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    Cores of magnetic circuits

    make a very important part for transformers production... Cores of magnetic circuits
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    Toroidal Cores

    Toroidal core is basically wounded grain oriented silicon strip containing approximately 3% of silicium to the circle or other form.. Toroidal Cores
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    Cut C Cores

    Wound transformer cores are manufactured in process of winding up the transformer strip on a mandrel followed by the processes.. Cut C Cores
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    Unicore cores

    UNICORE constitute a new line of cores of magnetic circuits. Unicore cores

CORES OF MAGNETIC CIRCUITS

Cores of magnetic circuits make a very important part for transformers production and their quality is crucial for the final parameters of magnetic circuit.

A transformer core consists of magnetic circuit where its induction flux caused by the current passage flowing through the primary coiling induces electric voltage in the secondary coiling.

Wound transformer cores are used as compact cores (toroids) or as cores with air-gaps. ArcelorMittal Technotron s.r.o. produces cores from grain oriented transformer metal band with silicium alloyed Goss texture of about 3 %, thickness range form 0.15 to 0.35 mm.

General specification used paterial for processing according IEC 60404-1;2000

MarkMaterialThickness
C22Fe 3% Si0,15 - 0,35 mm

 

We offer this type of transformer cores:

- TOROIDAL CORES
- CUT C CORES
- CRUCIFORM CORES
- UNICORE CORES

APPLICATION POSSIBILITIES OF TOROIDAL CORES

Transmission transformers
Instrument transformers
Measurement transformers
Voltage transformers
Current transformers
Supply transformers
Power transformers

Schema Production process

 

MAGNETIC PROPERTIES OF TRANSFORMER CORES

Magnetic properties of transformer cores are directly depended on band quality and thickness used for production. The cores are tested individually and every core which is leaving the production is measured for provide the 100% quality of each delivery.

Measuring process is operated and scanned by technological computer. This computer evaluates following values:

▪ effective value non-sinusoidal actuating current Tµ[A]
▪ intensity of magnetic field Hef[A/m]
▪ magnetic induction Bmax[T]
▪ apparent power S[VA]
▪ active input (losses) P[W]
▪ amplitude permeability µ

These values are measured fluently in whole range of alternating magnetizing characteristic just limited to maximum power exciter circuit of measuring instrument.