Eaton UPS battery runtimes
Eaton
Eaton publishes runtime graphs for named UPS product families and optional battery-pack configurations. The page is evidence that runtime belongs to a specific UPS and battery arrangement, not to a universal energy-to-runtime conversion.
On this page
Overview
The page offers separate graphs per product family and configuration: there are distinct curves for arrangements without and with extra battery packs. This structure shows that the same UPS model gives a different runtime curve with an extra pack, so runtime is determined by the installed battery capacity as well as by the model. A single 'minutes' figure on a UPS datasheet may therefore not represent the runtime of the configuration to be installed.
This points to a data source rather than a calculation method: runtime should be read as a curve belonging to the selected UPS and battery configuration, not as a single number found by dividing battery energy by load. This page is for the EMEA region, so these curves should not be applied directly to a model from another region's catalogue.
The source proposes no interpolation algorithm between curves and no additional derating rule. Interpolation and extra derating, such as for battery ageing or temperature, must therefore be recorded as explicit project assumptions, with the selected product's own curve as the basis. The page is evidence that curve-based data should be used in runtime modelling, not a validation of any one model.
Key points
- Eaton publishes separate runtime graphs for UPS product families and configurations.
- Graphs for configurations with and without extra battery packs are separate.
- Runtime belongs to a specific UPS and battery arrangement; there is no universal energy-to-runtime conversion.
- The graphs on the page are for the EMEA region.
- The page proposes no interpolation algorithm between curves.
Using it in design
- Use the curve of the selected UPS and battery configuration in runtime calculations.
- Record interpolation and any additional derating as explicit project assumptions; this page does not define an algorithm.
- Model the number of battery packs as part of UPS selection; an extra pack means a different curve for the same model.
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Who should read it
Electrical designers who model UPS runtime by battery configuration.
Publication details
- Authors
- Eaton
- Publisher
- Eaton
- Year
- Year not stated
- Document language
- English
- Source type
- Manufacturer
- Access
- Free to read
- Licence
- Copyright retained; citation only — the publisher’s terms apply to the original document
Citation
Eaton Eaton UPS battery runtimes. Eaton. https://www.eaton.com/sg/en-us/products/backup-power-ups-surge-it-power-distribution/backup-power-ups/ups-runtime-graphs-emea.html
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