| 用途 Application |
Ⅱ DW80系列矿用隔离爆型馈电开关，适用于煤矿井下或周围介质中含有甲烷等爆炸性危险气体的场所，在交流50Hz，电压至660V的线路中作为供电系统的总开关、分支开关，也可作为的容量电动机不频繁起动用，当线路发生过载和短路时能自动切断电源。
Ⅱ DW80 Series exploding isolation type feeding switch used for mining is applicable to coal mine or in ambient with explosible admixture gas such as firedamp in the surrounding medum, In the circuit with AC50Hz,rated voltage 600V used as main switch and branch switch for the power supply system.Also can be used as not-frequent starting for large capacity electromotor,and when appear overload and short circuit ,it will cut the power supply automatically. |
| 型号 Model |
 |
| 技术参数 Technical parameter |
|
型号 Model |
DW80-200 |
DW80-350 |
|
额定工作电压 Rated working voltage |
380V，660V |
380V，660V |
|
额定发热电流 Rated thermal current |
200A |
350A |
|
过电流脱扣器额定电流 Rated current of over-current trip |
200A |
400A |
|
瞬时电流脱扣器整定电流 Rectified current of instantaneous-current trip |
200A-300A-600A |
400A-600A-1200A |
|
短路分断能力 （有效值）
Short-circuit breaking capacity (Effective value) |
380V COSφ=0.35 |
10KA |
10KA |
|
660V COSφ=0.35 |
7KA |
7KA |
|
电缆外径
Outside diameter of cabe |
主回路 Main circuit |
φ42-51 |
φ55-63 |
|
控制回路 Control circuit |
φ 12-19 |
φ12-19 | 12-19
|
重量 Weight |
140 kg |
140kg | | | | |
|
|
