By Eamonn Ryan from a SAIRAC Cape Town presentation
At the SAIRAC Cape Town Tech Talk, Marthinus Greeff from WEG South Africa discusses the vital topic of motor efficiency, emphasising its growing importance globally and its impact on South Africa’s energy landscape. The session highlights the need for more energy-efficient motors, especially with the upcoming regulatory changes in South Africa. This is Part 7 of a seven-part series.

The SAIRAC Cape Town Centre January TechTalk. SAIRAC Cape Town Centre.
- Maracanã Stadium project: The company’s involvement in providing premium-efficiency motors for the Maracanã Stadium underlines the global push for energy efficiency in large-scale facilities. This initiative is part of a broader movement towards sustainable technologies in infrastructure projects worldwide.
- Compliance with global standards: Greeff stresses that motor supply companies must meet a variety of global energy efficiency regulations and environmental standards. This includes embracing corporate responsibility initiatives and responding to the growing demand for green technologies. Staying competitive means actively promoting the energy-saving benefits of products.
- Training and knowledge sharing: The speaker invites attendees to participate in training sessions offered by the company, designed to keep employees up-to-date on technological advancements and regulatory changes in the motor industry. This training helps to ensure that teams are equipped with the knowledge to meet evolving standards.
- Regulatory challenges: The speaker acknowledges the challenges of navigating the regulatory landscape for importing IE3 motors into South Africa, such as the need for Letters of Authorisation (LOA). These regulatory hurdles can be time-consuming and resource-intensive, especially since competitors are also working to meet these requirements.
- Consultant awareness of motor specifications: There’s a conversation about how consultants often fail to pay as much attention to motor specifications as they do to other critical systems like air conditioning or refrigeration. The speaker notes that some consultants may not even be familiar with IE3 motors, emphasizing the need for greater industry awareness and education.
- Energy efficiency in air conditioning: The conversation also touches on the role of motor efficiency in air conditioning systems. While energy-efficient motors are specified in certain projects—particularly by companies like Virgin Active—there is currently no universal regulation in South Africa that mandates motor efficiency for air conditioning systems.
- Vertical shaft motors: A question about vertical shaft motors arises, with the speaker explaining that special considerations must be made for the bearing design when the motor is mounted vertically. In particular, the thrust load details will determine whether a specialized bearing setup is required.
In summary, the discussion highlights the evolving landscape of motor efficiency, the importance of regulatory compliance, and the growing need for greater awareness and education among industry professionals. From large-scale infrastructure projects to the everyday challenges of motor imports and standards compliance, these issues continue to shape the future of the motor industry, especially in a rapidly changing global market.