Modular UPS offers efficiency of up to 96%

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The latest in modular uninterruptible power supply (UPS) systems was recently highlighted at the Data Centre World conference and exhibition, held in London. With its standardised modular approach, low power consumption and high reliability, the PowerWAVE 9500DPA, from Uninterruptible Power Supplies Ltd, provides a solution for all types of data centres from 100 kW up to 3 MW.

The decentralised parallel architecture (DPA), upon which the PowerWAVE 9500DPA is based, refers to each 100 kW UPS module containing the hardware and software required for full system operation. The modules share no common components, with each module containing its own independent static bypass, rectifier, inverter, logic control, control panel, battery charger and batteries. With all the critical components duplicated and distributed between individual units, potential single points of failure are eliminated. In the unlikely event that one UPS module does encounter a problem, the overall system will continue to operate normally, but with one less module of capacity. The failed module will be fully disconnected and will not impact the remaining operating modules.

This modular approach means the UPS can be sized to fit the data centre needs, allowing modules to be added as requirements grow. Adding capacity is easy: five 100 kW modules can be mounted in one frame and six frames can be configured in parallel to provide a top rating of 3 MW. The PowerWAVE 9500DPA is the only modular UPS on the market that can easily add increments in this way. The resulting savings in power usage over the service life of the UPS are substantial, and can reach ten of thousands of pounds. A further advantage is that the modular approach makes it easy to add redundancy and to further augment availability and reliability.

The PowerWAVE 9500DPA has a very low cost of ownership, partly because of the aforementioned modularity and scalability, but also because of its best-in-class energy efficiency. The UPS operates with an efficiency of up to 96% or greater than 99% in Eco Mode. Its efficiency curve is very flat so there are significant savings in every working regime. Because it consumes less power, the PowerWAVE 9500DPA also requires less cooling effort, generating further savings.

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