VEICHI SI21 4kW Solar Pump Inverter 250-750VDC
VEICHI SI21 4kW Solar Pump Inverter 250-750VDC
VEICHI SI21 4kW Solar Pump Inverter is the 250-750VDC D5 configuration for photovoltaic water pumping. It combines solar pump control with high-efficiency MPPT for boreholes, irrigation and remote water systems.
Key Features
- MPPT solar-power tracking for photovoltaic water pumping.
- Variable-frequency control for compatible pump motors.
- Pump functions include dormancy, dry-run, low-speed and water-level control where configured.
- Supports compatible asynchronous and permanent-magnet motors.
- Optional IoT hardware and monitoring functions depend on the ordered configuration.
Technical Specifications
| Rated power | 4kW |
|---|---|
| Rated PV range | 250-750VDC |
| VEICHI D5 family Voc range | up to 250-850VDC |
| AC input | 3-phase 380-415VAC, 50/60Hz |
| Output | up to 460VAC, 0-599Hz |
| MPPT efficiency | up to 99.8% |
| Motor support | asynchronous, PMSM and synchronous-reluctance motor control |
| Protection | overload, short circuit, over-temperature, under/over-voltage, low-speed and pump protection functions |
| Manufacturer | Veichi |
| MPPT efficiency, series specification | Up to 99.8% |
| Application | Solar / hybrid water pumping |
| Output frequency | 0–599 Hz |
| Store SKU | V-Si21-4-250-750VDC |
Typical Applications
Solar boreholes, irrigation, livestock watering, reservoirs and rural or remote water-supply systems.
Technical Resources
Browse our Technical Resources & Manuals page for manufacturer documents and information on requesting the cut sheet, datasheet or manual for your exact model.
- VEICHI SI21 product information and datasheet
- VEICHI SI21 simplified user manual
- VEICHI solar pump technical downloads
Use the documentation for the exact ordered model. Family manuals may cover options and ratings that are not included with this unit.
Selection & Compatibility
- Final PV-array and motor compatibility must be checked against the supplied unit and current manufacturer documentation. Not sure of the right size? Contact Softcore Group Industrial Solutions for a quotation.
- Match pump voltage/current and duty to the inverter. Check PV Voc at the lowest site temperature, operating voltage, isolation, protection and cable requirements against the exact manual.
Availability & Ordering
Special-order product. Availability and delivery lead time are confirmed on quotation.
Supplied by Softcore Group Industrial Solutions. Request a quotation with the model number and application requirements. Programming, installation and commissioning are included only where expressly quoted.