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We are the supplier and exporter of low & medium voltage electric equipements: Electric Connectors, Industrial Plugs, XAC Pendent Pushbutton Switches, APP SB Power Connectors ,Contacts,Split Core Transformer, Clamp Transformer, Distribution box, LED Lampes. And crane parts: Electirc Hoist, Terminal Blocks, COB,XAC Pendant Control Stations, Crane Overload Detector, Cut off limit..

VT12(ZN85) 40.5 Indoor AC HV Vacuum Circuit Breaker

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