Monocrystalline and multicrystalline modules from CNPV Solar Power have successfully passed Potential Induced Degradation (PID) certification evaluation IEC62804, tested by Intertek.
CNPV said that under the IEC 62804 standard, Intertek had observed 0% degradation during the tests, which included test conditions of 60 degree Celsius, 85% relative humidity, a negative 1,000V DC charge for a continuous period of 96 hours.
However, the company also undertook further tests which included raising the temperature to 85 degree Celsius and keeping other test parameters and extending the test duration to 480 hours.
The company said that under these more extreme conditions, degradation was well below 0.3%, potentially setting a new crystalline class standard.
Bypina Veerraju Chaudary, CNPV's COO and CTO said: “Many customers and end users have shown interest in PID prevention progress in recent months. I think it is fair to state however that while they understand the importance of PID, they are primarily interested to know that the certificate has been attained. Our concentration at CNPV is to not only 'pass' the tests but to push the boundaries of the positive results, believing that if a test is worth pursuing, then we will work to achieve the best result within this class.”