Thermal Stability Analysis of Metering Box Based on Temperature Rise Test of Interference Connector

The electric energy metering box has entered into thousands of customers with the development of power electronic technology. Unfortunately, the quality problem of metering box components is more and more serious. Aiming at this problem, the thermal stability of metering box based on thickness of thermo bimetals are researched, which adopts the traditional circuit breaker of different manufactures. Based on metering box, the temperature rise test of interference connector is studied by using the designed thin hot bimetal strip [1-3]. Compared the experimental data of the designed thin thermo bimetals with the traditional circuit breaker, the result shows that the thickness of bimetal strip has important influence on the current carrying capacity and thermal stability, the research of this paper can provide technical basis for optimization of thermal stability about metering box.