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What is the difference between the SF6 technology and the Vacuum technology used in Schneider Make MV Circuit Breaker.

SF6 and Vacuum are the two modern breaking techniques in the field of Medium Voltage. Refer the below table for the comparison of these two technologies:

Protection & Switching of: Vacuum SF6
Breaking medium Checking no yes
Failure rate (MTBF) target as SF6 4 / 10000 units per year
Sealed for life yes yes
Maintenance no no
Life time 30 years 30 years
Mechanical Endurance 10000 operations 10000 operations
Electrical Endurance 50 to 100 operations @ Isc 20 to 50 operations @Isc
Overheads Line Transformer (IEC E2 class possible higher TRV) (IEC E2 class possible higher TRV)
Motor Circuit Breaker Contactor + protection Circuit Breaker Contactor     
Capacitor Bank (IEC C1 class : low probability of restrikes) (IEC C2 class : no reignition, no restrikes)
Arc Furnace CB CB
CB + protection CB + protection

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