In the IEC 61215 standard, which plays an extremely important role in the field of photovoltaic testing and certification, the wet leakage test is one of the important tests. The purpose of this test is to evaluate the insulation performance of solar modules in humid environmental conditions, preventing moisture penetration.Varying weather conditions, such as rain, morning dew, fog, or melting snow, can cause moisture to penetrate, causing corrosion, ground faults, and electrical shock hazards. The Wet Leakage Current Tester from Millennial Solar helps test the tolerance of photovoltaic modules to moisture under outdoor conditions.

How to perform a wet leakage current test?

During the test, the module is immersed in a container containing a solution [resistivity not greater than 3500Ω·cm, temperature (22±2)°C], the depth of which should effectively cover all surfaces of the module,However, the lead entrance of the junction box needs to be thoroughly sprayed with solution. If the photovoltaic module uses a connector, the connector needs to be soaked in solution during the test.Short-circuit the output of the photovoltaic module to the positive terminal of the test equipment, use a suitable metal conductor to connect the test liquid to the negative terminal of the test equipment, apply voltage at a speed not exceeding 500V/second,Until 500V or the maximum system voltage of the photovoltaic module (whichever is greater), maintain this voltage for 2 minutes and test the insulation resistance. Finally, reduce the voltage to zero and short-circuit the terminals of the test equipment to release the voltage inside the photovoltaic module. Testing requirements:

(1) For photovoltaic modules with an area of less than or equal to 0.1m², the insulation resistance shall not be less than 400MΩ;

(2) For photovoltaic modules with an area greater than 0.1m², the insulation resistance value multiplied by the module area shall not be less than 40MΩ·m².

Millennial Wet Leakage Current Tester

E-mail: market@millennialsolar.cn

Introduction:

Millennial Wet Leakage Current Tester tests the insulation performance of photovoltaic modules under humid working conditions and detects whether moisture from rain, fog, dew or melted snow enters the working part of the internal circuit of the module, causing corrosion, leakage, and non-safety accidents.

Fulfill the standard:

Meets the MQT15 clause in the IEC61215 standard and the MST17 clause in IEC61730

Features:

Compared with ordinary products, Millennial Wet Leakage Current Tester has the advantages of safety and easy operation. It can also be equipped with optional surface tensiometer and other rich test contents.

•Intelligently controls the size of the current, meets the thermal performance test of three diodes at the same time, and can control the power supply

•The liquid temperature can be automatically controlled, and the temperature control system uses an integrated cooling and heating machine to accurately control the water temperature.

•Monitor the conductivity and temperature of liquids

•Equipped with an insulation tester to conduct insulation and leakage tests on photovoltaic modules

•Aluminum alloy profile bracket with universal brake casters installed at the bottom

•Equipped with a drain valve at the bottom for easy cleaning

•Has overload, overcurrent and overvoltage alarms

Wet Leakage Current Testing is one of the highest-ranking failed tests during laboratory photovoltaic module inspection, and the Wet Leakage Current Tester is critical to the stability of photovoltaic modules. The Wet Leakage Current Tester from Millennial Solar can judge the insulation performance of photovoltaic modules under wet conditions, realize real-time detection of module quality, provide reliable data and information, improve testing and production efficiency, thereby ensures the service life and safety of photovoltaic modules.