Transformers for AI

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1 MVA Hermetically Sealed Substation Transformer - 13800V Delta Primary, 480Y/277 Grounded Wye Secondary - ONAN - Grey - NEMA 4X

$173490.26

1 MVA Hermetically Sealed Substation Transformer - 13800V Delta Primary, 480Y/277 Wye-N Secondary - ONAN - Copper - Grey

$123921.61

1 MVA Hermetically Sealed Substation Transformer - 13800V Delta Primary, 480Y/277 Wye-N Secondary - ONAN - Grey - NEMA 4X

$173490.26

1 MVA Hermetically Sealed Substation Transformer - 34500V Delta Primary, 480Y/277 Grounded Wye Secondary - ONAN - Grey - NEMA 4X

$173490.26

1 MVA Hermetically Sealed Substation Transformer - 4160V Delta Primary, 208Y/120 Wye-N Secondary - ONAN - Grey - NEMA 4X

$173490.26

1 MVA Hermetically Sealed Substation Transformer - 4160V Delta Primary, 480Y/277 Wye-N Secondary - ONAN - Grey - NEMA 4X

$173490.26

1 MVA Hermetically Sealed Substation Transformer - 4160V Delta Primary, 480Y/277 Wye-N Secondary - ONAN - Light Grey - NEMA 4X

$251560.89

1 MVA Hermetically Sealed Substation Transformer - 44000V Delta Primary, 600Y/347 Grounded Wye Secondary - ONAN - Green - NEMA 4X

$173490.26

1 MVA Hermetically Sealed Substation Transformer - 7200V Delta Primary, 480Y/277 Wye-N Secondary - ONAN - Grey - NEMA 4X

$91350.00

1.5 MVA Hermetically Sealed Substation Transformer - 4160V Delta Primary, 480Y/277 Wye-N Secondary - ONAN - Light Grey - NEMA 1

$168038.86

1.5 MVA Hermetically Sealed Substation Transformer - 4160V Delta Primary, 480Y/277 Wye-N Secondary - ONAN - Light Grey - NEMA 4X

$327675.77

1.5/1.75 MVA Conservator Substation Grounding Transformer - Wye-Delta Type - 69000Y/39838 Grounded Wye Primary, 7200V Delta Secondary, ONAN/ONAF, Sky Grey - NEMA 4

$400000.00

1.5/1.75 MVA Conservator Substation Grounding Transformer - Wye-Delta Type - 69000Y/39838 Grounded Wye Primary, 7200V Delta Secondary, ONAN/ONAF, Sky Grey - NEMA 4 - MR DETC

$763637.50

1.75 MVA Conservator Substation Grounding Zigzag Transformer - 69000Y/39838 Zigzag, ONAN, Sky Grey - NEMA 4

$263636.10

1.75/2 MVA Hermetically Sealed Substation Transformer - 4160V Delta Primary, 480Y/277 Wye-N Secondary - ONAN/ONAF - Light Grey - NEMA 4X

$436774.93

10 / 12 / 14 MVA Hermetically Sealed Substation Transformer -138000V Delta Primary, 4160Y/2400 Wye-N Secondary - Aluminum - KNAN/KNAF/KNAF - Grey

$1738181.78

10 / 12.5 MVA Hermetically Sealed Substation Transformer - 66000V Delta Primary, 33000V Delta Secondary - ONAN/ONAF, Light Grey

$518597.87

10 MVA Hermetically Sealed Substation Grounding Zigzag Transformer - 69000Y/39838 Zigzag, ONAN, Sky Grey - NEMA 4

$1558750.00

10 MVA Hermetically Sealed Substation Transformer - 13800V Delta Primary, 13530Y/7812 Grounded Wye Secondary - ONAN - Grey

$436424.63

10 MVA Hermetically Sealed Substation Transformer - 23000V Delta Primary, 13800Y/7968 Grounded Wye Secondary - ONAN - Grey

$406160.82

Requirements for AI data center high voltage transformers

High voltage transformers used in AI data centers must meet specific requirements to ensure reliability, efficiency, safety, and compliance with industry standards. Here are the key requirements:

1. Voltage Ratings

Primary Voltage: Typically ranges from 35 kV to 230 kV, depending on the power supply and distribution system.
Secondary Voltage: Commonly ranges from 11 kV to 35 kV to supply the medium voltage distribution within the AI data center.

2. Power Rating

kVA/MVA Rating: The transformer's power rating should be adequate to handle the total load of the AI data center, often in the range of several MVA (Megavolt-Amperes).

3. Efficiency and Losses

Energy Efficiency: Transformers should comply with efficiency standards such as DOE 2016 (U.S. Department of Energy) or EU EcoDesign regulations to minimize energy losses.
Load and No-Load Losses: Minimizing these losses is crucial for operational efficiency and cost savings over the transformer's lifespan.

4. Cooling Methods

Oil-Cooled: Often preferred for high voltage applications due to better cooling efficiency. Options include ONAN (Oil Natural Air Natural), ONAF (Oil Natural Air Forced), and OFAF (Oil Forced Air Forced).
Air-Cooled (Dry-Type): Used less frequently at high voltages but can be considered for specific indoor applications where oil cooling might pose a risk.

5. Insulation and Dielectric Strength

Insulation Class: Suitable for high voltage applications, typically designed to withstand the highest voltage and environmental conditions.
Impulse and Withstand Voltage: Must meet standards such as IEEE C57.12.00 and IEC 60076, ensuring the transformer can handle overvoltages and switching surges.

6. Temperature Rise and Cooling

Temperature Rise Limits: Standard limits are typically 55°C to 65°C for oil-cooled transformers.
Ambient Temperature: Rated for operation within the AI data center's ambient temperature conditions, often considering a typical range of -20°C to +40°C.

7. Safety and Standards Compliance

UL Listings: Compliance with UL standards such as UL 1562 for liquid-filled transformers.
IEEE and IEC Standards: Compliance with IEEE C57 series and IEC 60076 standards for design, testing, and performance.

8. Harmonics and Non-Linear Loads

K-Factor Rating: Transformers should be rated to handle harmonic distortion typically present in AI data centers due to non-linear loads.
Thermal Capacity: Must be sufficient to handle the additional heating effects of harmonic currents.

9. Physical and Environmental Considerations

Size and Weight: Should be manageable within the physical constraints of the AI data center facility.
Noise Levels: Noise generation should be within acceptable limits to avoid interference with AI data center operations.

10. Reliability and Redundancy

N+1 or 2N Redundancy: Ensuring continuous operation even during maintenance or failure conditions.
Monitoring and Diagnostics: Integration of systems for real-time monitoring and predictive maintenance.

11. Protection and Switching

Overcurrent Protection: Circuit breakers or fuses to protect against overloads.
Switching Capability: Load-break switches or vacuum interrupters for safe operation and maintenance.

12. Environmental Impact

Eco-Friendly Coolants: Use of biodegradable and less flammable coolants where possible to reduce environmental impact.
Leak Prevention: Design considerations to prevent oil leaks and mitigate environmental hazards.

References

IEEE C57.12.00-2010: IEEE Standard for General Requirements for Liquid-Immersed Distribution, Power, and Regulating Transformers.
IEEE C57.12.90-2015: IEEE Standard Test Code for Liquid-Immersed Distribution, Power, and Regulating Transformers.
IEC 60076-1:2011: Power Transformers – Part 1: General.
U.S. Department of Energy, 2016 Transformer Efficiency Standards.
UL Standard 1562: Transformers, Distribution, Dry-Type - General Requirements.
IEC 61378-1:2011: Converter Transformers – Part 1: Transformers for industrial applications.

These standards and requirements ensure that high voltage transformers in AI data centers are designed and implemented to provide safe, efficient, and reliable power distribution, meeting the rigorous demands of AI data center operations.