Measuring Instruments Directive (MID)in<strong>for</strong>mationGetting to terms with the MIDThe Measuring Instruments Directive (MID) is a relatively newterm. MID was introduced by the European Commission in2004 to promote the free trade of measuring instruments<strong>and</strong> provide common rules <strong>for</strong> their use. As European Directive2004/22/EC, MID came fully into <strong>for</strong>ce on October 30th,2006.Instruments must meet the essential requirements of thedirective plus one of ten instrument-specific annexes. Forelectricity <strong>meters</strong>, this is MI-003 (active electrical energy<strong>meters</strong>). Approval to MID is required <strong>for</strong> <strong>meters</strong> used in billingapplications <strong>and</strong> preferable in many related areas, e.g. jointresidential sourcing.Creates a single EU instrument marketThe aim of the directive is to create a single market in measuringinstruments <strong>for</strong> the benefit of manufacturers <strong>and</strong>, ultimately,consumers across Europe. National rules that deviate fromMID are not allowed. With an MID ’European Type ApprovalCertificate’, an instrument can be sold <strong>and</strong> used in any EU (orEEA) member state.Routes to certificationMID stipulates requirements in three areas; climate conditions(e.g. how different temperature zones affect requirements),mechanical environments <strong>and</strong> electromagnetic environments.WELMEC, a committee whose principal aim is to establisha harmonized <strong>and</strong> consistent approach to European legalmetrology (metering), draws up design guidelines <strong>for</strong> electricity<strong>meters</strong>. These are then st<strong>and</strong>ardized by CENELEC, theEuropean Committee <strong>for</strong> Electrotechnical St<strong>and</strong>ardization, asst<strong>and</strong>ards EN 50470-1, -2 <strong>and</strong> -3.Type approval <strong>and</strong> initial verification via NMiAccording to MID, type approval follows the directive’sAnnex B; the product must fulfill relevant parts of EN 50470<strong>and</strong> be assessed by a Notified Body that then issues a certificate<strong>for</strong> that product. We use NMi, an independent expert <strong>for</strong>metrology testing, certifying <strong>and</strong> calibrating, <strong>for</strong> this task.ABB has selected to do initial verification. This means that allABB <strong>meters</strong> described here are individually tested to ensurethat they are equivalent to the type approval.Accredited calibration laboratory <strong>and</strong> audits ensure complianceTo ensure that the calibration <strong>and</strong> verification of ABB electricity<strong>meters</strong> meet MID dem<strong>and</strong>s, we have our own accreditedcalibration laboratory that operates under the auspices ofSWEDAC, the Swedish Board <strong>for</strong> Accreditation <strong>and</strong> Con<strong>for</strong>mityAssessment. Each meter is stamped with the codeSE1818, showing that it has been calibrated <strong>and</strong> approved inthis laboratory.Finally, own manufacture with an accredited laboratory <strong>and</strong>Annex D approval means that both NMi <strong>and</strong> SWEDAC per<strong>for</strong>mregular audits to ensure that our processes <strong>and</strong> toolsper<strong>for</strong>m as required.RECOGNISEDCE 074MID makes it clear that there are several ways to certifyproducts such as electricity <strong>meters</strong>. ABB has chosen typeapproval according to Annex B <strong>and</strong> initial verification accordingto Annex D.Every electricity meter made by ABB is type approved, verified <strong>and</strong> issuedwith a certificate of compliance according to MID requirements.46 <strong>Electricity</strong> <strong>meters</strong> | 2CMC480022C0003
DimensionsO<strong>DIN</strong>single, O<strong>DIN</strong>O<strong>DIN</strong>singleBottom view,terminal areaFront viewSide view4457.4NL163.48535.8 4535.8L1Ø 4.43863.4O<strong>DIN</strong>Bottom view,terminal areaFront viewØ 5.3 Ø 7.417.5Side view57.4448535.8 45Ø 4.410563.4Terminal area,trans<strong>for</strong>mer connected meterTerminal area,direct connected meterDimensions in mm2CMC480022C0003| <strong>Electricity</strong> <strong>meters</strong> 47
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