When evaluating the price of an INVT solar pump inverter, it is crucial to consider the total cost of ownership rather than the upfront purchase price. Solar pump inverters are exposed to harsh outdoor conditions: high temperatures, rain, dust, and electrical surges. If you have any concerns about where and how to use More Bonuses, you can get hold of us at our own website. An inexpensive inverter that fails after two years and causes pump damage can be far more costly to replace than a slightly more robust INVT unit that operates for ten years. INVT inverters are designed with high-quality aluminum alloy housings and conformal-coated PCBs (Printed Circuit Boards) to resist moisture and corrosion. The availability of local service centers means that even if a fault occurs, repair is quicker than shipping a unit back to the manufacturer. Therefore, the slightly higher price of an INVT product compared to no-name brands is justified by its longer service life and lower lifetime maintenance costs.
Protection Functions
Robust protection features are essential for solar pumping systems, and the manual highlights the inverter’s built-in safeguards: overcurrent, overvoltage, undervoltage, overload, short-circuit, reverse polarity, over-temperature, and dry-run protection. When a fault occurs, the inverter stops the pump and displays a specific error code on the LCD. The manual includes a fault code lookup table that helps users identify the cause of each error, such as "E01" for overcurrent or "E05" for MPPT fault. It explains the automatic restart behavior: for some faults, the inverter will attempt a restart after a configurable delay, while for serious alarms it requires a manual reset. The inverter also has a built-in surge protector for the DC side and optional surge protection for the AC side.
Furthermore, the price of an INVT solar pump inverter in Thailand is significantly affected by import and logistics policies. Most INVT inverters are manufactured in China and imported into Thailand. The Thai government imposes import duties on such electronics, and the VAT (7%) is also added. Additionally, transportation and inventory holding costs are passed on to the customer. Bulk purchases or direct factory orders can reduce the unit price, but for individual farmers or small businesses, buying through a local reseller is standard. Some Thai distributors may bundle the inverter with a pump, solar panels, and installation services, offering a complete package at a negotiated price. In these situations, the inverter itself might appear to have a lower or higher price depending on how the distributor allocates the total system cost.
Another economic angle is the payback period. The combination of INVT solar pump inverter costs and solar panels leads to an initial investment that can be recovered within 2 to 4 years in Thailand, given the high solar insolation and the escalating cost of grid electricity or diesel for pumping. For example, a diesel-powered pump used for irrigation in rural Thailand might consume 2,000 liters of diesel annually, costing around 60,000 to 80,000 THB. In contrast, a solar-powered system with an INVT inverter and a 3 kW pump can be installed for about 80,000 to 120,000 THB. After three years, the solar system pays for itself and then provides nearly free pumping for the next 15-20 years. Thus, the inverter's price is a small fraction of the overall savings achieved. This economic rationale is driving the growing demand for solar pumping solutions, and INVT’s competitive pricing accelerates the adoption.
Solar PV panels: Provide DC power. A typical small-scale system uses 300–500 W of panels.
MPPT charge controller / DC-DC boost converter: Adjusts the operating point of the PV array using a MOSFET switch and inductor. The Arduino outputs a PWM signal to regulate the duty cycle for impedance matching.
Voltage and current sensors: Hall-effect sensors (e.g., ACS712) and voltage dividers feed analog signals to the Arduino’s ADC pins.
Three-phase inverter bridge: Six MOSFETs or IGBTs arranged in a three-phase bridge. Gate driver circuits (e.g., IR2110) amplify the Arduino’s PWM signals to drive the switches.
Induction or PMSM pump motor: The load. For a three-phase induction motor, a variable frequency drive (VFD) is created using a V/f control scheme.
Arduino board: An Arduino Mega or Due is preferred for its multiple PWM channels and higher clock spee
In terms of installation and commissioning, INVT solar pump inverters are designed to be user-friendly. They come with preset parameters for different pump types, and an auto-tuning function can identify the motor characteristics to optimize performance. The user interface is intuitive, often with multi-language support, enabling local technicians to set up the system without specialized training. INVT also provides comprehensive technical documentation, including manuals, wiring diagrams, and software tools. The global presence of INVT with branch offices and service networks further assures customers of after-sales support, spare parts availability, and warranty services.
Protection Functions
Robust protection features are essential for solar pumping systems, and the manual highlights the inverter’s built-in safeguards: overcurrent, overvoltage, undervoltage, overload, short-circuit, reverse polarity, over-temperature, and dry-run protection. When a fault occurs, the inverter stops the pump and displays a specific error code on the LCD. The manual includes a fault code lookup table that helps users identify the cause of each error, such as "E01" for overcurrent or "E05" for MPPT fault. It explains the automatic restart behavior: for some faults, the inverter will attempt a restart after a configurable delay, while for serious alarms it requires a manual reset. The inverter also has a built-in surge protector for the DC side and optional surge protection for the AC side.
Furthermore, the price of an INVT solar pump inverter in Thailand is significantly affected by import and logistics policies. Most INVT inverters are manufactured in China and imported into Thailand. The Thai government imposes import duties on such electronics, and the VAT (7%) is also added. Additionally, transportation and inventory holding costs are passed on to the customer. Bulk purchases or direct factory orders can reduce the unit price, but for individual farmers or small businesses, buying through a local reseller is standard. Some Thai distributors may bundle the inverter with a pump, solar panels, and installation services, offering a complete package at a negotiated price. In these situations, the inverter itself might appear to have a lower or higher price depending on how the distributor allocates the total system cost.
Another economic angle is the payback period. The combination of INVT solar pump inverter costs and solar panels leads to an initial investment that can be recovered within 2 to 4 years in Thailand, given the high solar insolation and the escalating cost of grid electricity or diesel for pumping. For example, a diesel-powered pump used for irrigation in rural Thailand might consume 2,000 liters of diesel annually, costing around 60,000 to 80,000 THB. In contrast, a solar-powered system with an INVT inverter and a 3 kW pump can be installed for about 80,000 to 120,000 THB. After three years, the solar system pays for itself and then provides nearly free pumping for the next 15-20 years. Thus, the inverter's price is a small fraction of the overall savings achieved. This economic rationale is driving the growing demand for solar pumping solutions, and INVT’s competitive pricing accelerates the adoption.
Solar PV panels: Provide DC power. A typical small-scale system uses 300–500 W of panels.
MPPT charge controller / DC-DC boost converter: Adjusts the operating point of the PV array using a MOSFET switch and inductor. The Arduino outputs a PWM signal to regulate the duty cycle for impedance matching.
Voltage and current sensors: Hall-effect sensors (e.g., ACS712) and voltage dividers feed analog signals to the Arduino’s ADC pins.
Three-phase inverter bridge: Six MOSFETs or IGBTs arranged in a three-phase bridge. Gate driver circuits (e.g., IR2110) amplify the Arduino’s PWM signals to drive the switches.
Induction or PMSM pump motor: The load. For a three-phase induction motor, a variable frequency drive (VFD) is created using a V/f control scheme.
Arduino board: An Arduino Mega or Due is preferred for its multiple PWM channels and higher clock spee
In terms of installation and commissioning, INVT solar pump inverters are designed to be user-friendly. They come with preset parameters for different pump types, and an auto-tuning function can identify the motor characteristics to optimize performance. The user interface is intuitive, often with multi-language support, enabling local technicians to set up the system without specialized training. INVT also provides comprehensive technical documentation, including manuals, wiring diagrams, and software tools. The global presence of INVT with branch offices and service networks further assures customers of after-sales support, spare parts availability, and warranty services.
