National Regulator for Compulsory Specifications Act, 2008 (Act No. 5 of 2008)NoticesCompulsory Specification for Efficiency Requirements of Electric Motors (VC9113)1. Scope |
| 1.1 | This compulsory specification covers the efficiency requirement for electric motor, rated for operation on a sinusoidal voltage, that: |
| 1.1.1 | have two (2), four (4), six (6) or eight (8) pole; |
| 1.1.2 | have rated voltage Un above 50 V and up to and including 1 000 V; |
| 1.1.3 | have a rated power Pn from 0,75 kW to 375 kW ; |
| 1.1.4 | are marked with any ambient temperature within the range of -20 °C to + 60 °C (smoke extraction motors with a temperature class of up to and including 400 °C are covered by this compulsory specification); |
| 1.1.5 | are marked with an altitude up to 4 000 m above sea level; |
| 1.1.6 | Motors with flanges, feet and/or shafts with mechanical dimensions different from SANS 60072-1 are covered by this compulsory specification; |
| 1.1.7 | Geared motors are covered by this compulsory specification including those incorporating non-standard shafts and flanges. |
| 1.2 | This compulsory specification does not cover the efficiency requirements of the following electric motors: |
| 1.2.1 | Single-speed motors with 10 or more poles or multi-speed motors; |
| 1.2.2 | Motors with mechanical commutators (such as DC motors); |
| 1.2.3 | Motors completely integrated into a machine; |
| 1.2.4 | Brake motors when the brake is an integral part of the inner motor construction and can neither be removed nor supplied by a separate power source during the testing of motor efficiency; |
| 1.2.5 | Motors designed to operate wholly immersed in a liquid; |
| 1.2.6 | Smoke extraction motors with a temperature class above 400 °C. |