Combined single phase protection
August 2008
Electrical Power & Protection
DEHN’s new DEHNventil M TT 2P modules are multipole combined lightning current and surge arresters providing an all-in-one solution for protecting single phase TT and TNCS systems against surges. The combined Class I lightning current and Class 2 over-voltage surge arresters require only 30% of the space of similar devices since no de-coupling coils are necessary between the Class I and Class 2 arresters.
The protection modules are easily installed and replaced as they are secured by a simple pressing catch mechanism. Providing maximum system availability, DEHNventil M TT 2P devices are easily installed in a variety of power supply systems eliminating the need for calculations. Their discharge capability meets protection level 1 in accordance with EN 61643-11, the highest requirements of lightning protection at present. The devices are capable of protecting equipment subject to a lightning strike with an intensity of up to 100 kA (10/350 μs).
The use of encapsulated spark gap technology reduces safety distances to adjacent components within the distribution cabinet. Even at fault currents up to 50 kA a 35 A fuse will not trip when DEHNventil M TT 2P extinguishes the follow-on current.
Indication is provided by means of green and red mechanical flags. The units can also be ordered with remote monitoring terminals. All DEHNventil devices have an additional earth terminal to allow a safe connection to the main earth rail as well as keeping the connection to the protective earth conductor of the power supply system short.
For more information contact Paul Van As, Surgetek, +27 (0)11 792 1303, [email protected], www.surgetek.co.za
Further reading:
Navigating solar energy adoption
Electrical Power & Protection
Although South Africa’s enhanced solar tax rebate has ended, solar and energy storage solutions remain accessible and achievable. By taking a proactive and strategic approach, businesses can successfully lower their operational costs, mitigate power outages, and secure long-term energy independence.
Read more...
As wind energy gains momentum, lack of grid infrastructure remains a bottleneck
Electrical Power & Protection
Interest in wind energy has gained significant momentum in South Africa, opening up new opportunities for investment. However, lack of grid infrastructure could prove to be a stumbling block in unlocking this potential.
Read more...
Portable appliance tester
Vepac Electronics
Electrical Power & Protection
The new appliance tester from Vepac is the ideal tool for testing the safety of electrical appliances in accordance with DGUV regulation 3 and BetrSichV. It enables the precise measurement of protective conductor or touch current using the equivalent leakage current method.
Read more...
Is sustainability enough any more?
Electrical Power & Protection
With the planet’s resources stretched to the brink and no signs of improvement, it is time we look beyond sustainability and explore regenerative thinking and design.
Read more...
A simple guide to understanding the importance of IP ratings
Electrical Power & Protection
When selecting electrical products for industrial, commercial or even domestic use, it is crucial to consider how well they can withstand environmental factors like dust and water. This is where ingress protection (IP) ratings come into play.
Read more...
A milestone in electrical safety
ABB South Africa
Electrical Power & Protection
Celebrating a milestone in electrical safety, ABB proudly marks the 100-year anniversary of its revolutionary Miniature Circuit Breaker.
Read more...
The power of water
Editor's Choice Electrical Power & Protection
The Alpenglow Hy4 is the world’s first water-based hydrogen combustion engine, offering a convincing alternative to traditional battery-electric vehicles and established hydrogen fuel cell designs.
Read more...
Optimising purification for green hydrogen production
Parker Hannifin - Sales Company South Africa
Editor's Choice Electrical Power & Protection
Parker Hannifin delivers advanced purification and thermal management components that enhance green hydrogen production.
Read more...
A new chapter in geothermal engineering
Editor's Choice Electrical Power & Protection
The town of Geretsried in southern Germany has become a focal point in the global shift toward renewable energy. While the world’s attention often turns to wind turbines and solar panels, a quieter but no less powerful force is at work deep beneath the surface, geothermal energy.
Read more...
Harnessing the ocean with wave energy
Editor's Choice Electrical Power & Protection
Wave energy is emerging as one of the most promising yet underutilised renewable sources. Tapping into the rhythmic, predictable power of ocean waves, this technology offers a clean, reliable alternative to fossil fuels and a valuable complement to wind and solar energy.
Read more...
printer friendly version