Category
40.5kV MV. Vacuum Circuit Breaker/Mounted Permanent Magnet Embedded Type (ZW32)
EXZW32-40.5M
ZW32-40.5M type outdoor pole-mounted reliable permanent magnet embedded type vcb (vacuum circuit breaker) adopts a unique permanent magnet mechanism, manual closing mechanism, and high reliable intelligent controller. This equipment mainly applies to medium voltage overhead line power grid. It is used for opening and closing load current, overload current, and short circuit current, with 0~3 times automatic reclosing.
Quantity:
1. General description
EXZW32-40.5M type outdoor pole-mounted reliable permanent magnet embedded type vcb (vacuum circuit breaker) adopts special design permanent magnet mechanism, manual closing mechanism and high reliable intelligent controller. This equipment mainly apply to medium voltage overhead line power grid. It is used for opening and closing load current, over load current and short circuit current, with 0~3 times automatic reclosing.
2. Using condition
circuit breaker main technical parameter
circuit breaker main mechanical parameter
EXZW32-40.5M type outdoor pole-mounted reliable permanent magnet embedded type vcb (vacuum circuit breaker) adopts special design permanent magnet mechanism, manual closing mechanism and high reliable intelligent controller. This equipment mainly apply to medium voltage overhead line power grid. It is used for opening and closing load current, over load current and short circuit current, with 0~3 times automatic reclosing.
High reliability
- Maintenance free in entire service life
- High mechanical life and electric life
- The complete appliance has small volume, light weight, and easy for installation
- Has standard relay protection and fast automatic relcosing function.
2. Using condition
- Ambient air temperature:：-30℃～+60℃；
- Altitude：≤ 2000m；
- Wind speed: ≤ 34m/s；
- The vibration from the switch equipment and the external of the control equipment or earthquake can be ignored.
- Pollution grade: IV class.
- Storage temperature: -40℃～+85℃。
circuit breaker main technical parameter
| Item | Unit | Data |
| Rated voltage | kV | 40.5 |
| Rated current | A | 1250/1600 |
| Rated frequency | Hz | 50 or 60 |
| Power frequency withstand voltage 1min（wet）（dry） | kV | 80/95 |
| Lightning impulse withstand voltage（peak voltage） | kV | 185 |
| Rated short circuit breaking current | kA | 31.5 |
| Rated short circuit making current（peak value） | kA | 80 |
| Rated peak withstand current | kA | 80 |
| 4S short time withstand current | kA | 31.5 |
| Rated operating sequence | O－0.1s－CO－3sCO-6sCO-60s recover | |
| Rated short circuit current breaking times | times | 30 |
| Mechanical life | times | 20000 |
| Permanent magnet mechanism control voltage | V | DC220 |
| Secondary circuit 1min power frequency voltage | KV | 2 |
circuit breaker main mechanical parameter
| Item | Unit | Data |
| Contact opening distance | mm | 16±1 |
| Contact over travel | mm | 4±0.5 |
| Opening speed | m/s | 1.4-1.8 |
| Closing speed | m/s | 0.4-0.8 |
| Contact closing bounce time | ms | ≤5 |
| Center distance between phase | mm | 560±2 |
| Triphase opening/closing asynchronous | ms | ≤2 |
| Each phase conductive circuit resistance | μΩ | ＜120 |
| Closing time | ms | 25～45 |
| Opening time | ms | 20～45 |
| Weight | Kg | 300 |
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