Three-phase electricity, also known as industrial electricity, is 380V alternating current, which is widely used in industrial production; and most of the daily life uses single-phase electricity, also known as lighting electricity, which is 220V for household electricity, which is what people often say Two-phase electricity, in fact, its technical term is single-phase electricity.
We all know that three-phase electricity is industrial electricity, the voltage is 380V, and consists of three live wires; the two-phase electricity is civil electricity, the voltage is 220V, and it consists of a live wire and a neutral wire.
Each line of 380V is live. (Friendly reminder: Please connect with senior electricians, don't try your best, otherwise the consequences will be very serious), 220V is the phase voltage, that is, one neutral wire and one live wire. The most intuitive difference between three-phase electricity and single-phase electricity: single-phase electricity is generally two wires or three wires, and three-phase electricity is generally four wires in daily electricity use, which is what people often call three-phase four-wire. However, it was gradually upgraded to three-phase five-wire, that is, on the basis of the three-phase four-wire system, an additional ground wire was added.
The power consumption of CNC engraving machine cutting machine is mainly divided into driving power supply and spindle power supply.
The driving power supply is to supply power for the smaller power electrical components such as the driver, transformer, switching power supply, fan and so on of the engraving machine cutting machine. The left and right (X axis), front and back (Y axis), up and down (Z axis), and rotation (A, B, C axis) movements of the engraving machine cutting machine use the drive power. The driving power supply of most engraving machines on the market is 220V.
The spindle power supply supplies power to the spindle. We often say that the machine chooses three-phase power or two-phase power, 380V or 220V, which is the choice of spindle power supply. The spindle power supply supplies power to the inverter, and the inverter drives the spindle to rotate. The role of the spindle on the machine is very important. The tool is clamped on the spindle, and the spindle rotates to drive the tool to rotate to cut and engrave the material.
In addition, for panel furniture cutting machines, the power supply is generally 380V, because on the one hand, the vacuum suction pump voltage used by the vacuum suction table of the cutting machine is 380V, and on the other hand, most of the spindles used by the cutting machine are large. For power, 380V voltage is better for the safety of machine performance.
If you have three-phase power in your factory or home, you can simply choose three-phase power. Because the three-phase electricity is industrial electricity, the three live wires are stable, have sufficient power, and can support the work of high-power electrical appliances. If the spindle power is small, such as 0.8KW, 1.5KW, 2.2KW, 3KW, 220V single-phase power can also be selected.
For spindles with 4.5 kilowatts and 5.5 kilowatts and larger power, it is recommended to choose 380V three-phase electricity first. If conditions do not permit it, it is indeed difficult to connect to three-phase electricity. You can choose 220V single-phase electricity. This requires communication with the manufacturer of the engraving machine in advance, and "additions" to the spindle when doing power distribution, such as improving the wiring quality of the stator coil, selecting a reasonable winding method, and setting the parameters of the inverter reasonably. The "addition" is done well, the main shaft of the machine is in actual work, there is little difference between three-phase electricity and single-phase electricity. The “addition” is not well done, and the difference between three-phase power and single-phase power is still relatively large.