High Voltage Surge Arresters

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Tridelta Meidensha manufactures a wide range of high voltage surge arresters up to 550kV in both silicon and porcelain technologies. Silicon insulator designs utilise one of three design/construction principles: solid core, cage or tube.

Solid Core design: Mechanical stability is given by a solid core of prefabricated modules of fiberglass reinforced woven structure ensuring mechanical stability of the arrester for standard requirements.

Cage design: A cage of FRP rods around the stack of MOV block, fixed into the terminals by a patented wedge clamping system, ensures higher me- chanical strength for advanced requirements.


Tube design: A FRP tube with enclosed gas volume, inclu- ding a pressure relief device, ensures greatest possible mechanical strength, for highest mechanical requirements, i. e. for areas with high seismic activity, heavy wind load, extreme climatic conditions or additional mechanical loads.


Tridelta Meidensha have been producing hollow core porcelain arresters since 1962. Metal oxide varistors with a high energy absorption capacity and an excellent sealing system will ensure a long service life. They use porcelain from European manufacturers for the production of these arresters.


In addition Tridelta Meidensha offers an extensive range of transmission line arresters – a cost-effective solution to protect overhead transmission lines, reduce potential line outages and enhance system reliability.