BDN auto-recloser is type of outdoor high voltage vacuum circuit breaker using integral unique design of embedded poleand high reliability of the operating mechanism.The device is mainly used in medium voltage overhead powergrid,As, Load curent, overload current and short-circuit current,high reliability, high mechanical life,small size, light weight and easy to instal.
1.Air temperature: Maximum temperature: +85ºC; Minimum temperature:-45ºC
2.Humidity: Monthly average humidity 95%; Daily average humidity 90% .
3.Altitude above sea level: Maximum installation altitude: 2500m or more higher.
4.Ambient air not apparently polluted by corrosive and flammable gas, vapor etc.
5.Summer barometric 84.7Kpa(635mmHg) Winter barometric 85.6Kpa(642mmHg) Max wind speed 34m/s
6.Humidity of 13mg and Vapour Pressure 17mm/Hg. No frequent violent shake.
| Item | Unit | Data | ||||
| Rated voltage | kV | 11/15 | 27 | 38 | ||
| Rated current | A | 400/630/800/1250 | ||||
| Rated frequency | Hz | 50/60 | ||||
| Rated short circuit breaking current | kA | 12.5/16/20/25 | ||||
| Rated short current switching current(peak) | kA | 31.5/40/50/63 | ||||
| Lightning impulse withstand voltage(peak) | kV | 95/110 | 125/165 | 170/200 | ||
| Rated peak value withstand current | kA | 31.5/40/50/63 | ||||
| 4S short time withstand current | kA | 12.5/16/20/25 | ||||
| Rated operating circulate | O-0.5S-CO-2S-CO-5S-CO | |||||
| Breaking current frequency under rated short circuit | time | 200 | ||||
| Mechanism life | time | 30000 | ||||
| Secondary loop 1 min power frequency withstand | kV | 2 | ||||
