Wiring is a very important part of the installation of group hoisting electric hoist. Combining with the wiring problem of group hoisting electric hoist, I will give you a detailed introduction of how to wire it, which is conducive to a more accurate understanding of the use of the product. First, the control loop must be connected to the forward and reverse control. The two buttons are connected in series, and then the two buttons that control the forward and reverse positions are connected and connected to one end of the stop button. The other end of the stop button is ready to be connected to the power supply, and then the two buttons are connected to the power supply. The normally open auxiliary contacts of the reversing main contactor are connected in parallel to the two ends of the corresponding start button respectively, and then the normally closed auxiliary contacts of the respective main contactors are connected in series to the start circuit of the other party, that is to say the normal closed of the forward rotation It is connected in series to one end of the reverse start button, and the normally closed contact corresponding to the reverse rotation should be connected in series with the end of the forward start button to act as an interlock. (That is to say, the normally closed auxiliary contact of the contactor will The reverse start circuit is disconnected, and vice versa. This is the same reason, in order to avoid that pressing the button at the same time will form a short circuit between phases. This will be explained later), and then connect the other ends of the two normally closed contacts Respectively connect with the coil section of the main contactor of the corresponding starting circuit (that is, the circuit that controls the forward start is connected in series with the coil section of the forward contactor, and the reverse start control circuit is connected with the reverse main contactor One end of the coil is connected in series, don’t confuse it) Connect the other ends of the two coils in parallel and connect to one end of the normally closed contact of the thermal relay. The other end of the normally closed contact of the thermal relay is prepared to connect with the neutral point N or the other Phase line connection, this depends on the voltage of the main contactor coil (220V is connected to the neutral point N, if 380V, it is connected to the other phase line). It is also necessary to connect the button at the forefront of the control loop, that is, the end where the button is ready to be connected to the power supply. Before connecting to the phase wire system, a control is required, and now it can only be said that the control loop is connected.