Another critical feature of these inverters is their variable frequency drive (VFD) capability. Instead of simply turning the pump on or off, the inverter adjusts the frequency of the output voltage, thereby controlling the motor speed. In solar applications, this is essential because the available power from the panels varies throughout the day. When solar irradiance is low, the inverter reduces pump speed, matching the motor’s power consumption to the available solar energy. This not only optimizes water flow but also prevents dry running or overheating. Franklin Electric inverters typically operate in a frequency range from 10 Hz to 60 Hz, giving precise control while keeping the motor within safe operating limits.
Drip and sprinkler irrigation for small farms and orchards.
Drinking water supply in remote villages, where the pump fills a storage tank during daylight hours.
Livestock watering in pastoral areas, often combined with a small photovoltaic array.
Fountain or circulation pumps in decorative and aquacultural settings.
Retrofit projects, where an existing AC pump is coupled to a solar array without replacing the moto
In Thailand, the ราคา for a complete solar inverter pump system, including installation, typically follows certain banding. For a small residential or livestock watering system with a pump capacity of around 750 to 1,100 watts, capable of lifting water from a depth of 5 to 20 meters, the total cost can range from 30,000 to 60,000 Thai Baht (approximately 850 to 1,700 US dollars). This includes two or three solar panels of 330–400 watts, a suitable inverter, a surface or small submersible pump, basic mounting structures, cabling, and installation labor. Moving to a mid-range agricultural system with a pump motor of 1.5 to 3 kW, designed to irrigate orchards or vegetable plots, the price escalates to between 80,000 and 150,000 THB (2,200 to 4,200 USD). Such systems might use five to ten solar panels and a more powerful submersible pump capable of producing 5 to 15 cubic meters per hour. For large-scale agricultural or community water supply projects, with pumps rated above 5 kW, the system price can easily exceed 300,000 THB (8,500 USD), sometimes reaching over one million Thai Baht for multi-pump, high-head configurations.
In conclusion, Franklin Electric’s solar pump inverters represent a mature and reliable technology that brings efficient off-grid water pumping to a wide audience. Their advanced MPPT, variable frequency control, robust construction, and integration with the company’s pumps make them a preferred choice for both commercial and small-scale users. As the world moves toward renewable energy solutions, these inverters will continue to play a pivotal role in securing water resources in a sustainable manner.
In terms of environmental impact, the A-Serie contributes to a reduction in greenhouse gas emissions. A typical 5 kW solar pumping system can offset approximately 5–7 tons of CO2 annually compared to diesel-powered systems. Additionally, by enabling efficient irrigation, the system helps conserve water resources when coupled with drip or sprinkler systems. Many modern A-Serie inverters include a built-in timer and flow control capability, which can be used to implement water-efficient schedules, reducing water waste from over-irrigation. This aligns with global initiatives for sustainable agriculture and groundwater managemen
The primary application for the SPN-216T is agricultural irrigation, but it is also found in community water supply, fountain circulators, fish farming aerators, and small sanitation pumping schemes. Because it generates its own electricity, a solar pumping station is free from fuel-price volatility and reduces greenhouse gas emissions by an estimated several tonnes per year, depending on the previous fuel source. The absence of batteries lowers the total cost of ownership and avoids the hazardous waste issue associated with battery disposal. Maintenance is limited to cleaning the solar panels and occasional inspections. When a grid connection or a diesel generator is available, the Apollo SPN-216T can be equipped with an optional AC backup module, allowing the pump to operate during the night or on extremely overcast days. This is particularly useful for applications that require a guaranteed water supply.
Although no two installation sites are identical, the SPN-216T is engineered around a set of core design principles that have made it a trusted choice. First, it integrates a maximum power point tracking (MPPT) controller with a variable-frequency drive (VFD) stage. The MPPT continuously samples the IV curves of the PV source and adjusts the inverter’s input operating point to extract the greatest possible power under every irradiance level, from early morning light to patchy cloudy conditions. The VFD then synthesizes a three-phase sine wave whose frequency and voltage remain within the operating envelope of a standard induction motor. This enables the pump to be started gradually, avoiding the high inrush currents and water hammer that are typical of fixed-speed pumps. Soft starting extends the life of both the motor and the piping network.
If you have any questions relating to where by and how to use my response, you can call us at our page.