Skip to content
Trafovia/Transformers/Dry-type transformers
Transformers

Dry-type transformers

Cast-resin dry-type configurations for indoor power distribution. Coordinate electrical performance, enclosure, ventilation and access as one design brief.

Technical overview ↓Product guide ↗
Illustration: Cast-resin dry-type transformers
Product illustration · configuration varies by project
Application & selection

Indoor installation starts with the surroundings.

Commercial buildingsData centresIndustrial facilities

Key information for configuration review

  • Rating (kVA) and quantity
  • Primary and secondary voltage
  • Enclosure IP rating and cable entry (top or bottom)
  • Loss limits
Technical overview

Start with the
right specification.

Use this selection reference to prepare your project brief.

Reference values are not a model datasheet. Availability, standards and test coverage require confirmation for the offered equipment.

Download project sheets ↓
Selection reference +
Rated power, reference100 kVA to 2,500 kVA (larger subject to manufacturer confirmation)
Primary voltage11, 22, 33 kV
Secondary voltage400/230 V or 415/240 V
Vector groupDyn11 (others to specification)
CoolingAN; AF with fans for temporary overload
Insulation classF or H
Climatic, environmental, fire classesC2, E2, F1 per IEC 60076-11, when specified
EnclosureIP00 (no enclosure), IP21, IP23 or higher
MonitoringPT100 sensors and temperature controller with alarm and trip contacts
Testing topics to confirm +

Confirm the applicable requirements, available reports and agreed test scope with the proposed manufacturer.

Routine tests (every unit)Winding resistance; ratio and phase displacement; impedance and load loss; no-load loss and current; applied and induced voltage; partial discharge measurement (IEC 60076-11)
Type tests (per design)Temperature rise; lightning impulse; C2, E2 and F1 class tests where the specification requires them
Project document package +
  • Model-specific datasheet and approved drawings
  • Applicable test reports and their coverage
  • Inspection, packing and delivery requirements
Manufacturing & quality →

Related equipment

Illustration: LV switchboards

LV switchboards

Main distribution and motor-control assemblies.

Explore product
Illustration: Prefabricated substations

Prefabricated substations

Walk-in enclosures organised around the site layout.

Explore product
Illustration: Oil-immersed transformers

Oil-immersed transformers

Outdoor and utility distribution. Hermetic and conservator configurations.

Explore product
Request a quotation

Send us your
requirement.

Ratings, quantities and destination are enough to start. Attach nothing here: we reply by email and ask for drawings or the tender schedule when needed.

Or email sales@trafovia.com. We reply within one working day (Beijing time).

We use your details only to answer this enquiry. See our privacy policy.

Project resources

Bring your next project
into focus.

Explore the equipment guide and prepare your requirements with our fillable project sheets.

Explore resources ↗Prepare a brief →