Photovoltaic device IP grade test method

Abstract

The invention discloses a photovoltaic device IP grade test method, comprising steps of placing one photovoltaic device sample to be tested in a container filled with water and fully immersing the photovoltaic device in the water, exposing the wire outlet end of the sample to be tested out of the water surface and connecting the wire outlet end to an anode of an insulation resistor tester, wherein the cathode of the insulation resistor tester is connected to a metal conductive block which is immersed in the water and placed in the container through a lead, and opening the insulation resistor tester to test the insulation resistor of the sample to be tested so as to obtain the IP grade of the photovoltaic device when the sample to be tested achieves a preset immersion duration. The photovoltaic device IP grade test method can discover the deficiency and hidden troubles of the sealing performance in the prior art, optimizes the production assembling technology, and reduces the market client complaints, and is easy to operate and popularize and realize the production line.

Description

technical field [0001] The invention relates to the technical field of photovoltaic device testing, in particular to a photovoltaic device IP level testing method. Background technique [0002] The International Electrotechnical Commission (IEC) declares that the protection level of electrical equipment against the intrusion of foreign objects is called IP level. The second number represents the waterproof protection level, which is tested according to the IEC 60529 standard, but it does not specify the specific test method for the relevant water ingress and dielectric capacity. The design qualification and finalization of ground-use crystalline silicon photovoltaic modules generally adopt the test methods specified in the IEC 61215 standard. The photovoltaic modules that pass the test can be used for a long time under the specified climatic conditions, and their actual service life expectations will depend on the design of the modules and their use. environment and conditi...

AI Technical Summary

Problems solved by technology

However, the test water tank for the wet leakage current test in the IEC 61215 standard is aimed at photovoltaic modules, with a shallower depth and a larger area. In addition, the connectors, wires, and junction boxes are not soaked or only sprayed.

[0003] In the electric field of the power station, the insulation of the connector was also found. Based on the analysis of the samples returned by the customer, the wet leakage current test of the IEC 61215 standard fully met the requirements. A comprehensive analysis found that the length of the insulation coating on the outlet end of the connector was insufficient.

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