2500 kVA Three Phase Oil-Filled Pad Mounted Transformer Features
The 2500 kVA pad mounted transformer is a high-performance, oil-filled distribution unit designed for three-phase power transformation in demanding environments. Built to ANSI and IEEE standards, this utility-grade pad mount transformer efficiently steps down 13.8 kV primary voltage to 480Y/277 V secondary voltage, making it ideal for commercial, industrial, and municipal distribution systems across North and South America.
Whether you're planning an energy infrastructure upgrade, sourcing equipment for a substation, or integrating power into a campus or data center, this 2500 kVA distribution transformer offers a powerful, compact, and outdoor-ready solution.
Learn More:1000 kVA Three Phase Oil Filled Pad Mounted Distribution Transformer, 13.8 kV to 480Y/277 V
2500 kVA 3 Phase Oil-Filled Pad Mounted Transformer Technical Specs
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Rated Power | 2500 kVA (Customizable from 500 kVA up to 10,000 kVA) | Frequency | 60 Hz |
| Phase | Three Phase | Cooling Method | ONAN (Oil Natural Air Natural), ONAF (optional for higher loads) |
| Primary Voltage | 13.8 kV Wye (Other voltage ratings available: 4.16 kV to 15 kV, Delta or Wye) | Secondary Voltage | 480Y/277 V standard (Alternatives include 208Y/120 V, 240 V, 600Y/347 V) |
| Tap Changer | ±2 × 2.5% standard; options for ±4 × 2.5% available (On-load or Off-load) | Temperature Rise | 65°C standard; optional 55°C or 75°C available |
| Noise Level | ≤ 62 dB at 1 meter | Altitude | Designed for operation up to 1000 m above sea level; derating recommended above |
| Enclosure Type | Pad-mounted, dead-front, tamper-resistant design available | Enclosure Material | Heavy gauge steel with durable powder coating; stainless steel optional |
| Dielectric Fluid | Environmentally safe mineral oil with fire-resistant and biodegradable properties | Ingress Protection | NEMA 3R or NEMA 3S; ANSI C57.12.34 compliant |
| Standards Compliance | ANSI C57.12.00, ANSI C57.12.34, IEEE, CSA, DOE 2016 energy efficiency compliant | Efficiency | Meets or exceeds DOE 2016 and CSA C802.1 efficiency requirements |
| Impedance | Approximately 5.5% (±7.5%) | Winding Material | Copper standard; aluminum windings optional |
| Approximate Weight | 2700–3000 kg depending on configuration | Dimensions (L×W×H) | Approximately 1800 × 1400 × 1500 mm; customizable on request |
| Operating Temperature | -40°C to +55°C | Optional Accessories | Bayonet fuse kits, pressure relief valve, oil drain valve, thermometer, oil level indicator, lifting lugs |
| Typical Power Range | 500 kVA to 10,000 kVA | Primary Voltage Options | 4.16 kV, 7.2 kV, 12.47 kV, 13.8 kV, 15 kV |
| Secondary Voltage Options | 208Y/120 V, 240 V, 480Y/277 V, 600Y/347 V | Tap Changer Range | ±2 × 2.5%, ±4 × 2.5%; both On-load and Off-load variants available |
| Noise Level Range | 58 dB to 65 dB depending on model and load conditions | Cooling Methods | Standard ONAN; optional ONAF cooling available |
| Enclosure Variants | NEMA 3R, NEMA 3S, stainless steel enclosures available | Winding Options | Copper (standard), aluminum (optional) |
| Weight Range | 2500 kg to 3200 kg depending on options and configuration | Operating Altitude | Standard operation up to 1000 m; high-altitude units can be supplied |
| Certifications | UL Listed, cUL, CSA, CE, SGS | Applicable Standards | ANSI, IEEE, CSA, DOE, IEC |
What are the typical 2500 kVA pad mount transformer dimensions and weight?
The estimated size of a 2500 kVA pad mounted transformer is approximately 102" (L) × 72" (W) × 86" (H), though exact dimensions vary depending on manufacturer specifications and optional features. The total weight typically ranges from 8,000 to 9,500 lbs, including oil-filled cooling systems. For precise measurements and CAD drawings tailored to your project’s voltage and configuration, please contact our technical team.
What is the 2500 kVA transformer amps rating?
At a standard secondary voltage of 480Y/277 V, the full-load current (amps) of a 2500 kVA transformer is roughly 3000 amps on the secondary side. This makes it suitable for large commercial, industrial, and utility power distribution applications.
Read More:2500 kVA Substation Step-Down Transformer | 33kV to 11kV Oil-Filled Power Transformer
How much does a 2500 kVA pad mounted transformer cost?
Transformer pricing depends on many factors such as primary and secondary voltage configurations, tap changer options, accessories like bayonet fuses and surge arresters, and oil type (mineral oil vs. biodegradable FR3). Typical 2500 kVA transformer cost ranges between $26,000 and $42,000 USD per unit. Bulk orders or custom specifications may affect final pricing. Contact us for an exact quote including shipping and lead time.
How does a 2500 kVA pad mounted transformer ensure reliable performance in harsh outdoor environments?
Our 2500 kVA pad mounted transformers are designed with robust, weather-resistant steel enclosures featuring powder-coated finishes to prevent corrosion and withstand UV exposure. The oil-filled cooling system (ONAN) maintains optimal temperature under continuous load, while pressure relief valves and temperature gauges ensure safe operation. These transformers comply with NEMA 3R or NEMA 3S ingress protection standards, guaranteeing protection against rain, dust, and other environmental challenges commonly found in North and South American outdoor installations.
How much oil capacity does a 2500 kVA transformer require?
Oil capacity varies with design, but typical 2500 kVA transformer oil capacity ranges between 250 to 350 gallons of high-quality mineral oil or environmentally friendly FR3 fluid, ensuring proper dielectric strength and thermal management.
What is the impedance rating for a 2500 kVA transformer?
The 2500 kVA transformer impedance is usually around 5.5% to 6%, which affects voltage regulation and short-circuit currents. Impedance can be customized within ±7.5% tolerance based on project requirements.
Where can I find 2500 kVA pad mounted transformers for sale?
Our company offers direct factory supply of 2500 kVA pad mounted transformers, serving clients across North and South America including the U.S., Canada, Mexico, Brazil, and Colombia. We provide standard and custom models, fast delivery, OEM branding, and technical support for utility, commercial, and industrial applications.
Why choose our 2500 kVA pad mount transformer?
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ANSI and IEEE certified, meeting all North American and South American electrical standards
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High-efficiency design compliant with DOE 2016 regulations
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Rugged, weatherproof outdoor enclosure suitable for harsh environments
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Flexible voltage and connection options for varied distribution networks
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Competitive pricing with volume discounts and long-term supply contracts
Learn More:1500 kVA Pad Mounted Transformer – 3 Phase Outdoor Distribution Transformer
Why Choose the Energy 2500 kVA Pad Mounted Transformer
Energy Transformer's 2500 kVA three-phase oil-filled pad-mounted transformer is a dependable power solution designed for demanding commercial, industrial, and utility distribution networks throughout North and South America. Featuring a 13.8 kV Wye primary and 480Y/277 V secondary, this transformer provides efficient voltage step-down for safe and consistent power delivery.
Built specifically for outdoor applications, it includes a rugged, tamper-resistant NEMA 3R-rated enclosure that withstands harsh weather, high traffic, and public installation environments. The sealed oil-filled tank combined with environmentally friendly dielectric fluid ensures durability, safety, and extended operational lifespan.
Key Benefits Include:
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Superior Performance: Fully compliant with ANSI, IEEE, DOE, UL, and CSA standards to guarantee high efficiency, reliability, and regulatory adherence.
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Versatile Installation: Supports multiple connection types, including radial and loop feed, with options for live-front or dead-front access configurations.
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Customizable Options: Choose between copper or aluminum windings, tap changers, surge protection devices, and tailored configurations to meet specific project demands.
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Quiet and Energy Efficient: Designed to minimize noise and maximize energy savings, making it suitable for urban, commercial, and residential zones.
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Wide Market Compatibility: Manufactured to meet electrical codes and operational needs across the U.S., Canada, Mexico, Brazil, Argentina, Colombia, and other countries throughout the Americas.
Ideal for use in utility substations, industrial plants, renewable energy sites, and large-scale commercial facilities, the Energy 2500 kVA pad mounted transformer delivers robust, efficient, and highly configurable power distribution.
Contact us today for competitive pricing, product availability, or to request a customized quote tailored to your next project's specifications.
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