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5000kVA Skid Mounted Substation Transformer

The 5000 kVA Skid-Mounted Substation Transformer is a turnkey solution for rapid deployment in medium-voltage distribution networks. Housed on a heavy-duty skid frame, it steps down primary voltages up to 44 kV to 4.16 kV (or custom secondary levels) with ±5 % on-load tap adjustment (41.8 – 46.2 kV range). Built to CSA C88 and UL/cUL standards, its conservator tank with silica-gel breather maintains oil purity, while ONAN cooling supports continuous 5 MVA operation. Crafted for outdoor installations—from EV charging stations to data centers and renewable energy plants—this transformer delivers reliable performance, low maintenance, and straightforward skid-mounted integration for projects requiring fast, modular substation builds.

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Product Accessories

Integrated Control & Protection Panel
Prewired relays, metering CTs, and ground-fault detection in a NEMA 3R enclosure.

Buchholz & Pressure Relays
Twin-float gas/oil surge detection and vacuum/pressure monitoring for fault protection.

On-Load Tap Changer (OLTC)
Motor-driven, ±5 % regulation with position indicator for live voltage tuning.

Conservator Tank & Breather
Silica-gel desiccant keeps oil dry; magnetic level gauge signals low-oil alarms.

HV/LV Bushing Assemblies
Porcelain bushings rated to 250 kV/75 kV BIL with integral cable termination kits.

Radiators & Cooling Fans
Bolt-on, galvanized radiators and auto-start fans for effective ONAF cooling stage.

Grounding & Lifting Hardware
Stainless-steel grounding lugs, forklift pockets, and skid mounting brackets.

Drain & Sampling Valves
Bottom-mounted valves for safe oil testing and maintenance without tank entry.

Nameplates & Wiring Diagrams
Durable data plates and laminated schematics for easy reference.

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Product Specifications

Rated Power

5 000 kVA (ONAN) / 5 500 kVA (ONAF)

Primary Voltage

44 kV (up to 46.2 kV max tap)

Secondary Voltage

4.16 kV (customizable to 2.4 – 13.8 kV)

Tap Changer

OLTC, ±5 % in 5 steps

Cooling Method

ONAN (standard), ONAF (optional)

Frequency

60 Hz

Impedance

6.5 %

BIL Rating

250 kV (HV) / 75 kV (LV)

Oil Volume

3 133 L

Total Weight

15 800 kg

Product Applications

Economy is more affordable

Product Advantages

Skid-Ready Deployment

Factory-installed on a transport frame for minimal onsite assembly and rapid commissioning.

Flexible Cooling & Capacity

ONAN design handles 5 MVA continuous loads; optional ONAF fans boost capacity by 10 %.

Integrated Protection & Control

Prewired panels and relays cut field wiring errors and accelerate startup schedules.

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.

5000kVA Skid Mounted Transformer 5000kVA Substation Transformer 5000kVA Skid Mounted Substation Transformer

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