trafo bg
responsible and reliable

Manufacturing of Wound Products

We manufacture winding material according to your specifications.
According to the standards: VDE, ÖVE, IEC, UL, CSA, SEV or EN norms.
All winding material is 100% tested.

Transformers for PCB mounting

Nominal capacity: 0,2 VA - 100 VA
Specification: moulded in an insulating enclosure
hermetically sealed

Transformers for bracket mounting

Nominal capacity: 5 VA - 100 kVA
Specification: single phase or threephase
open
hermetically sealed
or in an enclosure

Toroidal transformers

Nominal capacity: 10 VA - 10 kVA
Specification: moulded perforation
Standard mounting
or in enclosure

Coils and transmitters

Models: Air coils
Ferrite core or iron core coils
Ferrite or iron core transmitters
Specification: open
moulded in insulating enclosure
hermetically sealed
  • Manufacturing Open or Close

    2 and 5 spindle CNC winding machine - Marsilli WM 2002

    • Electronic wire tension regulator
    • Pneumatic wire tension release
    • Distance between spindles 150 mm
    • Wire range 0,01 bis 1,0 mm
    • Winding speed up to 15,000 rpm
    • Max. coil diagonal 120 mm
    • Winding width up to 80 mm

    Winding machines - IWT FW122

    • Programmable winding parameters
    • Types of winding: normal, trapeze, spread etc.
    • Wire range 0,01 – 2,0 mm
    • Winding speed 12,000 rpm
    • Max. coil diagonal 200 mm
    • Winding width up to 400 mm

    Single spindle winding machine - Meteor M21

    • For production of self-bonding air coils
    • Fully automated operation
    • Wire range 0,01 to 2,0 mm
    • Winding speed up to 12,000 rpm
    • Max. coil diagonal 200 mm
    • Winding width up to 400 mm

    Thick wire and foil wrapping machines

    • Wire range 0,04 – 6,0 mm

    Toroidal core winding machines

    • Wire range 0,1 to 3,0 mm
    • Max. coil diagonal 300 mm
    • Finished height up to 150 mm
  • Voltech AT3600 testing machine Open or Close

    Voltech AT3600 PrüfgerätThe AT testing machine was designed for the quick, precise and reliable testing of transformers and other winding components within a production or component processing area.

    It is a tool that can be built and used in a variety of ways and provides more than 40 different testing procedures, which are constantly extended. The machine can manage an average of 10 tests per second. Each individual test is independent of all the others.

    Special tests:
    • Inductivity(series connection and parallel connection)
    • Leakage inductivity
    • Capacity between windings
    • High voltage test (AC) up to 8KV
    • High voltage impulse winding test
    Results:
    • It is possible to print out results directly from the AT testing machine
    • The results are saved by the server programme
    • The results can be easily exported to other Windows programmes for analysis
    • Below are the typical tests that are applied to the group of mains transformers and ferrites.
    Network transformers:
    • CTY – connection testing
    • R – correct wire strength, connections status
    • (TR – turns ratio and phasing)
    • MAGI – magnetising current ( core material)
    • VOC – open circuit voltage
    • IR – insulation resistance
    • WATT – power loss
    • HPAC 5,5-KV – high voltage test AC
    • (ILK – leakage current)
    • SURG – high voltage impulse text
    Toroidal transformers:
    • CTY – connection testing
    • (R – correct wire strength, connections status)
    • MAGI - magnetising current ( core material)
    • VOC – open circuit voltage
    • WATT – power loss
    • HPAC 5,5-KV – high voltage test AC
    • (ILK – leakage current)
    • SURG – high voltage impulse test
    Ferrites:
    • CTY – connection testing
    • R – correct wire strength, connections status
    • LS – inductivity (series connection)
    • LL – inductivity leakage
    • (QL – quality factor)
    • (C – capacity between windings)
    • TRL winding ratio and winding direction with inductivity
    • (VOC / LVOC – open circuit voltage)
    • (IR – insulation resistance)
    • HPDC – high voltage test DC – 7 KV
    • HPAC 5,5 KV – high voltage test AC
    • SURG – high voltage impulse test
    • (TRIM – adjustment and / or alignment)

    When selecting the correct connection technology and the right adaptor, all the tests can be carried out with "real" 4-connections measurement technology. This encompasses all the line resistances, capacities, inductivities, and the connection pin of the component.