{
  "url": "https://openlegislation.uk/eu-decision-2020-1167/annex/division-2/division-2.1",
  "json_url": "https://openlegislation.uk/eu-decision-2020-1167/annex/division-2/division-2.1.json",
  "legislation": "eudn/2020/1167",
  "legislation_title": "Commission Implementing Decision (EU) 2020/1167 of 6 August 2020 on the approval of the technology used in a 48 Volt efficient motor-generator combined with a 48 Volt/12 Volt DC/DC converter for use in conventional combustion engine and certain hybrid electric passenger cars and light commercial vehicles as an innovative technology pursuant to Regulation (EU) 2019/631 of the European Parliament and of the Council) (Text with EEA relevance)",
  "legislation_url": "https://openlegislation.uk/eu-decision-2020-1167",
  "path": "annex/division/2/division/2.1",
  "kind": "division",
  "number": "2.1",
  "heading": "48V motor-generator efficiency",
  "text": "The efficiency of the 48V motor-generator shall be determined in accordance with ISO 8854:2012, with the following precisions.\nThe manufacturer shall provide evidence to the type-approval authority that the frequency ranges of the 48V motor-generator are the same as or equivalent to those set out in Table 1.\nThe efficiency of the 48V motor-generator shall be determined on the basis of measurements at each of the operating points listed in Table 1.\nThe current intensity of the 48V motor-generator at each operating point shall be half the rated current. For each operating point, the voltage and the output current of the 48V motor-generator shall be kept constant during the measurement, with the voltage at 52V.\nTable 1\nOperating pointi\nHolding time[s]\nRotational frequency\nFrequency of operating points\n1\n1 200\n1 800\n0,25\n2\n1 200\n3 000\n0,40\n3\n600\n6 000\n0,25\n4\n300\n10 000\n0,10\nThe efficiency of the 48V motor-generator at each operating point i ( ) [%] shall be calculated in accordance with Formula 1.\nFormula 1\nwhere, for each operating point i,\nUi is the voltage [V];\nIi is the current intensity [A];\nΜi is the torque [Nm];\nni is the rotational frequency [min-1].\nFor each operating point, the measurements are to be performed at least five times consecutively and the efficiency shall be calculated for each of those measurements with j being the index referring to one set of measurements.\nFor each operating point, the average of those efficiencies shall be calculated.\nThe efficiency of the 48V motor-generator [%] shall be calculated in accordance with Formula 2.\nFormula 2\nwhere\nis the mean efficiency of the 48V motor-generator determined for operating point i [%]\nhi is the frequency of operating point i, as set out in Table 1.",
  "extent": "E+W+S+N.I.",
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eudn/2020/1167/annex/division/2/division/2.1",
    "retrieved_at": "2026-11-01T15:12:11.705447+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}