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12KV vacuum interrupter Technical Specification of Vacuum Interrupter No. Main Technical SpecificationType12680 TD32-12/630-12.5TD32-12/630-16 VOLTAGE RATINGS AT RATED CONTACT STROKE 1 Rated frequency Hz50 2 Rated Voltage kV12 31 Rated short-time power-frequency withstand voltage (1 min) kV42 4 Rated lightning impulse withstand voltage kV75 CURRENT RATINGS 1 Rated Current A630 2 Circuit resistance at lowest rated contact force mW≤35 3 Rated short-circuit breaking Current kA12.516 4 Breaking operations of rated short circuit breaking current Times30 5 Rated short-time withstand current kA12.516 6 Rated duration of short-circuit s4 7 Rated peak withstand current kA31.540 8 Rated short-circuit making Current kA31.540 9 Rated breaking current of single capacitor bank A630 10 Rated breaking current of back-to-back capacitor bank A400 11 Rated operating sequence O-0.3s-CO-180s-CO MECHANICAL DATA 1 Weight of movable parts kg0.35 2 Closing force due to bellow and atmosphere N60±30 3 Force required to hold contacts open at full stroke N160±30 MECHANICAL REQUIREMENTS 1 Clearance between open contacts mm8±1 275% Average opening speed(average of first 75% of contact gap) m/s1.2±0.2 330% Average closing speed(average of last 30% of contact gap) m/s0.8±0.2 4 Rated added external contact final force N1200±2001500±160 Added external contact force at contact touch point 840±601100±70 5 Contact bouncing duration at closing operation ms≤2 6 Closing and Opening non-simultaneity of three-phase Contacts ms≤2 7 Maximum Rebound during opening mm≤2 LIFE 1 Storage life years20 2 Mechanical endurance Times10000 3 Contacts limit erosion mm3 NOTES 1. Meets or exceeds the electrical endurance requirements of class E2 for autoreclosing duty per IEC 62271-100 and GB 1984-2003. 2. Rated characteristics to be given on request. 3. Rated insulation values require external insulation,such as SF6,oil or solid dielectric material etc.