In general, most AC motors are three-phase 380V and cannot operate without three-phase power. You can only find a way to convert single phase 220V to three phase 380V. However, many equipment on the market with single-phase 220V input, three-phase 380V output are very expensive, so that many users in need take a step back.

KARDA 1-phase 220V to 3-phase 380V VFD (frequency inverter) is a perfect solution to solve this problem. Running a 3-phase 380V AC motor on a 220V single phase voltage for speed control is easy to be done, especially in some areas where there is no 380V power supply. KARDA customized VFDs feature with 1hp to 30hp power rating, built-in RS485 communication interface, IP20 for body, V/F control mode. Buy a best 220v-240v single phase input, 380v/ 400v/ 415v three phase output variable frequency drive at lower price now!

Universal inverter is a power control device that applies the principle of frequency conversion technology and microelectronics technology to control AC motor by changing the frequency of motor working power supply, converting AC power with fixed voltage and frequency into AC power with variable voltage or frequency. The process is to convert the frequency AC power into DC power through rectifier, and then convert the DC power into AC power with controlled frequency and voltage to supply the motor.

Single-phase 220v to three-phase 380v inverter is based on the ordinary inverter to convert the industrial frequency AC 220V power supply into DC power supply through rectifier, and then convert the DC power supply into three-phase 380V AC power supply with controllable frequency and voltage to supply the motor. This way there is no step-up through the transformer, but only through the rectifier step-up circuit, which greatly reduces the volume and weight of the inverter, and the cost is also low.

I. Introduction to the function of KARDA inverter

1, the function of single-phase to three-phase phase change, the function of 220v to 380v voltage boost, the function of frequency conversion;

2, with most of the functions of general-purpose inverter, such as soft start function, speed control function, terminal start/stop forward/reverse switching function, etc.;

3、With motor protection function, over-current over-load over-voltage over-heat short-circuit protection, etc., effectively extending the service life of the equipment.

Second, the use of characteristics

1. Single-phase 220v input for ordinary civilian power grids, with output fully matching 380v three-phase asynchronous motors;

2、Billing according to civil single-phase electricity, good economy;

3, input wide voltage range design, to adapt to the general low utility voltage in some areas of the working environment;

4, the output protection function is perfect, there are overvoltage, overload, over temperature, short circuit, over current and other kinds of protection;

5、Part of the equipment can be matched with sensors and PLC to achieve automatic control and energy-saving purposes, such as temperature-controlled fans, pumps with constant pressure water supply, etc.

III. Realistic problems that can be solved

1, the problem of power supply voltage mismatch, i.e., power supply 220V, equipment power 380V;

2, power phase mismatch problem, i.e., single-phase power supply, three-phase power for equipment;

3, power supply frequency mismatch problem, that is, power 50Hz/60Hz, equipment power 0-400Hz (arbitrary setting).