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10/12.5MVA (10000kVA) Skid Mounted Substation Transformer

The 10/12.5 MVA (10,000 kVA) Skid-Mounted Substation Transformer is a turnkey solution for rapid deployment of medium-voltage distribution systems. Engineered to CSA C88-16 and IEEE C57 standards, this unit accommodates primary voltages up to 46 kV and steps down to 13.8 kV or other custom secondary voltages. Housed on a robust skid frame, it features ONAN cooling for continuous 10 MVA operation and can be uprated to 12.5 MVA with slight forced-air assistance. With a compact footprint and factory-integrated control and protection assemblies, it delivers reliable performance for utility grids, EV charging stations, BESS sites, Bitcoin mining farms, and industrial campuses—all under UL/cUL certification.

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Product Accessories

Integrated Control & Relay Panel: Prewired protective relays, metering, and ground‐fault detection for plug-and-play installation.

Oil Conservator with Breather: Sealed tank with silica‐gel breather and magnetic oil‐level gauge to maintain fluid integrity.

Buchholz & Pressure Relays: Twin‐float Buchholz for gas/oil surge detection and pressure‐vacuum gauge for tank monitoring.

On-Load Tap Changer (Optional): ±8×1.25 % HV side regulation for remote voltage adjustment.

HV/LV Bushing Assemblies: Porcelain bushings rated to 46 kV HV and 13.8 kV LV, complete with integral CTs.

Cooling Fans & Radiators: Bolt-on forced‐air fans and detachable radiators for easy maintenance.

Cable Termination Kits: Sealed cable boxes and lugs for HV and LV feeder connections.

Skid Frame & Lifting Lugs: Predrilled mounting points, forklift pockets, and eyebolts for safe transport and placement.

Grounding Bar & Connectors: Stainless‐steel grounding bus and hardware for rapid site earthing.

Nameplates & Documentation: Durable data plates with wiring diagrams, factory test certificates, and O&M manuals.

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Product Specifications

Rated Power

10 MVA (ONAN) / 12.5 MVA (ONAF)

Primary Voltage

up to 46 kV

Secondary Voltage

up to 13.8 kV

Frequency

50/60Hz

Cooling Method

ONAN (standard) / minor forced‐air

Vector Group

YNd1

No-Load Loss

≤ 1,200 W

Full-Load Loss

≤ 12,500 W

Impedance

6 % ± 10 %

Oil Volume

3,133 L

Product Applications

Economy is more affordable

Product Advantages

Skid-Ready Installation

Fully factory-assembled on a transport frame for minimal onsite labor and fast commissioning.

Flexible Load Rating

Dual-mode cooling allows 25 % capacity boost during peak demand without equipment modification.

Integrated Protection & Control

Prewired panels and relays reduce field wiring errors, enhance safety, and speed up startup.

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.

10000kVA Skid Mounted Substation Transformer 10/12.5MVA Skid Mounted Substation Transformer 12.5MVA Skid Mounted Substation Transformer

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