Keeping a UPS cool – EATON/Powerware 9390

Tags:
Data center cooling
Powerware
UPS
We are installing a EATON/Powerware 9390 - 120kVA UPS in our building attic. It gets warm up there (110 degrees F) in the summer. We are looking at possible solutions to keep the UPS cool. Any suggestions?
ASKED: February 25, 2010  7:42 PM
UPDATED: May 1, 2010  8:08 PM

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Outside of convincing you that the building attic is a poor choice, the only solution I have is a cooling rack.

The Powerware 9390 – 120kVA should remain between 68 and 77 degrees with a limit of 104 before issues arise (according to the manual). The racking you choose should take into consideration the rate at which heat will be created by the battery.

I hesitate to offer a racking solution because I do not specialize in them. I do know that they are typically designed to fit the environment they are in. You may be able to co-locate this with a ventilation system to reduce the amount of cooling required.

Good luck.

Discuss This Question: 3  Replies

 
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  • Dave mc
    The hotter it gets the more stressed it gets and the shorter the life of the unit. The batteries are also a large issue as they require a constant temperature of around 20 to 24deg C if you expect to obtain the maximum life, as the biggest enemy of a battery is heat and the second enemy is to cold. The other major problem is a mixture of dust and moisture which cause the system to over heat, the high power section to short and the electronic firing unites that creates the wave form to over heat. In other works don’t stick it in a hot area dusty area that get effected by temperature change and moisture. This is the second most causes of UPS failure next to insufficient maintenance.
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  • Boschtools
    Maybe just can just put a fan on it which will cool it off.
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  • Giovannistl
    77 degrees refers to optimum battery environment. The UPS can operate in 104 degrees. The batteries will die at that temp.
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