Dehn Blitzductor surge protection for maximum system availability
January 2016
Electrical Power & Protection
The surge arresters of the Dehn Blitzductor SP series are pluggable multi-pole DIN rail mounted arresters with integrated earthing. They can be universally used for protecting measuring and control circuits, bus systems or telecommunication infrastructure.
The arresters combine a permanently high impulse current discharge capacity up to 20 kA (8/20 µs) with an extremely low voltage protection level, thus ensuring effective protection of terminal equipment even in case of interference caused by impulse currents and surges resulting from switching operations. The arresters provide protection against vibration effects and shock up to 30 times the acceleration of gravity.
They ensure maximum system availability since the modules can be replaced without signal interruption (hot-swappable). The arrester consists of a protection module and a base part. The function-optimised design ensures both fast and easy replacement and maintenance of protection modules which house all relevant protection components. Though mechanically strong in its function, each SPD module can easily be removed by squeezing the side tabs to unlock the module. Insertion is easy and secure when the mechanical “click” is heard and felt. A mechanical reverse polarity protection ensures that a module is always installed in the correct position.
Two universal base parts are optionally available with or without signal disconnection. The Blitzductor SP arresters require minimum space, with four single lines or two pairs only covering a width of 12 millimetres. For DIN rail mounting purposes, lines of a pair belonging to each other are connected on top of one another (vertically). The universal base part not only minimises storage requirements but also eases wiring and maintenance operations. Additionally, the base part metallically bonds the arrester module to the rail allowing for easy grounding of the arrester.
The products were tested in third-party laboratories according to application and country-specific requirements and standards. For example they can be applied with SIL ratings for use in systems requiring high reliability and safety. They are also UL 497 listed.
For more information contact Alexis Barwise, Dehn Africa, +27 (0)11 704 1487, alexis.barwise@dehn-africa.com, www.dehn-africa.com
Further reading:
Strengthening the backbone of critical infrastructure
ACTOM Electrical Machines
Electrical Power & Protection
Many sectors depend on mission-critical facilities to deliver uninterrupted services. Ensuring that these operate without disruption requires equipment that can support changing energy demands, tolerate grid instability and offer strong protection and monitoring capabilities.
Read more...
Why expert O&M will secure South Africa’s energy future
Electrical Power & Protection
As more companies depend on embedded generation to stabilise operations and manage electricity costs, day-to-day performance has become one of the most critical factors influencing business continuity. This shift firmly places operations and maintenance at the centre of long-term energy reliability and financial returns.
Read more...
ACTOM delivers Africa’s first fully digital, AI-ready substation in Namibia
ACTOM Electrical Machines
Electrical Power & Protection
Namibia’s power utility, NamPower, has officially commissioned the Sekelduin 132/66/33 kV substation near Swakopmund, marking Africa’s first fully digital substation.
Read more...
Legrand strengthens high-efficiency UPS offering
Electrical Power & Protection
Legrand SA’s next-generation Keor DK single-phase uninterruptible power supply has been designed to deliver high levels of power continuity, efficiency and operational flexibility in technical and infrastructure installations where consistent power quality is essential.
Read more...
Real-time modelling is the key to a resilient, bi-directional energy future
Schneider Electric South Africa
Electrical Power & Protection
South Africa’s electrical grid is a classic example of a traditional power system, designed for one-way energy flow. This linear model worked well for decades. Today, however, it is being fundamentally disrupted, as South Africa’s ongoing energy crisis has sparked large-scale investment in distributed energy resources.
Read more...
The value of hybrid microgrids in resolving energy issues
Electrical Power & Protection
Etienne le Roux, business development manager at Aggreko, examines the value of hybrid microgrids in resolving costs, energy expectations and climate compliance.
Read more...
Are South African businesses ready for businesses to go off-grid?
Electrical Power & Protection
South Africa’s energy market is changing fast. For many companies, off-grid is no longer just a backup option or a safety net. It is the strategic choice for energy security, sustainability and predictable costs.
Read more...
Earth leakage relay
Vepac Electronics
Electrical Power & Protection
The ELR01PN from Vepac measures highly sensitive currents of 0,06 mA to 1 A and continuously displays them via an LED bar indicator.
Read more...
ABB cuts emissions and advances Mission to Zero in Argentina
Electrical Power & Protection
ABB’s electrification manufacturing plant in Argentina has achieved a major sustainability milestone under ABB’s global Mission to Zero programme.
Read more...
ABB advances low-carbon, energy-resilient manufacturing
Electrical Power & Protection
ABB is advancing its Mission to Zero programme, demonstrating how onsite renewable energy, electrification and digital energy management can deliver meaningful emissions reductions while strengthening energy resilience.
Read more...
printer friendly version