The principle of electric wall of electric water heater
LimitationsBut this protection is conditional: 1, tap water to achieve sufficient purity ~ due to China's vast territory and abundant resources, the development of the poor, may be some local water quality is relatively poor, so it is difficult to play a role in the wall discharge. 2, can be protected because the ground wire is charged, the water heater fault leakage, but if installed improperly, can not protect the electric shock caused by the live water pipe. 3, if the user is false ground wire, while the electric water heater leakage caused by ground wire with fire, the user's home appliance may be charged, become an accident hidden danger.
brief introductionAnti electric wall heater, can make people bathing in unsafe electrical environment protected, its principle is as follows: for some reason when the water heater liner water 220V voltage, water heater common after the body, then the body is formed on the 220V voltage difference, this will result in great harm to the human body, while Haier anti electric wall heater, the water in the liner without his direct outflow, but after a long period of water after the outflow, with the increase of the length of the pipe, the pipe internal resistance increases, so the water pipeline in the liner had longer and then flow to the human body the equivalent, a series circuit, the line is long, so its resistance value is relatively large, then the above partial pressure is very high, then the body pressure is relatively low, after the calculation of the human body is divided into: The pressure is about 12V, so the voltage does not cause any harm to the human body, thus effectively ensuring the safety of people. 1, pure water is non-conductive. 2, regular tap water has a certain electrical conductivity, but not a good conductor, because of the small amount of mineral. 3, anti electric wall (or other similar name) water heater inlet and outlet pipe using PPR plastic pipe is an insulating material. 4, select a certain length and caliber of the pipe to limit the conductive path of water, so that it reaches a certain resistance. 5, in case of leakage, the current flowing through the human body is limited due to the large resistance of the water. 6, as long as the leakage of electricity through the human body does not reach the fatal current value, people can escape the robbery.
SolutionIn order to ensure the safety of users, Haier electric water heater introduced the "anti - electric wall" technology in March 2002 to solve the problem of environmental electrification. Haier "anti power wall" technology can not only solve the problem of leakage caused by the positive elements inside the water heater leakage, but also can effectively solve the problem of reverse leakage caused by the leakage of the environment, from product safety to achieve system security across. Therefore, for China's harsh electricity environment, anti - electric wall technology has become a thorough solution to the problem of bathing safety. "Anti - electric wall" technology has become the national standard, has officially started publicity, to July 1st next year, the formal implementation. It has been designated by the National Standardization Committee as the 1 type of strengthening standard. The standard is not mandatory, other manufacturers, such as the production of 1 types of enhanced safety standards for electric water heaters can not use anti - electric wall technology, but must meet the standards for such products technical testing requirements. Compared with the old standards to solve the product safety of electric water heaters, the biggest contribution of the new national standard is to put forward and completely solve the safety problems of the use of electric water heaters. Statistics show that in recent years, China has repeatedly occurred electric water heater wounding incident, the culprit is almost all consumers, household electrical environment, there are security risks. Therefore, it is urgent to solve the problem of the safety of electric water heater. In the new standard, it is clearly stipulated that the electric water heater must have: "in the use of water heaters, once the exception of the grounding system other than the appliance, it should ensure the safety of the user."".
The anti - electric wall technology is to form permanent resistance inside the electric water heater, thus reducing the abnormal current passing through the human body. The standard voltage of our country is 220V, and the maximum voltage that the human body receives after the anti electric wall is treated is equivalent to 12V, which is lower than the safety voltage 36V of the human body, and this ensures the safety.
