Surge arresters are used for protection of electrical equipment from all kind of over voltages caused by lightening or switching operations. Hitachi ABB Power Grids has more than 100 years of experience in designing and manufacturing surge arresters and protection devices.
Siemens provides a wide range of surge arrester product families for the protection of medium voltage systems and
components up to 72.5 kV. The selection of the surge arrester depends on the application to be protected:
Distribution systems Siemens’ 3EK Cage Design™ distribution class surge arrester product family is ideally suited for
the reliable protection of transformers, circuit breakers, medium-voltage switchgear / panels and distribution lines. Special applications for applications requiring a surge arrester with silicone rubber housing in combination with a
directional pressure relief device, Siemens offers the 3EQ0 product line. For the overvoltage protection of generators and motors, which require a very high short-circuit current capability, Siemens offers the 3EP-G porcelain housed surge arresters with short-circuit current capability up to 300 kA.
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