Electrical Power & Protection


Dehn’s lightning and surge arresters

June 2014 Electrical Power & Protection

DEHNgate (DGA) is a family of lightning current and surge arresters designed as a cable adaptor for protecting coaxial systems such as CCTV, mobile radio stations and antenna systems from potential damage. Hybrid filter technology ensures the device functions over a wide frequency range while offering the greatest protection levels. The coaxial DGA arrester family comes in different designs to suit a wide range of applications, with the various types of connectors and arrester technologies providing optimal solutions.

The space-saving DGA FF TV can be mounted onto a DIN rail to protect video, camera and satellite systems with several outputs and is available with direct (VCD) or indirect (VCID) shield connection to avoid ground loops. For single applications, such as broadband cable connections, the device can simply be snapped into a wall-mounted adaptor. The DGA FF TV arrester is the first of its kind to have an integrated measuring output for antenna signals, allowing the system to be easily tested.

If a DC supply is required for the antenna system, such as for a remote radio head, electrical down tilt, tower top amplifier, and so on, a hybrid arrester such as DGA LG can be used. The DGA LG utilises a hybrid quarter wave shorting stub and de-coupled gas tube to pass the required RF frequencies while allowing the DC to pass through the device. With this technology you benefit from essentially three devices in one, a bandpass filter, and lightning protection for both the RF and DC signals. Because the gas tube is de-coupled from the shorting stub, the majority of the lightning energy is diverted to ground by the stub itself, allowing the gas tube to only come into action during a direct strike. This ensures the device will remain useable and maintenance free for more than 10 years.

The arresters are manufactured of top grade materials, finished in a robust tri-metal plating, and are designed to give outstanding performance and endurance.

For more information contact Alexis Barwise, Dehn Protection Southern Africa, +27 (0)74 505 0312, [email protected], www.dehn-africa.com



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

ACTOM Power Transformers celebrates 60+ years of engineering
Electrical Power & Protection
ACTOM Power Transformers is marking a major milestone with a celebratory Open Day at its Wadeville factory.

Read more...
Power portfolio with enhanced static transfer switch for critical applications
Electrical Power & Protection
Vertiv has launched the Vertiv PowerSwitch 7000, a next-generation static transfer switch that strengthens the company’s position as a complete power solutions provider.

Read more...
Why utilities must prioritise maintenance of SA’s remote data
Schneider Electric South Africa Electrical Power & Protection
The story of power generation is more than meets the eye. Beyond energy distribution and the infrastructure are invisible, point of presence data centres located the remotest parts of our country that play a fundamental role in keeping systems running

Read more...
The house that revolutionises substations
WEG Africa Electrical Power & Protection
Traditional substations have major drawbacks in terms of their construction and resilience. One solution is the E-house, a prefabricated, customised and transportable steel structure designed to house a range of electrical and automation equipment.

Read more...
Localised inverter-integrated transformer
Electrical Power & Protection
ACTOM, South Africa’s largest manufacturer, repairer and distributor of electromechanical equipment, is launching a breakthrough in renewable energy integration with its localised inverter-integrated transform

Read more...
Steinmüller Africa integrates advanced technologies at Mondi’s boiler project
Electrical Power & Protection
Steinmüller Africa is leading a boiler project at Mondi’s Richards Bay mill. The 18-month undertaking showcases the company’s blend of engineering excellence and cutting-edge technology.

Read more...
ABB innovation for energy efficiency and sustainability
Electrical Power & Protection
The application of sensor technology to reduce the operational and standby power losses of traditional current and voltage transformers can lead to energy savings of 181 MWh over a 30-year period, the lifetime of a typical switchboard in the African environment.

Read more...
UPS systems are key to keeping SA’s automotive industry up and running
Schneider Electric South Africa Electrical Power & Protection
During loadshedding, PLCs and OT systems often fail, not because they are directly tied to the factory’s core manufacturing process, but because they are now an integral part of IT infrastructure. When an IT system shuts down, the impact is far more complex than simply restarting machinery.

Read more...
ACTOM advances energy infrastructure
Electrical Power & Protection
At this critical juncture where South Africa is poised to modernise its power infrastructure, ACTOM’s Engineering Projects and Contracts (EPC) Division showcased its capabilities for the first time at Enlit Africa 2025.

Read more...
Advanced contactor solution to revolutionise motor management
Schneider Electric South Africa Electrical Power & Protection
Schneider Electric South Africa has launched the TeSys Deca Advanced, an advanced contactor solution designed to revolutionise motor management with unparalleled efficiency, reliability, simplicity and sustainability.

Read more...









While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.




© Technews Publishing (Pty) Ltd | All Rights Reserved