12kv Ceramic Vacuum Interrupter for Electrical Switchgear

Vacuum interrupter for vacuum circuit breakerTD-12/2000-31.5(VAC307B)  General descriptionThe 12kV series vacuum interrupter is a top-of-the-line product that boasts a ceramic insulating shell, a middle sealing or built-in fixed shielding tube, and copper and chromium alloy contact material. The cup-shaped longitudinal magnetic electrode has been optimized to ensure uniform electromagnetic field distribution, which greatly improves the stability of the breaking capacity. Additionally, a special sophisticated process has been implemented to enhance the insulation level of the product.This exceptional product has been designed to meet the specific needs of our customers. VACEM has introduced two series of 12kV vacuum interrupters, which can be used for air insulation, embedded insulation, or external insulation protection. These interrupters are perfectly suited for use as control and protection devices in transmission and distribution electrical power grids with a frequency of 50Hz/60Hz, rated voltage of 12kV, rated current of 630A-4000A, and rated short circuit breaking current of 5kA-40kA.  VI is mainly applied to VZN63-12kV series indoor MV vacuum circuit breaker. Meets or exceeds the requirement of IEC62271-100 and E2 level in GB1984-2003.Main technical parameterSpecification of VIParameter itemUnitDataRated voltagekV12Rated currentA2000Rated frequencyHz50/60Rated short-time power frequency withstand voltage(1 min)kV42Rated lightning impulse withstand voltagekV75Rated short-circuit breaking currentkA31.5Rated peak withstand currentkA80Rated short-circuit making currentkA80Rated short-time withstand currentkA31.5Rated short-circuit durations4Rated single capacitor bank breaking currentA630Rated back to back capacitor bank breaking currentA400Breaking operation of rated short circuit breaking currenttimes30Mechanical lifetimes10000Contact closing force due to bellows and atomsphereN160±50Force required to hold contact open at full strokeN260±50Circuit resistance at lowest rated contact forceμΩ≤20Contact limit erosionmm3Internal gas pressurePa≤1.33×10-3Weight of moving partskg1.6Storage lifeyear20Specifications required for matched switchgearParameter itemUnitDataRated clearance between open contactsmm11±1Average opening speedm/s1.1±0.2Average closing speedm/s0.6±0.2Rated contact pressureN3100±200Contact bouncing duration at closing operationms≤2Closing and opening non-simultaneity of contactsms≤2Maximum rebound during openingmm≤2Rated contact strokemm3.5±0.5Product show International fairs Company show /* 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