论文部分内容阅读
我矿有3台4m3电动挖掘机，采用（SCR-2F-D）可控硅励磁双励发电机电动机拖动系统，是我矿露天生产关键设备之一。机上的电器设备原来每隔2年调整1次，现在半年就要调整。原来设备电器的调试工作是一件繁琐调试过程，经过改进，调整时间大为缩短，步骤如下。1静态部分调试1.1两拍位移的测试两个位移端子挂上2块毫安表，合上电源2块表的读书应为5mA，两拍调整时数值要一样。1.2常见故障（1）如果两拍位移数值调整的过低（如3mA左右时），磁性触发器参数发生了改变，可控硅容易产生误导通。（2）两拍位移数值的过大时，磁性触发器放大系数会降低。
My mine has 3 sets of 4m3 electric excavators, using (SCR-2F-D) dual-excitation silicon controlled excitation motor drive system is one of the key open-pit production equipment mine. The original electrical equipment on the machine every 2 years to adjust 1, now six months will be adjusted. The original equipment, electrical commissioning work is a tedious debugging process, after the improvement, greatly shorten the adjustment time, the following steps. A static part of the debugging 1.1 Two-shot displacement test Two displacement terminals hanging 2 mA table, close the power supply 2 table reading should be 5mA, two shots to adjust the value to be the same. 1.2 Common Faults (1) If the two-shot displacement adjustment is too low (such as 3mA or so), the magnetic trigger parameters have changed, easy to produce misleading SCR. (2) When the two-shot displacement value is too large, the magnetic trigger amplification factor will decrease.