Erfoud, Morocco / 4kW Pump Test
SP4005 Solar Pump Inverter With Water Still Running at 5 PM in Erfoud
Erfoud has strong sun, but installers still care about late-day water output. The hard part is not only running at noon. A useful solar pump system should keep the pump behavior stable when the light starts to fall.
This Moroccan installation used a SolarSeeker SP4005 5.5kW inverter to drive a 4kW pump. The PV side used 16 pieces of 550W panels in one series string, and the site video notes recorded steady water flow at 5 PM.
Location
Erfoud, Morocco
Model
SP4005
Inverter
380V / 5.5kW / 13A
Pump
4kW
PV array
16 x 550W, 16S
Installer Concern
The local installer wanted fewer settings, not more menu work.
The project shows a common frustration in Morocco: ordinary inverters may run well under strong noon sunlight, then fluctuate after clouds or weaker afternoon light. That forces installers to spend time changing parameters and watching water flow.
Less manual tuning
The installer should not have to chase sunlight changes through repeated parameter edits.
Stable pump frequency
The field goal was to keep the pump running smoothly as available solar power changed.
Dust was part of the site
For southern Morocco, cabinet and inverter protection need to consider dust around the installation.
Field Sequence
Inverter, pump cable, and water outlet in the same afternoon test
The useful detail is the sequence. The SP4005 is wired first, then the pump is tested against the available sunlight, and the water outlet confirms whether the setup is behaving in the field.
MPPT Lesson
Late-day water flow is where poor matching becomes obvious.
At noon, many solar pump systems look comfortable. After 3 PM, available solar power drops and the pump controller has to decide how to keep the motor running without repeated stop-start behavior.
For a 4kW pump in Erfoud, the SP4005 was selected to track changing solar input and keep output stable enough for storage water. The buyer still needs model checking for a different pump, well depth, or panel layout.
Model Handoff
SP4005 is a useful reference when the next pump is close to this 4kW setup
If the pump nameplate, voltage, current, and panel plan are different, treat this page as an example only. Erfoud’s late-day water flow is the result to aim for, not a shortcut around sizing.
Use the main inverter page when the pump voltage, phase, or current still needs to be checked.
SP4005 belongs here when the checked pump is a 380V three-phase match.
Add this check for dusty sites, outdoor wiring, or installations that need easier service access.
FAQ
Questions from the Erfoud installation
What was installed in Erfoud?
The installed system used a SolarSeeker SP4005 inverter, 380V / 5.5kW / 13A output, matched with a 4kW pump and 16 pieces of 550W panels in one series string.
Why is the 5 PM water output important?
Late afternoon output is useful because solar power is weaker than at noon. It helps the installer see whether the inverter and pump can keep working smoothly as light drops.
Can this same panel count be used elsewhere?
Not automatically. SolarSeeker would check the pump nameplate, local sunlight, cable distance, water source, and panel model before confirming the string plan.
Should dusty sites use a cabinet or dust protection?
For southern Morocco and similar dry regions, dust protection and cabinet access should be considered during installation planning.
Need stable water output after noon?
Send the pump nameplate, panel model, water source, and site photos. SolarSeeker will check the inverter range and PV string before quoting.