Modified sine wave inverter should avoid “inductive load”

In common, that is, the high power electrical products applying the principle of electromagnetic induction, such as electric motors, compressors, relays, fluorescent lamps and so on. This type of product requires a much larger current (about 5-7 times) than the current required to maintain the normal operation. For example, a refrigerator in the normal operation of about 150 watts of power consumption, the power can be up to more than 1000 watts. In addition, due to inductive load will generate the back EMF voltage in the moment of the power supply is switched on or off, the voltage
peak is far greater than the voltage value which inverter can stand, it is easy to cause the instantaneous overload of vehicle inverter, affects the using life of inverter. When measuring the AC output of the modified sine wave vehicle inverter by using a common universal meter, the voltage is 20V lower than 220 volts. Problems occur in the operation of precision equipment, can cause high frequency interference to the communication equipment.

评论

发表评论

此博客中的热门博文

How to maximize the efficiency of your UPS

图片
1.Use of AC voltage regulator After using  UPS power supply , there is no need to add AC voltage regulator. If it must be added, it should be added to the front level of UPS, that is, the mains power first passes through the AC voltage regulator, then through the ups, and then to the load. 2.Battery balanced charging skills At present, valve regulated lead-acid battery (VRLA) used in many ups power supply is called maintenance free battery from the beginning, which gives users a misunderstanding that it seems that this battery is durable and does not need maintenance at all. Under this kind of misleading, many users have not carried out maintenance and management since they installed the battery. When the battery in UPS power supply meets the following conditions, the battery shall be charged evenly: when the terminal voltage is lower than the specified calibration voltage due to excessive discharge. For 12 V small sealed lead-acid batteries, the discharge calibration voltage is 10.
阅读全文

126th Canton Fair

图片
On Oct 15th 2019, as one of the most important trade promotion platforms for Chinese enterprises to expand the global market, Canton Fair in Guangzhou focused on highlighting innovation driven, and “independent brand” became a high-frequency word of Canton Fair. Xu Bing, a spokesman for the Canton Fair and deputy director of the China Foreign Trade Center, said that the domestic and foreign environment faced by China’s foreign trade development this year is more complex and uncertain. The majority of exhibitors accelerated quality improvement and innovation, and continued to make efforts in technology research and development, product innovation, brand cultivation, etc., with high technology, high quality, high added value and independent brand products emerging. Many independent innovative R & D products are welcomed by the market. At the same time, purchasers are less sensitive to price and pay more attention to the technology, brand, quality and service of products. In
阅读全文

Why the IDC needs to be equipped with UPS

图片
The equipment in  IDC  is very important. Servers, computers, monitoring and so on, all above need to be ensured normal power supply, especially the transmission and reception of data on the network. These are all used for servers, so the reliability of servers is guaranteed. Sudden power failure, instant voltage and current at incoming calls will be very high. Some precision equipment can be burnout through this instant impact.  UPS  has voltage stabilizing function and its existence protects the safety of these devices under such circumstances.The process of some work can not be blackout, such as operation, test, scientific research, charge and so on. These places must be protected by UPS power supply. The role of UPS power is to enable us to have enough time to store data in the case of some urgent outages, and also that is UPS. It is also the UPS’s voltage stabilizing function that can effectively protect the electrical safety of the equipment. How to choose UPS？ 1.Determine the
阅读全文