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Hubei Dayu Hanguang Vacuum Electric Co.,Ltd.
CN EN

Vacuum interrupter for load breaking switch TF314L

Vacuum interrupter for load breaking switch TF314L

Model：VITF12/630-20

Category：VI for load breaking switches


Product details

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Main Technical Parameter
Rated voltage12KV
Rated current630A
Rated frequency50Hz
Rated short-time Power frequency withstand voltage42kV
Rated lightning impulse withstand voltage75kV
Rated short-time withstand current20kA
Rated duration of short-circuit4 s
Rated peak withstand current50kA
Rated short-circuit making current(peak)50kA
Rated active load breaking current630A
Rated closed-loop breaking current630A
Rated cable-charging breaking current10A
Rated breaking current of single capacitor bank400A
Mechanical endurance10000 times
Closing force due to bellow and atmosphere80±30N
Force required to hold contacts open at full storke140±40N
Circuit resistance at lowest rated contact force≤45μ?
Storage life20 years
Contacts limit erosion3mm
Weight of movable parts≤0.7kg
MECHANICAL DATA REQUIRED FOR THE MATCHED VACUUM SWITCHGEAR
Clearance between open contacts9±1 mm
Contact connection stroke3±0.5mm
Average opening speed1.0±0.2m/s
Average closing speed0.6±0.2m/s
Rated added extemal contact final force900±50N
Contact bouncing duration at closing operation≤2 ms
Closing and opening non-simultaneity of three-phase contacts≤2 ms
Maximum rebound durning opening≤1.5 mm

Relevant information