Vacuum interrupter for HV VCB(ceramic shell, Rated) Model:SX97-TD12-40.5/1250-25
VOLTAGE RATINGS AT RATED CONTACT STROKE Parameter Unit Data
Rated frequency Hz 50
Rated Voltage kV 40.5
Rated short-time power-frequency withstand voltage (1 min) kV 95
Rated lightning impulse withstand voltage kV 185
CURRENT RATINGS Rated Current A 1250
Circuit resistance at lowest rated contact force ¦Ì¦¸ ≤30
Rated short-circuit breaking Current kA 25
Breaking operations of rated short circuit breaking current Times 20
Rated short-time withstand current kA 25
Rated duration of short-circuit s 4
Rated peak withstand current kA 63
Rated short-circuit making Current kA 63
*Rated breaking current of single capacitor bank A 630
*Rated breaking current of back-to-back capacitor bank A 400
Rated operating sequence O-0.3(0.5)s-CO-180s-CO
MECHANICAL DATA Weight of movable parts kg 4.1
Closing force due to bellow and atmosphere N 170±40
Force required to hold contacts open at full stroke N 320±30
MECHANICAL REQUIREMENTS Clearance between open contacts mm 25+3
Average opening speed(average of first 75% of contact gap) m/s 2.0±0.3
Average closing speed(average of last 30% of contact gap) m/s 0.8±0.3
Rated added external contact final force N 3100±200
Added external contact force at contact touch point N 2500±160
Contact bouncing duration at closing operation ms ≤2
Closing and Opening non-simultaneity of three-phase Contacts ms ≤2
Maximum Rebound during opening mm ≤3
LIFE Storage life years 20
Mechanical endurance Times 10000
Contacts limit erosion mm 3