Document ID: chunk:federal_register_of_legislation:F2015L01712:clause:7_30
Version: federal_register_of_legislation:F2015L01712
Segment Type: clause
Provision Reference: sch 7 cl 30
Character Range: 43618–44457

30  Equation 6—overall driven fan efficiency of installed HE fan (𝜂i) for components tested separately
  For equation 3, if paragraph (b) of the definition of 𝜂i is applicable, 𝜂i is worked out using the equation (equation 6):
  where, for the ith installed HE fan:
PU,i is the fan air power or fan static air power (as appropriate) in kilowatts as determined from test results in accordance with section 16.
PM,i is the mechanical power supplied to the impeller of the fan, and has the same meaning as in section 28.
𝜂T,i is the transmission efficiency of the transmission of the fan, and has the same meaning as in section 28.
𝜂M,i is the motor efficiency of the motor of the fan, and has the same meaning as in section 28.
𝜂C,i is the electrical drive efficiency of the controller of the fan, and has the same meaning as in section 28.