Class II surge arrester PEXLIM

class IIIfor substationscompact

A flexible silicone-housed arrester family for line discharge class 2 to 5 and system voltage up to 550 kV PEXLIM is a family of silicone-housed arresters of Hitachi Energy that offer unique advantages by design to offer secure protection against overvoltages. With the silicone directly molded onto the internal components, the design is safe, secure and effective. They permit flexibility in installation and offer great value for money. PEXLIM arresters are type tested according to IEC 60099-4 and ANSI/IEEE C62.11. Also, complying with customer-specific standards. Applicable to UHV (Ultra High Voltage) applications. Applications • Protection of substation equipment • Polluted areas • Compact and angular installation • Seismic areas • Transformers and reactors • Capacitor banks • HVDC protection • Cables Why Hitachi Energy? • Minimum maintenance cost • Customizable mechanical and electrical design • Easy to install The "open-cage" design adopted by us have one of the highest mechanical strengths of the molded polymer arresters in the market. In the design Hitachi Energy has chosen silicone polymer which is highly hydrophobic and resistant to UV radiation. Each arrester is built up of one or more units. Each unit is a polymeric housing containing a single column of ZnO disks, all individually extensively routine-tested during manufacture, dispersed with the necessary spacers as determined by the electrical design for the arrester. Long arresters often require (and are supplied with) external grading rings to maintain a uniform and acceptable voltage stress along their length.