# Commission Decision of 26 April 2011 concerning a technical specification for interoperability relating to the rolling stock subsystem — ‘Locomotives and passenger rolling stock’ of the trans-European conventional rail system (notified under document C(2011) 2737) (Text with EEA relevance) (2011/291/EU) (repealed), Appendix ANNEX D

Extent: E+W+S+N.I.
Status: repealed

ENERGY METER
1.
Introduction
1.1.
The onboard energy measuring system (EMS) is the system for measurement of electric energy taken from or returned (during regenerative braking) to the overhead contact line (OCL) by the traction unit, supplied from the external electric traction system.
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2.
Requirements for onboard energy measuring system (EMS)
2.1.
Energy measuring function (EMF)
2.1.1.
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2.1.2.
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2.1.3.
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2.1.4.
The EMF shall have a total accuracy of 1,5 % for AC for active energy and 2,0 % for DC (or lower percentage of error).
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2.1.5.
The elements used to implement the EMF are subject to legal metrological control, which shall be executed in accordance with the following:
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2.1.6.
The EMF shall have a time reference period of 5 minutes defined by the UTC clock time at the end of each reference period; one of the time reference period shall end at 24:00:00.
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2.1.7.
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2.2.
Data handling system (DHS)
2.2.1.
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2.2.2.
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2.2.3.
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2.2.4.
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2.2.5.
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2.2.6.
The compiled data suitable for energy billing shall be stored ready to be transferred in chronological order according to the end times of each 5 minutes time reference period in accordance with clause 2.1.6 of the present Annex D and shall contain:
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2.3.
Location function
2.3.1.
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2.3.2.
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2.3.3.
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2.3.4.
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2.4.
Other requirements
2.4.1.
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2.4.2.
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2.5.
Conformity assessment of complete onboard energy measuring system
2.5.1.
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2.5.2.
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Source: https://www.legislation.gov.uk/eudn/2011/291/annex/annex/D (the official version)
Page: https://openlegislation.uk/eu-decision-2011-291/annex/annex-D
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.