Document ID: chunk:federal_register_of_legislation:F2015L01712:clause:1_4
Version: federal_register_of_legislation:F2015L01712
Segment Type: clause
Provision Reference: sch 1 cl 4
Character Range: 58801–60108

4  Equation 15—calculation of motor input power, PE,i
  For subsection 3(2) of this Schedule, PE,i is calculated using the following equation (equation 15):
  where:
PM,i is the mechanical power supplied to the fan impeller of the fan, being:
 (a) for a fan that has a shaft—the fan shaft power, in kilowatts; and
 (b) for a fan that does not have a shaft—the fan impeller power, in kilowatts;
  as determined from test results in accordance with section 16 of this determination.
𝜂T,i is the transmission efficiency of the transmission of the fan, and is determined in accordance with Schedule 3.
𝜂M,i is the motor efficiency of the motor of the fan, as determined from test results in accordance with section 16 of this determination.
𝜂C,i is the electrical drive efficiency of the controller of the fan, and is:
 (a) if a variable speed drive is installed (whether or not as part of the project) and:
 (i) the manufacturer or supplier has publicly released data in Australia relating to the electrical drive efficiency of the controller—the electrical drive efficiency ascertained in accordance with that data that corresponds to the point at which the impeller is operating at optimum efficiency; and
 (ii) if subparagraph (i) does not apply—0.95; and
 (b) if a variable speed drive is not installed—1.