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The Power of Green: Mitsubishi 9900A Series High Efficiency True On-Line Double Conversion Uninterruptible Power Supply (UPS)


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From Mitsubishi Electric Power Products, Inc.

Uninterruptible Power Supply (UPS) Systems are one of the core components of mission critical infrastructure supporting all business sectors today. Of the different UPS topologies available, true on-line double conversion UPS Systems have emerged as the preferred topology because they offer reduced risk of critical load loss and therefore business loss due to power quality issues. On-line double conversion UPS Systems therefore offer the highest reliability and quality of continuous conditioned power to the critical load. With this reduced risk of critical load loss however, there was always a trade off in that overall system efficiency was lower compared to that of off-line or stand-by type UPS systems. This was due to increased switching loss of the semiconductor power devices in the conventional on-line double conversion circuit.


Products & Services
Uninterruptible power supplies (UPS) are backup batteries that provide emergency power to electrical systems in case power becomes unavailable. They are connected between a power source (such as an electrical outlet) and the equipment to protect (such as a motor or computer). Search by Specification | Learn more about Uninterruptible Power Supplies (UPS) | Uninterruptible Power Supplies (UPS) Insights
Single phase uninterruptible power supplies (UPS) sit between an AC outlet and an electronic device to provide power conditioning, back-up protection, and distribution for electronic equipment loads. They also prevent power disturbances from affecting the performance and life of the electronic device and vital data.  Search by Specification | Learn more about Single Phase Uninterruptible Power Supplies (UPS)
Three phase uninterruptible power supplies (UPS) operate in conjunction with existing electrical systems to provide power conditioning, back-up protection, and distribution for electronic equipment loads that use three-phase power.  Search by Specification | Learn more about Three Phase Uninterruptible Power Supplies (UPS) | Three Phase Uninterruptible Power Supplies (UPS) Insights

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Topics of Interest
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Line-interactive uninterruptible power supplies (UPS) work in parallel with conditioned input AC power to supply power to the load (boosting or bucking), and only handle the full load power when the...
The sensitivity of electronic systems to power disturbances and the likelihood of interruptions in utility power make it easy to justify the purchase of an uninterruptible power supply (UPS) to...
At times, power from a wall socket is neither clean nor uninterruptible. Many abnormalities such as blackouts, brownouts, spikes, surges, and noise can occur. Under the best conditions, power...