C-CORE S

C-cores can be produced in different types and shapes:

- ​One step (one strip width)
- Cruciform (few steps/different widths)
- Single-phase
- Three-phase
- Circular, oval or rectangular shape

C-cores properties depand on the following factors:

- Geometry of magnetic cores
- The size of air gap between cutted surfaces
- Quality of used CRGO steel
To measure magnetic properties of  C-cores, we are equipped with special instruments. We do 100% tests of all our cores and the measuring process is controlled and recorded.
- Intensity of the magnetic field Heff (A/m)
- Magnetic induction Bmax. (T)
- Core losses P (W)
- Amplitude permeability etc.

What are divided C-cores?

C-cores are produced by winding a strip of  CRGO steel on a rotating mandrel. After having been wound and glued by a epoxy resin, the core is then cut into a few pieces.   

The quality of cutted surfaces is very important for function of final C-core (transformer):

- Common quality of cutted surfaces up to 30 μm TYPE "A".
- Grinding cutted surfaces TYPE "C", done on grinding machine

Examples:

For the cores wound from the tape thickness of 0.35 (grade N) maximum allowed measuring losses and intensity of magnetic induction Bmax = 1,5T and frequency 50 Hz in four groups according to the following table are guaranteed:
wound magnetic cores
https://www.toroid-unicore.com/wound-magnetic-cores/C-CORE

CUTTED CORE "C" CORES (C-CORES)

For cores from the belt thickness 0.35 mm (grade N) the highest permissible specific loss values ​of 2.5 W/kg are guaranteed at a magnetic induction Bmax = 1.5 T and a frequency of 50 Hz in accordance with DIN 41309 and IEC 329 standards.
"C" + "Q" CORE MADE FROM NOMINAL THICKNESS BELT 0.10
For cores wound from tapes with a thickness of 0.10, the highest value of specific losses of 15 W/kg is guaranteed at magnetic induction Bmax = 1.5 T and frequency 400 Hz. At the request of the customer, we supply certificates of measurement of magnetic properties.