High voltage polymer surge arresters
May 2002
Electrical Power & Protection
A new range of metal oxide surge arresters has been added to Tridelta's SBK Series for protecting high voltage systems up to 420 kV. Suitable for both indoor and outdoor applications, the surge arresters are designed to protect transformers and switchgear against switching overvoltages and hostile atmospheric conditions.
The gapless arresters are housed in glass fibre reinforced resin tubes (GFRR) with silicon rubber sheds. This construction gives the surge arresters a high bending strength with robust pressure relief characteristics and makes the devices ideally suited for use in highly contaminated environments.
Meeting IEC 99.4 standards, the new surge arresters provide high discharge capability in the voltage range 6-360 kV (15-62 Hz). Offering a nominal discharge current of 10 kA the surge arresters ensure low residual voltages at the equipment to be protected. The lightweight composite polymer design reduces the cost of installation and the risk of damage during transportation.
All fittings of the new arresters are manufactured from A1 alloy and stainless steel, while the various phase and earth connection options are available in stainless steel or hot dipped galvanised steel. A range of optional accessories is available including monitoring spark gaps, various surge counters and diagnostic apparatus. Tridelta is represented locally by Surge Technology.
Johan van Staden, Surge Technology
011 792 1303
[email protected]
www.surgetek.co.za
Further reading:
Navigating solar energy adoption
Electrical Power & Protection
Although South Africa’s enhanced solar tax rebate has ended, solar and energy storage solutions remain accessible and achievable. By taking a proactive and strategic approach, businesses can successfully lower their operational costs, mitigate power outages, and secure long-term energy independence.
Read more...
As wind energy gains momentum, lack of grid infrastructure remains a bottleneck
Electrical Power & Protection
Interest in wind energy has gained significant momentum in South Africa, opening up new opportunities for investment. However, lack of grid infrastructure could prove to be a stumbling block in unlocking this potential.
Read more...
Portable appliance tester
Vepac Electronics
Electrical Power & Protection
The new appliance tester from Vepac is the ideal tool for testing the safety of electrical appliances in accordance with DGUV regulation 3 and BetrSichV. It enables the precise measurement of protective conductor or touch current using the equivalent leakage current method.
Read more...
Is sustainability enough any more?
Electrical Power & Protection
With the planet’s resources stretched to the brink and no signs of improvement, it is time we look beyond sustainability and explore regenerative thinking and design.
Read more...
A simple guide to understanding the importance of IP ratings
Electrical Power & Protection
When selecting electrical products for industrial, commercial or even domestic use, it is crucial to consider how well they can withstand environmental factors like dust and water. This is where ingress protection (IP) ratings come into play.
Read more...
A milestone in electrical safety
ABB South Africa
Electrical Power & Protection
Celebrating a milestone in electrical safety, ABB proudly marks the 100-year anniversary of its revolutionary Miniature Circuit Breaker.
Read more...
The power of water
Editor's Choice Electrical Power & Protection
The Alpenglow Hy4 is the world’s first water-based hydrogen combustion engine, offering a convincing alternative to traditional battery-electric vehicles and established hydrogen fuel cell designs.
Read more...
Optimising purification for green hydrogen production
Parker Hannifin - Sales Company South Africa
Editor's Choice Electrical Power & Protection
Parker Hannifin delivers advanced purification and thermal management components that enhance green hydrogen production.
Read more...
A new chapter in geothermal engineering
Editor's Choice Electrical Power & Protection
The town of Geretsried in southern Germany has become a focal point in the global shift toward renewable energy. While the world’s attention often turns to wind turbines and solar panels, a quieter but no less powerful force is at work deep beneath the surface, geothermal energy.
Read more...
Harnessing the ocean with wave energy
Editor's Choice Electrical Power & Protection
Wave energy is emerging as one of the most promising yet underutilised renewable sources. Tapping into the rhythmic, predictable power of ocean waves, this technology offers a clean, reliable alternative to fossil fuels and a valuable complement to wind and solar energy.
Read more...
printer friendly version