

Material

      High quality silicon steels with high permeability, low core loss and remanence.

      Ultra-thin: 0.05mm, 0.08mm, 0.10mm..

      Normal: 0.18mm, 0.23mm, 0.27mm, 0.30mm, 0.35mm.

      Supplier: Baosteel, Shougang, Nippon-steel, JFE and POSCO.

Capability

Limit dimensions:

      Min. width: 5 mm;

      Max. Strip width: 300 mm;

      Min. inside window size: 12*7 mm;

      We are working on highly customized sizes and shapes, with single or multiple cuts, or with tighter tolerance.

Main processes:

      Slitting -> Winding -> Annealing -> Impregnation -> Cutting->Polishing->Testing

Optional finishes:

      - Varnish;

      - Epoxy coating;

      - Black paint;

      - Special edge chamfering

      - Special part marking

Capacity of cutting:

      - C-core: 3k pcs/day;

      - E-core: 1k pcs/day;

Technical

      C-core weight calculation formula

      Weight per core = 7.65*E*D*Sf*(2G+2F+πE-1.72R)*10-6(Kgs)

      In which,

      E = Stacking thickness;

      D = Strip width;

      G = Inside window height;

      F = Inside window width;

      R = Inside corner Radius;

      Sf = Stacking factor, 0.05mm material: 0.88 ~ 0.90;

      0.08mm material: 0.89 ~ 0.91;

      0.10mm material: 0.90 ~ 0.92;

      0.18mm material: 0.94 ~ 0.95;

      0.23mm material: 0.95 ~ 0.96;

      0.27mm material: 0.96 ~ 0.97;

      0.30mm material: 0.96 ~ 0.97;

Standards

      Both standard and customized C-core & E-core are available. Below are the popular standards that we are 

Following:

      - Chinese CD Range C-cores;

      - Chinese XCD Range C-cores;

      - British Range C-coreHWR series C-cores, which is equivalent to German DIN-41309 SG series and French UTE C93-325 FA series.

      - SU Range C-cores;

      - Chinese ED Range C-cores;

      - Chinese XED Range C-cores;

      - SE Range C-cores;

      - SM Range C-cores;

Quality control

      - On magnetic and mechanical quality control of silicon steel;

      - On physical dimension control of wound cores;

      - On annealing process and result;

      - On impregnation process;

      - On cutting process;

      - On dimensions and magnetic values of finished cores;

      - n packaging.