Description
QB100-PV S2 Solar Pump Inverter
Single-Phase to Three-Phase Converter | 0.75kW – 5.5kW | 220V MPPT VFD
Transform Single-Phase Power into Three-Phase Performance
The QB100-PV S2 Series is a high-efficiency MPPT solar pump inverter with integrated phase conversion technology that transforms standard single-phase 220V input into robust three-phase 220V output—enabling you to power industrial 3-phase pumps from residential single-phase grid or solar arrays. Featuring 99% MPPT efficiency, seamless AC/DC hybrid switching, and sensor-free dry-run protection, this VFD eliminates the need for expensive 3-phase infrastructure upgrades while delivering high-torque performance for demanding agricultural and commercial irrigation systems.
Exclusive S2 Advantage: Optimized for Single-Phase 220V Input to Three-Phase 220V Output, providing seamless phase conversion and maximum efficiency for industrial pump motors without utility 3-phase service.
Key Industrial Features
⚡ 99% MPPT Efficiency
- Advanced maximum power point tracking extracts peak energy from solar arrays even in variable light conditions.
- Wide DC input range (180V-450V) accommodates standard residential solar configurations.
- Battery-free direct drive eliminates storage costs and maximizes system efficiency.
🔄 1PH to 3PH Phase Conversion
- Converts standard single-phase 220V input into high-torque three-phase 220V output for industrial pumps.
- Eliminates expensive utility 3-phase service installation and monthly demand charges.
- Maintains full motor performance and efficiency comparable to native 3-phase supply.
🛡️ Industrial Protection Systems
- Sensor-free dry-run protection: Intelligent current monitoring detects empty wells and prevents pump burnout automatically.
- Soft-start technology eliminates high inrush current, protecting motor windings and extending pump lifespan.
- Overvoltage, undervoltage, and thermal overload protection for harsh agricultural environments.
🔋 Seamless AC/DC Hybrid Input
- Automatic switching between solar DC and single-phase 220V AC grid/generator backup.
- Ensures 24/7 pumping capability regardless of weather or solar availability.
- Unattended operation with intelligent sunrise auto-start and sunset auto-sleep.
- Optional GPRS/Wi-Fi modules for remote monitoring and control via smartphone app.
Technical Specifications (S2 Series)
| Model Number | Power (kW) | Output Current (A) | Max DC Input (V) | Input/Output Phase |
|---|---|---|---|---|
| QB100-0R7G-S2-PV | 0.75 kW | 4.5 A | 450V | 1PH 220V → 3PH 220V |
| QB100-1R5G-S2-PV | 1.5 kW | 7.0 A | 450V | 1PH 220V → 3PH 220V |
| QB100-2R2G-S2-PV | 2.2 kW | 10.0 A | 450V | 1PH 220V → 3PH 220V |
| QB100-004G-S2-PV | 4.0 kW | 16.0 A | 450V | 1PH 220V → 3PH 220V |
| QB100-005G-S2-PV | 5.5 kW | 22.0 A | 450V | 1PH 220V → 3PH 220V |
Why Choose QB100-PV S2?
💰 Infrastructure Cost Elimination
Avoid expensive 3-phase utility service installation ($5,000-$15,000+). Run 3-phase pumps from existing single-phase supply.
⛽ Diesel Replacement
Eliminate fuel costs and engine maintenance. Solar-powered irrigation with grid backup for 24/7 reliability.
🔧 Universal Compatibility
Works with any standard 3-phase 220V induction motor—submersible borehole pumps, surface centrifugal pumps, and irrigation systems.
🏆 5-Year Industrial Warranty
Engineered for 10+ year service life with advanced SMT manufacturing and comprehensive technical support.
Frequently Asked Questions
Can I run a 3-phase 220V pump from my single-phase 220V house supply?
Yes. The QB100-PV S2 is specifically engineered as a phase converter that transforms standard single-phase 220V input into high-torque three-phase 220V output. This eliminates the need for expensive 3-phase utility service installation (typically $5,000-$15,000+) and monthly demand charges. The inverter maintains full 3-phase motor performance while operating from residential or light commercial single-phase infrastructure—ideal for farms and remote locations without 3-phase grid access.
Does this system require batteries to operate?
No. The QB100-PV S2 is a direct-drive battery-free VFD that powers your 3-phase pump directly from solar panels during daylight hours. This eliminates battery purchase costs, replacement cycles (every 5-7 years), and maintenance complexity. For nighttime or low-solar operation, the inverter seamlessly switches to single-phase 220V AC grid or generator input—providing 24/7 reliability without energy storage overhead.
Will the inverter automatically switch to grid power when it rains or at night?
Yes. The QB100-PV S2 features seamless AC/DC hybrid switching that automatically detects solar power availability and transitions to single-phase 220V AC grid or generator backup when irradiance drops below operating thresholds (cloudy weather, rain, nighttime). The switch occurs without manual intervention and maintains consistent water flow—ensuring your irrigation schedule remains on track regardless of weather conditions while maximizing solar energy utilization when available.
Is this compatible with my existing 3-phase 220V submersible pump?
Absolutely. The S2 series outputs standard 3-phase 220V AC power (220V between phases) that is fully compatible with all industrial 3-phase 220V induction motors, including submersible borehole pumps, surface centrifugal pumps, and turbine pumps. Match the inverter kW rating to your pump motor nameplate power (e.g., 2.2kW inverter for 2.2kW or 2HP pump). The phase conversion occurs internally—your pump receives pure 3-phase power identical to utility 3-phase supply.
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