Surge arresters are an essential aid to insulation coordination in electrical power supply systems. Valuable equipment can be protected against lightning- and switching overvoltages.
If basic rules are kept, modern Metal oxide surge arresters offer complete protection against overvoltages. In addition they offer a failure rate of nearly 0% and a lifetime of more than 20 years.
Costs of surge arresters in electrical power supply systems are less than 1% of the worth of the equipment they protect.
High availability and low costs of surge arresters facilitate new applications like surge arresters for transmission lines. As a result surge arresters convince with a quality improvement of electrical power supply systems.
Experience of more than....
75 years with surge protective devices
20 years with metal-oxide surge arresters
10 years with polymer insulated high-voltage arresters
Porcelain, polymer and GIS arresters up to 1200 kV
Special applications for ...
SC, SVC and HVDC
seismic, heavy wind loads or heavy pollution conditions
customer specific designs, e.g. mounting configuration, etc.
MV such as plug-in arresters, traction vehicles, generator protection, limiters
Developing, manufacturing and testing in accordance with international standards as IEC and ANSI
Certified QA accreditation to ISO 9001
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