| 用途 Application |
Ⅱ 該產品適用于煤礦井下及其周圍介質中有甲烷、煤塵等爆炸性混合物氣體環境中，在交流50Hz，額定電壓為660V或1140V，額定電流400A及以下線路中作為供電系統的總開關（Z）和配電支路首未端的分開關（F）之用。當加設欠壓保護時也可作為電動機下頻繁起動之用。
Ⅱ 該產品保護系統采用先進的單片機技術，功能齊全，性能穩定可靠。
Ⅱ This product is applicable to coal mine or in ambient with explosible admixtre gas such as fire damp and coal dust in the surrounding medium.In the circuit with AC50Hz,rated voltage 660V or 1140V,rated current 400A or below,used as main switch (Z)for the power supply system system and branch switch (F)for head end and tail end of distribution branch.Also can be used as not - frequent starting for electromotor after adding under-voltage protect.
Ⅱ This product adopt advanced singlechip technology for the protect system,completely function and reliable performance |
| 型號 Model |
 |
| 技術參數 Technical parameter |
額定工作電壓 Rated working voltage
|
1140V
|
660V |
| 額定工作電流 Rated working current |
400A
|
| 斷路器極限分斷能力 Limit breaking capacity of breaker |
8000A
|
| 分段時間 Breaking time |
30mS
|
| 切斷短路電流時間 Time of cutting short-circuit current |
60mS
|
| 漏電保護動作阻值為 Resistance value of leakage protect action |
20KΩ |
11KΩ |
| 漏電閉鎖值 Leakage locking resistance value |
40KΩ |
22KΩ | | | | |
|
|
