ZW32-24 outdoor HV vacuum circuit breaker is a 3-phase AC 50Hz 24kV outdoor switch equipment
♦ Installation way: pole mounted;
♦ Operating mechanism: spring operating mechanism and permanent magnetic operating mechanism;
♦ Pole type: integrated pole;
♦ Application: outdoor 24kV substation, power plant.
♦ Operation type, manual, electric, remote control.
Product Standards
♦ IEC62271-100 High Voltage Switchgear and Controlgear Part 100: AC Circuit-breakers
♦ GB1984 High Voltage AC Circuit-breakers
♦ GB/T11022 Common Specifications for High-voltage Switchgear and Controlgear
Standards
♦ JB/T 3855 High Voltage AC Vacuum Circuit-breakers
♦ DL/T402 Specification of High-voltage AC Circuit-breakers
Environmental Conditions
♦ Ambient temperature: -35°C~+40°C;
♦ Altitude:
♦ Wind speed
♦ Earthquake intensity:
♦ Filthy level: IV;
♦ Installation places: No fire, explosion hazard or serious filthy.
Main Technical Parameters
| No | Item | Unit | Value |
| 1 | Rated voltage | kV | twenty four |
| 2 | Rated current | A | 630/1250 |
| 3 | Rated frequency | Hz | 50 |
| 4 | Rated thermal current | kA | 20/25 |
| 5 | Rated short circuit breaking current | kA | 20/25 |
| 6 | Rated dynamic current (peak) | kA | 50/63 |
| 7 | Rated short-circuit closing current (peak) | kA | 50/63 |
| 8 | Thermal stability time | s | 4 |
| 9 | Rated operating sequence | Times | O-0.3S-CO-1 80S-CO |
| 10 | 1 min power frequency withstand voltage (inter-phase, earth/fracture) | kV | 65 |
| Lightning impulse withstand voltage (peak) (inter-phase, earth/fracture) | 125 | ||
| Secondary circuit 1min power frequency withstand voltage | 2 |
| No | Item | Unit | Value |
| 11 | Mechanical life | Times | 10000 |
| 12 | Rated short-circuit breaking current breaking times | Times | 30 |
| 13 | Rated circuit breaking times | Times | 10000 |
| 14 | Contact distance | mm | 12±1 |
| 15 | Over travel | mm | 3±1 |
| 16 | Inter-phase center distance | mm | 380±1.5 |
| 17 | Three phase closing and opening asynchronism | ms | ≤2 |
| 18 | Contact closing bounce duration | ms | ≤2 |
| 19 | Closing time | ms | 25~80 |
| 20 | Opening time | ms | 23~50 |
| twenty one | Average opening speed | m/s | 1.1-1.7 |
| twenty two | Average closing speed | m/s | 0.5-0.9 |
| twenty three | Main conductive circuit resistance | mΩ | ≤80 |
General Structure Drawing and Installation Size (unit: mm)
1. Upper outgoing line terminal 2. Interrupter 3. Insulating tube 4. Lower outgoing line terminal
5. Conductive clip 6. Flexible connection 7. Insulating lever 8. Contact pressure spring
9. Opening spring 10. Drive 11. Mechanism outgoing shaft 12. Operating mechanism
13. Mechanism box 14. Current transformer link board
1. Operating handle 2. Disconnect main shaft 3. Circuit breaker manual opening/closing handle
4. Energy storage handle 5. Opening/closing indication 6. Wiring plug 7. Current transformer
8. Insulator 9. Insulating frame 10. Insulating lever 11. Incoming line terminal
12. Disconnect blade 13. Outgoing line terminal 14. Circuit breaker
Installation ways (single pole/double pole)
