论文部分内容阅读
引进波兰综机配套的OW—1202型磁力起动器具有漏电闭锁系统。该系统由PZ—31型漏电闭锁继电器和ZPR人工星点组成,漏电闭锁系统的接线参见图1。一、漏电闭锁继电器的功能 PZ—31型漏电闭锁继电器对供电线路及电器设备起漏电闭锁保护作用。当合上磁力起动器前面的隔离开关,延时2～3秒后,PZ—31型漏电闭锁继电器投入工作。点(7—8)断开漏电闭锁指示灯LSU电路,指示灯不亮。当供电线路和电器设备的绝缘电阻值低于PZ—31的整定值时,则执行继电器P释放,其常开接点(2—4)、(5—8)打开,使接触器不能合闸送电;同时,常闭接点(7—8)闭合,指示灯LSU发亮,发出漏电闭锁指示。
The introduction of Polish integrated supporting OW-1202 magnetic starter with leakage lock system. The system consists of PZ-31-type earth leakage relays and ZPR artificial stars, leakage lock system wiring see Figure 1. First, the function of leakage lockout relay PZ-31-type leakage lockout relay on the power supply lines and electrical equipment from the leakage blocking protection. Close the magnetic switch in front of the isolation switch, delay 2 to 3 seconds, PZ-31-type leakage lock relay into operation. Point (7-8) Disconnect the Latch Led LSU circuit, the indicator is off. When the insulation resistance of the power supply lines and electrical equipment is lower than the setting value of PZ-31, the relay P is released and the normally open contacts (2-4) and (5-8) are opened to prevent the contactor from closing At the same time, the normally closed contact (7-8) is closed, the indicator LSU is illuminated, and a leakage lockout indication is issued.