与东风200型潜孔钻和73—200型潜孔钻配套的LG—22/7型螺杆式空压机都选用上海工农电器厂生产的225千瓦综合起动器。起动器的电控线路如图1。由于采用中间继电器较多,致使线路较复杂,而且使用在矿山移动式设备上,机械振动大,加之粉尘、油污、潮湿等恶劣环境影响,所以电控系统经常发生故 LG-22/7 screw air compressor matched with Dongfeng 200 DTH drill and 73-200 DTH drill are all selected with 225 kW integrated starter manufactured by Shanghai Industrial and Rural Electrical Appliance Factory. Starter of the electronic control circuit shown in Figure 1. As the use of more intermediate relays, resulting in more complicated lines, and the use of mobile equipment in the mine, the mechanical vibration, coupled with dust, oil, moisture and other harsh environments, so the electronic control system often happen