Design of Recovery Voltage Injected Method Equipment for Post-Arc Explosion Interrupt Rating Test

For secondary battery overcurrent protection devices, it is essential to perform breaking capacity tests to verify their safety in the context of explosive current events resulting from electrical mobility breakdown during the electrophoresis process and explosive fire incidents caused by post-arc phenomena. However, constructing a high-capacity DC power supply test system for breaking capacity entails considerable expenses in equipment configuration. In this study, a low-voltage high-current DC power source is employed to switch a low-current high-voltage power supply device designed an operational procedure. A system capable of conducting high breaking capacity tests with low-capacity DC power facilities is designed and confirmed the absence of statistically significant differences in the I-T curve test of overcurrent protection devices, initial current breaking capacity, and the limit test for residual arc explosion capacity. The reliability of the tests is established through comparative breaking capacity assessments with high-power supplies.