A DISCUSS ON RELIABILITY TEST AND LIFE PERIOD ASSESSMENT FOR OPTICAL CURRENT SENSING HEAD
Guo Zhi-zhong · Power System Technology · 2005
The reliability of optical current transducer (OCT) depends upon the reliability of optical current sensing head (OCSH) to large extent, which is the key component of OCT. By means of analogy analysis, the failure modes and failure mechanism of OCSH based on Faraday magneto-optical effect were analyzed from the viewpoint of reliability. Referring to the standards for reliability test of passive optical components home and abroad, the contents and program of reliability test for OCSH were designed. According to the accelerated failure model, the assessment method of reliability and calculation method of life period of OCSH were illustrated with example.