Threephase Transformers - Separation, Insulation and Safety construction

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Power range up to 40KVA, higher power upon request


These transformers are built to order with power and voltage values for primary and secondary windings specified by the Client's needs. They are impregnated with anti-mold resin which makes them suitable for very humid environments.
The transformers here listed are all classified non-short-circuit proof by construction, a protection can be provided as an option.
The construction can be either with or without air channels between the windings; when the power size requires it, we place air channels between the windings (in frontal-only version or on 4 sides of the windings), which improve the heat dissipation and the inter-winding insulation. They can also be useful to reduce the Icc values, a key factor when the transformer is implemented in electronic devices. These transformers are built according to the IEC 61558 standard, therefore all its subcategories are available, as Separation, Insulation, Safety and Medical use type. The IEC 60076 standard is also supported in its applicable parts.


Technical Specifications for Separation Transformers:

  • Standards reference: IEC 61558-1, IEC 61558-2-1 IEC 61558-2-2
  • Thermal insulation Class: F, H (based on construction)
  • Protection grade: IP00
  • Suitable for installation up to: IP23
  • Dielectric rigidity test: according to IEC standard
  • Frequency: 50-60Hz
  • Noninflammable nylon screw terminals connection

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Technical Specifications for Safety and Insulation Transformers:

  • Standard: IEC 61558-1, IEC 61558-2-2, IEC 61558-2-4, IEC 61558-2-6
  • Thermal insulation Class: F, H (based on construction)
  • Maximum ambient temperature: 40° C
  • Protection grade: IP00
  • Suitable for installation up to: IP23
  • Dielectric rigidity test: according to IEC standard
  • Frequency: 50-60Hz
  • Noninflammable nylon screw terminals connection

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The transformers are usually built for vertical/floor mounting, but they can be also built for horizontal/wall mounting.


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Vertical/floor mounting

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Horizontal/wall mounting


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