Inverter is a device that converts DC electric energy into alternating current (generally a sine wave of 220 V and 50 Hz). This is contrary to the function of rectifier, which converts AC power into DC power. The inverter consists of an inverter bridge, a control unit and a filter circuit. Widely used in air conditioners, power tools, computers, televisions, washing machines, refrigerators, massagers and other electrical appliances.
When selecting and using the frequency converter, the following points must be noted:
1) DC voltage must match;
Each inverter has a nominal voltage, such as 12V and 24V.
It is required that the selected battery voltage must be consistent with the nominal DC input voltage of the inverter. For example, 12V inverter must choose 12V battery.
2) The output power of inverter must be greater than the maximum power of electrical appliances;
In particular, some equipment with high starting energy demand, such as motors and air conditioners, need to leave extra power margin.
3) The positive and negative electrodes must be connected correctly.
The DC voltage connected to the inverter is marked with positive and negative poles. Generally speaking, red is the positive pole (+) and black is the negative pole (-). The battery is also marked with positive and negative poles, with red as the positive pole (+) and black as the negative pole (-). When connecting, be sure to connect the positive electrode (red to red) and the negative electrode (black to black). The diameter of the connecting line must be thick enough to minimize the length of the connecting line.
4) The charging process and the inverter process cannot be carried out at the same time, so as not to damage the equipment and cause failure.
5) The inverter housing should be properly grounded to avoid personal injury caused by leakage.
6) In order to avoid electric shock injury, non-professionals are forbidden to disassemble, repair and modify the frequency converter.