VFD500-PV
PV-pump candidate in the broader model table; array Voc, motor current, hybrid supply and field protection are engineered together.
Open technical pageSolar pump drive
INVT GD100-PV and Veikong VFD500-PV: solar-pump drive selection
Compare GD100-PV and VFD500-PV by PV-array window, MPPT, AC/DC hybrid operation, pump protection, motor, remote monitoring and field protection.
Short answer
What does this page recommend?
A technical alternative, not a drop-in substitute
Both series belong to the PV water-pumping class; the right candidate is still determined by array Voc/Vmp calculation, pump-motor current, well flow, hybrid grid/generator behaviour and DC protection design. MPPT percentage alone is not a selection criterion.
Veikong
ProControl products to evaluate first
The exact configuration is selected after engineering review.
VFD510-PV
IP55 field solar-pump candidate; selected only within the published 220 V/380 V model and current limits.
Open technical pageTechnical comparison
Similar requirement, different architecture
The table explains product architectures; it is not an exact order-code selection.
| Validation area | INVT GD100-PV | Veikong / ProControl candidate |
|---|---|---|
| PV array voltage | GD100-PV catalogues publish DC-input and MPPT windows by voltage class; Voc at the coldest site temperature is limiting. | For VFD500-PV, the selected model's minimum operating, MPPT and maximum DC-input rows are used; panel count is calculated against all three limits. |
| MPPT and low light | INVT publishes software MPPT and low-light running/sleep functions for GD100-PV. | VFD500-PV is assessed through MPPT+PID and low-light behaviour; field yield curves are measured instead of using conflicting marketing percentages. |
| AC/DC hybrid supply | GD100-PV offers PV and grid/generator hybrid operation options; transition topology depends on model. | VFD500-PV is assessed with automatic AC/DC switching; how both sources are connected must follow the official diagram. |
| Pump and motor | GD100-PV is sized by pump-motor rated current and voltage class; motor type depends on exact-model documentation. | VFD500-PV publishes IM/PMSM support; pump curve, pipe loss, static head and motor current are selected together. |
| Well/tank protection | GD100-PV publishes dry-run, water-level and related pump protections. | VFD500-PV dry-run, full-tank and low-water functions are tested by sensor type, threshold, delay and automatic restart. |
| Remote monitoring and DC safety | GD100-PV is offered with 4G/Wi-Fi monitoring options; the field installation also requires DC isolation and surge protection. | The VFD500-PV GPRS option is verified per model; DC isolator, fuse, SPD, grounding and cable polarity are engineered separately. |
Suitable scenario
When is it worth evaluating?
- Off-grid agricultural irrigation wells
- Pumps using daytime PV with generator/grid support when needed
- Plants to be recommissioned with dry-run and tank-level sensors
Migration gate
Before making a decision
- Calculate array Voc at the lowest site temperature using the panel temperature coefficient.
- Verify pump Q-H curve, total dynamic head and motor FLA.
- Build the AC/DC hybrid source diagram and automatic transition condition from the manufacturer drawing.
- Size DC isolator, fuse, SPD, grounding and motor cable.
- Test dry well, full tank, low light and sensor failure during wet commissioning.
Frequently asked
Clear answers about alternatives and migration
Is this a drop-in replacement?
No. It is not a direct substitute until exact model, electrical, protocol-role, mechanical, software and certification checks pass.
What should I provide for selection?
The exact existing code, diagram or I/O list, PLC/network data, supply, environment and special functions in use.
Does a drive with a higher stated MPPT percentage always pump more water?
No. Test conditions, PV array, pump curve, cable loss, low-light algorithm and hydraulic system jointly determine daily water volume.
Official manufacturer sources: INVT GD100-PV official product page · INVT GD100-PV official catalogue · Veikong VFD500-PV official product page · Veikong VFD510-PV official product page
This content compares manufacturer-published data under the same project requirement; it does not guarantee direct substitution or project compatibility. ProControl engineering must validate exact model, revision, protocol, electrical, safety and environmental conditions.
Validate the match with an engineer
Share the exact existing code, I/O list, network and environment so we can identify the right solution without assumptions.