| Title |
A Study on the High Speed Interruption of Parallel Arcing |
| Authors |
Gyung-Suk Kil ; Hong-Keun Ji ; Dae-Won Park ; Il-Kwon Ki ; Young-Il Kim ; Young-Jin Cho |
| Keywords |
Earth leakage circuit breakers(ELCBs) ; Parallel arc ; Low-voltage indoor wiring system ; Air-core current sensor ; Signal converter |
| Abstract |
Conventional Earth Leakage Circuit Breakers (ELCBs) have defects of a breaking failure or a long breaking-time against parallel arc current. In this paper, breaking characteristics of conventional ELCBs were analyzed by simulation of parallel arc in a low-voltage indoor wiring system, and an air-core current sensor and a signal converter being most available for parallel arc detection were developed and applied to a conventional ELCB. The proposed tripped the ELCB regardless of the location of parallel arc. The breaking-time was in ranges of 1.74~8.3[ms] depending on the phase of arc generation, which is about 5 times as fast as conventional ELCBs with the breaking-time of 50[ms]. |