Outdoor high-voltage vacuum circuit breaker are suitable for 35kV three-phase alternating current 50 Hz (60 Hz) power systems, used to switch load current, overload current and short-circuit current.
In vacuum circuit breaker, the vacuum is used as the arc quenching medium. The technology is suitable for mainly medium voltage application, rated operation voltage from 10KV-40.5KV.
- Installation way: foundation installation;
- Operating mechanism: spring operating mechanism and electromagnetic operating mechanism;
- Pole material: rubber silicone, ceramic;
- Application: outdoor 10-40.5kV substation, power plant.
- Current transformer: internal installation/ external installation.
Environmental Conditions
- Ambient temperature: -40℃~+40℃;
- Altitude: ≤1000m;
- Maximum wind speed is 10km/h, minimum wind speed for the rated level (132/230kv) is 3.2km/h;
- Earthquake intensity: ≤8 level;
- Minimum nominal creepage distance: 31mm/kV;
- Air pollution degree: Class IV.
Technical Specifications
| No. | Item | Units | Parameters | ||
| 1 | Rated voltage | kV | 40.5 | ||
| 2 | Rated insulation level |
1min power frequency withstand voltage |
dry | 95 | |
| wet | 80 | ||||
| Lightning impulse withstand voltage (peak) | 185 | ||||
| 3 | Rated current | A | 1250、1600、2000 | ||
| 4 | Rated short-circuit breaking current | kA | 20、25、31.5 | ||
| 5 | Rated operating sequence | O－0.3s -CO- 180s-CO | |||
| 6 | Rated short-circuit breaking current breaki ng times | Times | 12 | ||
| 7 | Rated short- circu it closed current (peak) | kA | 50、63、80 | ||
| 8 | Rated peak withstand curren t | ||||
| 9 | Rated short-time withstand current | kA | 20、25、31.5 | ||
| 10 | Rated short-circuit duration | S | 4 | ||
| 11 | Average opening speed | m/s | 1.5 ± 0.2 | ||
| 12 | Average closing speed | 0.7 ±0.2 | |||
| 13 | Contact closing bounce duration | s | ≤2 | ||
| 14 | Three phase closing and opening synchronism | ≤2 | |||
| 15 | Opening time | ≤150 | |||
| 16 | Closing time | ≤60 | |||
| 17 | Mechanism life | Times | 10000 | ||
| 18 | Rated operating voltage and aux ilia ry loop rated voltage | V | DC220 、1 10 、24 | ||
| AC220 、110 、24 | |||||
| 19 | Phase loop DC resistance (without current transformer） | uΩ | 100 | ||
| 20 | Permitted accumulate wear－thickness of dynamic and static contact | mm | 3 | ||
Jane Doe –
Mea cu case ludus integre, vide viderer eleifend ex mea
Jane Doe –
Feugiat delicata liberavisse id cum