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

Vacuum interrupter for indoor circuit breaker TD524H

Vacuum interrupter for indoor circuit breaker TD524H

Model：VITD40.5/2000-31.5

Category：VI for indoor circuit breakers

Product details

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Main Technical Parameter
Rated voltage40.5KV
Rated current2000A
Rated frequency50Hz
Rated short-time Power frequency withstand voltage95kV
Rated lightning impulse withstand voltage185kV
Rated short-circuit breaking current31.5kA
Rated short-circuit making current(peak)80kA
Breaking operations of rated short circuit breaking current30 times
Rated breaking current of single capacitor bank630A
Rated short-time withstand current31.5kA
Rated peak withstand current80kA
Rated duration of short-circuit4 s
Mechanical endurance10000 times
Closing force due to bellow and atmosphere250±50N
Force required to hold contacts open at full storke330±60N
Circuit resistance at lowest rated contact force≤20μ?
Storage life20 years
Contacts limit erosion3mm
Weight of movable parts≤4kg
MECHANICAL DATA REQUIRED FOR THE MATCHED VACUUM SWITCHGEAR
Clearance between open contacts22±2 mm
Contact connection stroke3.5±0.5mm
Average opening speed(average of 75% contact gap)1.8±0.25m/s
Average closing speed(average of last 30% contact gap)0.8±0.15m/s
Rated added extemal contact final force4000±200N
Contact bouncing duration at closing operation≤3 ms
Closing and opening non-simultaneity of three-phase contacts≤2 ms

Relevant information