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Pad-Mounted Transformer

All Bardeen’s pad-mounted transformers meet the latest ANSI/IEEE, DOE, and CSA standards.

Rated up to 34.5 kV and 10,000 kVA (ONAN cooling), they provide underground distribution power for commercial, industrial, and utility applications.

Engineered for outdoor concrete pad mounting, with sealed HV and LV compartments for maximum safety.

        

Customize from Our Standard Product Line

If you spot a near-match in our catalog, we can quickly modify our standard transformers for your application. Adjustments cover capacity, voltage class, cooling type and installation structure.

Build per Your Technical Documents

Send us your specifications or drawings. Our engineering team reviews the design, validates all key parameters with you, and manufactures strictly in accordance with international standards.

Full Custom Design from Concept to Completion

Without formal detailed specs? Share your ideas and functional requirements. We partner with you to develop fully customized transformer solutions, from electrical design and structural layout through to insulation system.

Request a Quote
  • Overview
  • Product Overview
  • Technical Innovations & Lifecycle Economics
  • Technical Data Table
  • FAQ
  • Transportation Services & Process

Overview

Pad‑mounted transformers integrate transformer, HV/LV distribution, and protection in one compact design. With high ingress protection, easy installation, and simple maintenance, they suit a broad range of applications
Bardeen Pad‑Mounted Transformer
Bardeen presents a versatile pad‑mounted transformer designed to meet the evolving demands of modern power distribution, grid modernization initiatives, renewable energy projects, and compact distribution architectures. The bardeen pad‑mounted transformer is engineered for reliability, safety, and space‑efficient installation, offering utility‑grade performance for urban, suburban, and industrial applications. By integrating advanced design features and robust manufacturing practices, the bardeen pad‑mounted transformer supports seamless power delivery, enhances operational flexibility, and enables efficient integration with renewable energy storage systems and compact substations.

Product Overview

Standard & Optional Features

Standard Feature:
» 60 Hz operation.
» 65° C average winding rise.
» Radial & loop feed arrangements.
» Dead and live front type of HV terminals.
» Three‑point latching for security
» Removable still
» Rigid steel partition between HV and LV.
» Permanent nameplate.
» Oil Filling Plug
» ANSI tank ground pads.
» Oil drain valve and sampler.
» Automatic pressure‑relief valve.
» Tap changer with +/-2*2.5% full capacity taps above and below nominal
» Painted Munsell Green Color (Munsell 7GY 3.29/1.5)
» Basic Accessories
Optional Feature:
» 50 Hz.
» Type II insulating mineral oil.
» High‑fire point oil, such as silicone, hydrocarbon or vegetable oil.
» 55° and 55°/65° C average winding rise.
» Copper and aluminum windings available.
» Dual high‑voltage ratings.
» Bayonet Fuses.
» Current limiting fuses.
» ELSP Fuses
» Bayonet fuse holders with and without flapper.
» Load‑break Switch
» Lightning Arresters.
» Stainless steel tank and cabinet construction
Product Features and Design Advantages
The bardeen pad‑mounted transformer leverages proven core‑and‑coil configuration and robust tank design to deliver long‑term operational stability. Constructed with high‑grade electrical steel and precision‑wound windings, each pad‑mounted transformer provides low‑loss performance and high thermal stability. The enclosure is designed for outdoor placement on a concrete pad, meeting safety and aesthetic requirements while minimizing the footprint needed for distribution equipment. Corrosion‑resistant finishes and weatherproof gaskets ensure the pad‑mounted transformer withstands harsh environmental conditions, enabling long service life in diverse climates.

Safety and accessibility are central to the bardeen pad‑mounted transformer design. With secure, tamper‑resistant access panels and lockable compartments, the pad‑mounted transformer meets utility standards for public‑facing installations. The pad‑mounted transformer includes integrated safety interlocks, pressure relief devices, and advanced insulation systems to limit maintenance needs and reduce operational risks. The pad‑mounted transformer’s low‑noise winding geometries and vibration control further enhance suitability for residential and commercial neighborhoods where acoustic performance is important.

Technical Innovations & Lifecycle Economics

Technical Innovations & Lifecycle Economics

Applications and System Integration
Bardeen’s pad‑mounted transformer supports a wide range of applications across distribution networks, Microgrids, renewable energy storage installations, and compact substation deployments. In distribution networks, the pad‑mounted transformer is an ideal solution for connecting medium‑voltage feeders to low‑voltage customer circuits, delivering dependable voltage regulation and efficient power transfer. For grid modernization projects, the pad‑mounted transformer can be integrated with smart monitoring, communications, and control systems to enable predictive maintenance and grid modernization resilience enhancements.
Innovations and Technical Differentiators
- Thermal Management: Advanced thermal modeling and optimized cooling pathways allow the pad‑mounted transformer to maintain peak performance under elevated ambient temperatures and high load cycles.
- Loss Reduction: The pad‑mounted transformer uses high‑efficiency core materials and low‑loss conductor options to reduce no‑load and load losses, contributing to reduced operational expenses over the asset lifecycle.
- Dielectric Safety: Bardeen offers a range of dielectric fluid choices for the pad‑mounted transformer, including low‑flammability and environmentally friendly alternatives, to meet regional safety regulations and sustainability goals.
- Grid Modernization Readiness: Integration‑ready designs for grid modernization are a hallmark of the bardeen pad‑mounted transformer. Factory‑fitted sensors and optional supervisory controls enable easy connection to SCADA or distribution management systems, supporting remote temperature monitoring, oil‑level sensing, and fault detection.
- Predictive Control: These features allow operators to implement condition‑based grid modernization maintenance strategies that extend the pad‑mounted transformer operational life and reduce unplanned outages.
- Renewable Optimization: For renewable energy storage use cases, bardeen provides tailored tap‑changer options and harmonics‑mitigating designs to ensure compatibility between the pad‑mounted transformer, power electronic interfaces, and battery inverters, optimizing overall renewable energy storage efficiency.
Customization and Manufacturing Quality
Bardeen Equipment Co., Ltd., the manufacturer behind the bardeen pad‑mounted transformer, brings extensive experience producing IEC‑certified high‑voltage equipment, including 220kV transformers. This manufacturing pedigree ensures that every pad‑mounted transformer benefits from rigorous quality control, traceable materials sourcing, and compliance with international standards. Bardeen offers customization options for primary voltage ratings, secondary configurations, cooling classes, and enclosure specifications to meet project‑specific requirements.
Operational Benefits and Lifecycle Economics
Investing in a bardeen pad‑mounted transformer yields operational benefits that translate to lower total cost of ownership:
- Lower Energy Losses: High‑efficiency core materials and optimized winding designs reduce energy losses, improving lifecycle economics particularly in heavily loaded circuits and renewable energy storage dispatch scenarios.
- Reduced Maintenance: The pad‑mounted transformer robust enclosure and protective features minimize maintenance frequency and reduce field service costs.
- Targeted Interventions: Integration of condition‑monitoring options for grid modernization lowers lifecycle expenses by enabling targeted interventions and extending service intervals for the pad‑mounted transformer.
- Scalable Deployments: For utilities pursuing grid modernization, bardeen pad‑mounted transformer units provide a modular and scalable solution for incremental upgrades.
- Grid Resilience: Deploying pad‑mounted transformer equipment in targeted locations supports distributed intelligence and resiliency, enabling faster restoration after disturbances and better accommodation of distributed energy resources.
- Harmonic Stability: In renewable energy storage installations, the pad‑mounted transformer reliable voltage transformation and harmonic‑aware design enhance the performance of battery systems, ensuring renewable energy storage injection and grid‑support functions operate effectively.
Technical Innovations & Lifecycle Economics

Technical Data Table

Technical Data Table

Rated Capacity - kVA High Voltage - kV Low Voltage - V Connection Group Efficiency DOE - % Efficiency CSA - % Dimensions W×D×H - inch Weight - lbs
150 4.16, 12.47, 13.2, 13.8, 24.94, 34.5, 44 or others 208/120, 415/240, 480/277, 600/347, 4160 or others Dyn1, Yyn0, Dyn11, Dd0, YNd11 or others 99.16 99.09 68×45×50 2700
300 99.27 99.21 72×57×50 3500
500 99.35 99.30 89×53×50 4600
1000 99.43 99.38 89×56×64 8200
1500 99.48 99.44 89×86×73 10000
2000 99.51 99.47 72×87×73 12500
2500 99.53 99.49 72×99×73 15000
3000 — 99.51 84×99×73 16000
3750 — — 85×108×84 19500
5000 — — 96×108×84 25000

FAQ

Frequently Asked Questions

Frequently Asked Questions

Transportation Services & Process

Transportation Services & Process

1. Heavy‑Lift & OOG Expertise

Specialized handling for Over‑Out‑of‑Gauge (OOG) cargo. We manage the entire process for heavy transformers, from custom crating and vacuum packaging to flat‑rack, break‑bulk, or Ro‑Ro shipping.

2. Customs & Compliance Management

Expert handling of complex export/import documentation, HS codes, and destination country regulations. We ensure smooth customs clearance to avoid costly delays.

3. Real‑Time Visibility & Risk Control

24/7 GPS tracking and milestone updates. Comprehensive cargo insurance covering all risks from origin warehouse to destination site.

4. Emergency Response

Prioritized air freight and expedited sea options for critical breakdowns. We minimize downtime by getting your replacement transformer or parts there faster.

Process

1

Assessment & Planning

We analyze the dimensions, weight, and route to design the optimal transport plan.

2

Professional Packaging

Seaworthy packing

3

Multimodal Transit

Execution of sea/air/land transport with strict handling protocols.

Need urgent after‑sales logistics support? Contact our global service team for a tailored quotation.

Pad-Mounted Transformer

All Bardeen’s pad-mounted transformers meet the latest ANSI/IEEE, DOE, and CSA standards.

Rated up to 34.5 kV and 10,000 kVA (ONAN cooling), they provide underground distribution power for commercial, industrial, and utility applications.

Engineered for outdoor concrete pad mounting, with sealed HV and LV compartments for maximum safety.

        

Customize from Our Standard Product Line

If you spot a near-match in our catalog, we can quickly modify our standard transformers for your application. Adjustments cover capacity, voltage class, cooling type and installation structure.

Build per Your Technical Documents

Send us your specifications or drawings. Our engineering team reviews the design, validates all key parameters with you, and manufactures strictly in accordance with international standards.

Full Custom Design from Concept to Completion

Without formal detailed specs? Share your ideas and functional requirements. We partner with you to develop fully customized transformer solutions, from electrical design and structural layout through to insulation system.

Request a Quote

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