自动消除电网的瞬间单相接地故障
1. Automatic elimination of instantaneous single-phase grounding fault in power grid
2, 当发生较久性（金属）单相接地故障时,有两种选择：经选线装置或微机接地保护检出故障线路后,作用于跳闸；也可使电网在一定时间内带故障运行,待调度部 门 转移负荷后延时跳开故障线路,使电网具有很高的运行可靠性。
2. When a long-term (metal) single-phase grounding fault occurs, there are two choices: after fault line is detected by line selection device or microprocessor grounding protection, it acts on tripping; it can also make the power grid run with fault in a certain period of time, so that the power grid has high operational reliability when the dispatching department delays to jump out of the fault line after transferring load.
订货须知
Instructions for Order
1、消弧线圈的选型
1. Selection of Arc Suppression Coil
1.1 系统的单相接地电容电流，Ic；
1.1 Single-phase grounding capacitive current, Ic;
1.2 补偿上下限，计算方法：上限=Ic＋30%Ic A；下限=选择5或10A；
1.2 Compensation upper and lower limits, calculation methods: upper limit = Ic + 30% Ic A; lower limit = 5 or 10A;
1.3 调节方式：偏磁式、调匝式、调容式；
1.3 Regulating modes: magnetic bias type, turn-adjusting type and capacitance-adjusting type;
2、消弧线圈额定电压；补偿电流的调节范围，消弧线圈容量=zui大补偿电流×系统相电压；
2. The rated voltage of the arc suppression coil, the regulating range of compensation current, the capacity of the arc suppression coil = Zui large compensation current * system voltage;
3、接地变压器的额定容量和额定电压；
3. The rated capacity and voltage of grounding transformer;
4、柜体要求：柜体尺寸、颜色、柜体开门为内扣还是外扣；
4. Cabinet requirements: Cabinet size, color, cabinet door opening for internal buckle or external buckle;
5、安装地点：户内户外，IP防护等级。
5. Installation location: indoor and outdoor, IP protection level.