| 用途 Application |
Ⅱ 该产品用于煤矿井下交流50Hz，电压为1140V或660V，额定电流至500A或630A的中性点不直接接地的三相电网中，作为移动变动电站用低压馈电开关，或单独作为配电系统总开关、分支开关，也可作为大容量电动机不频繁起动以用。
Ⅱ 馈电开关具有过载、短路、欠压、过压、缺相、漏电与漏电闭锁、电网绝缘状态显示、高低压电气联锁等功能。
Ⅱ This product is applicable to coal mine three-phase power network which is neutral point and not direct grounding,and AC50Hz,rated voltage is 1140V or 660V,rated current to 500A or 630A.It used for mobile substation as low voltage feeding switch,or eparated used as main switch or branch switch for distribution system,also can be used for not-frequent starting for large capacity electromotor.
Ⅱ The feeding switch possess the functions such as overload,short circuit, under voltage,excess voltage ,phase loss,electrical leakage and turn off when leakage,displaying of power network insulation state4,voltage and low voltage electrical interlock,etc. |
| 特点 Characteristics |
Ⅱ 采用单片机智能保护器，中文显示，技术先进。
Ⅱ 保护功能齐全。
Ⅱ 能组成选择性漏电保护系统。
Ⅱ 能记忆故障参数。
Ⅱ Adopt singlechip intelligent protector,Chinese display,and with advanced technology
Ⅱ Complete protecting functions
Ⅱ Can form selective electrical leakage protect system
Ⅱ Can remember fault parameter |
| 技术参数 Technical parameter |
产品型号Model
|
BKD20-500Z/1140(Y)
|
BKD20-630Z/1140(Y) |
| 额定工作电流Rated working current |
500A
|
630A |
| 额定工作电压Rated working voltage |
1140V |
660V |
1140V |
660V |
| 极限分断能力Limit breaking capacity |
9KA
|
12.5KA |
12.5KA |
15KA |
| 电寿命Electricity service life |
3000次 times
|
3000次 times |
| 机械寿命Machine service life |
15000 次times |
15000次 times | | | | |
|
|
