China 220V, US 110V, Japan 100V, Why The Global Voltage Is Different？
As we all know, the civil voltage standard in our country is 220V. But I don't know if you will have such a question, is the civil voltage of all countries in the world the same? Why does our country set the civil voltage at 220V?
Speaking of this aspect, we have to look back on history, and we also need to talk about the famous "AC and DC War".
The AC and DC wars arose from the battle between the direct current invented by Edison and the alternating current invented by Tesla. Edison uses 110V voltage to provide users with DC power, and Tesla uses 3-phase 110V AC power supply. Due to the advantages of AC power transmission with low long-distance transmission loss, Tesla won the AC-DC battle in the end.
After the alternating current successfully defeated the direct current, it was promoted vigorously, but due to the low voltage of 110V, the loss during long-distance transmission is still relatively large. At that time, after World War II, Europe and other regions had not invested a lot of power facilities and electrical equipment, and the cost of transformation was not very large. Therefore, Europe finally raised the voltage to 220V, and the 220V/50Hz AC grid standard was formed in Europe. In the United States, there are already a lot of electrical appliances using 110V. If forced replacement will lead to a lot of waste, the best time has been missed. Therefore, in the end, the United States can only adopt a compromise solution - 220V power input to users, which is converted into 110V to power electrical appliances.
In addition to 110V and 220V, there are many different voltage standards such as 100V, 200V, 230V, etc. in various countries around the world. For example, the civilian voltage standard in Japan is 100V, but the international mainstream voltage is still 220V and 110V.
The coexistence of various international voltage standards will actually have a subtle impact on people's lives.
In general, electrical appliances such as mobile phones and notebooks are compatible with global voltages because they use less power. A small-sized adapter can realize the function of voltage transformation, and it can be universally used only by connecting the plug converter. However, it is difficult for large-scale electrical appliances such as rice cookers and induction cookers to achieve the above convenient conditions. To achieve global voltage compatibility, the adapters required will be very large, so these types of electrical appliances will be set according to the actual local voltage conditions.
Therefore, with the above introduction, you can imagine that some electrical appliances purchased from overseas must be used with caution when returning to China, and you must be optimistic about the voltage requirements. Electric appliances with different voltages need to be used together with power transformers, otherwise, the appliances you have worked so hard to get will be burnt out in an instant.
We are one of the big suppliers of energy meter and water meter. Our products are mainly smart products, such as smart wifi electric meter, wifi water meter, lora electric meter, lora water meter, remote control electric meter, remote control water meter, etc. If you are looking for any meter, please feel free to contact us.
