6台Senebogen公司产633M型起重机,随着使用时间的延长,因启动电路故障烧损启动机的事故时有发生,改进如下。该机原启动电路如图1所示,当驾驶员将启动开关5扳至α侧时,蓄电池的电流将经启动开关通至发电机D~+端,开始励磁。而当启动发动机时,须将启动开关扳 6 Senebogen company 633M cranes, with the extension of the use of time, due to start-up circuit failure burned starter accident occurred, improved as follows. The original starting circuit of the aircraft shown in Figure 1, when the driver will start the switch 5 to the α side, the battery current through the start switch to the generator D ~ + end, start excitation. When starting the engine, the switch must be activated