Barloworld Power has added a new LED (Light Emitting Diode) unit to its portable lighting tower line-up following the widespread success of the existing metal halide Allight range for mines and industry.

Launched locally at Bauma Africa 2013 in September, the Allight MS9 LED (light emitting diode) mobile lighting tower sets the next benchmark for energy efficiency, economy, environmental performance and safe functionality, together with the in-built durability required to withstand rugged mining and construction environments.

Designed and produced by AllightSykes, an Australian original equipment manufacturer (OEM) based in Perth, the new MS9 is the first LED lighting tower to be developed by the OEM. This now joins a comprehensive range of Allight products aimed at the construction and mining sectors, where AllightSykes has led the mobile lighting field in the Australasia region for more than two decades, as well as in markets that include the USA, Indonesia and Africa.

AllightSykes' tower line-up includes the Combilite range for heavy construction and light mining environments, and the MineSpec series, which both currently have conventional metal halide lamp specifications driven by Cat or Perkins engines. High performance is a common feature throughout to meet specific applications. At the top of the Mine-Spec range, for example, one of the configurations offered for 10,7m high wall overhang illumination is a tower equipped with twelve 2 000W metal halide lamps delivering nearly 2,3 million lumens of clear, true-white illumination for virtual 'daylight' coverage up to 300m.

Allight units are compact in design for legal on-highway towing, with the exception of purpose designed skid-mounted units, and all products meet the strict health and safety requirements of the Australian mining industry, which is one of the most regulated globally.

The Allight MS9 tower, which has a maximum raised mast height of 9m, features eight 240W LED floodlights providing a combined output of 176 424 lumens. Plus the longevity of these lamps is remarkable, equating to around 50 000 hours of life per light. Start / stop functions are remote controlled, with location tracking and conditioning monitoring via the internet.

Then there's the 'green' advantage: LED technology requires less energy to produce the same or equivalent light output compared to metal halide lamps, which in turn contributes to a reduction in the overall carbon footprint. A 300W LED lamp, for example, produces just under 100 lumens per watt (lm/W) of luminous efficacy, compared to a 400W metal halide lamp, which projects around 95 lm/W. (Watts are a measurement of the electrical power needed to operate each lamp.)

"When it comes to lighting up a work area, it's important to understand the importance of factors such as watts, lumens, lux and angle beam," explains Brett Trojanowski from Barloworld Power, based in Boksburg. (Barloworld Power is AllightSykes' southern African distributor.)

Each Allight MS9 LED tower will deliver around 50 lux over an area of 3 432m², in the process providing intense, even illumination to a distance and width of 109m and 40m, respectively, with no loss of light output after stabilisation. Photometric testing and light plots have been confirmed by a NATA (National Association of Testing Authorities) accredited laboratory in Australia.

"Due to the directional characteristics of traditional metal halide lamps, the bulb produces wasted light from the top and sides of the lamp casing," Trojanowski expands, "whilst the narrower beam angle featured on most LED lights provides illumination within the intended areas only."

Power to run the lights on the Allight MS9 is provided by a specially developed two cylinder 500 cc water cooled Perkins diesel engine running at a constant rpm of 1 500, which generates 1,9 kW (DC). The overall electrical system has an extra low voltage of 48V, removing the need for the statutory high voltage checks prescribed in the mining sector.

Rated fuel consumption is 0,89 litres per hour: since the tank holds 220 litres, this equates to approximately 247 hours of operation between refills, which passes on dual benefits in terms of convenience and economy.

Choosing between LED and metal halide towers will depend on the application. In construction, the Allight MS9 unit offers benefits such as less glare for passing traffic; instant on/off bright directional lighting; and lower noise pollution in urban environments, thanks to the quite running Perkins engine.

Adds Trojanowski: "In opencast mining, metal halide remains the safe and recommended choice for in-pit production, enabling 100 lux plus mine wide coverage where earthmoving machines operate, but for all other areas, such as haul roads, main junctions, conveyor tunnels and crushing and screening stations, LED is the preferred and cost-effective option."

Allight products are available 'off-the-shelf' or for rental via Barloworld Power’s Rental business unit, with low hour certified used options available for purchase.