Key Techniques Study on Auto-verification Line of External Circuit Breaker for Watt-hour Meter

In view of some problems existing in the process of sampling inspection of external circuit breaker of electric energy meter of State Gird Corporation of China, the detections scheme of external circuit breaker of electric energy meter is proposed, and the auto-verification line of external circuit breaker of electric energy meter is designed and implemented. The structure of auto-verification line, the function and working process of each unit are deeply studied. On the basis of researching State Grid Corporation standard, the auto-verification line for external circuit of breaker of electric energy meter is designed and implemented, which integrates the functions of AC 220V level control test, electrical performance comprehensive test, temperature rise test, mechanical life test, electrical life test, tripping test, etc. The automation and informatization of the sampling inspection process of the external circuit breaker of the electric energy meter are realized. Through the analysis and comparison of the performance indexes among the autoverification line of the external circuit breaker of the electric energy meter with manual and the ordinary auto-verification line, the results show that the economy and practicability of the pipeline are realized by using this paper.