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6KV and 10KV 1000kVA Ecodesign Power Transformer

The 1000 kVA Ecodesign Power Transformer (6 kV / 10 kV primary options) is a sealed-tank, oil-filled distribution transformer engineered for outdoor installation where low maintenance, high efficiency and regulatory compliance matter most. Built around a compact hermetic tank (no external conservator) and optimized for ONAN cooling, it delivers reliable 1 MVA class service for medium-voltage distribution, industrial plants and energy storage hubs.

This model was designed to meet the latest Ecodesign efficiency tiers for power transformers, reducing no-load and load losses over legacy units, while keeping audible noise and footprint down for urban and industrial sites. Construction follows internationally accepted transformer practices (IEC-based design and testing), with porcelain or plug-in terminations, remotely accessible monitoring contacts, and a user-centric marshalling/control cabinet for alarm and fan control.

The hermetic (sealed) tank approach eliminates conservator maintenance, lowers moisture ingress risk, and simplifies shipping and installation in constrained sites—advantages that translate into lower lifecycle operating costs.

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Product Accessories

Digital Supervisory Interface: Monitors transformer performance in real time.

Automated Load Tap Adjustment Module: Enables seamless voltage control under varying loads.

Oil Filtration & Condition Assessment Kit: Optimizes oil purity and insulation integrity.

High-Voltage Terminal Block Assembly: Provides secure, customized connectivity.

Dual Thermal & Pressure Sensor Suite: Continuously tracks operational conditions.

Vibration Absorption Isolation Kit: Minimizes mechanical stress for enhanced durability.

Surge Voltage Suppression Unit: Protects against transient overvoltage events.

Advanced Data Logging System: Records operational metrics for performance analysis.

Robust Grounding & Bonding Assembly: Ensures safe, reliable installation.

Comprehensive Installation & Maintenance Guide: Offers detailed support for setup and upkeep.

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Product Specifications

Rated Power

1000 kVA (continuous)

Primary (HV) Options

6.0 kV Delta or 10.0 kV Delta (selectable at order)

Secondary (LV)

400 V Wye (or 415 V Wye – factory selectable)

Connection Group

D/Yn11 (Dyn/ DYn11 vector group for correct phase shift and neutral grounding behavior)

Cooling Method

ONAN (Oil Natural Air Natural) — hermetic sealed-tank design

Tap Range

±2 × 2.5% (5-position tap switch on HV) for on-site voltage adjustment

Impedance

6.0% (nominal; factory-set to match short-circuit and protection coordination)

Losses

Low-loss design to meet Ecodesign Tier 2 targets (engineered for markedly reduced no-load and load losses versus older units)

Noise Level

Designed ≤ 63 dB(A) at 1 m under rated conditions (suitable for suburban installations)

Standards & Certification

Designed and tested to IEC 60076 series (type & routine tests), CE marking and relevant local approvals

Product Applications

Economy is more affordable

Supports reliable power distribution for railways, metro systems, and airport transit hubs.

Critical Transportation Networks
Supplies consistent, high-quality power for manufacturing and processing plants.

Heavy Industrial Facilities
Seamlessly integrates wind and solar installations into existing grids.

Distributed Renewable Energy Systems
Enhances city grid stability with precise voltage regulation.

Urban High-Voltage Substation Upgrades

Product Advantages

Ecodesign-Grade Efficiency (Lower OPEX)

Specified to meet contemporary Ecodesign efficiency levels for power transformers, this unit reduces both no-load and load losses, cutting long-term energy cost and carbon footprint for large fleets of transformers.

Hermetic / Sealed Tank = Low Maintenance & Higher Reliability

Elimination of an exposed conservator and associated breathing components reduces moisture ingress and maintenance visits. The sealed design minimizes oil top-up needs and simplifies transport and installation logistics.

Standards-based Design for Fast Project Approval

Built and tested to IEC 60076 series (type & routine tests) and CE/EU expectations, easing grid-connection approvals and ensuring predictable in-service behavior in a wide range of climates.

WellDone Power Transformer Plan Drawing

FAQ

What range of transformer products do you offer and which standards do they meet?

We manufacture a diverse array of transformers including Oil-Immersed Distribution Transformers, Dry Type Transformers, Power Transformers, Three Phase Pad Mounted Transformers, Single Phase Pad Mounted Transformers, Substation Transformers, and Pole Mounted Transformers. Our technical team, with nearly 20 years of industry experience, ensures that our designs comply with international standards such as ANSI, IEEE, DOE, CSA, AS, AZS, GOST, IEC, and more. Additionally, many of our products have obtained UL, cUL, and CSA certifications, affirming their safety and performance in global markets.
How do you ensure the quality and reliability of your transformers?

Our transformers are produced under a rigorous quality management system covering every stage from material selection to final testing. Each product comes with a minimum 24-month warranty, ensuring long-term safety and reliability. This commitment to quality has earned the trust of global customers and leading industry players.
What are your production lead times, customization options, and global market reach?

For standard models, our production lead time is typically 10 to 25 days, and we offer flexible OEM/ODM services for customized projects. We also tailor packaging solutions to meet specific customer requirements. Our transformers are exported worldwide—including North America, Europe, South America, Australia, Asia, and Africa—with successful partnerships involving renowned companies. For more details or personalized support, please contact us via email or WhatsApp.