The requirements for part load (PL) and over load (OL) conditions are set at slightly lower values than those for 100 % flow (ηΒΕΡ).
Commission Regulation (EU) No 547/2012 of 25 June 2012 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodesign requirements for water pumps (Text with EEA relevance)
The requirements for part load (PL) and over load (OL) conditions are set at slightly lower values than those for 100 % flow (ηΒΕΡ).