MV SF6 circuit-breakers for secondary distribution PPMV – Product Management HD4/R MV SF6 circuit-breakers for secondary distribution

HD4/R Core technology Upper terminal Fixed contact Blasting nozzles Fixed arcing contact Moving arcing contact Moving contact Lower terminal Insulating tie-rod Epoxy resin cylinder Anti-explosion valve © ABB Group Month DD, Year

Quenching technique – SF6 Autopuffer HD4/R Quenching technique – SF6 Autopuffer (1) (2) (3) (4) Circuit breaker closed Moving contact separation Arcing contact separation Circuit breaker open © ABB Group Month DD, Year

HD4/R Main components Protection relay (accessory) Shaft seat for charging the closing springs Closing pushbutton Opening pushbutton Charged/discharged closing spring indicator (accessory) CB contacts status (open/closed) SF6 pressure status locking and signalling device (accessory) MV terminals Current transformers/sensors (accessory) Epoxy resing poles with assembled SF6 auto-puffer Key lock in open position © ABB Group Month DD, Year

HD4/R Integrated solution © ABB Group Month DD, Year

Wide range of accessories HD4/R Wide range of accessories Shunt opening release Auxiliary contacts (5 to 12) Key lock in open position Additional shunt opening release Opening solenoid (PR521) Shunt closing release Motor charger of closing spring Thermal relay for protecting motor charger Undervoltage shunt opening release Charged/discharged spring signalling contact Pushbutton protection Padlock Wheels Two-level pressure switch Three-level pressure lamps Locking device for insufficient SF6 pressure Audioscript: HySec has the possibility to be equipped with a wide range of accessories, both for the circuit breaker part and the disconnector and earthing switch part. © ABB Group Month DD, Year

Reliability and flexibility HD4/R Reliability and flexibility Reliability - 10.000 Close-open operations - Maintenance-free - SF6 auto-puffer technology ideal for critical loads No current chopping No restrike Reduced overvoltage Flexibility - Wide range of accessories - Possibility to have relays and CTs on board - Interchangeable with VD4/R © ABB Group Month DD, Year

HD4/R SF6 circuit breaker Rated Voltage [kV] Rated Current [A] SF6 circuit breaker for secondary distribution AIS On board relay and CTs/sensors Interchangeable with VD4/R Command able to do fast operation cycle: O-0.3s-CO-15s-CO Rated Voltage [kV] 12 17.5 24 36 Rated Current [A] 1250 Short time current [kA] 25 (3s) 20 (3s) 16 (3s) Mechanical class M2 Electrical class E2, C2 Audioscript: HySec is the first ABB multifunction apparatus integrating the functions of vacuum circuit breaker, SF6 line disconnector and SF6 earthing switch. Audioscript_1: Its rated voltage is up to 24 kV, while its rated current is up to 600 A. Its breaking capacity is up to 16 kA, which is also its short time current withstand capability for 1 second. Audioscript_2: HySec is able to perform 10.000 mechanical close-open operations. Its electrical life is classified as E2 and, up to 400 A, C2 for back to back capacitor switching. Audioscript_3: HySec is also able to perform the fast operation cycle. © ABB Group Month DD, Year

SF6 circuit breaker optimized HD4/RE SF6 circuit breaker optimized SF6 circuit breaker for secondary distribution AIS On board relay and CTs/sensors Interchangeable with VD4/R and HD4/R optimized and compact Rated Voltage [kV] 12 17.5 24 Rated Current [A] 630 Short time current [kA] 16 (1s) Mechanical class M1 Electrical class E1 Audioscript: HySec is the first ABB multifunction apparatus integrating the functions of vacuum circuit breaker, SF6 line disconnector and SF6 earthing switch. Audioscript_1: Its rated voltage is up to 24 kV, while its rated current is up to 600 A. Its breaking capacity is up to 16 kA, which is also its short time current withstand capability for 1 second. Audioscript_2: HySec is able to perform 10.000 mechanical close-open operations. Its electrical life is classified as E2 and, up to 400 A, C2 for back to back capacitor switching. Audioscript_3: HySec is also able to perform the fast operation cycle. © ABB Group Month DD, Year