ZW8-12/630-20 Indoor High Voltage Vacuum Circuit Breaker
Technical specification
|
Rated voltage |
12kV |
|
Rated current |
630A |
|
Power frequency withstand voltage |
42kV/48kV |
|
Lightning impulse withstand voltage(peak) |
75kV/85kV |
|
Rated short circuit breaking current |
20kA |
|
Rated short circuit making current(peak value) |
50kA |
|
Rated sequence of operations |
O-0.3s-CO-180s-CO |
|
Rated short-circuit current breaking times |
30 |
|
Mechanical life |
10000 |
|
Rated operating voltage(close/brake coil) |
DC220V AC220V |
|
Wear thickness between dynamic and static contactor |
3mm |
|
Isolating fracture break distance |
>200mm |
Product Model
Dimension
Product Functions
◆Comprehensive Current Switching: Safely breaks and closes load currents, overload currents, and short-circuit currents in 10-12kV distribution systems.
◆High-Frequency Short-Circuit Breaking: Capable of multiple short-circuit breaking operations with excellent arc quenching performance.
◆Urban & Rural Grid Protection: Ideal for 10kV urban network load switching and rural power system branch control.
◆Non-Oil Replacement Solution: Serves as an environmentally friendly alternative to oil circuit breakers in grid modernization projects.
◆Harsh Environment Operation: Engineered for reliable performance in challenging weather and polluted environments.
Applicable Environment
◇Rated System: Suitable for 12kV, 50Hz three-phase AC outdoor power systems.
◇Installation Type: Designed for outdoor pole-mounted or ground-level installation.
◇Weather Resistance: Silicone rubber outer insulation adapts to harsh weather conditions and polluted environments.
◇Application Scope: Ideal for urban distribution networks, rural power systems, and small grid installations.
Product Highlights
◆Advanced Vacuum Interrupter: Features a ceramic shell with cup-type longitudinal magnetic field electrodes and copper-chromium contacts for superior short-circuit breaking and closing performance.
◆All-Weather Outdoor Design: Silicone rubber outer insulation provides excellent tracking resistance and weatherproofing, adapting to pollution, rain, and extreme temperatures.
◆Compact & Lightweight: Small footprint and light weight with attractive appearance enable easy pole or substation installation, reducing costs.
◆Reliable Spring Mechanism: Electric spring operating mechanism positioned on the box side provides consistent performance with easy operation and maintenance access.
◆Three-Phase Common Tank: Robust common tank design with dry air insulation ensures phase consistency and protection against environmental contaminants.