Class IEC 4 surge arrester MWD

in-lineACmedium-voltage

Silicone-housed surge arrester of IEC class station low (SL) for AC systems up to 52 kV for indoor use MWD is a shedless surge arrester with metal-oxide (MO) resistors without spark gaps directly molded in silicone housing, grey color, designed and tested according to IEC 60099-4; and it fulfills the requirement of ANSI/IEEE C62.11. Fire and smoke behavior tested and classified according to EN 45545-2. It is used for secure protection of medium voltage systems against overvoltages from atmospheric discharges and switching conditions. The product is suitable for indoor installation only. Applications • Medium-voltage dry type transformer • Air-insulated medium-voltage switchgear and panel • Medium size generator • Medium-voltage cable and cable termination • Medium-voltage motor • Other medium-voltage distribution equipment Why Hitachi ABB Power Grids? • Over 100 years of experience in overvoltage protection and more than 30 years with silicone insulation • Local and global Hitachi ABB Power Grids application support • Proven safe short-circuit current design • Design life of more than 30 years • Own production of metal-oxide (MO) resistors • Excellent protection level with low residual voltage • Maintenance free