Photovoltaic testing requires multiple devices to ensure the performance, safety, and reliability of photovoltaic modules, inverters, support systems, and the entire photovoltaic power plant. The following are commonly used equipment and their uses in photovoltaic testing:

1. Photovoltaic module testing equipment
IV Curve Tracer:
Used to measure the current voltage (I-V) characteristic curve of photovoltaic modules, evaluate parameters such as maximum power (Pmax), open circuit voltage (Voc), and short-circuit current (Isc).
EL detector (electroluminescence detector):
Used to detect defects such as hidden cracks, black cores, broken grids, and fragments inside photovoltaic modules.
Thermal imaging camera (infrared thermal imager):
Used to detect issues such as hot spot effect and overheating of junction boxes in photovoltaic modules.
Insulation withstand voltage tester:
Used to test the insulation performance of photovoltaic modules to ensure compliance with safety standards.
Wet leakage current tester:
Used to detect the leakage current of photovoltaic modules under humid conditions and evaluate their waterproof performance.

2. Inverter detection equipment
Inverter efficiency tester:
Used to measure the conversion efficiency, input-output power, voltage, current and other parameters of inverters.
Power Quality Analyzer:
Used to detect the power quality of inverter output, including harmonics, power factor, voltage fluctuations, etc.
Insulation resistance tester:
Used to test the insulation performance of inverters to ensure compliance with safety standards.

3. Photovoltaic system testing equipment
Irradiance meter (solar radiometer):
Used to measure solar irradiance and provide environmental data for the performance evaluation of photovoltaic systems.
Environmental parameter tester:
Used to measure environmental parameters such as temperature, humidity, and wind speed, and assist in analyzing the operating conditions of photovoltaic systems.
Grounding resistance tester:
Used to test the grounding resistance of photovoltaic systems to ensure system safety.
DC clamp meter:
Used to measure DC current and check the working status of photovoltaic strings.
Communication clamp table:
Used to measure AC current and check the output status of the inverter.

4. Bracket system testing equipment
Tilt angle measuring instrument:
Used to measure the installation angle of photovoltaic brackets to ensure they meet design requirements.
Torque wrench:
Used to check the tightness of the bracket bolts and ensure the stability of the bracket.
Ultrasonic flaw detector:
Used to inspect the quality of bracket welds, ensuring their strength and durability.

5. Drone detection equipment
Drone+thermal imaging device:
Used for hot spot detection and fault location in large-scale photovoltaic power plants.
Drone+EL detector:
Used for rapid detection of internal defects in photovoltaic modules.

6. Data monitoring and analysis equipment
data collector:
Used for real-time collection of operational data of photovoltaic systems, such as voltage, current, power, etc.
Monitoring software:
Used to analyze the performance of photovoltaic systems, generate reports, and help optimize system operation.

7. Safety testing equipment
Insulated gloves and shoes:
Used to ensure the safety of testing personnel.
Leakage protection tester:
Used to detect the leakage protection function of photovoltaic systems.

8. Other auxiliary equipment
A multimeter:
Used for measuring basic electrical parameters such as voltage, current, and resistance.
Oscilloscope:
Used to analyze the waveform of electrical signals and diagnose abnormalities in inverters or components.
Battery tester:
Used to test the performance of batteries in energy storage systems.
summarize
There are various types of equipment required for photovoltaic testing, covering performance, safety, and environmental monitoring from components and inverters to the entire system. According to specific testing requirements, suitable equipment combinations can be selected. For large photovoltaic power plants, it is recommended to equip unmanned aerial vehicle detection equipment to improve detection efficiency; For laboratory or R&D scenarios, more precise instruments such as IV testers, EL detectors, etc. are needed to ensure the accuracy of data.