1, the indicator light (also known as the signal lamp) is mainly caused by the way of light indication, which causes the operator to notice or instruct the operator to do some operation, and as an indication that a certain state or instruction is being executed or executed.
2. In general, red or yellow lights are used for power instructions and closing instructions. A red signal lamp is used for the motor's operation instructions and failure instructions, and the green signal is stopped. A white lamp is used for the operation of the reactive power compensation capacitor. The star triangle running instructions indicate the use of the yellow light, and the triangle runs with the red light.