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

Vacuum interrupter for load breaking switch TF314A

Model:VITF12/630-20

Category:VI for load breaking switches

Product details

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Main Technical Specification
VOLTAGE RATINGS
Rated voltage(Ur)kV12
Rated short-time(1min)power-frequency withstand voltage(Ud)kV42
Rated lightning impulse withstand voltage(Peak)(Up)kV85
Rated frequency(fr)Hz50
CURRENT RATINGS
Rated current(Ir)A630
Circuit resistance at lowest rated contact forceμΩ45
Rated short-time withstand current(lk)kA20
Rated duration of short-circuit(tk)s4
Rated peak withstand current(lp)kA50
Rated short-circuit making current(IMc)kA50
Rated active load breaking current(l1)A630
Rated closed-loop breaking current(l2a)A630
Rated cable-charging breaking current(l4a)A10
Rated breaking current of single capacitor bank(lsb)A400
Rated breaking current of back-to-back capacitor bank(Ibb)A400
MECHANICAL DATA
Weight of movable partskg≤0.7
Closing force due to bellow and atmosphereN80±30
Force required to hold contacts open at full strokeN140±40
MECHANICAL REQUIREMENTS
Clearance between open contactsmm9±1
Average opening speed (contact close position~75%contact gap)m/s1.0±0.2
Average closing speed (30%contact gap-contact close position)m/s0.6±0.2
Rated added external contact final forceN900±50
Contact bouncing duration at closing operationms≤2
Closing and opening non-simultaneity of three-phase contactsms≤2
Maximum rebound during openingmm≤1.5
LIFE
Storage lifeyears20
Rated mechanical enduranceTimes10000
Contacts limit erosionmm3

Relevant information

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