WP#48 - Evaluation of Eco Mode in Uninterruptible Power Supply Systems
The Green Grid · George Navarro, Brad Thrash et al.
This Green Grid white paper examines Eco Mode operation of three-phase, facility-scale UPS systems as a power-path efficiency measure and weighs the efficiency gain against protection trade-offs.
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Overview
The document is dated 24 September 2012; its editors are George Navarro (Eaton) and Brad Thrash (GE), and contributors include the Uptime Institute and several UPS vendors. It covers three-phase, data-centre-level UPS systems; small single-phase UPSs are out of scope.
The paper explains that an AC UPS can have several operating modes, of which Eco Mode is the highest efficiency. Eco Mode is listed among the power-system efficiency improvements in The Green Grid Data Center Maturity Model. Reviewing the operating modes is the basis for understanding the conditions under which the efficiency gain is obtained.
The efficiency gain is weighed against protection trade-offs. The summary gives no detail, but the framework evidently treats Eco Mode as a power-path efficiency measure to be balanced against protection. The Uptime Institute's contribution is a reminder that reliability is part of the discussion.
As a limit, numerical efficiency curves and transfer times are not included at summary level. Before a design decision, the related standard IEC 62040-3 and manufacturer data should be consulted.
Key points
- Dated 24 September 2012; editors George Navarro (Eaton) and Brad Thrash (GE).
- Eco Mode is one of the power-system efficiency improvements in the TGG Data Center Maturity Model.
- An AC UPS can have several operating modes, of which Eco Mode is the highest efficiency.
- Scope limited to data-centre-level three-phase UPS; single-phase UPS not addressed.
- Contributors include Uptime Institute and multiple UPS vendors.
- The efficiency gain is weighed against protection trade-offs.
- Related standard: IEC 62040-3.
Using it in design
- In the UPS module, model double-conversion and Eco/ESS modes with separate efficiency curves.
- When Eco Mode is selected, show the energy saving and add a note about transfer time and exposure to utility disturbances.
- Review the Eco Mode decision against reliability targets, IEC 62040-3 and manufacturer data.
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Who should read it
Electrical designers and operations managers who select UPS and evaluate power-path efficiency.
Related standards
- IEC 62040-3
Publication details
- Authors
- George Navarro; Brad Thrash; Lynn Simmons; John Collins; David Loucks; Dusty Becker; Bill Campbell; Harry Handlin; Andrew Lynch; Pam Lembke; Shaun Harris; Stephen McCluer; Jim Spitaels; Keith Klesner
- Publisher
- The Green Grid
- Year
- 2012
- Document number
- WP 48
- Document language
- English
- Source type
- Industry body
- Access
- Citation only
- Licence
- Copyright retained; citation only — the publisher’s terms apply to the original document
Original licence note
Download requires a free TGG account sign-in and is governed by The Green Grid Terms of Use; summary and facts from the public library landing page; full text not redistributed.
Citation
George Navarro; Brad Thrash; Lynn Simmons; John Collins; David Loucks; Dusty Becker; Bill Campbell; Harry Handlin; Andrew Lynch; Pam Lembke; Shaun Harris; Stephen McCluer; Jim Spitaels; Keith Klesner (2012). WP#48 - Evaluation of Eco Mode in Uninterruptible Power Supply Systems. The Green Grid. WP 48. https://www.thegreengrid.org/en/resources/library-and-tools/384-WP%2348---Evaluation-of-Eco-Mode-in-Uninterruptible-Power-Supply-Systems
Events on this subject
- Electricity Eurasia 2027
- ELECO 2026 Elektrik-Elektronik ve Biyomedikal Mühendisliği Konferansı
- 7x24 Exchange Spring Conference
All content and rights belong to the respective authors and publishers. SoSo CAD provides only the citation, its own summary and a link to the source, and is not responsible for the sources' content.
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