Switched-mode power supplies from 1 to 40 A
April 2003
Electrical Power & Protection
IFM Electronic has introduced a new range of reliable switched-mode power supplies from 1 to 40 A for DIN rail mounting with a wide range of inputs of 90 to 260 V a.c. for one-phase and 340 to 576 V a.c. for three phase power supplies.
Suitable for industrial and domestic use, the power supplies meet EMC standards. All units have short circuit, overload and no-load protection, and at operating temperatures <45°C, the power supplies can be operated continuously in the overload mode. This means that they supply 10 to 20% more current in the case of overloads, while voltage is regulated down, an important feature when inductive loads are switched on.
The devices are also vibration and shock resistant, their regulated precision is better than ±2%, and the output noise suppression complies with EN 50081-1 requirements. Identical power supplies can always be operated in parallel, and due to different start-up times, the first power supply will take the nominal load, and the second, the remaining load. The type DN switched-mode power supplies can buffer short power failures up to 37 ms and for higher currents up to 10 ms.
For more information contact Chris Huxham, Shorrock Automation, 012 345 4449, [email protected], www.shorrock.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