Hv Gas Insulated Electrical Metal-Clad Switchgear

Product DescriptioniSafering SF6 insulated Ring Main UnitGas Insulated Ring Main UnitiSafeRing is a SF6 insulated ring main unit for the secondary distribution network. iSafeRing can be supplied in 10 different configurations suitable for most switching applications in 12/24/36 kV distribution networks. As an option, iSafeRing can be delivered as extendable ring main unit.Together, iSafeRing represent a complete solution for 12/24/36 kV secondary distribution networks.C - Cable switch moduleF - Cable switch moduleV - Cable switch moduleD - Direct cable connection moduleDe - Direct cable connection module with earthing switchM - Metering moduleModularity and external busbarAll modules except the metering module and circuit-breaker module are only 325 mm wide.Transformer protectioniSafering offers a choice between a switch fuse combination and circuit breaker with relay for transformer protection. The switch fuse combination offers optimal protection against short-circuits, while the circuit breaker with relay option offers better protection against low overcurrents. Circuit breaker with relay is always recommended for larger transformers.Normal operation conditionsThe rated characteristics of the switchgear are valid under the following ambient conditions:minimum ambient temperature: - 25 °Cmaximum ambient temperature: + 40 °CFor different temperature ranges, please contact your UNISUN sales representative.StandardsiSafeRing/iSafePlus is tested according to followingIEC-standards:IEC 62271-1/IEC 62271-100/IEC 62271-102/IEC 62271-103/IEC 62271-105/IEC 62271-200/IEC 60529: SF6 insulated Ring Main Unit Outer assemblyiSafering outer assemblyUpper front cover1. Manometer2. Nameplate module3. Short circuit indicator4. Capacitive voltage indication5. Load break / earthing switch position indicator6. Push buttons close/open operation7. Charged spring indicator8. Self-powered protection relay9. Vacuum circuit-breaker position10. Operation shaft11. Padlock deviceLower front cover12. Nameplate switchgear13. Fuse blown indicator14. Disconnector / earthing switch position indicator15. Capacitive voltage indicationCable compartment cover16. Cable compartment cover standard17. Cable compartment cover with inspection window18. Support bar (removable)Side cover19. Lifting lug20. Operating handle (standard on right hand side)   Inner assembly 1. Mechanism compartment2. SF6 gas tank3. Cable compartment4. Pressure relief areaTechnical dataSafeRingC-moduleF-moduleV-moduleSwitch disconnectorEarthing switchSwitch-fuse disconnectorDownstream earthing switchVacuum circuit-breakerEarthing switch/ disconnectorRated voltageKv12/17,5/2412/17,5/2412/17,5/2412/17,5/2412/17,5/2412/17,5/24Rated frequency 5)Hz50/50/5050/50/5050/50/5050/50/5050/50/5050/50/50Power frequency withstand voltagekV28/38/5028/38/5028/38/5028/38/5028/38/5028/38/50Lightning impulse withstand voltagekV95/95/12595/95/12595/95/12595/95/12595/95/12595/95/125Rated normal currentA630/630/630 2001) 200/200/200 Breaking capacities:       active loadA630/630/630     closed loopA650/650/650     off load cable chargingA140/140/140     off load transformerA  20/20/20   earth-faultA205/160/160     earth-fault cable chargingA117/91/91     short-circuit breaking currentkV  see2) 16/16/16 Making capacitykV52,5/40/4052,5/40/40see2)12,5/12,5/12,540/40/4040/40/40Short time current 3 sec. 3)kV21/16/1621/16/16  16/16/1616/16/16   /* January 22, 2024 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1