Document ID: chunk:federal_register_of_legislation:F2015L01712:clause:7_28
Version: federal_register_of_legislation:F2015L01712
Segment Type: clause
Provision Reference: sch 7 cl 28
Character Range: 41608–42943

28  Equation 4—motor input power of installed HE fan (PE,i)
  For equation 3, if paragraph (b) of the definition of PE,i is applicable, PE,i is worked out using the equation (equation 4):
  where, for the ith installed HE fan:
PM,i is the mechanical power supplied to the fan impeller, being:
 (a) for a fan that has a shaft—the fan shaft power of the fan, in kilowatts; and
 (b) for a fan that does not have a shaft—the fan impeller power of the fan, in kilowatts;
  as determined from test results in accordance with section 16.
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.
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.