VT12(ZN85)-40.5 Indoor AC HV Vacuum Circuit Breaker
VT12(ZN85)-40.5 Indoor AC HV Vacuum Circuit Breaker is mainly suitable for the power system with three-phase AC 50HZ,40.5KV rated voltage£¬to make load current, overload current and short circuit current. It is used for the places with different load and frequent operation. And it is applied to protecting and controlling the apparatus in the industrial and mining business, power plant and substations.
Product features of Indoor AC High Voltage Vacuum Circuit Breaker
a.The advanced and effective extinction arc principle is adopted for its high breaking capability and longer service life.
b.Reasonable arrangement of inductive circuit and operating mechanism, module design, makes its structure more compact.
c.Reliable interlocking can protect from varieties of malfunction. The insulation level is increased sharply due to applying to compound insulation, and it is never influenced by environment.
Type and designation:
Technical parameter:
|
No.
|
Item
|
Unit
|
Data
|
|
1.
|
Rated voltage
|
kV
|
40.5
|
|
2.
|
Rated current
|
A
|
1250
|
1600
|
|
3.
|
Rated insulation level
|
1min power frequency withstand voltage
|
kV
|
95
|
|
Lightning impulse withstand voltage(peak)
|
185
|
|
4.
|
Rated frequency
|
Hz
|
50
|
|
5.
|
Rated short-time withstand current
|
kA
|
25, 31.5, 40
|
|
6.
|
Rated peak withstand current
|
63, 80, 100
|
|
7.
|
Rated short circuit lasting time
|
s
|
4
|
|
8.
|
Rated short circuit breaking current
|
kA
|
25, 31.5, 40
|
|
9.
|
Rated short circuit making current
|
63, 80, 100
|
|
10.
|
Rated operating order
|
|
C-0.3s-CO-180s-CO
|
|
11.
|
Breaking time
|
ms
|
<=80
|
|
12.
|
Rated short circuit breaking current breaking times
|
Time
|
30
|
|
13.
|
Rated capcitor bank breaking current
|
A
|
630
|
|
14.
|
Rated operating voltage
|
V
|
-110
|
-220/to 220
|
|
15.
|
Mechanical endurance
|
time
|
10000
|
|
16.
|
Contact travel
|
mm
|
20 (+or-) 2
|
|
17.
|
Over travel
|
mm
|
6 (+or-) 1
|
|
18.
|
Average closing speed
|
m/s
|
0.6 to 0.9
|
|
19.
|
Average opening speed (moving 10mm)
|
m/s
|
1.5 to 1.9
|
|
20.
|
Closing time
|
ms
|
40 to 80
|
|
21.
|
Opening time
|
ms
|
35 to 60
|
|
22.
|
Contact closing bouncing time
|
ms
|
<=2
|
|
23.
|
Three phase closing asychronization
|
ms
|
<=2
|
|
24.
|
Three phase opening asychronization
|
ms
|
<=2
|
|
25.
|
Closing spring stored energy time (electric machine)
|
s
|
<=12
|
|
26.
|
Resistance of each phase circuit
(excluding contact arm )
|
¦Ì¦¸
|
<=60
|
Your cart is empty
