This type vacuum interrupter is the miniaturized product,it adopts Cu-Cr contact material,cup-shaped longitudinal magnetic structure,glass insulating enclosure and silastic.It has the features of small size, large breaking capacity,high insulation level. It can be used with the corresponding indoor and outdoor vacuum circuit breaker or vacuum distribution equipments,which is widely used in Electric power,mechanism,chemical,metallurgy, mining and other industries.

Overall dimensions

Technical parameters

No. Item Unit Value
1 Rated voltage kV 12
2 Rated current A 630
3 Rated frequency Hz 50
4 Short time power frequency withstand volgate(1min) kV 42
5 Lighting impluse withstand voltage kV 75
6 Rated short circuit breaking current kA 20
7 Rated withstand current(peak) kA 50
8 Rated short circuit making current kA 50
9 Rated short-time withstand current kA 20
10 Rated duration of short circuit S 4
11 ★Rated breaking current of single capacitor bank A 630
12 ★Rated breaking current of back-to-back capacitor bank A 400
13 Rated operating sequence O-0.3g(0.5)s-CO-180s-CO
14 Breaking operations of rated short-circuit breaking current Times 30
15 Rated mechanical endurance Times 10000
16 Closing force due to bellow and atmosphere N 110±50
17 Force required to hold contacts open at full stroke N 230±50
18 Circuit resistance at lowest rated contact force μΩ ≤25
19 Rated limit erosion mm 3
20 Gas pressure inside vacuum interrupter Pa ≤1×10-3
21 Weight of moving parts kg 0.88
22 Weight of vacuum interrupter kg 3.43
23 Clearance between open contacts mm 11±1
24 Average opening speed m/s 1.0±0.2
25 Average closing speed m/s 0.65±0.15
26 Rated compressive force of contact N 1600±160
27 Contact bouncing duration at closing operation ms ≤2
28 Closing and opening non-simultaneity of three-phase contact ms ≤2
29 Rebound amplitude of opening contact mm ≤2
30 Note:★Rated characteristics to be given on request

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