Lightning current arresters for power supply systems
April 2012
Electrical Power & Protection
The modular DehnBloc M lightning current arresters are energy coordinated with Dehn’s Type 2 DehnGuard arresters without the need for additional cable lengths or decoupling coils. DehnBloc M is ideally suited for use in the main distribution board of low voltage installations to protect against surges and even direct lightning strikes.
Equipped with the latest spark gap technology, the devices combine high performance and user friendliness in a single unit. With a discharge capacity up to 50 kA (10/350 μs) devices are leakage current free and equipped with a mechanical operating state indicator.
The vibration-proof module locking system eliminates shock or vibration during transport or operation.
DehnBloc M devices incorporate double terminals, allowing series connection of the SPDs in space and cost saving ways according to the IEC 60364-5-53 requirements for nominal currents up to 125 A. The operating state/fault indication immediately provides information on the availability of the device even if no operating current is present. Apart from the standard red and green indicator, devices have an additional remote signalling output. With its floating changeover contact, the remote signal can be used as a break or make contact according to the particular circuit concept.
For more information contact Paul van As, Surgetek, +27 (0)11 792 1303, [email protected], www.surgetek.co.za
Further reading:
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...
Steaming ahead with boiler skills development
Electrical Power & Protection
As an expert in steam and boiler operations and maintenance, AES is very focused on safety, quality, technology advancement and the development of human capital. The company invests heavily in training and the promotion of talented people on an equal opportunity basis into the industrial operations environment.
Read more...
High-performance oscilloscopes
Electrical Power & Protection
RIGOL Technologies, a global leader in electronic measurement instruments, has launched two powerful additions to its oscilloscope portfolio.
Read more...
Revolutionising solar farm management with remote monitoring solutions
Electrical Power & Protection
As South Africa continues its transition to renewable energy, the efficient management of solar farms has become more critical than ever. Iritron, a leader in industrial automation and control systems, is at the forefront of this revolution, offering advanced remote monitoring solutions tailored to the unique challenges of solar farm operations.
Read more...
SKF announces wave energy technology partnership
SKF South Africa
Electrical Power & Protection
SKF and Carnegie are collaborating on the design and delivery of a power take-off system driven by the motion of a buoy that sits a few metres below the surface of the ocean and moves with the ocean’s waves.
Read more...
printer friendly version