First, as a cash register product, the power supply must have good grounding performance and the grounding resistance is less than 1 Ω. If the power supply is not grounded or the grounding is poor, it may cause the chassis to be charged, which may pose a safety hazard to the operator and affect the stable operation of the cash register. Furthermore, the grid voltage is 220V/50HZ AC, and the allowable fluctuation range of the grid voltage is ±10% of the rated value. Before the equipment is powered on, please check whether the power supply meets the voltage requirements of this product. Only when confirming that the external power supply is normal, You can power on the device. However, in order to avoid sudden interruption of power supply, fluctuations in grid voltage, and transient spikes, a suitable uninterruptible power supply (UPS) should be selected as needed. However, the protection ground of the UPS power supply should be connected.
Since most of the cash register products use ATX power supply, the main power supply is not completely turned off when the power is turned off. If you want to disconnect the power supply, you should disconnect the socket switch or unplug the power plug, especially in thunderstorms. Causes lightning strikes on equipment. The neutral line and the live line of the power supply socket must not be connected incorrectly. The protection ground line of the cash register must not be directly connected to the zero line of the power grid in the equipment room. The ground line must be connected to the absolute ground of the building.
In order to avoid interference from other electrical equipment to the cash register, the cash register must be separately led out from the power distribution room and cannot share the same line with other high-power equipment, such as: power tools, refrigerators, freezers, electric heaters, air conditioners, etc. Power consumers share one power supply. At the same time, in order to reduce the interference of the power supply on the data signal, the power cable and the data cable (display, network cable, printer data cable, serial communication cable) should be kept at a distance of more than 100 MM at the time of installation, and the power cable and the data cable are never allowed to be wrapped. Together.
Finally, when the cash register is turned on, you should first turn on the external device power switch, and then turn on the host power. When shutting down, you should first turn off the power of the host and then turn off the power of the external device.
Table lamps generally refer to electric lamps with bases that are placed on the table. However, with the advancement of technology, the appearance and shape of table lamps are constantly developing, and magnetic table lamps that can be attached to any position have gradually appeared. , its small and exquisite, easy to carry. The function of the table lamp is mainly to illuminate, which is convenient for reading, learning, work, etc. The table lamp has far surpassed its own value and has even become a work of art. What role does lighting play in home life? In the dark night, the light is the wizard, and it is the master of creating a warm atmosphere. Through the layers of light and shadow, the space is full of vitality; during the day, the lamps become the decorative art of the living room, which embellishes the life together with the furniture, fabrics and decorations.
Table lamps are classified according to their functions: reading table lamps, decorative table lamps, accompanying reading table lamps, and portable table lamps.
Reading table lamp, the lamp body is simple and light in appearance, refers to a table lamp specially used for reading and writing, this kind of table lamp can generally adjust the height of the lamp pole, the direction and brightness of the light, mainly for the lighting reading function.
The decorative table lamp has a luxurious appearance, various materials and styles, and a complex lamp body structure. It is used to embellish the space effect. The decorative function is as important as the lighting function.
Table Lamp,Bedside Lamp,Table Lamps,Table Lamp Base
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