VYD (ZN) within 85-40.5 (3AV3) type indoor AC high voltage vacuum circuit breaker (hereinafter referred to as "circuit breakers") for AC 50Hz.35kV power system, available for industrial and mining enterprises, power plants and substations for protection and control the equipment and applications suitable for frequent operation.
The product performance in line with international standards GB1984 "AC high voltage circuit breakers" and JB3855 "within the 3.6-40.5kV indoor AC high voltage vacuum circuit breakers" and other standards.
VYD (ZN) 85-40.5 vacuum circuit breaker main technical parameters
|
No.
|
Name
|
Unit
|
Data
|
|
1
|
Rated voltage
|
kV
|
40.5
|
|
2
|
Rated insulation level
|
1min Working withstand voltage (rms)
|
kV
|
95
|
|
Lightning impulse withstand voltage (peak)
|
kV
|
185
|
|
3
|
Rated frequency
|
Hz
|
50
|
|
4
|
Rated Current
|
A
|
630 1250 1600 2000
|
|
5
|
Rated short time withstand current
|
kA
|
20 25 31.5
|
|
6
|
Rated peak withstand current
|
Ka
|
50 63 80
|
|
7
|
Rated short-circuit breaking current
|
kA
|
20 25 31.5
|
|
8
|
Rated short-circuit current (peak)
|
kA
|
50 63 80
|
|
9
|
Rated operating sequence
|
|
0-0.3s-C0-180s-C0
|
|
10
|
Rated short duration
|
s
|
4
|
|
11
|
Breaking time
|
ms
|
＜80
|
|
12
|
Rated capacitor bank breaking current
|
A
|
630
|
|
13
|
Rated short-circuit breaking current breaking times
|
Secondary
|
20
|
|
14
|
Mechanical life
|
Secondary
|
10000
|
|
15
|
Rated operating voltage
|
V
|
100/～110,220/～220
|
|
16
|
Dimensions (L × H × W)
|
mm
|
1246×1700×905
|
|
17
|
Weight
|
kg
|
466
|
Breaker assembly of mechanical properties after adjusting the technical parameters
|
No.
|
Name
|
Unit
|
Data
|
|
1
|
Contact opening distance
|
mm
|
22±2
|
|
2
|
The contact line of stroke (relative position measuring contact spring division)
|
mm
|
7.5±1.5
|
|
3
|
Average closing speed
|
m/s
|
0.65±0.15
|
|
4
|
Average opening speed (sport 10mm)
|
m/s
|
1.8±0.12
|
|
5
|
Closing time
|
ms
|
50～100
|
|
6
|
Opening time
|
ms
|
35～60
|
|
7
|
Contact closing bounce time
|
ms
|
≤3
|
|
8
|
Different stage of the three-phase contact closing
|
ms
|
≤2
|
|
9
|
Three-phase contact points floodgate
|
ms
|
≤2
|
|
10
|
Closing spring time
|
s
|
≤10
|
|
11
|
Each phase conductive loop resistance
|
μΩ
|
≤80
|
|
12
|
White center distance
|
mm
|
300±2
|
Ambient air temperature: no more than 40 ℃; daily average temperature does not exceed 35 ℃; minimum ambient air temperature is -25 ℃.
Relative humidity: daily average of not more than 95%, on average less than 90%; daily average vapor pressure not 2.2kPa; on average less than 1.8 kPa;
Altitude: not exceed 1000m;
Not significantly influenced by the surrounding dust, smoke, corrosive and / or flammable gases, vapors or contaminated salt spray;
Vibration or earth from the switch external devices and control equipment is negligible;
Electromagnetic interference induced in the secondary system, the amplitude does not exceed 1.6kV.
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