Surge arrester with integrated backup fuse
May 2012
Electrical Power & Protection
DEHN’s DEHNguard M .. CI with integrated arrester backup fuse is a Type 2 surge arrester consisting of a base element and a plug-in protection module. The compact design of the protection module includes both the actual surge arrester and an arrester backup fuse. The DEHNguard M .. CI solves the often difficult problem of choosing a suitable backup fuse. With an integrated backup fuse, the user no longer has to worry about arrester specific dimensioning requirements such as short-circuit information and impulse current carrying capacity.
The arrester backup fuse integrated into the protection module is coordinated to the necessary impulse current carrying capacity. Thus the DEHNguard M..CI is the ideal device for protection against overvoltages. It has a space saving design with only one module.
With the thermodynamic control monitoring device, the surface temperature of the high capacity varistor as well as the height of the discharge current are used for evaluation. The state of each protective circuit is shown by means of a green or red visual mechanical indicator which needs no power to operate. The red visual indicator signals the activation of the thermodynamic control monitoring device as well as the integrated arrester backup fuse. This status indication, required according to VDE 0100-534, is performed for the line conductor paths and for the N-PE path.
The DEHNguard M ..CI product range also has features such as a module locking system, a floating signalling contact and a distinctive protection module coding. The protection module can be replaced easily without tools by operating the user-friendly release button.
For more information contact Paul van As, Surgetek, +27 (0)11 792 1303, info@surgetek.co.za, www.surgetek.co.za
Further reading:
Modular UPS system with scalable, high-availability architecture
Electrical Power & Protection
Legrand South Africa has launched its fifth-generation TriMOD three-phase modular UPS, available from 10 to 80 kW. The system features hot-swappable modules, multiple input/output configurations, and up to 99% efficiency in Eco Mode, designed for data centres and critical industrial environments.
Read more...
Accurate illuminance measurement for safer, more efficient environments
Electrical Power & Protection
The Sonel LXP-10A illuminance meter is designed for accurate measurement of lighting levels in industrial environments where adequate illumination is essential.
Read more...
Why mining operations need local lightning early warning
Senseca
Editor's Choice Electrical Power & Protection
Lightning can develop into a serious mining hazard before the first local strike, leaving crews little time to stop work and reach safety. Local early-warning technology can provide valuable lead time, allowing mines to connect developing storm conditions to defined trigger actions that protect people, explosives and equipment.
Read more...
South Africa’s dirtiest fuel is building its most resilient boilers
Electrical Power & Protection
Steinmüller Africa argues that duff coal, the low-grade fines and discards stockpiled over decades, can now underpin reliable, compliant industrial boilers using mature circulating fluidised bed combustion technology, turning a long-standing liability into a phased energy transition pathway.
Read more...
Retrofitting for sustainability
Schneider Electric South Africa
Electrical Power & Protection
As budgets tighten and sustainability targets increase, retrofit and modernisation strategies are gaining traction across Africa, allowing organisations to upgrade only what limits performance while preserving existing infrastructure and extending asset life.
Read more...
USB-Datalogger for voltage 0 to 30 V DC
Vepac Electronics
Electrical Power & Protection
The PeakTech 5186 is a data logger for DC voltages from 0 V to 30 V with terminals on the top of the device.
Read more...
Pole-top boxes for smarter, more secure electricity networks
Electrical Power & Protection
As South Africa accelerates the rollout of smart prepaid electricity metering, innovative enclosure technology from Power Process Systems is helping utilities improve network security, reduce electricity theft and protect critical electrical infrastructure.
Read more...
Simplifying electrical design compliance
Electrical Power & Protection
Referro Systems highlights how Rockwell Automation’s Global SCCR Tool simplifies short-circuit current rating compliance for complex industrial electrical systems.
Read more...
Engineering resilience into Africa’s energy future
Electrical Power & Protection
Zutari’s managing director of water explains how Burundi’s landmark Jiji and Mulembwe hydropower projects demonstrate what resilient, climate-adapted infrastructure delivery looks like – and what this means for Africa’s energy future.
Read more...
Voltage Tester with LED-Display
Vepac Electronics
Electrical Power & Protection
The PeakTech 1094 is a reliable and robust two-pole voltage tester that has been specially developed for the safe and precise measurement of AC and DC voltages in the 12 to 400 V range.
Read more...
printer friendly version