# Council Decision of 13 November 2012 on the signing and conclusion of the Agreement between the Government of the United States of America and the European Union on the coordination of energy-efficiency labelling programmes for office equipment (Text with EEA relevance) (2013/107/EU), Division II: Workstations: Below is a sample PTEC calculation for a Workstation with two hard drives.


1.. Measure values using the Appendix A test procedure.
Off = 2 W
Sleep = 4 W
Idle = 80 W
Max Power = 180 W
2.. Note number of Hard Drives installed.
Two hard drives installed during test.
3.. Apply Weightings based on Table 4 to calculate PTEC:
Table 4:
Toff
35 %
Tsleep
10 %
Tidle
55 %
P TEC = 0.35 · P off + 0.10 · P sleep + 0.55 · P idle
= 0.35 · 2 + 0.10 · 4 + 0.55 · 80
= 45.10 W
4.. Calculate the PTEC requirement using the formula in Table 3.
P TEC = 0.28 · P max + # HDD · 5
P TEC = 0.28 · 180 + 2 · 5
PTEC = 53.2
5.. Compare the adjusted PTEC to the ENERGY STAR levels to determine if the model qualifies.
45.10 < 53.2
Workstation meets the ENERGY STAR requirements.

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Source: https://www.legislation.gov.uk/eudn/2013/107/schedule/ANNEX C/division/I./division/Appendix B/division/II. (the official version)
Page: https://openlegislation.uk/eu-decision-2013-107/schedule-ANNEX C/division-I./division-Appendix B/division-II.
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.