Electrical Power & Protection

Varistor-based surge arrester

July 2014 Electrical Power & Protection

Saltek’s SLP-275 V/1+1 is a Class 2 combined varistor-based surge arrester and an encapsulated spark gap connected in the 1+1 circuit mode. It is designed for installation in single phase low-voltage distribution boards and switchgear installations at the boundary of LPZ 1 and LPZ 2 zones. The surge arrester protects equipment against the overvoltage effects induced during a lightning strike and switching surges.

The varistor module used between phase and neutral is designed to withstand a peak surge current of 40 kA (8/20) and to limit the voltage to less than 1,25 kV. The gapped arrester used to protect the neutral is designed to withstand peak surge currents of 40 kA (8/20) and limit the voltage to less than 1,25 kV.

All units have DIN rail mounting and the modules are keyed to ensure that live and neutral modules are not interchanged by accident. In addition, the modules are clearly colour coded to ensure easy identification. If required, an optional remote status signalling feature is available in addition to the visual fault signal which is indicated in the glass window.

For more information contact Esias Labuschagne, Surgetek, +27 (0)11 792 1303, info@surgetek.co.za, www.surgetek.co.za

Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Energy data acquisition made easy
August 2021, 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.

Power supply for machine applications
August 2021, Vepac Electronics , Electrical Power & Protection
With vacuum encapsulated technology, MTM Power’s focus is on encapsulated, robust, long-life, temperature-resistant and maintenance-free power supply modules.

Supermarkets heat stores with surplus energy from refrigeration units
Technews Industry Guide: Sustainable Manufacturing 2021, Danfoss , Electrical Power & Protection
With climate change and the pressure for lower environmental impact, supermarkets are rapidly investing in green energy transition.

Citrus farming with sustainability in mind
Technews Industry Guide: Sustainable Manufacturing 2021 , Electrical Power & Protection
Sunny climate and vitamin C prove to be a winning combination for one of South Africa’s largest citrus farmers.

Energy from the power of the moon
Technews Industry Guide: Sustainable Manufacturing 2021, SKF South Africa , Electrical Power & Protection
Fully integrated holistic power train solution designed by SKF now installed at the Scottish sea.

Transformer for special applications
July 2021, ASSTech Process Electronics + Instrumentation , Electrical Power & Protection
The Jumo IPC 300 was developed for the control of heating loads that previously required an additional transformer for power control.

ABB launches new MCB range
July 2021, ABB South Africa , Electrical Power & Protection
The circuit breaker industry sees the local launch of a high-quality product as ABB Electrification introduces its new range of 3 kA SR200T miniature circuit breakers.

Hitachi ABB Power Grids powers SA to a greener future
August 2021 , Electrical Power & Protection
The move towards decentralised power grids and a large-scale adoption of renewable energy will significantly alter the energy market in South Africa.

The Pepperl+Fuchs M-LB-5000 surge protection system
June 2021, Pepperl+Fuchs , Electrical Power & Protection
Using the modular M-LB-5000 system with diagnostics eliminates extensive testing and operational interruptions. It is supplemented by the M-LB-2000 system for applications in which a minimum specification is sufficient.

Beckhoff expands power supply portfolio
June 2021, Beckhoff Automation , Electrical Power & Protection
Buffer and redundancy modules for 24/48 VDC power supply increase system availability.