9900D Three Phase UPS

Efficient, Power-Dense UPS Ideal for Data Centers

The 9900D is high-density, modular power, redefined. This large-capacity UPS possesses a small footprint, perfect for your hyperscale or colocation data center.

480V / 1200, 1250, 1500, 1600, & 2000 kVA

The 9900D UPS from Mitsubishi Electric delivers the highest reliability to satisfy the relentless demands of cloud and colocation data centers.

 

This system is responsive, shielding from power transients with advanced control and an option for power module redundancy. 

 

While the 9900D UPS has a high power rating, it has a significantly small footprint within its output power range – allowing you to do more with a single unit than competitors.

 

This combined reduces gray space, cabling and installation time, and freight costs.

Mitsubishi Electric's 9900D 1200-2000kVA UPS with open doors.

An ideal UPS for data centers, the 9900D UPS delivers:

  • High-speed sampling & switching
  • Higher operating temperatures at higher altitudes
  • Expandable  UPS via modular design (optional)
  • Advanced IGBTs for increased reliability
  • Full-color HMI for easier user interface
  • Lithium-ion, VRLA, and Pure Lead compatible for greater flexibility

 

9900D Product Video

With mass migration to cloud and colocation services, hyperscale data centers require critical back-up power solutions that are reliable, flexible, and compact. Mitsubishi Electric’s 9900D UPS easily meets this criteria, and more.

Self-Load Test Capability

The 9900D features a self-load test mode of operation, providing the ability to run burn-in tests on the UPS without needing an external load bank connected.

 

To accommodate different testing requirements, there are selectable test parameters, such as:

  • 20-100% Load Rating
  • 1-600 Minute Test Time
  • 0 to Unity Power Factor

Running a burn-in utilizing the self-load test realizes savings from removing the need to rent a load bank and cables, the set up and removal labor, and reducing utility power usage.

Diagram of a self load test.

Unparalleled Reliability. Maximum Uptime.

Mitsubishi Electric delivers the highest reliability among backup power equipment suppliers. Our robust technology is designed to deliver continuous power in the most demanding environments – and it’s not just estimated.

 

Our 9900 Series of UPS have a sustained load carrying capacity of 99.9995% of their actual operational history.

99.9995% Equipment Reliability graphic.

Hyperscale Power. Small footprint.

Originally designed as a true hyperscale UPS by prioritizing power density, the 9900D was the first 2MW system to the market.

 

Each of the five different kVA ratings today (1200, 1250, 1500, 1600, & 2000kVA) possess a small footprint to generate more white space. In fact, Mitsubishi Electric’s 9900D is the best-selling UPS at 1500kVA and above.*

 

Isometric view of 4 Mitsubishi Electric's 9900D UPS in different kVA.

*OMDIA 2025 UPS Market Research Report

Optimum Control. Superior Performance.

At the heart of the 9900D is advanced power electronics designed by Mitsubishi Electric, giving us intimate knowledge on how best to control them. High speed sampling and switching deliver hyperscale performance and value –

  • Achieving the highest levels of efficiency
  • Increasing cost savings & longer product life from cooler operation
  • Possessing the flexibility to operate in higher temperatures

The IGBT power device for the 9900D UPS achieves superior function under all load conditions.

Output current and voltage of Mitsubishi Electric vs a Competitor.

Optional Expandable UPS. Increased Flexibility. 

The 9900D’s modular design enables supplemental modules to be added over time as warranted by increasing capacity needs, making hyperscale expansion faster, easier and more economical.

 

This is crucial in a UPS for data centers as you can optimize your investment by only paying for the power you need, while retaining the option to grow your UPS capabilities as your business grows.

9900D scalability of .8MVA or .4MVA+bypass modules and 1.2MVA

Other Features

 

  • Capacity can be increased overtime using original bypass module
  • 1.1:1 generator compatibility
  • 100 kAIC option
  • Lithium ReadyTM
LITHIUM READY.

Certifications

  • UL 1778 (Underwriter Laboratories) Standard for UPS Equipment
  • CSA 22.2 (Canadian Standards Association – cUL Equipment)
  • IEC (International Electro-technical Commission), Semiconductor Converter Standards
  • EMI compatibility: IEC 62040-2 (category C3)
  • IEEE 587, ANSI C62.41 1991 Standard for Surge Withstand Ability
  • ISO 9001 Quality Assurance program

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Why Choose A Mitsubishi Electric UPS?

9900D UPS for data centers achieves up to 97% efficiency


A UPS for any size data center needs to be an efficient UPS. Poor performing UPS systems are often a major driver in energy loss in power distribution, reducing uptime and costing money. So, hyperscale and colocation data center owners need to find a reliable, efficient UPS that will maintain consistent power in the event of an outage. 

 

Its high power density and small footprint make the 9900D the perfect UPS for data centers – and Mitsubishi Electric is a proven leader in advancing efficiencies to unprecedented levels.

 

Mitsubishi Electric’s superior expertise in optimizing power device control is evident by the flatness of the resulting curve, demonstrating high efficiency across all load levels. 

 

In the event the 9900D fails to comply with this guarantee in a verified performance test, Mitsubishi Electric will refund the purchaser an amount up to a maximum $10,000 per year for three years.

 

Please note that all efficiency curves published on this site are for the respective UPS operating in true online double conversion (aka VFI).

 

Line graph showing the efficiency percentages of different kVA's.

Compatible battery power for a 1200-2000kVA UPS


Mitsubishi Electric offers various DC power solutions with both lithium-ion and VRLA battery cabinets, which you can learn more about below. With respect to lifespan and operation efficiency, lithium-ion batteries now outlast traditional VRLAs. They’re also getting smaller, with the BCL04-CB cabinets being the perfect size to support applications that require a small footprint.

 

For a deeper dive into all possible solutions, review our UPS Batteries & DC Solutions.

 

Battery icons labeled: lithium ready, VRLA, wet cell and pure lead.

9900D UPS Specifications

The efficient, large-capacity, 9900D UPS improves uptime by delivering a balanced power load. Mitsubishi Electric can customize a complete and seamless backup solution to suit your needs.

 

Review the various UPS peripherals including maintenance bypasses, DC energy solutions, & communication options below.

Mitsubishi Electric's 9900D uninterruptible power supply.

Don’t Let Your Business Go Dark®