What is the IEC62446-1 that AQ Electric teams follow during PV site inspections⁉️
The IEC 62446-1 is an international standard for testing, documenting, and maintaining grid-connected photovoltaic systems. It sets standards for how system designers and installers of grid-connected PV systems must provide information and documentation to customers.
This standard also describes DC testing of the PV system, which can also be used for periodic testing of the system.
In the standard, the test is classified into categories 1 and 2 according to the size of the PV system. Category 1 applies to all solar PV generation systems. Category 2 applies for larger or more complex systems such as mega solar power plant.
☀️Category 1 Inspection
1- Earth protective continuity test and/or equipotential bonding conductor
If the DC side has earthing, such as a frame or equipotential bonding, a continuity test is required.
2- Polarity inspection
Check the polarity of the cables before connecting them to the switching device or inverter.
3-Combiner box test
A test to verify that all strings are connected correctly.
4-Strings open circuit voltage test
For checking the voltage of PV modules connected in series.
5-String circuit current test (short circuit or operational)
To confirm the function of strings and that there are no major issues
6-Functional test
Check the operation and installation of control devices such as relay switches and circuit breakers.
7-Insulation resistance test
Test the insulation resistance to ensure electrical safety.
All Category 1 tests must be completed and passed before moving on to the additional Category 2 tests.
☀️Category 2 Inspection
1- I-V curve test
This test evaluates the current-voltage characteristics of PV strings.
2- Infrared thermographic inspection
The heat generation of PV modules is inspected by the IR thermal camera. By knowing the deviation of the temperature, problems like the bypass diode in the PV arrays can be detected.
The international standard for testing, documenting, and maintaining grid-connected PV systems is IEC 62446-1. Using the right measuring tools is important for keeping the system running and making sure it is safe. Our expert team provides comprehensive services to ensure the optimal performance and safety of solar plants.
From initial inspections to ongoing maintenance, AQ Electric is dedicated to delivering reliable, high-quality support, guaranteeing that PV systems operate efficiently and effectively.
Trust AQ Electric for all your solar testing needs, and ensure your plant meets the highest standards of quality and performance.
For more information and requests you can reach us,,
– Email: Aqatawneh@aqelectric.net
– Mobile: +201151006630
+962795154126