MPPT Tester Unit UT673PV for Solar MPPT Chargers 5–800W, 0–35A

The Unit UT673PV MPPT Tester is a diagnostic instrument for evaluating the performance of solar MPPT charge controllers and PV panels. It is designed to apply controlled loads and measure output behavior across a power range of 5–800 W and a current range of 0–35 A, enabling observation of MPPT tracking, voltage and current response, and stability under realistic operating conditions. The tester helps verify whether a charger follows maximum power point algorithms correctly and assists in identifying mismatches, wiring issues or performance degradation in solar systems.

Advantages

The tester offers precise load application and real-time measurement of voltage and current to replicate typical PV operating conditions. Compact and purpose-built for MPPT evaluation, it supports a wide power span from small to mid-size installations and provides repeatable test conditions for commissioning and troubleshooting. The instrument is suitable for field use and lab checks where controlled, measurable loads are required to validate controller behavior without depending on variable sunlight.

Suitable for

• Commissioning and functional checks of solar MPPT charge controllers
• Verification of PV panel output and MPPT tracking performance
• Maintenance and fault diagnosis of off-grid and hybrid solar systems
• Training, test benches and product evaluation in workshops

Key specifications

• Supported power range: 5–800 W
• Output current range: 0–35 A
• Designed for testing MPPT charge controllers and PV panels
• Measures output voltage and current behavior under load
• Enables observation of MPPT tracking and stability

How to use

Connect the tester between the PV panel (or simulator) and the MPPT charge controller following the controller and tester connection diagrams. Set the desired load or power parameters within the supported ranges and start the test sequence to monitor voltage, current and power behavior. Observe how the controller adjusts its operating point and record any deviations from expected MPPT tracking. Use incremental changes in load or irradiance simulation to assess dynamic response and repeat tests to confirm reproducibility.

Usage recommendations

Use the tester in well-ventilated areas and ensure connections are secure before applying loads. Keep tests within the specified power and current limits, and allow equipment to cool between extended runs. For safety and accurate results, follow the MPPT charger manufacturer’s wiring and operating instructions and perform tests under controlled conditions to avoid transient damage or false readings.