Q1 What is a PB-G4 solar pumping inverter?
PB-G4 is a smart hybrid solar pumping inverter that converts DC power from solar panels into AC power to drive water pumps while continuously tracking the maximum power point of the solar array.
Q2 Can PB-G4 work with both solar and grid power?
Yes. PB-G4 supports PV and AC hybrid power input and automatically prioritizes solar energy while using grid or diesel generator power as backup when necessary.
Q3 What is the benefit of the built-in Boost circuit in PB-G4?
The built-in Boost circuit allows PB-G4 to start and operate water pumps with a wider PV voltage range. It improves solar energy utilization during low irradiance conditions, helping the pump run earlier in the morning and later in the afternoon.
Q4 What is the function of the PFC circuit in PB-G4?
The PFC (Power Factor Correction) circuit optimizes AC power utilization by improving the power factor and reducing reactive power losses, resulting in higher energy efficiency and more stable system operation.
Q5 Why are Boost and PFC circuits important in hybrid solar pumping systems?
The Boost circuit enhances solar energy utilization, while the PFC circuit improves AC power efficiency. Together, they help maximize water output, reduce energy costs, and ensure reliable pump operation under varying power conditions.
Q6 How does CRUISE Mode save energy?
CRUISE Mode limits the maximum AC input power and prioritizes solar energy whenever available. This helps reduce grid electricity consumption, lower operating costs, and improve overall energy efficiency in hybrid solar pumping systems.
Q7 What types of water pumps are compatible with PB-G4?
PB-G4 is compatible with submersible pumps, surface pumps and swimming pool pumps using single-phase motors, three-phase induction motors and permanent magnet synchronous motors.
Q8 What is the MPPT efficiency of PB-G4?
PB-G4 uses Solartech's dynamic VI MPPT algorithm and achieves up to 99% MPPT tracking efficiency.
Q9 Does PB-G4 support dry-run protection?
Yes. It supports software-based dry-run protection and can also connect water level switches for additional protection.
Q10 Can PB-G4 be installed outdoors?
Yes. The inverter features a full aluminum enclosure with IP65 protection and is designed for outdoor environments from -20°C to +60°C.
Q11 Does PB-G4 support remote monitoring?
Yes. PB-G4 can be equipped with build-in wireless communication modules or external DM data monitors for remote monitoring & control, fault diagnosis and system management.
Q12 What is the Solar Priority function?
Solar Priority ensures that solar energy is used first whenever available, reducing electricity or fuel consumption from backup power sources.
Q13 Can PB-G4 support PayGo business models?
Yes. PB-G4 offers an optional PayGo module that enables installment payment and pay-as-you-go solar water pumping solutions.
Q14 What applications is PB-G4 suitable for?
PB-G4 is widely used in agricultural irrigation, livestock watering, rural water supply, desert greening, desalination systems and swimming pool circulation applications.
Q15 Does PB-G4 require batteries to operate?
No. PB-G4 is designed to run water pumps directly from solar panels without batteries, reducing system cost and maintenance requirements.
Q16 Why is single-phase 220V to three-phase 380V conversion important for water pumping projects?
Many agricultural and rural locations only have access to single-phase utility power, while most high-performance deep well pumps use three-phase motors. PB-G4 eliminates the need for expensive three-phase grid upgrades by converting 220V single-phase power into three-phase 380V output, reducing project costs and increasing pump compatibility.
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