productslogo-2-25

VED-12KV

Vacuum Circuit Breaker

VED-12 series indoor high voltage vacuum circuit breaker is suitable for 12kV air-insulated indoor
switchgear, used as protection and control unit of power equipment of industrial & mining enterprise. Due
to the super excellence, it is especially suitable for locations where requires the frequent operation under
rated working current or multiple breaking under short circuit breaking current. The circuit breaker adopts
the integrated design of operating mechanism and circuit breaker body, servers as not only fixed
installation, but also draw-out type equipped with a special propelling mechanism.
VED-12 has two main types. One is Draw-out type. Model No. is VED-12D. The other is Fixed type. Model
No. is VED-12F.

888
No. Item Unit parameter
1 Rated voltage KV 12
2 Rated frequency Hz 50
3 Rated lightning impulse withstand voltage (1 min) KV 75
4 Rated short-time power frequency withstand voltage (1 min) KV 42
5 Rated short-circuit breaking current KA 20 25 21.5 40
6 Rated current A 630  1000

1250

630  1000

1250 1600

1250 1600 2000 2500 1600 2500 3150 4000
7 Rated peak withstand current KA 50 63 80 100
8 Rated shorted-time withstand current (4S) KA 20 25 31.5 40
9 Power frequency withstand voltage of secondary circuit (1min) V 2000
10 Rated operation sequence

O-0.3s-CO-180s-CO

O-180s-CO-180s-CO+

11 Rated breaking current of (single/back to back)capacitor bank A 630/400 800/400
12 Opening time(rated voltage) ms 20~50
13 Closing time(rated voltage) ms 30~70
14 Rated short-time current breaking times Times 50 30
15 Mechanical life Times 30000
16 Rated opening/closing voltage V AC110,220; DC110,220
17 Rated voltage of energy-storage motor V AC110,220; DC110,220
888-1