
Delta 10kV DC Power: Efficient and Reliable AI Voice Data Center Solution
Introduction: Power Challenges in the Era of Digital Transformation
Driven by the digital transformation wave, the AI voice service industry is experiencing unprecedented growth. As a company deeply invested in intelligent voice technology, software, and chip development, our data center’s electricity demand has been increasing annually, reaching megawatt levels.
For our team, ensuring stable and efficient power supply has become a decisive factor for business continuity.
Traditional AC power systems revealed multiple operational challenges:
- Energy losses from multiple voltage conversion stages
- PUE Optimization difficulties increasing operational costs
- Large equipment footprint limiting Server Room Power Architecture flexibility
As AI workloads continue to expand, we urgently need a more efficient, reliable, and energy-saving solution—Medium Voltage DC Power.

Pain Points of Traditional AC Power
Historically, our core data center relied on AC power systems, but with rapid workload growth, several issues became evident:
- Low Energy Efficiency: Conventional UPS systems require AC-DC-AC multi-stage conversion, achieving only about 96% efficiency, limiting High-Efficiency Power output.
- Complex Maintenance: UPS systems have numerous components, critical parts are prone to wear, and maintenance cycles are lengthy.
- Low Space Utilization: Traditional “UPS + transformer” solutions occupy significant cabinet space, constraining Server Room Power Architecture optimization.
Our comparative analysis indicated that adopting a DC Power Supply System could significantly reduce conversion stages, improve energy utilization, and simplify operational workflows.
Implementation of Delta 10kV Medium Voltage DC Power
To address these challenges, we partnered with Delta to deploy two 10kV Medium Voltage DC Power systems in the new phase of our data center, along with 1,920 battery cells and 37 power distribution units, establishing a stable and reliable power architecture.
System Feature Comparison Table:
| Metric | Traditional AC Power | Delta 10kV Medium Voltage DC Power | Advantage |
|---|---|---|---|
| Power Architecture | AC-DC-AC multi-stage | 10kV AC to DC architecture | Reduced conversion stages, higher efficiency |
| System Efficiency | 96% | Peak 98% | Reduces electricity costs, improves Energy Efficiency Improvement |
| Footprint | Large | Reduced by ~50% | Optimizes Server Room Power Architecture utilization |
| Maintenance | Complex | Simplified, key components 5-year maintenance-free | Enhances Power Reliability |
Key Advantages:
- High Efficiency: Peak system efficiency reaches 98%, effectively lowering PUE Optimization and saving annual electricity costs.
- Optimized Space Usage: Modular design increases cabinet density, supporting future expansion.
- Simplified Maintenance: Fewer DC system components reduce failure rates and maintenance time.
During deployment, the Medium Voltage DC Power system demonstrated excellent stability under high-density AI voice computing workloads.
Core Advantages of the DC Power Supply System
Deploying a DC Power Supply System brought measurable benefits:
- Simplified System Architecture
- Direct 10kV AC to DC conversion reduces unnecessary AC/DC/AC conversions
- Functions as a UPS Alternative Solution, lowering redundant components
- Improved Power Reliability
- Redundant critical components reduce single-point failure risks
- Significantly improves Power Reliability
- Energy Efficiency Improvement
- AC-240V DC architecture reduces energy loss
- Peak system efficiency enhances High-Efficiency Power, saving over 5% annually
- Optimized Footprint
- Cabinet area reduced by ~50%
- Supports future scaling and densification of Server Room Power Architecture
- Rapid Deployment
- Mature delivery experience shortens project timelines
- Acts as a Rapid Deployment Solution for fast-growing AI workloads
Our deployment experience confirms that Medium Voltage DC Power greatly enhances overall reliability and efficiency in high-power AI environments.
Performance Comparison and Validation Cases
In real-world operations, we compared traditional AC UPS systems with Delta 10kV Medium Voltage DC Power:
| Performance Metric | Traditional UPS | Delta 10kV DC System | Improvement |
|---|---|---|---|
| System Efficiency | 96% | 98% | +2% |
| PUE | 1.7 | 1.5 | ~12% reduction |
| Footprint | 100% | 50% | ~50% saved |
| Maintenance Hours | 12h/month | 4h/month | ~66% reduction |
| Single-Point Failure Rate | Medium | Low | Enhanced Power Reliability |
Case Summary:
- Six months of operation without major power interruptions
- Annual electricity savings reached several hundred thousand dollars
- Optimized cabinet utilization supports deployment of additional AI voice servers
Data demonstrates that Medium Voltage DC Power provides superior performance in high-density AI workloads.
Energy Optimization and Sustainability
With global carbon reduction goals, energy-saving and low-carbon operation in data centers are critical. High-Efficiency Power and Energy Efficiency Improvement not only reduce costs but also support sustainable operations:
- Reduced energy loss: DC architecture minimizes multiple AC/DC conversions
- Optimized PUE: System efficiency up to 98% reduces overall PUE
- Optimized space utilization: Modular design supports future expansions
- Lower maintenance costs: Key components maintenance-free for 5 years
Our practical experience confirms that Medium Voltage DC Power is an ideal solution for achieving high efficiency and low-carbon operations in AI data centers.
Conclusion and Key Takeaways
By deploying Delta 10kV Medium Voltage DC Power, our AI voice enterprise data center achieved a comprehensive transformation:
- Operational cost optimization: Lower PUE and significant electricity savings
- Enhanced power reliability: DC architecture reduces single-point failures
- Improved space utilization: Compact design supports future expansion
- Rapid deployment capability: Mature delivery experience meets fast-growing AI workloads
Highlights:
- High efficiency: Peak efficiency 98%, significant PUE Optimization
- High reliability: Redundant design, simplified maintenance
- Space saving: Cabinet footprint reduced by ~50%
- Rapid deployment: Mature experience shortens commissioning timelines
Keywords naturally incorporated: Medium Voltage DC Power, DC Power Supply System, Data Center Power, High-Efficiency Power, PUE Optimization, UPS Alternative Solution, Power Reliability, Server Room Power Architecture, Energy Efficiency Improvement, Rapid Deployment Solution
Delta 10kV Medium Voltage DC Power is a key enabler for robust operations and energy efficiency in future high-density AI voice data centers.
Frequently Asked Questions (FAQ)
Q1: What is Medium Voltage DC Power, and why is it suitable for AI data centers?
A1: Medium Voltage DC Power refers to a direct current power supply system that operates at higher voltages, such as 10kV, for data centers. Compared to traditional AC systems, it reduces multiple conversion steps, improves High-Efficiency Power, optimizes PUE, and enhances Power Reliability. It is especially suitable for AI data centers with high-density server deployments.
Q2: How does a DC Power Supply System improve energy efficiency?
A2: By eliminating AC-DC-AC conversion cycles and directly supplying DC power to servers, energy loss is minimized. This results in a higher system efficiency (up to 98%) and lower PUE, achieving Energy Efficiency Improvement while reducing operational costs.
Q3: Can Medium Voltage DC Power systems be deployed quickly in existing data centers?
A3: Yes. Thanks to modular design and Rapid Deployment Solution capabilities, Delta 10kV Medium Voltage DC Power systems can be integrated with minimal downtime, supporting fast-growing AI workloads.
Q4: How reliable is a DC Power system compared to traditional UPS?
A4: The system features redundant components and fewer conversion stages, which significantly reduces single-point failures. This ensures Power Reliability and continuous operation for critical AI voice services.
Q5: Does using Medium Voltage DC Power save physical space in the server room?
A5: Absolutely. Delta’s 10kV DC systems are highly integrated, reducing cabinet footprint by approximately 50% compared to traditional “UPS + transformer” setups. This optimizes Server Room Power Architecture and allows more efficient deployment of AI servers.
Q6: Is Delta 10kV Medium Voltage DC Power suitable for sustainability goals?
A6: Yes. By reducing energy losses and improving High-Efficiency Power, DC power systems contribute to lower energy consumption, supporting data center carbon reduction and sustainable operation initiatives.





