TheFZW28-12 Outdoor Vacuum Circuit Breakeris a high-performanceswitchgearsolution designed for medium-voltage outdoor applications. Engineered to withstand harsh environments and frequent operation, thisvacuum circuit breakerprovides exceptional performance in breaking and closing load currents, overload currents, and short-circuit currents. It is widely used in electrical utilities and industries such as metallurgy, mining, petrochemicals, telecommunications, and renewable energy.
Designed for three-phase AC 50Hz systems with a rated voltage of 12kV, the FZW28-12Breakercomplies with national and international standards, includingGB1984-2014,GB3309-1989, andGB/T11022-1999. It is ideal for use in outdoor substations, pole-mounted systems, and distributed power generation networks requiring high safety, mechanical endurance, and insulation performance.
Key Features of FZW28-12 Outdoor Vacuum Circuit Breaker
- Modular Spring Operating Mechanism: Ensures flexible operation and stable performance in various environments.
- Compact Design: Miniaturized structure with optimized internal layout improves installation and transportation efficiency.
- Reinforced Structure: High-strength column bracket improves mechanical stability and earthquake resistance.
- Porcelain Bushing with Long Creepage Distance: Enhances insulation performance and anti-fouling capacity in outdoor conditions.
- High Mechanical and Electrical Life: Designed for up to 10,000 mechanical operations and 20 full short-circuit interruptions.
Applications
TheFZW28-12 Vacuum Circuit Breakeris commonly used in the following scenarios:
- Power grid feeder lines and distribution networks
- Outdoor substations in rural or industrial areas
- Renewable energy systems (e.g., wind and solar farms)
- Utilities requiring automated fault isolation and remote control
- Environments with high seismic activity or pollution levels
Technical Parameters of FZW28-12 Vacuum Circuit Breaker
| No. | Parameter | Unit | Value |
|---|---|---|---|
| 1 | Rated Voltage | kV | 12 |
| 2 | Rated Frequency | Hz | 50 |
| 3 | Rated Current | A | 630, 1250 |
| 4 | Rated Short-Circuit Breaking Current | kA | 20, 25, 31.5 |
| 5 | Rated Short-Circuit Making Current | kA | 50, 63, 80 |
| 6 | Rated Peak Withstand Current | kA | 50, 63, 80 |
| 7 | Corriente de resistencia a corto plazo | kA | 20, 25, 31.5 |
| 8 | Duración de cortocircuito con calificación | s | 4 |
| 9 | Secuencia de operación | - | O-0.3S-Co-180S-Co |
| 10 | Corriente heterogénea de fallas a tierra rompiendo | ka | 21.93, 27.6 |
| 11 | Voltaje de resistencia de frecuencia de potencia de 1min (seco/húmedo) | KV | 95 /85 |
| 12 | Voltaje de soporte de impulso de rayo (pico) | KV | 185 |
| 13 | Tiempo de apertura/cierre | EM | ≤100 |
| 14 | Vida mecánica | veces | 10,000 |
| 15 | Operaciones de ruptura de cortocircuito con calificación | veces | 20 |
Cumplimiento y estándares
El FZW28-12 cumple con los siguientes estándares clave:
- GB1984-2014- interruptor de circuito de alto voltaje de CA
- GB3309-1989- Prueba mecánica de la tabla de interruptores de alto voltaje
- GB/T11022-1999- Requisitos técnicos comunes para la tabla de interruptores de alto voltaje y el control de control
ElInterruptor de circuito de vacío al aire libre FZW28-12es una solución de conmutación de voltaje medio robusta y eficiente adaptada para sistemas de alto voltaje al aire libre. interruptor de vacíoOfrece un rendimiento óptimo, estabilidad a largo plazo y seguridad en todos los entornos.
