LED power supply with PFC and dimming
September 2011
Electrical Power & Protection
Mean Well has introduced a 90 W LED power supply – LPF-90series – in order to fill the rapid growth in demand for dimming functionality in the LED lighting market. LPF-90 series is equipped with ‘three-in-one dimming functionality’ as well as built-in power factor correction. System designers are offered the flexibility to control lighting fixtures using 1-10 VDC, PWM, or changing resistance to implement brightness reduction and energy saving modes.
The supplies are fully potted in heat conducting glue (IP67 rated) and enclosed in a plastic case with 94V-0 fire prevention level. The housing is designed to withstand shock up to 5G and provide protection against dust and moisture for the internal electronic components. The series delivers up to 91% of efficiency and can operate between -40 and 70°C using only free air convection cooling.
The design complies with harmonic current limitation per EN61000-3-2 Class C with PF>0.9 if loading is over 60%. This ensures compliance with the requirements of typical lighting applications. The new models use a double isolated cable-style input/output for flexible installation with additional control wires for the dimming operation control. Other standard features include protection for short circuit, over-voltage, overload and over-temperature and compliance with global certificates UL8750, EN61347-1, EN61347-2-13, and EN55015 for lighting regulations and safety. Applications include indoor and outdoor LED lighting, wash-wall lighting and LED stage, theatre and other decorative lighting.
For more information contact Ettienne van der Westhuyzen, Current Automation, +27 (0)11 462 4253, [email protected], www.rectifier.co.za
Further reading:
Unpacking the technoeconomic case for cleaner power in wastewater plants
Schneider Electric South Africa
Electrical Power & Protection
Behind every reliable wastewater plant is an electrical system exposed to the effects of harmonics, voltage distortion and overloaded networks caused by fleets of variable speed drives on pumps and aerators.Together, they steadily drive up maintenance demands and elevate the risk of failure.
Read more...
Energy strategy as a competitive advantage for African businesses
Electrical Power & Protection
Energy is no longer simply something that businesses consume. When managed effectively, it becomes a controllable asset that supports resilience and efficiency and sets the foundation for long-term competitiveness.
Read more...
World’s fastest 14 bit arbitrary waveform generator
Vepac Electronics
Electrical Power & Protection
The ARB Rider AWG-700 from Vepac is the world’s fastest 14 bit arbitrary waveform generator, with a 20 GS/s real-time update rate and 14 bit vertical resolution.
Read more...
Transformers for mining house in Botswana
ACTOM Electrical Machines
Electrical Power & Protection
LH Marthinusen is completing the manufacture of two 30 MVA transformers for a mining house in Botswana.
Read more...
DIN-rail power supplies for reliable and efficient AC/DC conversion
Conical Technologies
Electrical Power & Protection
The Claf Power AD75-2BxxS series DIN-rail power supplies are designed for industrial automation, control systems and process environments.
Read more...
Rethinking power for Africa’s data centres
Schneider Electric South Africa
Electrical Power & Protection
Africa’s digital economy is scaling faster than its power systems. If it wants resilient, competitive and sustainable data centres, the starting point must be a grid-to-chip architecture rather than a genset-first mentality.
Read more...
The growing decentralisation of power grids
Electrical Power & Protection
The decentralisation of power generation is changing how national grids function. For electrical engineers, several new challenges and opportunities are on the horizon.
Read more...
Custom mini substations for Zambian copper mine
Electrical Power & Protection
Recent orders to supply seventeen specially engineered mini substations for an underground copper mine in Zambia reinforces Trafo Power Solution’s track record in delivering customised electrical solutons for challenging environments.
Read more...
Unifying building information into a sea of insight
Schneider Electric South Africa
Electrical Power & Protection
Facility managers realise that in order to gain the most from building automation, they can longer deploy and operate technologies in isolation. Modern, integrated building management solutions address this challenge by bringing data from multiple sources and dispersed locations like HVAC, lighting, access control, lifts, generators, field devices, energy and
Read more...
Smart power solutions for a low-carbon future
ABB South Africa
Electrical Power & Protection
As the world marked Earth Day 2026, ABB is highlighting the role of low-voltage smart power solutions in improving energy efficiency, reducing emissions and enabling more sustainable infrastructure.
Read more...
printer friendly version