Dry-Type Transformer

VPI Dry-Type Transformer

A vacuum-pressure-impregnated dry-type transformer offering flexible winding design for indoor distribution and industrial loads.

Rated voltage: Up to 15 kV typical
Capacity range: 50–5000 kVA
Standards basis: IEC 60076-11
Typical application: industrial facili…

Request a quote → View technical data ↓

Technical product selection

Typical Use

Where this product is used

industrial facilities, commercial buildings and controlled indoor environments

Technical Data

Typical technical parameters

The published values define the normal selection range. Final ratings and interfaces are confirmed against the approved single-line diagram and destination requirements.

Design standardIEC 60076-11

ConfigurationIndoor and critical-power applications

Applicable standards

IEC 60076-11

Rated voltage

Up to 15 kV typical

Rated capacity

50–5000 kVA

System frequency

50 Hz or 60 Hz, as specified

Winding system

Open ventilated enclosure; copper or aluminum winding; harmonic design options

Cooling

AN or AF

Enclosure

Open or IP-rated enclosure according to the installation

Environmental classes

Specified according to installation and applicable standard

Application

industrial facilities, commercial buildings and controlled indoor environments

Ambient and altitude

Confirmed from site conditions

Testing and inspection

Routine tests plus agreed type, special and third-party inspection requirements

Documentation

Drawings, data sheets, test reports, manuals and packing documents

These values are for product selection. Final guaranteed values are confirmed in the approved technical agreement.

Configuration

Details to confirm before production

Confirm these items so the quotation and product design match your project.

Insulation system

Choose cast-resin or VPI construction from fire performance, humidity, contamination, maintenance and lifecycle requirements.

Enclosure and ventilation

Confirm IP/NEMA enclosure, room ventilation, air inlet temperature and required clearance.

Load quality

State harmonic spectrum, K-factor, rectifier or UPS duty and expected overload cycle where nonlinear loads are present.

Noise and location

Provide the room arrangement, occupied-space limits and any reduced-sound requirement.

Normal supply

Typical standard equipment

AN cooling and temperature sensors
Core and coil assembly
HV/LV terminals and tapping links
Earthing terminals and rating plate
Lifting provisions

Project options

Common optional equipment

Forced-air cooling fans
IP-rated or NEMA enclosure
Space heaters and anti-condensation control
Winding temperature monitor with communications
Electrostatic shield
Anti-vibration pads and reduced-sound design

Testing and Documents

Tests and documents supplied with the product

The required tests and documents are confirmed before the order is placed.

Routine verification

Tests required for each completed unit under the selected product standard.

Design and type evidence

Applicable type-test evidence or agreed design verification is reviewed during technical approval.

Special verification

Partial discharge, sound level, temperature rise, harmonic-duty evaluation or enclosure verification can be specified.

Document package

Approved drawings, data sheets, test reports, manuals, packing list and agreed quality records.

A vacuum-pressure-impregnated dry-type transformer offering flexible winding design for indoor distribution and industrial loads.

Product overview

VPI Dry-Type Transformer is configured for industrial facilities, commercial buildings and controlled indoor environments. Apex coordinates technical review, qualified production, documentation and export delivery according to the approved project requirements.

Applications

industrial facilities, commercial buildings and controlled indoor environments. Final design considers the system study, load profile, fault level, installation environment, efficiency targets and local grid requirements.

Quotation Information

What to include with your inquiry

Send the information you already have. Unknown items can be confirmed during technical review.

Rated power (kVA)
Primary and secondary voltages
Cast-resin or VPI construction
Enclosure and IP rating
Cooling method
Indoor environment and altitude
Applicable standard
Quantity
Destination country and delivery location

FAQ

Questions buyers usually ask

Cast resin or VPI: how should the construction be selected?

Cast resin is often selected where moisture, contamination and fire performance are decisive. VPI offers an open, maintainable winding system for clean indoor environments and project-specific duty.

Which standard should be stated in the RFQ?

Use the project or utility standard stated in the specification. Where it is not defined, send the destination, system voltage and application so the appropriate IEC or ANSI/IEEE basis can be proposed.

Are guaranteed values the same as the website values?

No. Website values are selection guidance. Guaranteed performance is stated in the approved technical data sheet and commercial offer.

What information helps Apex respond faster?

A single-line diagram, load data, voltage ratio, capacity, quantity, installation conditions, destination and required delivery date provide the best starting point.

Applications

Choose equipment for the site and operating conditions.

View Applications →

Technical Articles

Product selection and application guides.

View Technical Articles →

TECHNICAL ARTICLE

Ready to request a quotation?

Send the product details and attach a specification or single-line diagram when available.

Send Your Requirements →

VPI Dry-Type Transformer

Where this product is used

Typical technical parameters

Details to confirm before production

Insulation system

Enclosure and ventilation

Load quality

Noise and location

Typical standard equipment

Common optional equipment

Tests and documents supplied with the product

Routine verification

Design and type evidence

Special verification

Document package

Product overview

Applications

What to include with your inquiry

Questions buyers usually ask

Choose equipment for the site and operating conditions.

Product selection and application guides.

The Minimum Data Needed for a Reliable Transformer RFQ

Transformer Tests and Documentation Buyers Should Request

Compact Substation Layout: Design Before Packaging

Ready to request a quotation?

Where this product is used

Typical technical parameters

Details to confirm before production

Insulation system

Enclosure and ventilation

Load quality

Noise and location

Typical standard equipment

Common optional equipment

Tests and documents supplied with the product

Routine verification

Design and type evidence

Special verification

Document package

Product overview

Applications

What to include with your inquiry

Questions buyers usually ask

Compare within this product family.

Cast Resin Dry-Type Transformer

Choose equipment for the site and operating conditions.

Product selection and application guides.

The Minimum Data Needed for a Reliable Transformer RFQ

Transformer Tests and Documentation Buyers Should Request

Compact Substation Layout: Design Before Packaging

Ready to request a quotation?