Introduce
GN22-12 Disconnect switch is an indoor electric apparatus of rated voltage 12kV three-phase AC 50160Hz.it is used to break,make and transfer lines when the HV apparatus is under situations with voltage and no-load.
Ambient condition
1、Altitude:≤1000m。
2、Ambient temperature:-25°C~+40℃。
3、Relative humidity:daily average S95%,monthly average ≤90%。
4、Steam pressure:daily average ≤2.2*10-3MPa,monthly average ≤1.8*10-3Mpa
5、Applicable occasions should free from inflammables,explosives.corrosives and severe vibralion。
Model implication
Technical specification
| 名称Item | 单位Units | 数据Parameters | ||
| 额定电压Rated voltage | KV | 12 | ||
| 额定频率Rated frequency | Hz | 50 | ||
| 额定电流Rated current | A | 1600-2000 | 2500-3150 | |
| 额定短时耐受电流Rated short-circuit resistance current | KA | 40 | 50 | |
| 额定峰值耐受电流Rated peak withstand current | KA | 100 | 125 | |
| 额定短路持续时间Rated short-circuit duration | S | 4 | ||
| 额定绝缘水平 Rated nsulating level | 1min工频耐压1min.PF withstand voltage | KV | 极间、极对地42断口49 Phase to phase/to earth:42,across open contacts:49 | |
| 雷电冲击耐压(峰值) Lightning impulse withstand voltage(peak) | KV | 极间、极对地75断口85 Phase to phase/to earth:75,across open contacts:85 | ||
0verall dimension
