Special cores

Magnitosila specializes in the production of magnetic cores not only of standard configurations for power three-phase transformers. The scope of our capabilities includes the manufacture of almost any charge specialized magnetic cores.

Our reference list includes:

  • single-phase and three-phase magnetic cores for induction furnaces;
  • magnetic cores for arcing reactors;
  • magnetic cores for regulatory systems;
  • magnetic cores of quenching plants;
  • magnetic circuits for water-cooled inductors
  • and many others.

Experienced designers and engineers of our plant are ready to adapt the customer’s documentation to modern materials and technologies, as well as to develop a magnetic circuit design in the complete absence of design data (from a living sample or according to the technical task).

Magnetic cores laminations using STEP-LAP technology

STEP-LAP technology in the manufacture of magnetic cores can significantly reduce no load losses in the finished product (compared to a combined joint). This is especially true in the production of power and distribution transformers with capacities above 160 kVA.

The capabilities of our production allow us to produce and ship individual sheets of magnetic cores to the customer. The need for separate sheets is relevant if the customer has his own section for assembling magnetic cores. At the same time, the site must have specialized equipment, equipment and qualified personnel

The transverse cutting of electrical steel for magnetic cores according to the “step-lap” technology is a set of magnetic circuit plates laid in bags on pallets. Steel grade, plate geometry (see the section on technical production capabilities), step-lap parameters, requirements for stacking packages and fixing plates on pallets can be made in accordance with customer requirements.

Assembled magnetic cores

We offer the manufacture and supply of magnetic cores for power transformers and complete reactors.
“Assembled” – means that, in accordance with the design documentation, sheets of the magnetic circuit, insulating parts, metal structures of the core will be manufactured, as well as batching and assembly.

The photo shows the process of completing the assembly of a 3200kVA transformer magnetic circuit

Our own hoisting mechanisms and internal workshop transport allow us to produce fully assembled core cores weighing up to 6 tons.

Second quarter of 2019

The second quarter of 2019 and the summer period as a whole, as always, are marked by a surge in demand.

The main core products of our plant again became: cores for dry type power transformers (average power 1250kVA)

However, not a small share in the manufactured assortment was occupied by non-standard magnetic cores and sheets of magnetic cores for subsequent assembly

Magnetic cores laminations using combined joints

Sheets of magnetic cores according to the technology of combined joint (direct joint)

The combined joint, as well as the direct joint, are the most traditional technologies used in the manufacture of transformers. These technologies are used to reduce the cost of the magnetic circuit and simplify assembly. At the same time, no-load losses increase in comparison with STEP-LAP technology on similar magnetic cores. Also, direct and combined joints are used in a number of specialized (including furnace and induction) transformers.

The supply of individual sheets of the magnetic circuit according to the technology of direct and combined joints is relevant if the customer has specialized equipment, equipment and qualified personnel for self-assembly.

When shipped, the transversely cut electrical steel for magnetic cores with a combined joint is a set of magnetic core plates stacked in bags on pallets. Steel grade, plate geometry (see the section on technical production capabilities), requirements for stacking packages and fixing plates on pallets can be made in accordance with customer requirements.