The CHF200-018-4-PV Solar Pump Inverter is a heavy-duty 18.5kW solar water pumping VFD controller available at Maxell Power, engineered to drive large-scale agricultural tube wells, high-capacity irrigation networks, and commercial water supply systems. Operating on advanced solar energy management technology, it pairs with high-output solar panel arrays to efficiently power submersible, asynchronous, synchronous, and single-phase motor pumps. For slightly smaller water pumping projects, compare this unit with our CHF200-015-4-PV 15kW Solar Inverter or explore our full range of solar pump inverters.

Equipped with an optimal MPPT voltage range of 300V–750V and a maximum DC input voltage of 900V, the CHF200-018-4-PV maximizes power conversion efficiency from solar panels during fluctuating sunlight conditions. It features full automated operation, including auto-sleep mode during weak light or full tank levels and auto-wake capability when sunlight recovers or water supply is needed. Designed for multi-source versatility in modern solar houses and agricultural farms, it supports hybrid AC inputs (3PH 380V-440V / 220V-240V / 1PH 220V-240V) for seamless switching between solar energy, backup generators, and utility grid power. For larger commercial installations, see our CHF200-022-4-PV 22kW Inverter or contact our technical engineering team for custom solar energy configurations.

Frequently Asked Questions

What pump motor size can the CHF200-018-4-PV solar inverter run?

The CHF200-018-4-PV is rated for 18.5kW (approx. 25 HP) water pumps, making it ideal for deep agricultural tube wells, heavy-duty irrigation, and high-volume commercial water systems.

What is the recommended MPPT solar array voltage for this 18.5kW controller?

The unit operates best within an MPPT voltage range of 300V to 750V, with a recommended operating DC input voltage of 550V and a 900V maximum DC limit.

Can the CHF200-018-4-PV switch to generator or utility grid power?

Yes, it features hybrid AC input support (3PH 380V-440V / 220V-240V / 1PH 220V-240V), enabling smooth switching to utility power or backup generators when solar energy is unavailable.

How does the auto run/stop water level monitoring work?

The controller automatically enters sleep mode when sunlight intensity drops or when the storage tank is full, and automatically restarts when solar radiation recovers or the water level drops.

How does the 18.5kW model compare to neighboring models like 15kW or 22kW?

While the 18.5kW model drives 25HP pumps, smaller needs can be met by the CHF200-015-4-PV 15kW, and higher power requirements can step up to the CHF200-022-4-PV 22kW.