THE L-TRI 5 RANGE OF SWITCH DISCONNECTORS The L-TRI 5 range of switch disconnectors, incorporating proven flatchamber arcing technology, can perform a wide variety of switching functions in medium-voltage distribution systems. They are the result of more than 50 year’s experience in development and manufacture of switch disconnectors by AREVA (formerly Concordia Sprecher). The simple, low-maintenance and highly economic indoor switch disconnectors in the L-TRI 5 range have a proven service record, with hundreds of thousands of units installed and operating on a wide range of systems. L-TRI 5 switch disconnectors comply with the requirements of IEC 60694 (EN 60694) and IEC 60265-1 (EN 60265-1). Additionally, selected variants are available, complying with IEC 62271-105 (EN 62271-105). THE TRI 5 RANGE OF DISCONNECTORS By omitting the arc quenching device (flat explosion chamber and arcing blade), the L-TRI 5 switch disconnector can be used as a disconnector, type TRI 5. Because of the integrated rapid ON/OFF switching feature of the drive, the disconnector has the same short-circuit making capacity as the switch disconnector. TRI 5 disconnectors comply with the requirements of IEC 62271-102 (EN 62271-102). MAIN APPLICATIONS FOR L-TRI 5 L-TRI 5 switch disconnectors are designed for use in indoor mediumvoltage switchgear systems. They have a making capacity and are suitable for switching: > load currents > currents in ring mains > transformers, cables and overhead lines. L-TRI 5 switch disconnectors are the reliable and economic solution for refurbishment and maintenance programs, extensions, renewal or upgrading of personnel protection. SPECIAL FEATURES OF L-TRI 5 > high reliability and long service life > low operating cost due to long periods between maintenance procedures > space-saving design > high switching capability > low operating torques > suitable for use in in harsh climatic conditions > ideal as substitute for older switch disconnectors (ECOFIT measures) or disconnectors > switch disconnector-fuse combination to IEC 62271-105 (EN 62271-105) available.