A small partner who often travels abroad will definitely find that some countries have sockets that say 110V instead of 220V on Chinese sockets. Wow, does the voltage have national boundaries, and each country is different?
So, is the voltage of 220 volts Chinese characteristics?
First look at the voltage situation of a group of national electricity
100 volts
Only 2 countries
Japan, North Korea
110 to 130 volts
About 30 countries (regions)
United States, Canada, Panama, Cuba, Lebanon, Mexico, and Taiwan
220 to 230 volts
About 120 countries
UK, Germany, France, China, Singapore, Hong Kong (200V), Italy, Spain, Greece, Austria, Netherlands, Philippines, Thailand, Norway, Singapore, India, New Zealand, Australia
(Of course, in countries with 220-230 volts, there are also situations where it is necessary to use 110 to 130 volts, such as Sweden and Russia.)
After listening to the introduction of the grid, the little friend finally breathed a sigh of relief. It turned out that there are still quite a lot of countries in the world with 220 volt AC. However, the problem is not over yet: Why is China not using the same 110 volt AC as the United States? The simple idea of the little friend is: the voltage is lower, it seems safer.
This problem is more complicated, and the network is slowly coming.
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In 1879, Edison produced a better-effect carbon filament incandescent lamp. The incandescent lamp at that time operated well at 110 VDC, which Edison considered to be a safe and economical voltage in distribution.
But later, another voltage level - 220 volts was also recommended for use in the low voltage field. After the two great geniuses Edison and Tesla had a big argument about "DC or strong communication", the United States gradually began to adopt 110 volt AC. Of course, the United States has seen many voltage types in the development of the power system, but it is mainly 110 volts and 220 volts, and 110 volts gradually wins during the development process.
With the advancement of electrical appliances and the development of transmission means, there is no difference between the practical use of 110 volts and 220 volts.
So, why don’t China learn the Stars and States, using 110 volt AC voltage?
Because, after using 110 volts AC voltage in the United States, Europe believes that 110 volts is too low, and the loss is much larger in transmission (at that time, transformer and high voltage transmission are not very common), and some appliances are not enough. Pushed 220 volts and was later inherited by most countries.
QQ picture 20161024195234
As we all know, the old China's low productivity and economical failure can reduce the loss and reduce the consumption of metals such as copper. Of course, it is very good. 220 volts is easily accepted by power supply operators. In the 16th year of Guangxu reign (1890), Shanghai began to use incandescent lamps with a voltage of 100 volts. In the 27th year of Guangxu (1901), the Shanghai public concession began to supply electricity day and night, and the voltage was changed to 200 volts.
On September 12, 1930, the National Government announced China's first voltage frequency standard in the form of a construction committee order, stipulating 220 volts and 50 Hz as China's standard voltage and standard frequency.
After the founding of New China, it will be a good thing to save a little. Therefore, the "rated voltage and frequency standards" and "power supply rules" that have been formulated many times are based on 220 volts.
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So, is 110 volts safer than 220 volts?
In principle, the lower the voltage, the higher the natural safety. It has been calculated that the time required for 110 volts is indeed longer than 220 volts, and the difference is about 100 milliseconds in the time of the physiological and even fatal damage to the human body. But in fact, 110 volts and 220 volts are greatly exceeded. The range of safety voltages. In addition, in the case of electric shock, the actual size of the current is determined by the magnitude of the current, so whether it is dangerous or not depends on the electric shock environment.
Another issue that is very concerned by a small partner is:
Some common electrical appliances are used abroad, will it cause problems due to voltage differences?
Common electrical appliances that belong to the same voltage system are used abroad. The voltage is generally not a problem, because most electrical appliances have a 20% voltage fluctuation range such as electric furnaces, rice cookers, etc., because sometimes the voltage is the highest in the country. It can also reach 250 volts, so the voltage of 230 volts just makes them heat up faster, without much problem.
For those electrical appliances that are more stringent in voltage and more expensive, even if they belong to a voltage system, it is recommended to use a travel transformer if the voltage is different, so as not to burn the appliance or affect the service life of the appliance.
If high-voltage electrical appliances are brought to countries with low voltages, such as China's 220 volt electrical appliances brought to the United States 110 volts environment, it is generally unusable, even if it can barely be used, it is often delayed or like a bull. The use of features is greatly reduced.
However, in the context of globalization, some smart international companies may have noticed the difference in voltage between countries. Therefore, many of the designed appliances have their own voltages, which can be suitable for voltages from 110 volts to 240 volts, such as Haier. The floating range of the color TV is marked as: AC 90-260 volts, 50 Hz, so it can be used as usual at voltages of 90 to 260 volts. Of course, if you go abroad often, the general travel agency recommends that you go abroad to bring your own travel adapter and travel transformer.
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