ZW32-12MA/630 Permanent Magnetic Outdoor Vacuum Circuit Breaker
Technical specification
|
Item |
Units |
Parameters |
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|
Rated voltage |
KV |
12 |
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|
Rated insulation level |
1min power frequency withstand voltage |
Dry |
KV |
To earth, phase to phase 42 Fracture 48 |
|
Wet |
External insulation 34 |
|||
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Lightning impulse withstand voltage (peak) |
|
To earth, phase to phase 75 Fracture 85 |
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Rated frequency |
Hz |
50 |
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Rated current |
A |
630 |
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Rated short-circuit breaking current |
KA |
12.5/16/20 |
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Rated short-circuit closed current(peak) |
KA |
31.5/40/50 |
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Rated peak withstand current |
KA |
31.5/40/50 |
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|
Rated short-time withstand current(4(s) |
KA |
20 |
||
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Rated operating sequence |
|
O-0.3s-CO-180s-CO |
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switchon/opening time |
ms |
25-50/15-50 |
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Rated short-circuit breaking current breaking times |
Times |
30 |
||
|
Mechanism life |
Times |
10000 |
||
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The control circuit and auxillary circuit 1 min power frequency withstand voltage |
v |
2000 |
||
|
Rated operating voitage and auxiliary circuit rated voltage |
v |
DC220/AC220 |
||
|
Over-current tripper |
Rated current |
a |
5 |
|
|
Tripping current precision |
% |
±10 |
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Product Model
Dimension
Product Functions
◆Comprehensive Current Switching: Safely breaks and closes load currents, overload currents, and short-circuit currents in 12kV power systems.
◆Permanent Magnet Operation: Utilizes a permanent magnet mechanism with magnetic holding for the closing position, eliminating complex mechanical latches.
◆Substation & Industrial Protection: Provides reliable protection and control for power distribution systems in substations and industrial facilities.
◆Rural Grid Application: Suitable for locations requiring frequent operation.
◆Fault Current Interruption: Capable of interrupting short-circuit currents to protect downstream equipment and ensure system stability.
Applicable Environment
◇Rated System: Suitable for 12kV, 50Hz three-phase AC outdoor power systems.
◇Extreme Low Temperature: Reliable operation in ambient temperatures from -45℃ to +40℃, ideal for cold climates.
◇High-Altitude Capability: Designed for elevations up to 3000 meters (higher altitudes available upon request).
◇Wind Resistance: Engineered to withstand wind speeds up to 34m/s.
◇Pollution Level: Suitable for air pollution levels up to class IV.
Product Highlights
◆Advanced Permanent Magnet Mechanism: Uses permanent magnets for closed-position holding, eliminating mechanical latches, reducing parts, and dramatically improving reliability.
◆Extended Mechanical Life: Fewer parts and a shortened transmission chain greatly enhance mechanical life, ideal for frequent operation.
◆Extreme Cold & High-Altitude Capability: Engineered for reliable operation at -45℃ and up to 3000m, perfect for plateaus, mountains, and severe winters.
◆True Maintenance-Free Operation: Compact, lightweight, anti-condensation design ensures long-term durability in class IV pollution environments without regular maintenance.
◆Proven Breaking Performance: Reliable vacuum arc-extinguishing technology cleanly interrupts load, overload, and short-circuit currents for long electrical life.
◆Versatile Application Range: Suitable for substation protection, industrial distribution, and rural grids requiring high reliability in demanding conditions.