| Voltage range | 22-27kV |
24kv Outdoor Pole Mounted Vacuum Circuit Breaker VCB
The AB-3S-24 series outdoor vacuum circuit breakers are recently-developed pole-mounted intelligent vacuum circuit reclosers of a new generation, which absorb the advanced domestic and foreign technologies adopted by our company. It is intelligent, energy-saving, environemntally-friendly and maintenance-free.This product integrates such functions as control, protection, measurement, fault positioning, ontoring and synchronous closing. With full functions and high digitalized and intelligent degree, it is a best choice for power distribution equipment network automation and intellectualization process.This product conforms to IEC60044-1, IEC60060, IEC60068-2, IEC60099-4, IEC60255-27, IEC60270, IEC60280.1, IEC60529, IEC60694, IEC60815-1, IEC60870-5-101, IEC61000-4, IEC61243-5, IEC62271, standards, etc.
Major Technical Parameters are shown below:
| Rated voltage | 24kV |
| Rated current | 630/1,250A |
| Rated frequency | 50/60 Hz |
| Rated short-duration (1 min) power frequency withstand voltage | 65/79 kV |
| Rated short-circuit breaking current | 25/31.5 kA |
| Rated short-duration withstand current (4s) | 25/31.5 kA |
| Rated lightning impluse withstand voltage(to earth/break) | 125/145 kV |
| Rated short-circuit making current (peak value) | 63/80 kA |
| Rated peak withstand current | 63/80 kA |
| Rated short-circuit current breaking times | 30 times |
| Mechanical service life of vacuum circuit breaker | 20,000 times |
| CT transformation ratio | 600/1 or 1,250/1 |
| Rated operating sequence of circuit breaker | O-3s-CO-180s-CO-Lockout * |
| Total weight | 200+25 kg |
* - time can be adjustable.Using Environment:
| Description | Unit | Using Environment Value | |
| Surrounding Air | Max Temperature | ºC | +75 |
| Min Temperature | -50 | ||
| Max Daily Temperature Difference | K | 30 | |
| Altitude | m | ≤3,000 | |
| Solar Radiation Intensity | W/cm2 | 0.1 | |
| Pullution Class | IV | ||
| Icing-Thickness | mm | 10 | |
| Humidity | Average Value of Daily Relative Humidity | % | ≤100 |
| Average Value of Monthly Relative Humidity | ≤95 | ||
| Earthquake Torelance Ability | Degree | ≤8 | |
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