2.2–37 kW
Field-ready range
Compact units with enclosure options up to IP66 for demanding installations.
Solar pump inverters
Renewable Solar Inverter
GRUNDFOS RSI
Intelligent solar drive for large three-phase pumps, from remote water supply to high-flow irrigation.
- 1.5–250 kW
- AC + DC
- IP21 · IP54 · IP66
From sunlight to useful water
RSI converts photovoltaic DC power into controlled three-phase AC power and continuously adapts pump speed to the available solar energy.
- PV arraySolar DC source
- RSI driveMPPT and motor control
- Three-phase pumpSubmersible or dry-installed
- Water deliveredTank, irrigation or network
One platform, two installation scales
Select the enclosure and power class to match the site. Availability of IP ratings depends on the RSI size and version.
45–250 kW
High-power range
Cabinet-oriented solutions for high-flow and high-head water projects.
New or existing
Flexible integration
Works with VFD-compatible motors and can use the grid or a generator as backup.
RSI 380–415 V model selection
Three-phase standard selection. The official RSI family starts at 1.5 kW; the models listed here start at 2.2 kW.
| Model | Power | Rated current | Supply | Article code |
|---|---|---|---|---|
| RSI 2.2 | 2.2 kW | 5.6 A | 3 × 380–415 V | 99044348 |
| RSI 3.0 | 3 kW | 8.0 A | 3 × 380–415 V | 99044349 |
| RSI 4.0 | 4 kW | 9.6 A | 3 × 380–415 V | 99044350 |
| RSI 5.5 | 5.5 kW | 12 A | 3 × 380–415 V | 99044351 |
| RSI 7.5 | 7.5 kW | 16 A | 3 × 380–415 V | 99044352 |
| RSI 11 | 11 kW | 23 A | 3 × 380–415 V | 99044363 |
| RSI 15 | 15 kW | 31 A | 3 × 380–415 V | 99044364 |
| RSI 18.5 | 18.5 kW | 38 A | 3 × 380–415 V | 99044365 |
| RSI 22 | 22 kW | 46 A | 3 × 380–415 V | 99044366 |
| RSI 30 | 30 kW | 61 A | 3 × 380–415 V | 99044367 |
| RSI 37 | 37 kW | 72 A | 3 × 380–415 V | 99044368 |
| RSI 45 | 45 kW | 87 A | 3 × 380–415 V | 99648886 |
| RSI 55 | 55 kW | 105 A | 3 × 380–415 V | 99648887 |
| RSI 110 | 110 kW | 205 A | 3 × 380–415 V | 99648888 |
| RSI 132 | 132 kW | 261 A | 3 × 380–415 V | 99648889 |
| RSI 160 | 160 kW | 310 A | 3 × 380–415 V | 99648890 |
| RSI 200 | 200 kW | 385 A | 3 × 380–415 V | 99648891 |
| RSI 250 | 250 kW | 400 A | 3 × 380–415 V | 99648892 |
Control engineered for solar pumping
Four MPPT algorithms
Continuously optimises available PV power as irradiation and operating conditions change.
Grundfos setup wizard
The built-in motor library shortens commissioning to a guided parameter selection.
AC and DC compatible
A grid or generator supply can provide backup through a correctly designed changeover system.
Enclosures up to IP66
IP21, IP54 and IP66 versions cover cabinet, protected and demanding field installations.
No-load protection
Stops the motor output and reports a fault when a no-load condition is detected.
Detachable control panel
Magnetic operating panel; the drive continues with its last saved configuration when removed.
RSI
Key engineering data
- Ambient temperature
- -10 to 60 °C
- Maximum relative humidity
- 100%
- Minimum / recommended MPP voltage
- 450 VDC / 530–615 VDC
- Maximum DC input voltage
- 800 VDC
- AC input / rated output
- 380–480 VAC / 380–440 VAC
- Output frequency
- 5–160 Hz
- Phases
- 3
Compatible Grundfos pump families
CR · SP · NB · NK · MTR · CM · TP, provided the motor is suitable for variable-frequency operation.
50 / 60 Hz · 3 × 380 V or 3 × 220 V · VFD-ready motor
Connections and standard I/O
Never supply AC and DC to RSI simultaneously unless the installation includes PowerAdapt. Use an interlocked changeover switch and follow the installation manual.
Solar water
Store water, not electricity
Solar water production changes throughout the day. A storage tank absorbs the afternoon surplus and maintains useful supply in the morning and evening. A combiner box groups the PV strings before the power input reaches RSI.
Size a system in LE LABWorldwide B2B export
Request a project quotationPreparing an RSI pumping project?
Send us the pump duty point, site voltage, location and available PV information. We will help select the equipment and prepare an export quotation.
Technical source: Grundfos RSI 1.5–250 kW official documentation. Article codes: SINES / Grundfos documentation.