The control circuit diagram drawn in electrical technology is a schematic diagram. The actual position and structure of the electrical are not taken into account when drawing the electrical schematic, but the following principles must be observed: 1. When drawing the electrical schematic, you must use the national electrical symbol and text symbol. 2. The electrical control circuit consists of two parts: the main circuit (the circuit where the load is controlled) and the control circuit (the main circuit state). 3. Different parts of the same electrical component (such as contacts and coils of the contactor) are drawn in different circuits according to the function and the connected circuit, but the same text symbols must be marked. 4. The graphical symbols of all electrical components are drawn according to the state of no power or external force. 5. Electrical component parts (such as the core and spring of the contactor) that are not related to the circuit when drawing the electrical schematic are not shown in the control loop. When designing the electrical control circuit, the circuit is simple, the electrical components are small, and the electrical action is accurate and reliable. 2. When designing the electrical control circuit, it should be avoided that multiple electrical components can be operated in sequence to switch on the circuit of another electrical device. 3. The rated power of each coil must be guaranteed. It is strictly forbidden to use two coils in series. XLPE Cable,XLPE Electrical Cable,500V motor winding wire,motor cable Jiangyin City Weicheng Special Cable Co.,Ltd , https://www.weichengcable.com
Electrical schematic specification: 
