product description
The ZW32-40.5 series outdoor miniaturized vacuum circuit breaker is mainly composed of integrated solid-sealed poles, current transformers, operating mechanisms, and boxes. An isolation switch can be installed. This model of circuit breaker is miniaturized in design, and its casing is made of a high-quality steel box. Current transformers can be selected according to user needs.
This device is mainly used in medium-voltage overhead line power grids to divide and combine load current, overload current, and short-circuit current.
normal usage conditions
● Ambient temperature: not higher than +40℃, not lower than -15℃; relative air humidity: daily average value is not greater than 95%, monthly average value is not greater than 90%;
●The altitude does not exceed 1500 meters; The earthquake intensity does not exceed level 8;
●No place with fire, explosion, serious pollution, chemical corrosion and severe vibration. Note: If customers have other special requirements, they can put them forward when ordering, and our company will provide maximum satisfaction.
Model meaning
Main technical parameters
| project | unit | parameter | |
|---|---|---|---|
| Rated voltage | kV | 40.5(35) | |
| Rated current | A | 630/1250 | |
| Rated frequency | Hz | 50 or 60 | |
| The industrial frequency resistance is 1min (wet) (dry) (dry), the opposite/fracture | kV | 81 | |
| Lightning impact tolerance current (peak) phase, opposite/fracture | kV | 185 | |
| The rated short -circuit open current | kA | 20/25/31.5 | |
| The rated short -circuit level -off current (peak value) | kA | 63/80 | |
| The rated peak tolerance current | kA | 63/80 | |
| 4S short -term tolerance current | kA | 25/31.5 | |
| Rating operation cycle | NaN | Society -0.1S-Section-3S-Points-6S Points-60S recovery | |
| The number of short -circuit currents at the rated short circuit | Second-rate | 30 | |
| Mechanical life | Second-rate | 10000 | |
| Institutional control voltage | V | AC/DC220 | |
| Two circuit LMIN industrial frequency resistance | kV | 2 | |
| Touches | mm | 18±1 | |
| Ultra -stroke | mm | 4±0.5 | |
| Splitting speed | m/s | 1.4-1.8 | |
| Closing speed | m/s | 0.4-0.8 | |
| Jumping time | ms | ≤5 | |
| Central distance | mm | 560±2 | |
| What periods are different in three phases | ms | ≤2 | |
| Direction circuit resistance of each phase | μΩ | < 80 | |
| Time | ms | ≤100 | |
| Splitting time | ms | ≤50 | |
| weight | KG | No isolation 300 | Isolation 380 |
Overall dimensions
