Description
The Qibin QB100-PV Series Solar Pump Inverter is a high-efficiency MPPT variable frequency drive (VFD) that converts DC solar power directly into 3-phase 400V AC output for submersible and surface pumps. Designed for commercial farm irrigation and off-grid water systems, this battery-free solution delivers robust automation while eliminating diesel fuel costs and battery maintenance.
Key Features & Industrial Benefits
⚡ 99% MPPT Efficiency
- Advanced maximum power point tracking algorithm maximizes water flow even under variable cloud cover and partial shading.
- Wide DC input voltage range (250V-900V) compatible with high-voltage solar string configurations.
🔋 AC/DC Hybrid Input
- Seamless switching between DC solar PV and AC grid/generator backup power without manual intervention.
- Ensures continuous water supply 24/7 regardless of weather conditions or solar availability.
🛡️ Industrial Protection Systems
- Dry-run protection: Sensor-free technology automatically detects empty wells and shuts down to prevent motor burnout.
- High-voltage input protection and robust steel housing for harsh agricultural environments.
- Built-in thermal management with intelligent cooling fan control.
🤖 Unattended Automation
- Fully automatic operation: Auto-start at sunrise, auto-sleep at sunset with no operator intervention required.
- Real-time LCD display showing PV voltage, output frequency, power, and fault diagnostics.
- Optional GPRS/Wi-Fi IoT modules for remote monitoring via mobile application.
Technical Specifications (2.2kW – 37kW)
| Model (QB100-PV) | Power (kW) | Output Current (A) | Max DC Input (A) | DC Voltage Range |
|---|---|---|---|---|
| QB100-2R2G-4-PV | 2.2 kW | 5.5 A | 12 A | 250V – 900V DC |
| QB100-7R5G-4-PV | 7.5 kW | 18.5 A | 28 A | 250V – 900V DC |
| QB100-022G-4-PV | 22.0 kW | 45.0 A | 65 A | 250V – 900V DC |
| QB100-037G-4-PV | 37.0 kW | 75.0 A | 110 A | 250V – 900V DC |
Frequently Asked Questions
Do I need batteries to operate this solar pump inverter?
No. The QB100-PV series features a battery-free design that drives the pump motor directly from solar panel DC input. This eliminates battery costs, replacement cycles, and maintenance complexity—making it the most cost-effective solution for agricultural irrigation systems.
Can this inverter work with my existing 3-phase 400V pump?
Yes. The QB100-PV outputs standard 3-phase 380V-440V AC power and is compatible with all standard 3-phase AC induction motors, including submersible borehole pumps and surface centrifugal pumps. Match the inverter kW rating to your pump motor nameplate power for optimal performance.
What happens when solar power is insufficient or at night?
The QB100-PV supports AC/DC hybrid input. When solar irradiance drops below operating thresholds, the system automatically switches to AC grid power or generator backup (if connected). At night, it enters sleep mode and auto-restarts at sunrise—ensuring pump protection while maximizing solar energy utilization.
How does the dry-run protection work without sensors?
The inverter uses sensor-free dry-run detection algorithms that monitor motor current signatures and power consumption patterns. When an empty well is detected (abnormal current draw), the system immediately shuts down to prevent pump damage and automatically retries at programmed intervals until water is available.
What warranty and technical support is provided?
All Qibin QB100-PV inverters include a 5-year industrial warranty and lifetime technical support. Built with advanced SMT production lines and rigorous quality testing, these VFDs are engineered for 10+ year service life in demanding agricultural environments. Installation guidance and parameter configuration support are provided by Ideeishop engineering team.
Configure Your Solar Pumping System
Need help sizing the right inverter for your pump? Our engineers provide free system design and solar array configuration guidance.
📞 +86 18357241165 (WeChat/WhatsApp) | ✉️ sales@ideeishop.com
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