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

Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Compact universal DC power supplies
January 2021, Beckhoff Automation , Electrical Power & Protection
The three new PS power supply series from Beckhoff comprises 18 single-and three-phase DIN-rail mountable power supply units that are compact and supply output currents from 2,5 to 40 A.

Simple acquisition of energy consumption values
November 2020, Phoenix Contact , Electrical Power & Protection
By developing the new components of the EMpro product family, Phoenix Contact has found a solution that satisfies most energy data gathering applications.

Using infrared thermometers in electrical maintenance
January 2021, R&C Instrumentation , Electrical Power & Protection
Non-contact, infrared thermometers enable checks to be carried out without the risk of electric shocks or the need to shut down the facility.

When not just any battery will do
January 2021 , Electrical Power & Protection
One of the country’s most sought after battery brands, GSS batteries, is changing its name to better reflect its outstanding features.

Siemens Energy turbines generate low-emission power
November 2020 , Electrical Power & Protection
Siemens Energy helps Total achieve low-emission goals for largest LNG project in Africa.

Maintaining battery backup systems
November 2020, Comtest , Electrical Power & Protection
Standby battery backup systems play a critical role in keeping essential operations functional in the event of a utility outage.

Electrical loggers for energy savings
October 2020, Comtest , Electrical Power & Protection
Fluke energy loggers deliver a complete picture to reduce energy costs and improve the bottom line.

Power supply components and services for marine applications
October 2020 , Electrical Power & Protection
Vert Energy works closely with the marine and offshore sector offering the supply of quality branded components and the support of a comprehensive repair and maintenance service.

Mines reduce fire hazards
August 2020 , Electrical Power & Protection
Underground mines in southern, central, and west Africa have been seeing the safety benefits of dry-type transformers from Johannesburg-based Trafo Power Solutions. According to managing director ...

RS Components stocks Eaton contactors
August 2020, RS Components SA , Electrical Power & Protection
RS Components now stocks Eaton’s complete Moeller series of compact DILMT contactors. Easy to integrate in a variety of industrial machines and systems, the contactors enable space savings of up to 40%, ...