Vacuum interrupter for vacuum circuit
breakerTD-12/4000-40(VAC308A) 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 that the electromagnetic field distribution is uniform and
reasonable, which greatly improves the stability of the breaking
capacity. Additionally, a special sophisticated process has been
implemented to improve the insulation level of the product.This
vacuum interrupter is perfect for a wide range of applications.
VACEM has introduced two series of 12kV vacuum interrupters (for
air insulation, embedded insulation, or those that require external
insulation protection) to match with relevant indoor and outdoor
vacuum circuit breakers or vacuum distribution devices. It is
especially useful as a control and protection device 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 used for VZN63-12kV series MV vacuum
circuit breaker. Meets or exceeds the requirement of IEC62271-100
and E2 level in GB1984-2003.If you're looking for a durable and
efficient vacuum interrupter, look no further than the 12kv High
Voltage Vacuum Interrupter VAC308A. With its top-of-the-line
features and exceptional performance, this product is sure to
exceed your expectations. Keywords for this product include Vacuum
Interrupter, Hv Vacuum Interrupter, and 12kv Vacuum
Interrupter.Main technical parameterSpecification of VIParameter
itemUnitDataRated voltagekV12Rated currentA4000Rated
frequencyHz50/60Rated short-time power frequency withstand
voltage(1 min)kV42Rated lightning impulse withstand
voltagekV75Rated short-circuit breaking currentkA31.5/40Rated peak
withstand currentkA100Rated short-circuit making currentkA100Rated
short-time withstand currentkA40Rated 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
atomsphereN200±50Force required to hold contact open at full
strokeN300±50Circuit resistance at lowest rated contact
forceμΩ≤15Contact limit erosionmm3Internal gas
pressurePa≤1.33×10-3Weight of moving partskg2.7Storage
lifeyear20Specifications required for matched switchgearParameter
itemUnitDataRated clearance between open contactsmm11±1Average
opening speedm/s1.1±0.2Average closing speedm/s0.6±0.2Rated contact
pressureN4500±300Contact 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
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