Three phase 20KVA inverter |20KVA three-phase inverter | 20KW inverter | eight Power Supply Manufacturer * * *: Guojia Power - famous trademark,
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1： Introduction to high-power power frequency inverter GJ series pure sine wave inverter power supply is specially designed for power, communication systems and other Electrical and industrial equipment design, equipment that converts direct current (DC48-480V, choose one voltage level) into pure sine wave alternating current (AC220V or AC380V); It is also a way to connect the power supply and Battery It is a conversion device that can convert the electrical energy of 20% into uninterrupted and purified AC electrical energy, which is used to provide computers and other electrical equipment with usable continuous AC power supply in case of instability and power failure of the mains. It can also prevent various distortions of public power, such as power supply voltage drop, surge voltage, peak voltage and broadcast frequency interference.
2： The working mode of high-power power frequency inverter is applicable to the situations where the DC voltage is 110V, 220V, or other DC voltage ranges from 48V to 480V;
AC voltage can be single-phase 220V or three-phase 380V; There are three principle models as follows:
1: Online working mode
<1> When the grid mains power is normal, the AC mains power is converted into pure AC power through inverter after rectification and filtering to supply power to the back-end load;
<2> When the mains supply of the power grid is abnormal or cut off, the inverter will be immediately converted into Other equipment The DC power provided is inverted into pure AC power through the inverter to supply power to the back-end load; The time of this conversion process is 0 to ensure uninterrupted power supply; When the mains power of the power grid returns to normal, the inverter will automatically switch to the mains power supply mode;
<3> When the inverter or internal line has a solid fault, the static transfer switch will be switched to the automatic bypass, and the bypass mains will supply power directly; The switching time is short, generally less than 4ms, to ensure uninterrupted power supply of equipment; When the main circuit returns to normal, the equipment will automatically switch to the main circuit for power supply;
2: Backup working mode
<1> When the grid mains power is normal, the AC mains power directly supplies power to the load through the static transfer switch;
<2> When the grid mains power is abnormal or cut off, the inverter will immediately convert the DC power provided by the DC panel or other equipment into pure AC power through the inverter to supply power to the back-end load; This conversion process takes a short time, about less than 4ms, to ensure uninterrupted power supply; When the mains power of the power grid returns to normal, the inverter will automatically switch to the direct mains power supply mode;
3: Pure inverter working mode
The inverter only converts DC power into AC power for AC load power or battery activation discharge;
3： Features of high-power power frequency inverter
● Completely isolated inverter technology, output noise free sinusoidal AC voltage
● The inverter unit adopts advanced SPWM technology, with pure waveform
● Unique dynamic current loop control technology ensures reliable operation of inverter
● Strong overload capacity, capable of withstanding full load startup of computer
● High power bypass switch, which can be powered by the bypass in case of overload
● It has protection functions such as input overvoltage, undervoltage, output overvoltage, undervoltage, over temperature, short circuit, etc
● The front panel of inverter has LCD/LED display mode, and the status is clear at a glance
4： Technical parameters of power frequency inverter
