| 用途 Application |
Ⅱ DW80系列礦用隔離爆型饋電開關，適用于煤礦井下或周圍介質中含有甲烷等爆炸性危險氣體的場所，在交流50Hz，電壓至660V的線路中作為供電系統的總開關、分支開關，也可作為的容量電動機不頻繁起動用，當線路發生過載和短路時能自動切斷電源。
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. |
| 型號 Model |
 |
| 技術參數 Technical parameter |
|
型號 Model |
DW80-200 |
DW80-350 |
|
額定工作電壓 Rated working voltage |
380V，660V |
380V，660V |
|
額定發熱電流 Rated thermal current |
200A |
350A |
|
過電流脫扣器額定電流 Rated current of over-current trip |
200A |
400A |
|
瞬時電流脫扣器整定電流 Rectified current of instantaneous-current trip |
200A-300A-600A |
400A-600A-1200A |
|
短路分斷能力 （有效值）
Short-circuit breaking capacity (Effective value) |
380V COSφ=0.35 |
10KA |
10KA |
|
660V COSφ=0.35 |
7KA |
7KA |
|
電纜外徑
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 | | | | |
|
|
