ZN63(VBM7)-12 Series Side Mounted Indoor High Voltage Vacuum Circuit Breaker
Technical specification
|
NO. |
Item |
Units |
Parameters |
|||
|
1 |
Rated voltage |
kV |
12 |
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|
2 |
Rated current |
A |
630-1250 |
1250 |
1250 |
|
|
3 |
Rated short-circuit breaking current |
kV |
20 |
25 |
31.5 |
|
|
4 |
Rated short-circuit closing current |
kV |
50 |
63 |
80 |
|
|
5 |
Rated peak withstand current |
kV |
50 |
63 |
80 |
|
|
6 |
4S rated short-circuit withstand current |
kV |
20 |
25 |
31.5 |
|
|
7 |
Rated Insulation level |
1min power frequency voltage |
kA |
42(fracture 48) |
||
|
Lightning Impulse Withstand voltage(peak) |
75(fracture 65) |
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|
8 |
Rated operating sequence |
|
O-0.3S-CO-180S-CO |
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|
9 |
Mechanism life |
Times |
10000 |
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|
10 |
Opening times of rated short-circuit breaking current |
Times |
50 |
|||
|
11 |
Rated operator closing voltage(DC) |
V |
AC/DC 220.110 |
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|
12 |
Rated operator opening voltage(DC) |
V |
AC/DC 220.110 |
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|
13 |
Clearance between open contact |
mm |
11±1 |
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|
14 |
Over-travel(Contact springcompression degree) |
mm |
3.5±0.5 |
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|
15 |
Three phase points,closing bounce time |
ms |
≤2 |
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|
16 |
Contact closing bounce time |
ms |
≤2 |
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|
17 |
Average opening speed |
m/s |
1.1±0.2 |
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|
18 |
Average closing speed |
m/s |
0.6±0.2 |
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|
19 |
Opening time |
The highest operating voltage |
s |
≤0.05 |
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|
The lowest operating voltage |
≤0.08 |
|||||
|
20 |
Closing time |
s |
0.1 |
|||
|
21 |
Dynamic and static contact allowed to wear a cumulative thickness |
mm |
3 |
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Product Model
Dimension
Product Functions
◆Circuit Protection & Control: Serves as a protection and control unit for transmission and distribution lines in medium voltage systems.
◆Frequent Operation Handling: Specifically designed for applications requiring frequent switching at rated operating currents.
◆Short-Circuit Breaking: Capable of multiple open short-circuit breaking operations with consistent performance.
◆Fixed Installation: Designed for permanent mounting in fixed switchgear and distribution systems.
◆Versatile System Integration: Can be used alone or integrated into ring network power supply, box-type variable systems, and non-standard power supply configurations.
Applicable Environment
◇Rated System: Suitable for 12kV, 50Hz three-phase AC indoor power systems.◇Temperature Range: Reliable operation in ambient temperatures from -15℃ to +40℃.
◇Installation Altitude: Designed for elevations up to 1000 meters.
◇Humidity Tolerance: Withstands daily average humidity ≤95% and monthly average ≤90%.
◇Seismic Resistance: Capable of withstanding earthquake intensity up to 8 degrees.
◇Air Quality: Suitable for locations free from corrosive gases, flammable vapors, and significant pollution.
Product Highlights
◆Vacuum Interruption Superiority: Delivers rapid arc extinction, minimal contact erosion, and long electrical life.◆Exceptional Switching Capability: Ideal for frequent operation at rated currents or multiple short-circuit breaking cycles, outperforming conventional technologies.
◆Fixed Installation Versatility: Designed for permanent mounting in fixed switchgear, yet flexible for ring networks, box substations, and non-standard systems.
◆Minimal Maintenance: Sealed-for-life vacuum interrupters eliminate contact replacement and arc quenching maintenance.
◆Multi-Application Adaptability: Works effectively as a standalone unit or integrated into complex distribution systems like ring main units and custom configurations.
◆Robust Environmental Performance: Engineered for reliable operation across wide temperature ranges and humid conditions, with seismic certification.