Isolating spark gaps for explosive areas

November 2006 Electrical Power & Protection

DEHN's EXFS range of isolating spark gaps is designed for installation in conductive system parts which cannot be connected directly to earth in hazardous areas, typically in cathodic corrosion protection. The devices are manufactured in accordance with IEC 61024-1 and IEC 62305 lightning and equipotential bonding in hazardous areas.

The explosion-proof ExFS L 100 kA (8/20) models are designed specifically for bonding in hazardous environments and are used in cathodic protection. Available with a flexible cable to suit 20 to 320 mm flanges, the type ExFS L are installed at insulating flanges or at insulating joints.

The type EXFS KU are designed for connecting various earthing systems in case of direct or indirect lightning effects in indoor or outdoor buildings, damp outdoor places, and underground areas. These units are enclosed in a damp-proof PVC housing and are ideal for underground installation at insulating couplings.

DEHN is represented locally by Surgetek.

For more information contact Paul Van As, Surgetek, +27 (0) 11 792 1303/4/5, [email protected], www.surgetek.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...

---