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99% MPPT Efficiency

• Advanced maximum power point tracking algorithms
• Real-time solar panel optimization every 2 seconds
• Wide DC input voltage range: 200V-800V
• Automatic voltage adjustment for varying sunlight

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Seamless AC/DC Auto Switching

• Automatic switching between solar DC and grid AC power
• No manual intervention required during cloudy periods
• Continuous water supply 24/7 with hybrid configuration
• Customizable AC/DC priority settings

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GPRS Remote Monitoring

• Mobile app control from anywhere with cellular coverage
• Real-time status: power output, flow rate, fault alerts
• Historical data logging and performance analytics
• SMS alerts for dry-run, overload, or system faults

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Industrial Protection & Automation

• Dry-run protection prevents pump damage from low water
• Auto derating at high temperatures (40°C+ ambient)
• PV over-voltage and over-current protection
• Sunrise auto-start, sunset auto-shutdown

Do I need batteries with the QB100 solar pump inverter?

No batteries are required for standard solar pumping. The QB100 operates directly from solar panel DC input (200V-800V range) with 99% MPPT efficiency. Water is stored in tanks during daylight hours for 24/7 availability. However, if you need nighttime pumping or consistent flow regardless of weather, the AC/DC switching function allows grid power backup—battery storage is optional and typically not cost-effective for irrigation applications.

Can the QB100 work with my existing 3-phase submersible pump?

Yes. The QB100-7R5G-4-PV outputs standard three-phase 380V/400V AC at 50/60Hz, compatible with conventional asynchronous induction motors and submersible pumps up to 7.5kW (10HP). It provides soft-start functionality (ramp-up time adjustable 0-60 seconds) to eliminate inrush current, protecting pump windings and extending motor life by 30-50%. For pumps deeper than 100 meters, the 7.5kW model delivers 150% rated torque (11.25kW) for 60 seconds during startup.

How does the AC/DC auto-switching work in practice?

The QB100 continuously monitors both DC solar input and AC grid input. Priority mode is user-configurable: In “Solar Priority,” the inverter runs on DC while available; when solar drops below operating threshold (e.g., heavy clouds), it seamlessly switches to AC power within 200ms without stopping the pump. In “AC Priority,” grid power is primary with solar as economic supplement. Switching is automatic—no manual intervention required. This ensures zero water flow interruption for critical applications like livestock watering or greenhouse irrigation.

What is the warranty and how does GPRS remote monitoring help?

The QB100 includes a 2-year standard warranty with 5-year extended coverage available. The integrated GPRS module enables: (1) Real-time monitoring via mobile app—view power output, flow rate, fault codes, and historical performance; (2) Remote troubleshooting—our technicians can diagnose 90% of issues without site visits; (3) SMS alerts for dry-run, overload, or PV faults, preventing pump damage; (4) Geographic tracking for multiple farm locations. This reduces maintenance response time from days to hours, critical during planting season.