Sparks Electrical News September 2020

LIGHTING

12

Energy Efficiency Award for Green Point Athletics Stadium lighting

Shuttle Lighting’s master zone controller

L ighting control has been a hot topic for a number of years. Controlling light properly not only enhances ambience and experience, it brings a level of convenience and helps to save energy and lamp lifetime by using light when and where it is needed most. Various technologies exist that perform light- ing control. These differ in their application, con- trol method, cost of installation, complexity of commissioning and maintenance, etc. While sys- tems are often marketed as easy to install, con- figure and operate, both installers and users find a variety of challenges in getting the systems to work as expected. Shuttle Lighting’s master zone controller is a simple lighting controller that connects any number of Shuttle bell-press and/or push on/off rotary dimmers to one switch. It is designed for a dual function: simple individual zone control with a master override to synchronise all zones or to control a number of dimmers together to create a high wattage virtual dimmer. The novel master zone controller has been used in many conference and meeting rooms, venues and event spaces. It fits in small spaces and requires no additional wiring or components, making it an easy to install and operate lighting control product.

A t the 2019 ECA(SA) Presidential Excellence Awards, elex khanyisa Electrical Contractors received the Best Contributor to Energy Effi- ciency award for the retrofit of Green Point Athletics Stadium’s track and pitch foodlighting with high effi- ciency LED foodlighting. BEKA Schréder supplied the locally manufactured LED foodlights. The project was tasked by the City of Cape Town under the Detailed Energy Audits and Lighting Ef- ficiency Interventions at Council Facilities contract; the purpose being primarily to decrease the energy demand of the facility but also to increase the value of the Stadium as a City asset. Green Point Athletics Stadium, partially demol- ished before the 2010 FIFA World Cup to make way for the Cape Town Stadium, was subsequently refurbished. The facility is a strategic asset, recon- structed as a recreational facility for enjoyment by the public. The LED retrofit has reinstated the facil- ity to a high-quality venue with ample lighting at lower operating costs and the upgrade is expected to attract new opportunities for international sport- ing events. The project entailed replacing 35 2 kW high- intensity discharge foodlights with lower wattage LED foodlights, while achieving the same or higher quality light on the track and pitch. elex khanyisa’s lighting design increased the lighting levels and lighting quality, while reducing the power demand of the system by 23 kW, a 33% reduction in load. The design work was a collaborative effort between elex khanyisa project manager, Jamie Pothier, Grant Kemp and Therlo Brown from BEKA Schréder, and Senior Professional Officer Oliver Stotko from the City of Cape Town. L EDs shoot, LEDs score! In the showdown be- tween HID luminaires and LED sports light- ing, team LED is hitting aces, left, right and centre, and running circles around the opposition. When the teams brace for a tackle, the metal halide luminaires simply cannot match the strength of the LED side. It is a brightness battle and ‘endurabil- ity’ test that will push the luminaires to their limits. And with reduced energy expenditure, lower main- tenance costs, and brighter, high-performance illu- mination, it is not hard to see why team LED keeps coming out on top. Want to invest in the champion of lighting for your field, court, swimming pool, or stadium? Keep reading to learn more about the benefits of LED sports lighting. Did you know LEDs consume less than half the en- ergy of traditional bulbs? You can save up to 80% on energy costs when you make the switch, and this makes LEDs a far more cost-effective option long term (not to mention a more environmentally friendly one too). And because LEDs consume less energy, they last longer. A whopping four to five times longer, which saves you spending more on regular replacements. So, when it comes to energy expenditure, LED sports lighting is a win-win-win. Three reasons to install LED sports lighting: 1. LEDs reduce energy expenditure

“This forms part of the City of Cape Town’s over- all LED retrofitting programme, which has been ongoing for almost a decade. The city’s emphasis on cost and energy efficiency, while honouring a climate-friendlier way of operating, remains an im- portant driving force to enable a more future-fit de- velopment pathway for Cape Town,” said the City’s Sustainable Energy Markets Department, Senior Professional Officer Oliver Stotko. The benefits of LED foodlights over the previous HID foodlights include: • Lower rated wattage of lights (previous foodlight was 2 kW; the LED foodlight is 1.5 kW). • Reduced maintenance costs (LED foodlights are likely to last three times longer than metal halide lights). • LED foodlights switch on immediately, while the previous foodlights had a 15-30 min warm-up period. • LED foodlights have lower inrush currents when switching on – maximum demand is predomi- nantly infuenced by this at the stadium. The previous foodlights resulted in a very low power factor (0.8) and consequent high maximum demand when in operation, while the new LED foodlights have a much lower infuence on power factor (0.98). BEKA Schréder locally develops and manufac- tures LED lighting products, designed and suitable for African conditions. The company is proud to have worked with elex khanyisa electrical contrac- tors and the City of Cape Town to provide a suc- cessful LED foodlighting solution for this prestig- ious project. 2. LEDs require less maintenance The ongoing cost of maintaining metal halide luminaires causes concern for many sporting or- ganisations. Metal halide luminaires decay quickly. In many cases, the lumens will reduce to about half their initial count within the first 7500 hours of the bulb’s life. This causes the lighting to ‘dim’, which often results in maintenance and bulb re- placement. When you pair the cost of the new hal- ide bulb with the manpower it takes to install, your expenses skyrocket. As mentioned earlier, a huge benefit of LED fittings is that they last longer, and so require less maintenance. In fact, for the first 50 000 hours of use, LED sports lighting gener- ally does not require any maintenance, apart from the occasional wipe down. Unlike HID systems, LED fittings do not depend on annual bulb re- placements, nor does your budget include the hire of a scissor lift. LED lights generally have a CRI (Colour Rendering Index) of 80+, which means the illuminated area is sharper and brighter, with colours appearing as they should. Higher CRI gives players and athletes better visibility when using the sports ground, and allows spectators to view the game or competition from the side-lines. For example, a soccer player will be Enquiries: +27 (0)21 510 8900 3. LEDs provide better definition and vis- ibility

Enquiries: www.shuttlelighting.com

Why you should upgrade to LED sports lighting

than LEDs, making them inferior when it comes to sports lighting.

able to see the ball clearly and therefore perform better, giving the audience a better game to watch. While metal halide lamps do deliver good CRI when fresh out of the box, they deteriorate at a faster rate

Enquiries: www.pioledlighting.co.za

SPARKS ELECTRICAL NEWS

SEPTEMBER 2020