outdoor circuit breaker
outdoor circuit breaker
ZW32-12/24 outdoor high-voltage AC vacuum circuit breaker is an outdoor high-voltage switching device with a rated voltage of 12/24kV and three-phase AC 50Hz. It is mainly used to break and close the load current and short-circuit current of the power system. It is suitable for 10/20kV distribution gates in substations and power systems. It is especially suitable for use in seriously polluted environments and places with frequent operations.
Product overview
ZW32-12/24 outdoor high-voltage AC vacuum circuit breaker is an outdoor high-voltage switching device with a rated voltage of 12/24kV and three-phase AC 50Hz. It is mainly used for breaking and closing the load current and short circuit of the power system. current. It is suitable for 10/20kV distribution gates in substations and power systems. It is especially suitable for use in seriously polluted environments and places with frequent operations.
Technical Parameters
| Item | Unit | Parameters | |
| Rated voltage | kV | 12 | 24 |
| 1min power frequency Withstand voltage (phase to phase, ground/fracture) | kV | 42/48 | 65/79 |
| Lightning impulse resistance Voltage (phase to phase, ground/break) | kV | 75/85 | 65/79 |
| Rated current | A | 630, 1250 | 1250 |
| Rated frequency | Hz | 50 | 50 |
| Rated short-circuit breaking current | kA | 20, 25 | 25 |
| Rated short-circuit closing current (peak) | kA | 50, 63 | 63 |
| Rated peak withstand current | kA | 50, 63 | 63 |
| Rated short-time withstand current | kA | 20, 25 | 25 |
| Rated short-term withstand time | s | 4 | 4 |
| Rated operating cycle | O-0.3s-CO-180s-CO | O-0.3s-CO-180s-CO | |
| Rated short-circuit current breaking times | times | 30 | 30 |
| Mechanical life | times | 10000 | 10000 |
| Rated operating voltage of auxiliary circuit | V | DC24 | DC24 |
Note: When the altitude of the place where the product is used is higher than 2000m, the insulation withstand voltage should be corrected accordingly.
Features
The product adopts a three-pillar structure. The vacuum arc extinguishing chamber is connected to the operating mechanism through an insulating tie rod. The performance is stable and reliable.
The pole is cast using epoxy resin and silicone rubber APG process, which has good anti-condensation performance and mechanical strength.
It adopts high-performance spring operating mechanism with long mechanical life and has both electric and manual energy storage and opening and closing operation functions.
The main body chassis is made of 3mm thick high-quality stainless steel plate with high strength. Strong corrosion resistance
It has the advantages of miniaturization, novel appearance, light weight and easy installation.
Can be equipped with current transformers of various variable ratios for metering or measurement and protection
Can be equipped with control terminal interface for power distribution automation
Product usage environment
Ambient air temperature: -40℃~+70℃
Altitude: Not exceeding 2000m
Installation location: A place free of flammable, explosive, chemically corrosive substances and frequent severe vibration
Safety pollution level: Level IV
Wind pressure: not exceeding 700Pa (equivalent to wind speed 35m/s)
Note: When the above usage environment conditions are exceeded, please contact us
