Key Features of the 118 Solar Pump Inverter

Technical Specifications – 118 Series Model Range

118-D3 Series – 220V Three-Phase Output

Solar DC input: 150–450 VDC (recommended Voc 360–430 V) | Grid AC input: 1PH/3PH 220–240 VAC | Output: 3PH 220–240 VAC

118-D5 Series – 380V Three-Phase Output

Solar DC input: 250–900 VDC (recommended Voc 620–850 V) | Grid AC input: 3PH 380–480 VAC | Output: 3PH 380–460 VAC

118-T3 Series – 380V High-Power Three-Phase

Solar DC input: 350–900 VDC (recommended Voc 620–850 V) | Grid AC input: 3PH 380–480 VAC | Output: 3PH 380–440 VAC

118-SS2 Series – 220V Single-Phase Output

Solar DC input: 150–450 VDC (recommended Voc 360–430 V) | Grid AC input: 1PH 220–240 VAC | Output: 1PH 220–240 VAC

Ideal Applications

• Agricultural Irrigation: Drip and sprinkler systems for farms, orchards and greenhouses
• Solar Borehole Pumping: Deep-well and submersible pumps for off-grid water extraction
• Livestock Watering: Automatic tank filling with water-full detection for ranches
• Rural & Village Water Supply: Constant-pressure water delivery with PID control
• Water Transfer & Storage: Daytime solar pumping to storage tanks for night use

Frequently Asked Questions

Does the 118 solar pump inverter require batteries?

No. The 118 series pumps water directly from the solar array without batteries. When sunlight is insufficient, the AC & DC hybrid input lets a grid or generator supply take over, so pumping continues day and night.

Can the 118 series run single-phase pumps?

Yes. The 118-SS2 sub-series outputs single-phase 220–240V for single-phase pumps from 0.75 to 15 kW. The D3, D5 and T3 sub-series drive three-phase pumps — D3 at 220–240V output and D5/T3 at 380V-class output up to 110 kW.

How do I size the solar panels for my pump?

Match two numbers from the specification tables: the recommended solar input power (slightly above pump power) and the array open-circuit voltage (Voc) — 360–430V for 220V models (D3/SS2) and 620–850V for 380V models (D5/T3). Staying inside the recommended Voc window keeps MPPT operation stable.

What protection functions are included?

The 118 series includes a dry-run protection sensor input (stops the pump when the well is dry), water-full detection (automatic stop and reset when the storage tank is full), plus over-voltage, under-voltage, over-current, overload, overheat and phase-loss protection. RS485 Modbus allows remote monitoring of the pumping system.

Is the 118 series in stock and how do I order?

Standard models can be ordered directly at the listed price on this page. For bulk orders, project configurations, or help choosing between the D3 / D5 / T3 / SS2 sub-series, contact our engineering team — we respond within one working day with sizing and a quotation.