Usually the inverter has a specification for voltage and current range. The panels need to produce voiltage and current in this range. The example panel below is intended for this purpose so each produces voltages from 60 volts with no load and 50 volts with maximum power output, so a maximum current is around 5 amps.
Other ratings are for the maximum voltage (insulation) possibly 800V or more which limits the number of panels that can be in series (maxmum voltage) even if the inverter can use this voltage. A desireable feature is bypass diodes that improve behaviour with shading. Several series strings can be connected in parallel to increase the current according to overall piwer needs.
As inverters may need several hundred volts it is normal to connnect several panels in series to obtain this voltage. The total power is the sum of the power from individual panels. The power is probably around 80% of the specification with full sun, mostly due to heating. Operating temperature is likely 50-60°C. Power is reduced further by the angle to the sun.
Because the current and voltage levels produced by these panels are hazardous, several hundred volts at several amps, the installation should follow some recognized code of practice, and there may be regulations to comply with too. The panel outputs need special circuit breakers and isolators rated for DC like this, and outputs are often not grounded, but the frames and support structure should be bonded to ground for safety. There should be warning signs, and of course weather conditions like high wind must be catered for. Cable from panels to inverter needs to support the maximum voltage and current, being rated for outdoors in the sun and weather, and also provide some specified maximum voltage drop (to moderate losses). Generally all panels should be the same size and real efforts made to eliminate shading which can even damage panels. Ligttning protection could be an issue, and proper ventilation (behind the panels) is essential if they are to work in a suitable temperature range.
The inverter manual in the second link (quoting the smaller model) shows that the voltage range for this unit should not exceed 600V, so an absolute maximum of 10 of the example panels in series. However the working range is 195 to 550V so minimum of 4 or maybe 5 panels and a maximum of 10 panels still holds. The maximum current is 15.4 amps, so up to 3 series strings can be connected in parallel. The maximum AC output to the grid is 2800W, which requires a suitable combination of voltage and current from the panels that exceeds thismm allowing for losses. This shows up as recommended 3070W to produce 2800W, implying efficiency at full power is 91%. With 2 series strings producing up to 10A total, the voltage determining the number of panels to get full output of the inverter is 3070W/10A = 307V. This represents just over 6 panels, so 7 panels per string would be better. This would allow for some additional losses. The inverter can probably deal with more power than is specified, so long as maximum voltage and current limits are not exceeded. Current drawn from panels by the inverter will be adjusted to suit.
These are just off the cuff explanations to help with understanding.