English
 |
ZW32-12F
Fenarro
| Quantity: | |
|---|---|
When a fault occurs in a T-branch line or user side of a 12kV distribution line, the feeder breaker in the substation may trip due to coordination limitations, causing unnecessary power outages in the entire line. By installing the ZW32-12F breaker at the T-connection point or user boundary, it can automatically detect and isolate faults (overcurrent, short circuit, single-phase grounding), ensuring continuous power supply to non-fault areas.
This breaker features fault detection, protection, control, and communication functions. It can automatically cut off single-phase grounding faults and isolate short-circuit faults. Its application in 12kV feeder overhead lines effectively avoids cascading outages, reduces the scope of power failure, shortens outage time, and ensures the safe operation of the main grid.
Installed at user boundary points of 12kV overhead distribution lines
Suitable for branch line connection points requiring sectional protection
Provides fault detection, isolation, and communication functions
Ideal for reducing power outage scope and improving grid reliability
Ambient temperature: -40℃ ~ +40℃
Relative humidity: daily average ≤ 95%，monthly average ≤ 90%
Altitude: ≤ 2000m
Wind pressure: ≤ 700Pa (equivalent to wind speed 34m/s)
Seismic intensity: ≤ 8 degrees
Free from fire, explosion, severe pollution, chemical corrosion, and violent vibration
Special requirements can be customized upon request
Equipped with vacuum interrupters, ensuring reliable breaking, safety, no fire or explosion risks, compact design, lightweight, and long service life.
Sealed structure improves moisture resistance and anti-condensation performance.
Optional 2-phase or 3-phase CTs for output currents, supporting sectional protection and intelligent controller analysis.
Manual, electric, or remote operation supported for closing and opening.
Operating mechanism is fully sealed inside the switch box, preventing corrosion in outdoor environments.
Novel, simple, and reliable mechanism design with mechanical life up to 10,000 operations.
| Serial No. | Item | Unit | Numerical Value |
|---|---|---|---|
| 1 | Contact Opening Distance | mm | 9±1 |
| 2 | Contact Travel | mm | 2.5±1 |
| 3 | Opening Speed | m/s | 1.1±0.3 |
| 4 | Closing Speed | m/s | 0.6±0.2 |
| 5 | Contact Opening Rebound Time | ms | ≤2 |
| 6 | Distance Between Phase Centers | mm | 340±2 |
| 7 | Asynchronism of Three - phase Opening and Closing | ms | ≤2 |
| 8 | Loop Resistance of Each Phase Conductor | μΩ | < 80 (with isolating knife 200) |
| 9 | Weight | kg | Approximately 70 |
| Serial No. | Item | Unit | Numerical Value | ||
|---|---|---|---|---|---|
| 1 | Rated Voltage | kV | 12 | ||
| 2 | Rated Current | A | 630, 1250 | ||
| 3 | Rated Frequency | Hz | 50 | ||
| 4 | Power Frequency Withstand Voltage (1min) | Dry - type (Phase - to - phase, Phase - to - ground / Across Contacts) | kV | 42/48 | |
| Wet - type (Phase - to - ground, External Insulation) | kV | 34 | |||
| 5 | Lightning Impulse Withstand Current (Peak Value) (Phase - to - phase, Phase - to - ground / Across Contacts) | kV | 75/85 | ||
| 6 | Rated Short - circuit Breaking Current | kA | 20 | 25 | |
| 7 | Rated Short - circuit Making Current (Peak Value) | kA | 50 | 63 | |
| 8 | Rated Peak Withstand Current | kA | 50 | 63 | |
| 9 | 4s Short - time Withstand Current | kA | 20 | 25 | |
| 10 | Rated Operating Cycle | Open - 0.3s Close & Separate - 180s Close & Open | |||
| 11 | Number of Rated Short - circuit Current Breaking Operations | times | 30 | ||
| 12 | Mechanical Life | times | 10000 | ||
| 13 | Power Frequency Withstand Voltage of Secondary Circuit (1min) | kV | 2 | ||
When a fault occurs in a T-branch line or user side of a 12kV distribution line, the feeder breaker in the substation may trip due to coordination limitations, causing unnecessary power outages in the entire line. By installing the ZW32-12F breaker at the T-connection point or user boundary, it can automatically detect and isolate faults (overcurrent, short circuit, single-phase grounding), ensuring continuous power supply to non-fault areas.
This breaker features fault detection, protection, control, and communication functions. It can automatically cut off single-phase grounding faults and isolate short-circuit faults. Its application in 12kV feeder overhead lines effectively avoids cascading outages, reduces the scope of power failure, shortens outage time, and ensures the safe operation of the main grid.
Installed at user boundary points of 12kV overhead distribution lines
Suitable for branch line connection points requiring sectional protection
Provides fault detection, isolation, and communication functions
Ideal for reducing power outage scope and improving grid reliability
Ambient temperature: -40℃ ~ +40℃
Relative humidity: daily average ≤ 95%，monthly average ≤ 90%
Altitude: ≤ 2000m
Wind pressure: ≤ 700Pa (equivalent to wind speed 34m/s)
Seismic intensity: ≤ 8 degrees
Free from fire, explosion, severe pollution, chemical corrosion, and violent vibration
Special requirements can be customized upon request
Equipped with vacuum interrupters, ensuring reliable breaking, safety, no fire or explosion risks, compact design, lightweight, and long service life.
Sealed structure improves moisture resistance and anti-condensation performance.
Optional 2-phase or 3-phase CTs for output currents, supporting sectional protection and intelligent controller analysis.
Manual, electric, or remote operation supported for closing and opening.
Operating mechanism is fully sealed inside the switch box, preventing corrosion in outdoor environments.
Novel, simple, and reliable mechanism design with mechanical life up to 10,000 operations.
| Serial No. | Item | Unit | Numerical Value |
|---|---|---|---|
| 1 | Contact Opening Distance | mm | 9±1 |
| 2 | Contact Travel | mm | 2.5±1 |
| 3 | Opening Speed | m/s | 1.1±0.3 |
| 4 | Closing Speed | m/s | 0.6±0.2 |
| 5 | Contact Opening Rebound Time | ms | ≤2 |
| 6 | Distance Between Phase Centers | mm | 340±2 |
| 7 | Asynchronism of Three - phase Opening and Closing | ms | ≤2 |
| 8 | Loop Resistance of Each Phase Conductor | μΩ | < 80 (with isolating knife 200) |
| 9 | Weight | kg | Approximately 70 |
| Serial No. | Item | Unit | Numerical Value | ||
|---|---|---|---|---|---|
| 1 | Rated Voltage | kV | 12 | ||
| 2 | Rated Current | A | 630, 1250 | ||
| 3 | Rated Frequency | Hz | 50 | ||
| 4 | Power Frequency Withstand Voltage (1min) | Dry - type (Phase - to - phase, Phase - to - ground / Across Contacts) | kV | 42/48 | |
| Wet - type (Phase - to - ground, External Insulation) | kV | 34 | |||
| 5 | Lightning Impulse Withstand Current (Peak Value) (Phase - to - phase, Phase - to - ground / Across Contacts) | kV | 75/85 | ||
| 6 | Rated Short - circuit Breaking Current | kA | 20 | 25 | |
| 7 | Rated Short - circuit Making Current (Peak Value) | kA | 50 | 63 | |
| 8 | Rated Peak Withstand Current | kA | 50 | 63 | |
| 9 | 4s Short - time Withstand Current | kA | 20 | 25 | |
| 10 | Rated Operating Cycle | Open - 0.3s Close & Separate - 180s Close & Open | |||
| 11 | Number of Rated Short - circuit Current Breaking Operations | times | 30 | ||
| 12 | Mechanical Life | times | 10000 | ||
| 13 | Power Frequency Withstand Voltage of Secondary Circuit (1min) | kV | 2 | ||
