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150KV 120MVA 3 Phase Power Transformer

Introducing our 150KV 120MVA 3 Phase Power Transformer—an advanced, high-performance solution crafted for critical gas turbine projects. This conservator-type, oil-immersed transformer is built on a robust core design using high-conductivity copper windings, ensuring optimal energy transfer and exceptional reliability. The unit is equipped with a state-of-the-art 17-step on-load tap changer, facilitating precise voltage adjustments and seamless integration into demanding power systems. Engineered to operate under both natural and forced-air cooling modes (ONAN/ONAF), it delivers consistent performance in harsh environments while complying with the strict IEC standards. Designed for outdoor installation, its rugged construction and comprehensive protection features make it an ideal choice for modern power generation and distribution networks.

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Product Accessories

High & Low Voltage Bushings: Integrated with current transformers for enhanced monitoring.

On-Load Tap Changer Module: Includes the motor drive unit for precise adjustment of voltage levels.

Dual Oil Level Monitoring System: Featuring sensor feedback and digital indicators for real-time oil assessment.

Temperature Gauge Set: High-resolution winding and liquid temperature sensors for safety and performance tracking.

Buchholz Relay Assembly: Provides early fault detection and system protection.

Overpressure & Rapid Pressure Rise Protection Devices: Ensuring secure operation by mitigating transient pressure surges.

Conservator Unit: Constructed with a diaphragm and silica gel breather to manage oil expansion and contraction.

Oil Sampling and Drainage Valve Kit: Facilitates routine maintenance and ensures oil quality.

Installation Hardware: Includes lifting lugs, jacking pads, and anti-vibration components for secure mounting.

Data & Compliance Plate: Durable nameplates and diagram plates displaying key specifications and IEC conformity.

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Product Specifications

Rated Power

120 MVA (ONAN) expandable to 150 MVA with fan-assisted cooling

Primary Voltage

150 kV

Secondary Voltage

11 kV

Connection Configuration

YNd11

Tap Changer

17-step on-load tap changer providing ±8 × 1.25% voltage regulation

Cooling Mode

ONAN with an optional ONAF mode for enhanced thermal management

Core and Windings

Core-type construction featuring high-conductivity copper windings

Tank Design

Conservator-type with a bell-type steel tank ensuring durability and thermal efficiency

Frequency

50 Hz

Standards Compliance

Fully compliant with IEC standards for high-voltage power transformers in demanding applications

Product Applications

Economy is more affordable

Optimally designed for power plants driven by gas turbines, ensuring robust and stable voltage under variable loads.

Gas Turbine Generation
Enhances grid reliability by efficiently stepping down voltage in high-voltage transmission substations.

Utility Transmission Systems
Supports heavy industrial processes with consistent, high-quality power distribution for manufacturing and processing facilities.

Industrial Energy Networks
Serves as a critical component in renewable energy projects that require seamless interfacing between conventional and sustainable power sources.

Hybrid Renewable Integration

Product Advantages

Superior Efficiency

Delivers outstanding energy conversion with minimal losses through its advanced cooling system and premium materials.

Precision Voltage Regulation

The integrated 17-step tap changer offers fine control over voltage output, ensuring optimal performance in dynamic operational conditions.

Robust and Durable Construction

Engineered to withstand extreme environmental conditions while adhering to IEC standards, this transformer ensures longevity and reliability in critical power applications.

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.

150KV 3 Phase Power Transformer 120MVA 3 Phase Power Transformer 150KV 120MVA 3 Phase Power Transformer

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