2000 kVA Dry-Type Transformer: Selection, Specifications, and Applications (Resin Cast | Cast Coil T

The 2000 kVA dry-type transformer is a medium-to-large capacity distribution transformer widely used in industrial manufacturing, rail transit, data centers, renewable energy plants, and large commercial complexes. As modern power systems increasingly demand higher safety, energy efficiency, and environmental performance, resin cast dry-type transformers are gradually replacing conventional oil-immersed transformers in medium-voltage distribution systems.

Compared with dry-type transformers below 1000 kVA, 2000 kVA units require higher standards for insulation design, heat dissipation, short-circuit withstand capability, and long-term operational reliability. Therefore, proper transformer selection and parameter matching are critical during project planning.

What Is a 2000 kVA Dry-Type Transformer?

A 2000 kVA dry-type transformer is a medium-voltage power distribution transformer with a rated capacity of 2000 kilovolt-amperes. It uses air cooling and solid insulation systems instead of insulating oil for insulation and heat dissipation. These transformers are commonly connected to 6 kV, 10 kV, 11 kV, or 20 kV power grids, with low-voltage outputs of 400 V or 415 V for industrial and commercial loads.

Because dry-type transformers do not use insulating oil, they eliminate risks related to oil leakage, explosion, and environmental contamination. They can be installed directly inside buildings, underground substations, and densely populated areas, making them increasingly popular in green building and smart grid projects.

Difference Between Resin Cast and Cast Coil Structures

The most common 2000 kVA dry-type transformer designs on the market are fully resin cast transformers and cast coil transformers with thin insulation structures. Each design has unique advantages in manufacturing process, cooling performance, and application environment.

Resin Cast Type (Fully Cast Structure)

Resin cast dry-type transformers use epoxy resin vacuum casting technology to completely encapsulate both high-voltage and low-voltage windings within solid insulation material.

This structure provides excellent mechanical strength and short-circuit resistance while effectively protecting the windings against moisture, dust, vibration, and corrosive gases. With an oxygen index typically above 40, these transformers offer excellent flame-retardant and self-extinguishing properties and comply with IEC 60076-11 F1 fire safety standards.

Partial discharge levels are generally controlled below ≤5 pC, ensuring high insulation reliability for long-term continuous heavy-load operation.

Typical applications include chemical plants, underground substations, coastal high-humidity areas, rail transit systems, and mission-critical infrastructure projects.

Cast Coil Type (Thin Insulation Structure)

Cast coil transformers also use epoxy resin technology, but the resin layer is thinner and retains certain air cooling channels around the windings. In some designs, only the high-voltage winding is resin cast, while the low-voltage winding uses copper foil construction with insulation coating.

This design offers better heat dissipation performance and lower temperature rise under natural air cooling conditions. It is also lighter in weight and more cost-effective than fully cast structures.

For indoor substations with relatively clean environments or budget-sensitive commercial projects, cast coil dry-type transformers remain a mature and reliable solution.

How to Choose the Right Structure?

For projects exposed to high humidity, dust, corrosive gases, or strict fire protection requirements, fully resin cast structures are recommended. For applications prioritizing cooling efficiency, overload capability, and cost control, cast coil transformers are also an excellent choice.

2000 kVA Dry-Type Transformer Technical Specifications

The above specifications support non-standard customization, including special voltage ratings, high-altitude correction, K-factor design, and low-noise solutions.

Typical Applications of 2000 kVA Dry-Type Transformers

Large Industrial Facilities

In steel mills, non-ferrous metallurgy plants, petrochemical facilities, and mining operations, 2000 kVA dry-type transformers are commonly used as core workshop distribution transformers powering large motors, compressors, and auxiliary systems.

The fully cast structure can effectively withstand vibration, dust, and corrosive gases, with a service life typically exceeding 30 years.

Data Centers and Communication Rooms

Data centers require extremely high power reliability and fire protection standards. A 2000 kVA transformer can support medium-to-large UPS systems and server room distribution networks.

Because dry-type transformers operate without oil, they eliminate risks associated with liquid leakage and fire hazards, making them highly suitable for modern data center infrastructure.

Urban Rail Transit

Metro systems, light rail networks, and underground transportation facilities widely use resin cast dry-type transformers. Underground environments often feature high humidity and limited ventilation, conditions where resin cast insulation performs exceptionally well.

Renewable Energy Systems

In photovoltaic power plants, wind farms, and energy storage systems, 2000 kVA dry-type transformers are commonly used for centralized power collection and medium-voltage step-up applications.

Their wide operating temperature range and maintenance-free design make them ideal for unattended remote power stations.

High-Rise Buildings and Commercial Complexes

Large shopping malls, skyscrapers, and hotel complexes often install substations inside the building. Dry-type transformers eliminate the need for separate oil pits and explosion-proof rooms while maintaining low noise levels for occupant comfort.

Key Questions Before Transformer Selection

Are There Large Nonlinear Loads?

UPS systems, variable frequency drives, rectifiers, and high-power electronic equipment generate harmonic currents that increase transformer heating. In such cases, K-factor transformers or higher capacity ratings are recommended.

What Are the Ambient Temperature and Altitude?

At altitudes above 1000 meters, reduced air density affects cooling efficiency, requiring derating adjustments. High-temperature environments may also require forced air cooling systems.

How Should Short-Circuit Impedance Be Selected?

Standard industrial systems typically use 6% impedance. Precision equipment requiring stable voltage may use 4% impedance, while large systems needing short-circuit current limitation may require higher impedance values.

Is On-Load Tap Changer (OLTC) Required?

For projects with long transmission distances or unstable grid voltage, OLTC systems can automatically regulate output voltage without interrupting power supply.

What Protection Class Is Required?

IP00 is suitable for dedicated substations, while IP20 or IP23 enclosures are recommended for industrial environments or personnel-accessible areas. Outdoor installations typically require higher weatherproof protection ratings.

Are International Certifications Required?

European export projects generally require CE marking and IEC 60076-11 compliance, while Middle Eastern, Southeast Asian, and African markets may require SGS, KEMA, or other third-party certification reports.

SCB10 vs SCB11 vs SCB13 Energy Efficiency Levels

SCB10 is currently the most widely used standard dry-type transformer series and meets basic national energy efficiency requirements.

SCB11 transformers reduce no-load losses by approximately 20% compared with SCB10 models, making them suitable for continuously operating industrial facilities.

SCB13 transformers use amorphous alloy core technology, reducing no-load losses by more than 70%. They are especially suitable for commercial buildings and rural power grids with long idle operating periods.

From a life cycle cost analysis (LCCA) perspective, SCB11 and higher energy-efficiency transformers can typically recover the additional investment within 3 to 5 years through electricity savings.

Advantages of Factory Direct Supply

Purchasing directly from a dry-type transformer manufacturer with complete R&D and production capabilities significantly reduces procurement and maintenance costs.

Factory direct supply eliminates intermediary markups, reducing bulk procurement costs by approximately 15%–30% while supporting flexible customization of voltage, capacity, enclosure type, protection level, and certifications.

Professional manufacturers can also provide full technical support, including transformer selection calculations, drawing review, installation guidance, and commissioning services. Each transformer is delivered with complete type test reports and factory inspection records for full quality traceability.

Get a Quote for 2000 kVA Dry-Type Transformers

Whether you require standard stock models or customized power distribution solutions, our engineering team can provide professional selection support and factory-direct quotations within 24 hours.

Please provide high-voltage and low-voltage ratings, installation location, environmental conditions, protection requirements, certification standards, and delivery schedule to receive an accurate technical proposal and quotation.

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