How Many Solar Panels Can Be Connected To Solar Inverter?

As the core equipment of the solar power system, the solar inverter converts the DC power generated by the solar panels and the DC power of the battery into AC power for the load equipment. So how many solar panels can be connected to the solar inverter? The number of solar panels connected to the solar inverter is not determined arbitrarily. It involves the specifications of the inverter and solar panels, such as the solar input power, voltage range, current of the solar inverter, and the total power, total voltage, total current of the solar panel combination, etc. to determine the number of solar panels connected to the load solar inverter.

The parameter value of the solar inverter has maximum solar input power value. The total power connected to the solar panel is calculated with reference to the maximum solar input power value of the solar inverter. The parameters of this inverter are different for each manufacturer. The specific standard is based on the manual of the inverter. The following is an example for everyone to use as reference for calculation.

For example, if the rated power of solar inverter is 5000W, its maximum solar input power value is 5600W, then the total power connected to the solar panels cannot exceed the maximum solar input power value of 5600W. Taking single solar panel as an example, the power of each solar panel is 350W. Through simple calculation, 5600W÷350W=16 panels. Therefore 5000W solar inverter can support maximum of 16 solar panels rated at 350W each.

However, in addition to the maximum solar input power value, the solar inverter must also consider the solar input voltage range and solar input current. In addition to the power value, the solar panel must also refer to the voltage and current values of the solar panel. The output current of the solar panel cannot be ignored. The solar inverter has voltage range and maximum input current limit. The total voltage and total current generated by the connected solar panel combination must not exceed the upper limit of the inverter parameter. Otherwise, the inverter may not work properly and may even cause damage to the equipment.

Taking the Xindun HFP hybrid inverter as an example, its rated power is 6300W, the maximum solar input power is 7000W, the voltage range is 80V-450V, and the maximum solar input current is 27A; the solar panel is 350W, the voltage value is 36V, and the current value is 8A.

If we simply calculate the power, 7000W÷350W=20 panels, meaning a maximum of 20 PV panels rated at 350W each could theoretically be connected. However, considering the voltage range of the inverter is 450V and the voltage of the solar panel is 36V, the total voltage of 20 solar panels in series is 36V*20=720V, and the maximum solar input voltage of the solar inverter is 450V. Therefore, the total voltage of the 20 solar panels in series has exceeded the upper limit of the solar input voltage of the inverter, and connecting them will cause damage to the equipment. The maximum solar input voltage of the inverter should be used as reference for calculation, 450V÷36V=12.5, rounded down to 12 panels, 12*36V=432V, the total voltage obtained by connecting solar panels in series is within the solar input voltage range of the solar inverter, and the inverter can work.

In practical applications, solar panels can be connected in series, in parallel, or in a combination of series and parallel. In parallel, the total voltage remains unchanged but the current increases. The total current value needs to take into account the maximum solar input current value of the inverter. The total current generated by the parallel connection of solar panels cannot exceed the maximum solar input current value of the solar inverter.

Therefore, when connecting solar panels in series, the total voltage must be considered, while in parallel, the total current must also be taken into account. Taking the Xindun HFP solar inverter 6300W as an example, the inverter can support maximum of 12 solar panels with power rating of 350W each. However, to ensure the overall stability and efficiency of the system, it is advisable to avoid operating the inverter at full load or overload for extended periods. Thus, it is recommended to connect 10 solar panels of 350W each. The above calculation is for reference only, and the number of solar panels with different power ratings can be determined using the same method.

Our HFP hybrid solar inverter that supports off grid, on grid and hybrid modes. It has an ultra-wide MPPT tracking range of 500V, and supports working without batteries and selling excess electricity back to the grid, achieving power self-sufficiency. The inverter power range is from 1.3KW to 12.3KW.

1.3KW max solar input power is 2000W;

2.3KW max solar input power is 3000W;

3.3KW and 4.3KW max solar input power is 5000W;

6.3KW max solar input power is 7000W;

8.3KW max solar input power is 4500W*2;

10.3KW max solar input power is 6000W*2;

12.3KW max solar input power is 6000W*2;

How many solar panels can be connected to solar inverter is question that requires comprehensive consideration of multiple factors. When configuring the number of solar panels, we need to perform detailed calculations and analyses based on the inverter's maximum solar input power, solar input voltage range, maximum solar input current, as well as the solar panel's power, voltage and current, system configuration, and the series and parallel connection method of the solar panels. Only in this way can we ensure the stability and efficiency of the solar inverter.

When purchasing solar inverter, users can consult the sales to learn about the specific parameters of the product. Generally, when configuring solar panels for solar inverters, the sales can recommend solutions to you based on your needs, combined with comprehensive factors such as the power specifications, area requirements, and price costs of the solar panels. If you want to learn more about Xindun solar inverters or purchase them, you can leave your information and needs in the customer service window at the bottom of the website (https://www.xinduninverter.com/), and Xindun will contact you as soon as possible during working hours.