380V 4kW Solar VFD Inverter - DC-to-AC Variable Frequency Drive for Submersible / Deep Well Pump Motors

Overview: This solar-compatible variable frequency drive supports DC (solar PV) or three-phase 380V AC input and is designed specifically to drive inductive loads (motors) such as submersible and deep well pumps. It includes a built-in MPPT controller to optimize photovoltaic output. Read the selection and wiring guidance below before installation to avoid damage from incorrect connections. Type selection notes (important): 1. Carefully review the product instructions and choose the model that matches the required functions and motor power to prevent wiring-related damage. 2. This frequency converter is intended for inductive motor loads only and cannot be used to drive other load types. Please pay attention when purchasing. 3. The total DC input power from the solar array must exceed the photovoltaic converter input power, and the photovoltaic converter power should be greater than or equal to the total load power driven by the converter. 4. Refer to the “best input” DC voltage values in the selection tables to ensure the most efficient operation for both the VFD and motor. You can adjust the DC input voltage by changing the series/parallel configuration of the solar panels. Models and specifications: - 380V range, 0.75KW–2.2KW series Models: WK600D-0007-D3T | WK600D-0015-D3T | WK600D-0022-D3T Input volta: DC 400V-700V (best for 550V-580V) or Three phase 380V±15% 50/60Hz Output volta: AC Three phase 0-380V 0-650Hz Power: 0.75KW/1, 1.5KW/2, 2.2KW/3 Rated current: 2.5A, 3.7A, 5A Shape size (mm): 155*82*135 Packing size (mm): 220*150*130 Weight: 1.2KG - 380V range, 4KW–7.5KW series Models/power: 380V/4KW, 380V/5.5KW, 380V/7.5KW Input volta: DC 400V-700V (best for 550V-580V) or Three phase 380V±15% 50/60Hz Output volta: AC Three phase 0-380V 0-650Hz Power: 4KW/5、5.5KW/8、7.5KW/10 Rated current: 8A, 13A, 16A Shape size (mm): 172*125*165 Packing size (mm): 225*190*230 Weight: 2.5KG - 380V range, 11KW model Power: 380V 11KW Input volta: DC 400V-700V (best for 550V-580V) or Three phase 380V±10% 50/60Hz Output volta: Three phase 0-380V 0-650Hz Power: 11KW/15 Rated current: 25A Shape size (mm): 220*152*179 Packing size (mm): 280*205*245 Weight: 3.5KG Wiring and terminals: - Main circuit terminals R S T are the three-phase AC input (note: for single-phase 220 the terminals are R and T). - P+ and N are the PV DC input terminals. - When using AC input, the DC input must be disconnected; AC and DC must never be powered simultaneously. - For single-phase motor operation set parameters: p0-20=20, P1-00=3 or 4, and wire output V, W to the single-phase 220 motor. - Wiring diagrams are provided with the product (see schematic diagram in the manual). Solar panel configuration recommendations: - For 220V solar inverter: input DC 320V-350V; best working voltage DC320V. - For 380V solar inverter: input DC 540V-580V; best working voltage DC540V. - Recommended total solar panel power: 1.5 times the motor power. Product technology highlights: - Built-in MPPT controller (Maximum Power Point Tracking) continually monitors PV voltage and current to find the maximum VI point, allowing the system to extract maximum power from the solar array and coordinate panel output with the load. - Wide voltage input support: A. 220V photovoltaic converter: if input DC falls below 280V a low-voltage alarm/shutdown will occur; if above 380V the device will automatically suppress over-voltage to avoid shutdown from over-voltage. B. 380V photovoltaic converter: if input DC falls below 380V a low-voltage alarm/shutdown will occur; if above 700V the device will automatically suppress over-voltage to avoid shutdown from over-voltage. Supplementary notes: A. If you need a detailed version of the product manual, contact us and we can send it free of charge. B. If no paper manual is included in the package, this may be due to product changes or upgrades; please contact us for the latest electronic manual. Please ensure you follow the selection and installation guidance exactly to achieve reliable, efficient operation.