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34.5KV 225KVA Three Phase Pad Mounted Transformer

Engineered for robust industrial distribution, the 34.5 kV 225 kVA Three-Phase Pad-Mounted Transformer delivers dependable power in compact, weatherproof enclosures. Manufactured to CSA C227.4 and cUL standards, it steps down 34.5 kV Delta to 600Y/347 V with minimal losses—≤ 650 W no-load and ≤ 2 350 W full-load—while maintaining ≥ 99 % efficiency under normal conditions. Its KNAN cooling system combines oil circulation with natural air convection, ensuring stable operation at altitudes up to 1 500 m. With ANSI 70 light-gray paint and sealed compartments, it resists harsh outdoor environments while offering a total weight under 2 300 kg for streamlined pad mounting.

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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

225 kVA

Primary Voltage

34.5 kV Delta

Secondary Voltage

600Y/347 V

Vector Group

Dyn1

Frequency

60 Hz

Cooling Method

KNAN (Oil Natural Air Natural)

No-Load Loss

≤ 650 W

Full-Load Loss

≤ 2 350 W

Impedance

5.75 %

Insulating Oil Volume

1 040 L

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

Compact, Weatherproof Design

Sealed padmount enclosure with IP55 zoning and ANSI 70 finish stands up to rain, dust, and UV exposure.

High Efficiency & Low Losses

Optimized core and winding materials yield low no-load (≤ 650 W) and load (≤ 2 350 W) losses, reducing operating costs.

Advanced Safety Features

Integrated Buchholz relay, vacuum pressure gauge, and pressure relief valve deliver layered protection against faults.

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.

34.5KV Three Phase Pad Mounted Transformer 225KVA Three Phase Pad Mounted Transformer 34.5KV 225KVA Three Phase Pad Mounted Transformer

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