| 用途 Application |
Ⅱ 该产品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不频繁起动之用。
Ⅱ 该产品保护系统采用先进的单片技术，中文显示、配置PSM2003系统软件可实现煤矿配电自动化。
Ⅱ This series product is applicable for coal mine with firedamp or coal dust in the ambient,Applied as main switch (Z) of power aupply and branch switch(F) of terminal of disribution branch circuit of AC 50Hz rated voltage 660V or 1140V,rated current 400A and below,After add with a under-voltage protection,it can be used as infrequent start for electromotor.
Ⅱ The protection system of this product adopts Chinese display and advanced singlechip tecnology .Equipped with PSW2003 system software to realize automatization of distribution for coal mine. |
| 特点 Characteristics |
Ⅱ 馈电开关具有过载、短路、过压、断相保护、三相对称性漏电保护，选择性漏电博爱户，分支开关漏电保护的后备保护及漏电闭锁保护功能。
Ⅱ The feeding switch possesses functions of overload,short-circuit,over voltage protection,phase loss and three-phase symmetric leakage protection,back-up protection of branch switch leakage protection and leakage locking protection.
注：Ⅱ型为电抗器型、Ⅲ型为风电瓦斯闭锁型
Note:Ⅱis reactor type, Ⅲ is windy and electric gas locking type |
| 技术参数 Technical parameter |
|
额定工作电压 Rated working voltage |
400A |
500A |
630A |
|
额定工作电流 Rated working current |
1140V |
660V |
1140v |
660V |
1140v |
660V |
|
断路器极限分断能力 Limit breaking capacity of breaker |
7.5KA |
9KA |
9KA |
12.5KA |
12.5KA |
15KA |
|
分段时间 Breaking time |
30ms |
30ms |
30ms |
|
切断短路电流时间 Time of cutting short-circuit current |
60ms |
60ms |
60ms |
|
漏电保护动作阻值为 Resistance value of leakage protect action |
20KΩ |
11KΩ |
20KΩ |
11KΩ |
20KΩ |
11KΩ |
|
漏电闭锁值 Leakage locking resistance value |
40KΩ |
22KΩ |
40KΩ |
22KΩ |
40KΩ |
22KΩ | | | | |
|
|
