| 用途 Application |
Ⅱ 该产品适用于煤矿井下及其周围介质中有甲烷、煤尘等爆炸性混合物气体环境中，在交流50Hz，额定电压为660V或1140V，额定电流400A及以下线路中作为供电系统的总开关（Z）和配电支路首未端的分开关（F）之用。当加设欠压保护时也可作为电动机下频繁起动之用。
Ⅱ 该产品保护系统采用先进的单片机技术，功能齐全，性能稳定可靠。
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 |
| 型号 Model |
 |
| 技术参数 Technical parameter |
额定工作电压 Rated working voltage
|
1140V
|
660V |
| 额定工作电流 Rated working current |
400A
|
| 断路器极限分断能力 Limit breaking capacity of breaker |
8000A
|
| 分段时间 Breaking time |
30mS
|
| 切断短路电流时间 Time of cutting short-circuit current |
60mS
|
| 漏电保护动作阻值为 Resistance value of leakage protect action |
20KΩ |
11KΩ |
| 漏电闭锁值 Leakage locking resistance value |
40KΩ |
22KΩ | | | | |
|
|
