500 kVA 3-Phase Padmount Transformer
A 500 kVA transformer is widely used in commercial buildings, industrial facilities, and AI-driven infrastructure where dependable three-phase power and moderate growth capacity are required. This size provides an optimal balance between footprint, cost, and load headroom, making it one of the most commonly specified pad-mounted distribution units in the industry.
Giga supplies three-phase pad-mount transformers engineered for maximum service life, safe utility interface, and full IEEE/NEMA compliance. Whether you are supporting a new commercial development, upgrading manufacturing capacity, or deploying edge AI compute infrastructure, this page outlines common applications, voltage configurations, and sizing considerations so you can move confidently into the quoting process.
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Applications and common use cases for a 500 kVA transformer
A 500 kVA transformer is the standard choice for facilities where power demand exceeds small commercial capacity but does not yet require substation-scale equipment.
In AI and distributed data center environments, a 500 kVA transformer can support server loads, cooling systems, and UPS infrastructure while maintaining flexibility for phased expansion. It is often deployed as part of a modular strategy where multiple units provide both redundancy and a scalable path for growth.
As part of our broader lineup of three-phase pad-mount transformers, this capacity is frequently used for both new construction and infrastructure replacement projects.
Common applications include:
- Mid-sized commercial office buildings
- Retail centers and grocery stores
- Light manufacturing and fabrication facilities
- AI edge data centers and modular compute deployments
- Warehouse automation systems
- Healthcare clinics and educational facilities
Sizing and selection considerations
Selecting the correct 500 kVA transformer requires accurate load calculation and a clear understanding of future expansion plans.
If your projected demand approaches 500 kVA with limited headroom, consider a 750 kVA pad-mount transformer to avoid near-term replacement. For smaller load profiles, a 300 kVA pad-mount transformer may offer a more efficient alternative.
You can also browse transformers by kVA rating to evaluate adjacent sizes and ensure optimal system planning.
This capacity is commonly selected when:
- Calculated demand ranges from 375 to 450 kVA.
- Motor starting currents require an additional capacity margin to prevent voltage sag.
- AI or automation loads introduce sustained, high-density usage.
- Moderate expansion is anticipated over the next 3 to 5 years.
Common voltage configurations for 500 kVA transformers
Most 500 kVA transformers for commercial and AI infrastructure are engineered with medium-voltage primaries stepped down to standard utilization voltages.
Voltage selection must align with utility service requirements and downstream panel specifications. Custom tap settings, impedance values, and BIL ratings are available to meet project-specific engineering specifications or utility compliance targets. These units are designed for safe outdoor installation and long-term reliability in campus-style distribution systems.
Standard configurations include:
- Primary Voltages: Typically 12.47 kV, 13.2 kV, or 13.8 kV.
- Secondary Voltages: Standard 480Y/277V or 208Y/120V.
- Grounded wye or delta winding configurations.
- Oil-filled, dead-front pad-mounted construction for superior thermal performance.
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Product Details
Specifications
This 500 kVA transformer is a three-phase, oil-filled pad-mount unit designed for commercial, industrial, and AI infrastructure distribution. Each unit features a welded steel tank, tamper-resistant cabinet construction, and cooling capacity engineered for continuous full-load operation. Multiple medium-voltage primary options and standard low-voltage secondary configurations are available to align with modern electrical distribution requirements.
support
Our technical support team is available by phone and email to assist with load validation, voltage configuration, documentation, and coordination with utilities or engineers of record.
free shipping
Giga offers free shipping within the contiguous United States on in-stock transformers, with most orders processed within 1 to 2 business days. International shipping options are available upon request.
warranty
All Giga transformers are backed by a 3-year warranty, supporting long-term performance and reliability.
Manuals and documentation
Complete submittal drawings, user manuals, and specification sheets are available to support engineering review and installation planning.
Technical specifications
This oil-filled, tamper-resistant pad mount transformer is designed for reliable outdoor operation in commercial applications, with a robust welded steel tank, protective bushings, and an externally operated tap changer for voltage adjustment.
Typical characteristics for a 75 kVA pad-mount transformer include:
Final dimensions, weight, and impedance values vary based on voltage configuration and utility requirements.
Availability and lead time guidance
Availability for a 500 kVA transformer depends on primary voltage, secondary voltage, and utility specifications. Standard commercial configurations may offer accelerated lead times, while custom voltage combinations or impedance requirements typically require additional production time.
For accurate pricing and schedule confirmation, request a quote. Our team will promptly review your project details to confirm availability or build timelines.
FAQs
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What is a 500 kVA transformer used for?
A 500 kVA transformer is ideal for mid-sized commercial buildings, light industrial facilities, and AI infrastructure environments where reliable three-phase power is required for HVAC systems, manufacturing equipment, and server loads.
How do I know if a 500 kVA transformer is large enough?
If your calculated demand is between 375 and 450 kVA with moderate growth expected, a 500 kVA transformer typically provides the appropriate capacity. Load studies should always include motor inrush and future expansion plans.
What voltages are available for a 500 kVA transformer?
Common primary voltages include 12.47 kV, 13.2 kV, and 13.8 kV. Secondary voltages typically include 480Y/277V and 208Y/120V, depending on facility distribution requirements.
Is a 500 kVA transformer suitable for data centers?
Yes. A 500 kVA transformer is frequently deployed in edge data centers and modular AI environments to support server racks, cooling infrastructure, and UPS systems.
What is the difference between a 300 kVA and a 500 kVA transformer?
A 500 kVA transformer provides greater load capacity and expansion headroom compared to a 300 kVA unit. It is typically selected when sustained higher loads or growth projections justify additional capacity.
What is the lead time for a 500 kVA pad-mount transformer?
Lead times vary based on voltage configuration and customization. Standard designs may ship sooner, while custom builds require additional manufacturing time. Request a quote for the most accurate timeline.
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Related products
Our extensive selection of custom-built solutions and comprehensive inventory ensures that we can provide the ideal equipment to power your projects.
750 kVA 3-Phase Padmount Transformer: 34500 D to 208 Y/ 120
7500 kVA 3-Phase Padmount Transformer: 34500 D to 480 Y/ 277
300 kVA 3-Phase Padmount Transformer: 4160 D to 208 Y/ 120
300 kVA 3-Phase Padmount Transformer: 12000 D to 208 Y/ 120
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