Electrical Power & Protection


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



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Electrical certificate of compliance (COC) for instrumentation: non-hazardous installations
June 2020, Everest Equipment & Control , Electrical Power & Protection
An instrument and control installation’s scope of work often never makes a request for a certificate of compliance: it is assumed to be an electrical function and hence many installations are non-compliant. ...

Read more...
Five tips to manage energy use while staying at home
May 2020 , Electrical Power & Protection
Covid-19 continues to impact many aspects of our lives. Many are now required to stay at home in an effort to curb the spread of the pandemic. One of the many implications of staying at home will be the ...

Read more...
Holistic approach to energy security
April 2020 , Electrical Power & Protection
As South Africans settle into the routine and inconvenience of load shedding and planning their activities around shifting electricity supply, it is businesses that are taking the biggest hit through ...

Read more...
Save energy costs with highly-efficient Delta VFDs
April 2020, ElectroMechanica , Electrical Power & Protection
Customers can realise significant savings on their total energy costs by replacing older motor starters with energy-efficient Delta variable frequency drives (VFDs), distributed locally by ElectroMechanica ...

Read more...
Utility made easy
April 2020, Schneider Electric South Africa , Electrical Power & Protection
In recognition of the growing demand for reliable power provision, Schneider Electric strives to assist network operators to deliver electricity safely and efficiently. The company’s Advanced Distribution ...

Read more...
Specialised transformers for renewable energy projects
April 2020, Zest WEG Group , Electrical Power & Protection
Zest WEG’s local transformer manufacturing facility has supplied 36 specialised photovoltaic (PV) transformers to a solar energy generation plant in the Northern Cape. According to sales team leader, ...

Read more...
Meeting the needs of the mining industry
April 2020, Varispeed (Div of Hudaco Trading) , Electrical Power & Protection
Both above and below ground, Varispeed keeps the interests of its customers top of mind, all the time. The company was recently approached by a platinum mine in South Africa to assist with a robust application. ...

Read more...
Game-changing electrical accessories
April 2020, Schneider Electric South Africa , Electrical Power & Protection
In a world where products are moving from standardised to customised, today’s consumers want high quality products that meet their specific requirements. Electrical accessories are no exception and Schneider ...

Read more...
EnI Electrical delivers at the sharp end of African contracts
March 2020, Zest WEG Group , Electrical Power & Protection
Usually the last contractor on site, electrical instrumentation and control (EC&I) specialist EnI Electrical puts extra effort into helping clients around Africa meet their scheduled start-ups. With ...

Read more...
In-house testing of transformers
March 2020, Zest WEG Group , Electrical Power & Protection
The recent installation of an impulse voltage generator at Zest WEG’s transformer manufacturing facility in Heidelberg will allow in-house testing of transformers, saving time and money for customers. According ...

Read more...