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Division 3.3 The fan gas power, Pu(s) (kW), is calculated according to the measurement category test method chosen by the fan supplier:

United Kingdom

Original text. Later amendments are not shown.

  1. (a)

    where the fan has been measured according to measurement category A, fan static gas power Pus is used from the equation Pus = q · psf · kps;

  2. (b)

    where the fan has been measured according to measurement category B, fan gas power Pu is used from the equation Pu = q · pf · kp;

  3. (c)

    where the fan has been measured according to measurement category C, fan static gas power Pus is used from the equation Pus = q · psf · kps;

  4. (d)

    where the fan has been measured according to measurement category D, fan gas power Pu is used from the equation Pu = q · pf · kp.