TD-12/630-20

This type vacuum interrupter is the ceramic miniaturized product,it adopts Cu-Cr contact material,cup-shaped longitudinal magnetic structure,ceramic insulating enclosure with large creepage distance.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 voltage kV 42
5 Lighting impluse withstand voltage kV 75
6 Rated short circuit breaking current kA 20
7 Rated withstand voltage(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 current A 630
12 ★Rated breaking current of back-to-back capacitor bank A 400
13 Rated operating sequence O-0.3s-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 80±30
17 Force required to hold contacts open at full stroke N 150±50
18 Circuit resistance at lowest rated contact force μΩ ≤30
19 Rated limit erosion mm 3
20 Gas pressure inside vacuum interrupter Pa ≤1×10-3
21 Weight of moving parts kg 0.52
22 Weight of vacuum interrupter kg 1.60
23 Clearance between open contacts mm 9±1
24 Average opening speed m/s 1.2±0.2
25 Average closing speed m/s 0.8±0.2
26 Rated compressive force of contact N 1100±150
27 Contact bouncing duration at closing operation ms ≤2
28 Closing and opening non-simultaneity of three-phase contacts ms ≤2
29 Rebound amplitude of opening contact mm ≤1
30 Note:★Rated characteristics to be given on request

Related case

20150626044848.pdf
版权所有   ©2014浙江紫光电器有限公司    浙ICP备05004371号    技术支持:鸿睿思博