Extended power rating for Eaton 9395

Eaton launched an industry-leading power rating of 1100 kVA for the Eaton 9395 UPS in July.

The 9395 1100 kVA UPS, part of the Powerware series, extends the power rating from the 825 kVA system launched in January this year. The 1100 kVA power range is targeted at the largest data centres and other applications with heavy power needs.

“The 1100 kVA is the first transformer-free UPS of this scale in the double conversion UPS market: it is the largest system currently available. Thanks to the 9395’s Hot Sync paralleling design, we are now able to meet power needs as high as 4.4 MVA with a four-unit setup, with each UPS providing 1100 kVA,” says Jari Nieminen, Product Manager at Eaton Power Quality.

The modular design also allows the unit to be used in either capacity or redundant mode.

“What is unique in the multi-module UPS unit is that it is automatically redundant. For example, if the load is 825 kVA, the 1100 kVA system has automatic N+1 redundancy. If the load rises, the additional 275 kVA module provides increased capacity,” Nieminen adds.

The 9395 uses a transformer-free technology that allows very high operating efficiencies – as high as 94.5 percent – and a very small footprint and weight compared to its competitors. This translates into reduced utility costs and space savings that become more and more remarkable when moving into higher power needs. 

Greatest efficiency with no risks

In addition to Hot Sync paralleling and ABM battery management technologies, the 9395 employs other new and innovative Eaton technologies, including the Energy Saver System and the Variable Module Management System (previously known as the Adaptive Capacity System).

“The Variable Module Management System, or VMMS, offers the customer outstanding benefits. It significantly increases the system’s overall double conversion efficiency at lighter loads, as it allows the UPS to match the current load by deciding which of the power modules are on standby and which of them feed the load,” Nieminen points out.

“The system efficiency is one of the most important UPS features affecting the system’s overall energy consumption. With VMMS, we are able to optimise the efficiency of even the largest systems,” Nieminen says.

To guarantee the most reliable system operation, the 1100 kVA system can be configured to have a separate battery for each 275 kVA power module. This setup eliminates the possibility of a single point of failure due to any battery malfunction. 

The 9395 1100 kVA is the first transformer-free UPS of this size in the double conversion UPS market. It is able to meet power needs as high as 4.4 MVA with a four-unit setup.