The LPM-SIW-30kW solar grid-tie inverter is a device capable of converting solar energy into an AC power source. The device is designed based on innovative technologies for creating solar power plants. The presented model has a double degree of protection against voltage surges and impulse interference, provided by double fuses and an SPD (surge protective device). PLEASE NOTE! A grid-tie inverter with a built-in SPD from TM LogicPower is unique equipment. For similar devices presented on the market by other leading brands, the protection unit is purchased separately (average market cost 300 - 400 USD). The operating principle of the LPM-SIW-30kW solar grid-tie inverter is to convert DC from solar panels (voltage range 400-800V) into an AC output voltage of 380V. Three high-speed MPPT trackers operate using the latest power change identification technology (the highest class of measurement accuracy). The device is designed to work with electrical power grids with a frequency of 50 Hz. The design of the LPM-SIW-30kW grid-tie inverter does not provide for the use of electrolytic capacitors. The device's safety margin is calculated for over 25 years. The main advantage of the LPM-SIW-30kW solar grid-tie inverter is its high efficiency (98.4%). The device is capable of uninterrupted operation under both partial and full load. This effect is achieved due to the wide input voltage range, which allows for creating various numbers of series-connected solar panels. Thus, with the help of LPM-SIW-30kW, grid-tie solar power plants with a capacity of 30 kW and more can be created. Also, the manufacturer took care to protect the LPM-SIW-30kW grid-tie inverter from harmful environmental influences (dust, moisture, or small particles) in accordance with the international standard IP65 (one of the most reliable types of protection). The operating temperature range is (-25 ~ +60) °C.