Transformers Solution For Data Center

KeRun Transformer Project Targets Blockchain and Data Centers

Over the past five years, KeRun Transformer has successfully completed numerous data center and blockchain projects in North and South America. Below are some project examples from KeRun Transformer.

Case 1 : A Tier III scale green computing center in North America

Project Background: This client, located on the East Coast of the United States, is building a high-density data center to serve large-scale AI models. The client has extremely high requirements for PUE (Power Usage Effectiveness) and mandates that the equipment must meet stringent fire safety and environmental standards to achieve LEED green building certification.

Pain Points and Design Philosophy :

Modern AI data centers face high-density nonlinear loads, and the harmonics generated by servers can cause ordinary transformers to overheat. Tier III data centers require N+1 fire ratings and extremely high fire protection standards.
KeRun’s Solution :
We specifically designed K-Factor anti-harmonic cables and used FR3 vegetable oil instead of mineral oil. This not only upgrades the fire rating to K-level (ignition point > 360°C), but also utilizes the excellent heat capacity properties of vegetable oil to increase the transformer’s overload capacity by 20%, perfectly mitigating sudden spikes in AI computing power .

Technical Highlights :

• • Technical Highlights (for the two images – Pad-Mounted Transformer Interior & Exterior)

    • Pad-mounted, compartmentalized design: Separate HV and LV compartments with clear terminal identification (H1/H2 and X1/X2/X3) to improve operational safety and simplify maintenance.

Technical Specification Details

Engineering and delivery details

1. To ensure “zero downtime due to missing parts” on-site, we provide complete handover components:
   • Protective devices:Standard configuration includes a Bay-O-Net plug-in fuse and a backup current-limiting fuse, providing dual overcurrent protection.
   • Intelligent monitoring : Multi-functional oil level/oil temperature/pressure integrated instrument with communication interface, directly connected to the data center environmental monitoring system.
   • Connections: The high-voltage side provides a 200A load switch and bearing well, while the low-voltage side provides a NEMA standard 12 -hole copper busbar plate.

2. In accordance with the data center’s highest stability requirements, each device undergoes testing compliant with the IEEE C57.12.90 standard before leaving the factory.

• Noise test: The measured noise level was controlled below 56dB (4dB lower than the NEMA standard) to ensure that it would not interfere with the data center maintenance personnel.
• Partial discharge test : Partial discharge level < 50pC , verifying the perfection and flawlessness of the insulation system.
• Zero leakage verification: A 24-hour positive pressure sealing test is performed to ensure that there is no risk of leakage from FR3 vegetable oil.

3. Logistics and Packaging

• an impact recorder during sea transport , allowing customers to read downtime data during transit upon receipt of the goods, ensuring that the equipment has not suffered internal damage.
• All outer packaging has a QR code ; scanning it will provide an electronic test report and installation manual.

Case Study 2:
Texas Blockchain and Cryptocurrency Mining Farm Expansion Project

During the Phase II expansion of an overseas data center campus, the owner required a power solution that could be deployed quickly while meeting strict reliability and compliance expectations. The electrical concept was medium-voltage utility service feeding multiple pad-mounted transformers, stepping down locally to 480Y/277V for low-voltage distribution, UPS input, and critical loads—minimizing feeder lengths, reducing losses, and improving maintainability.

Kerun’s engineering team worked closely with the EPC contractor and the data center O&M group to confirm system voltage class, fault-duty and impedance targets, efficiency requirements, sound limits, and dead-front elbow interfaces to match the site’s cable system. Kerun then delivered data-center-grade pad-mounted distribution transformers, supported by a complete documentation package (drawings, FAT reports, manuals, and spare parts). With consistent manufacturing control and a stable lead time, the site achieved on-schedule energization and transitioned smoothly into long-term operation.

Kerun Solutions :

• Deployment scale : 150 sets of pad-mounted transformers

Technical Highlights — Kerun Pad-Mounted Transformer (Data Center Grade)

• Dead-front, touch-safe MV interface: Elbow-type separable connectors (200A/600A class) reduce exposure risk and support fast, standardized field terminations.

• Compartmentalized HV/LV design: Separate MV and LV access improves operational safety, simplifies maintenance, and supports quick replacement in data center yards.

• High-reliability oil-immersed core & windings: Stable insulation and thermal performance for continuous 24/7 loading, optimized for critical power environments.

• High-efficiency, low-loss design: Premium core material and optimized winding design help reduce energy losses and operating cost (DOE-efficiency compliant design available).

• Strong thermal management: External radiator and optimized oil circulation enhance heat dissipation and improve overload tolerance in high ambient temperatures.

• Enhanced monitoring & serviceability: Built-in gauges/indicators (oil temperature/pressure/level options) and clear terminal labeling enable rapid inspection and preventive maintenance.
• Utility-grade protection options: Bay-o-net/current-limiting fuses, loadbreak switching options, and coordinated protection for MV feeder fault-duty (configurable).

• Rugged outdoor enclosure: Corrosion-resistant steel cabinet, weatherproof construction, and tamper-resistant hardware for long-term outdoor operation.

• Flexible configuration for data centers: Multiple voltage classes (12.47/13.2/13.8/15kV), 480Y/277V output, selectable impedance, and DETC tap range to match short-circuit studies.

• Standards-ready design: Built to align with IEEE/ANSI C57 (incl. C57.12.34) and NEMA, with UL (applicable configurations) support for project compliance.

Product positioning : durable, good air intake, economical, and high temperature resistant .
Benchmarking logic : Although it is a mining area, in the high temperature of Texas, we need to emphasize the environmental temperature of the clothing and the special air intake design.

Technical Specification Details

Kerun Service & Support for Pad-Mounted Transformers

At Kerun, we do more than supply equipment—we support your project from concept to commissioning. Our team helps customers select the right pad-mounted transformer configuration based on load profile, short-circuit study, voltage class, efficiency targets, and site conditions, ensuring the design fits both utility requirements and data-center operating practices.

We provide a complete delivery package including technical drawings, nameplates, factory test reports (FAT), manuals, and spare parts recommendations, and we can align interfaces such as dead-front elbow terminations, LV connection pads, protection schemes, and monitoring options to match your site standards. With standardized manufacturing control and strict quality management, Kerun delivers consistent performance, reliable lead times, and responsive after-sales support—helping you reduce installation risk and maintain long-term operational stability.

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