The market leader in 500-800 kVA UPS, ideal for colocation and large enterprise applications.
The 9900B Series Uninterruptible Power Supplies from Mitsubishi Electric is a three phase, online double-conversion system, featuring our world-renown IGBT technology for enhanced UPS performance and reliability. The 9900B Series UPS enjoys the largest install base with just under 2,000 in North America alone.
Available in 300, 500, and 750 kVA, the 9900B Series UPS is VRLA, Lithium Ion, and flywheel compatible for a more efficient UPS.
Mitsubishi Electric delivers the highest reliability among backup power equipment suppliers. Our robust proprietary technology is designed to deliver continuous power in the most demanding environments - and it’s not just estimated. Our installed base of 9900 series Uninterruptible Power Supplies have a sustained load carrying capability of more than 99.9994% of their actual operational history.
How an IGBT power device is controlled is key to achieving optimum UPS performance. Utilizing a combination of high sampling rates and Direct Digital Control (DDC), the 9900B Series UPS is able to provide superior performance under all load conditions.
Benefits to the customer include excellent output voltage control, dynamic inverter response, and minimal voltage distortion during full load steps without the DC source. These characteristics maximize the performance of the UPS and increase the overall reliability of components and the system.
The 9900B Series UPS is designed with reliability and maintenance in mind, ensuring consistent quality operation for the lifetime of the system. Note the various system components that either minimize or ease system maintenance.
Mitsubishi Electric guarantees that the AC to AC efficiency of the 9900 Series UPS supplied to purchaser will not be <1% below the specified efficiency published in the Mitsubishi Electric factory specification. The performance test will take place during either a factory or site acceptable test, with a module operating on inverter and with the battery disconnected.
In the event the UPS module series fails to comply with this guarantee, as verified by the factory or site acceptance 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).
While the UPS is the most critical piece of infrastructure in a data center, the DC power backup storage system that supports the UPS is not far behind. UPS battery technology is advancing, with new lithium ion batteries outlasting traditional VRLAs with respect to lifespan and operation efficiency. They’re also getting smaller, with the new BCL04 cabinets the perfect size to support edge data center applications.
Mitsubishi Electric offers various DC power solutions with information on both lithium ion and VRLA battery cabinets in the Peripherals section below. For a deeper dive into all possible solutions, review our UPS Batteries and DC Power Storage Solutions.
With a kVA range of 300 to 750, the 9900B Series UPS is readily equipped to maintain critical power in large enterprise applications. Mitsubishi Electric can customize a complete and seamless backup solution to suit your needs.
Review the various peripherals including maintenance bypasses, DC energy solutions, & communication options below.
Landing Cabinets & DC Disconnects
BIM 3D Models