Outdoor Circuit Breakers
01
ZW32-24 Outdoor Vacuum Circuit Breaker
General
The ZW32-24 series of outdoor high voltage vacuum circuit breakers is designed for outdoor distribution equipment with a rated voltage of 24kV and three phase AC 50Hz. mostly used for short-circuit current, overload current, breaking, and closing power systems. Useful for protection and management of substations and power distribution in mining and industrial businesses, as well as a common operating location for rural power systems.
Service environment conditions
a) Ambient Air Temperature: +45ºC ~ -45ºC
b) Humidity: Monthly average humidity 95%; Daily average humidity 90% .
c) Altitude above sea level (Maximum installation altitude): not more than 2500 meters.
d) Ambient air should be not apparently polluted by corrosive and flammable gas, vapor etc.
e) The wind speed is not greater than 35m/s.
f ) Anti-contamination level for grade IV
g) The earthquake intensity does not exceed 8 degrees.
Overall dimension
Product Parameter
| No. | Item | Unit | Parameters |
| 1 | Rated voltage | KV | 24 |
| 2 | Rated frequency | HZ | 50/60 |
| 3 | Rated current | A | 630/1250 |
| 4 | Rated short-circuit breaking current | kA | 20/25 |
| 5 | Rated peak value withstand current(peak) | kA | 50/63 |
| 6 | Rated short time withstand current | kA | 20/25 |
| 7 | Rated short-circuit closing current (peak) | kA | 50/63 |
| 8 | Mechanical life | TIMES | 10000 |
| 9 | Rated short-circuit breaking current breaking number | TIMES | 30 |
| 10 | Power frequency withstand voltages (1 min), wet/dry: inter-phase, earth, fracture | KV | 65/79 |
| 11 | Lightning impulse withstand voltage (peak) inter-phase ,earth, fracture | KV | 125/145 |
| 12 | Rated operate sequence | O-0.3-CO-180S-CO | |
| 13 | Secondary circuit 1min power frequency voltages | KV | 2 |
Application
The circuit breaker has the features of small size, light weight, anti-condensation, maintenance and so on. Adapt to bad weather conditions and dirty environments.
