Document ID: chunk:federal_register_of_legislation:F2015L01712:schedule:3
Version: federal_register_of_legislation:F2015L01712
Segment Type: schedule
Provision Reference: sch 3
Character Range: 72666–74415

Schedule 3—High efficiency fan installations—transmission efficiency

 (1) For equation 4 and equation 15 (section 28 of this determination and section 4 of Schedule 1), for the definition of ηT,i, if the ith fan has:
 (a) a transmission type indicated in the table below; and
 (b) a mechanical power supplied to the fan impeller (PM,i) within a range indicated in the table;
  the transmission efficiency of the transmission of the fan (𝜂T,i) is given by the corresponding entry in the table.

High efficiency fan installations:
Transmission efficiency
                                    Transmission efficiency (𝜂T,i)
Transmission type                   PM,i < 1 kW                     1 kW ≤ PM,i < 5 kW  5 kW ≤ PM,i
Direct drive transmission           1                               1                   1
High efficiency transmission        0.94                                                0.98
Low efficiency transmission         0.89                                                0.96

 (2) In this Schedule:
direct drive transmission means a transmission system that transmits power directly from the motor to the impeller or to a rigid impeller shaft without gearboxes, belts or flexible couplings, such that the motor and the impeller rotate at the same speed.
high efficiency transmission means a transmission for a fan using:
 (a) a belt with a width at least three times the height of the belt; or
 (b) a toothed belt; or
 (c) toothed gears.
low efficiency transmission means a transmission for a fan other than a direct drive transmission or a high efficiency transmission.
PM,i is the mechanical power supplied to the fan impeller, and is defined in section 28 of this determination or section 4 of Schedule 1, as appropriate.