<?xml version="1.0" encoding="utf-8"?><rdf:RDF  xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"  xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"  xmlns:skos="http://www.w3.org/2004/02/skos/core#"  xmlns:map="http://www.w3c.rl.ac.uk/2003/11/21-skos-mapping#"  xmlns:dct="http://purl.org/dc/terms/"  xmlns:dc="http://purl.org/dc/elements/1.1/"><skos:ConceptScheme rdf:about="https://digilab.ptb.de/dkd/refType/vocab/">  <dc:title>Metrology Database</dc:title>  <dc:creator>German Calibration Service (DKD)</dc:creator>  <dc:contributor>Thomas Krah, Daniel Hutzschenreuter, Benjamin Gloger, Muhammed-Ali Demir, Moritz Jordan</dc:contributor>  <dc:publisher>Deutscher Kalibrierdienst (German Calibration Service)</dc:publisher>  <dc:rights></dc:rights>  <dc:subject>metrology, reference types, digital calibration certificate, certificate of conformity</dc:subject>  <dc:description><![CDATA[  ]]></dc:description>  <dc:date>2023-06-19</dc:date>  <dct:modified>2026-04-10 06:58:36</dct:modified>  <dc:language>en-US</dc:language>  </skos:ConceptScheme>  <skos:Concept rdf:about="https://digilab.ptb.de/dkd/refType/vocab/skos/475"><skos:prefLabel xml:lang="en-US">PhaseDisplacement</skos:prefLabel> <skos:definition xml:lang="en">Voltage transformer phase displacement
Phase difference between the primary and secondary voltage of a transformer, the positive direction of the primary and secondary voltage being chosen that the difference is zero for a perfect transformer.
Note: The phase displacement is said to be positive when the secondary voltage leads the primary voltage. </skos:definition> <skos:definition xml:lang="de">Transformator-Phasenverschiebung
Phasendifferenz zwischen Primär- und Sekundärspannung eines Transformators, wobei die positive Richtung der Spannung so gewählt ist, dass der Nullsphasenfehler einem idealen Transformator zugeordnet ist. 
Anmerkung: die Phasenverschiebung ist positiv definiert, wenn die Sekundärgröße der Primägröße vorauseilt. </skos:definition> <skos:scopeNote xml:lang="en">Unit: rad, degree </skos:scopeNote> <skos:scopeNote xml:lang="en">DSI Unit: \radian </skos:scopeNote> <skos:scopeNote xml:lang="en">SI Unit: 1 </skos:scopeNote> <skos:historyNote xml:lang="en">2026-04-08 Created </skos:historyNote> <skos:note xml:lang="en">Electropedia (IEC) 321-01-23 </skos:note> <skos:example xml:lang="en"> </skos:example><skos:inScheme rdf:resource="https://digilab.ptb.de/dkd/refType/vocab/"/><skos:broader rdf:resource="https://digilab.ptb.de/dkd/refType/vocab/skos/464"/>  <dct:created>2026-04-08 06:49:55</dct:created>  </skos:Concept></rdf:RDF>