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With the promotion of new energy vehicles, the demand for electric vehicle charging pile also further increased. It is found that the main reasons for the difficulty in the promotion of electric vehicles are the small number of charging piles, slow charging speed and single charging object. In order to assist the promotion of new energy vehicles, China is gradually increasing the configuration of vehicle charging piles. In October 2015, the State Council pointed out that large public buildings should be equipped with parking lots, charging facilities or reserved

In particular, the international standards of the medical care unit, such as the electric equipment and isolation room, are introduced in many fields, such as the national standard of the intensive care unit, the isolation room and so on. Its purpose is to provide a safe and reliable power supply for medical appliances in the place, so as to ensure the safety of patients. Product application: anesthesia room, operation room, operation preparation room, operation plaster room, operation recovery room

The design concept has high reliability, adopts digital control technology and perfect protection circuit, and has good stability; the original imported IGBT module is used for power devices, which has strong overload and shock resistance capability; double transformation online design makes the output of ups as a pure sine wave power supply with frequency tracking phase lock, noise filtering, low distortion and no interference from power grid fluctuation, which can provide users with equipment More comprehensive and perfect protection. The load protection ability is strong

Capacity refers to the rated capacity of the transformer. The larger the capacity is, the greater the load capacity is, the smaller the corresponding impedance is. On the contrary, the smaller the capacity is, the smaller the load capacity is, the greater the corresponding impedance is. It can be understood as the power of the transformer. This power refers to the apparent power, that is, the total power provided to the load. For the resistive load, it can carry a load as large as the transformer capacity, but not for the inductive load, because it is

JJW JSW series high precision automatic AC purification voltage regulator has the characteristics of high voltage stabilization precision, fast dynamic response speed, small distortion, strong load adaptability, strong anti electromagnetic interference ability and so on. It can also absorb and suppress all kinds of noise and peak voltage of power grid. It is widely used in household appliances, precision instruments, testing equipment, office equipment, medical equipment, industrial equipment, system facilities, etc

Overview of technical parameters and application of single phase transformer BK series single phase transformer is produced by our company with high quality materials and advanced technology for many years. It goes deep into the load center. It is mainly used in various power supply places with AC 50-60Hz and voltage not exceeding 1140V. All kinds of input and output voltage, connection group and tap line group capacity distribution of products can be designed and manufactured according to user's requirements. More European fire prevention

With the development of science and technology and economy, the application of information technology and microelectronics technology, especially after the application of electronic computer technology to the field of industry and scientific research, all kinds of electronic equipment require stable AC power supply. However, there are still many areas in China whose power supply quality is not high, which is manifested in three-phase imbalance, under voltage or over-voltage and voltage fluctuation Surge pulse interference, and even sudden power failure or failure

The electric energy produced by the power plant is three-phase electricity. When the three-phase electricity is transmitted to the user end, a wire shall be led out from the center point (neutral point) of the three-phase line for grounding treatment. After grounding, a line is led out from this point and connected to the user's home. This line is called the neutral line (zero line). Take any one of the three phase lines, pass into the user's home, this line is called phase line (live wire). In this way, a single-phase power supply for household use is formed. Experienced friends will

For example, users will have higher requirements for the output voltage of the small-scale IBM computers, such as low-voltage, low-voltage, etc. However, in the actual engineering installation and start-up debugging, it is found that the measured output zero to ground voltage still meets the requirements when the UPS is not started. After the UPS is powered on, the output zero ground voltage measured by UPS will rise, and the zero ground voltage may exceed the required range. The reason is

The design concept has high reliability, adopts digital control technology and perfect protection circuit, and has good stability; the original imported IGBT module is used for power devices, which has strong overload and shock resistance capability; double transformation online design makes the output of ups as a pure sine wave power supply with frequency tracking phase lock, noise filtering, low distortion and no interference from power grid fluctuation, which can provide users with equipment More comprehensive protection. The load protection ability is strong

For amorphous silicon thin film module, the negative grounding is generally required (the negative grounding is to prevent polarization and corrosion), and the conduction of inverter power switch tube is random. If there is no isolation transformer, there will be a phase to ground short circuit in the power grid. Therefore, in the application of amorphous silicon thin film module grid connected power generation, it is necessary to require the AC side and the grid for safety performance requirements With isolation transformer. So if the PV module is a-Si module

The connection group of transformer is a representation of the combination connection form of primary winding and secondary winding of transformer; common connection methods of transformer winding are "triangle connection" and "star connection"; in connection group of transformer, "d" is triangle connection, "yn" is star connection with neutral wire, y is star shaped and N is n "11" represents the line voltage UA at the secondary side of the transformer

The output terminal of UPS is connected with isolation transformer, which can produce isolation grounding point and voltage transformation. The advantages of isolation transformer applied in ups are as follows: 1. It can reduce the zero to ground voltage and optimize the ups terminal power supply network. The isolation transformer installed in the inverter output of UPS can isolate the electrical connection between input and output, thus effectively reducing the zero to ground voltage at the output end. 2. It can filter out

The transformer is an important device to convert electric current and voltage into another kind of electrical equipment. It can be wound according to the principle of different applications

With the rapid development of China's economic construction, the social demand for power resources is growing, and the demand for power system is also higher and higher. While meeting the demand and growth of power consumption, maintaining the stability and reliability of power supply has become an important issue for the power industry. The electrical components in our life are almost everywhere, such as the large-scale lighting of shops and buildings, the household appliances in the family, the office in the office, etc