The three-phase switchboard has zero and earth wires and busbars, as well as three-phase zero and earth terminals. Inside this board, there are two miniature switches that have the task of lighting the elevator tunnel light. On the door of the elevator's three-phase electrical switchboard, there is a three-phase roller switch and three signal lights, and when these lights are on, it indicates the presence of electricity in all three phases in the elevator's three-phase switchboard.
Three-phase switchboard in the elevator In fact, it is a box that is installed in the elevator engine room and acts as the input part of the elevator. The main task of the three-phase electrical panel in the elevator is to control the input current before the electricity enters the elevator control panel. In the three-phase electrical panel of the elevator, three cartridge fuses of 25 to 30 amps are placed; But you should use these currents according to the type of elevator and its application. The thickness and type of three-phase elevator cable depends on the power of the elevator motor. There are other factors, such as the length of the cable route and the capacity of the elevator, which depend on the type of elevator cable.