Light reflectance and arc resistance of nozzle for circuit breaker

Abstract

A study on the arc resistance and light reflectance of PTFE nozzle for circuit breaker is presented. PTFE has been used widely as a material for circuit breaker nozzle. In the arcing environment in a circuit breaker, the fraction of the radiation power is emitted out of the arc and reaches the nozzle wall by radiation, causing ablation at the surface and in the depth of the wall. In this paper, some tillers that have endurance in the high temperature arc environment were added into PTFE. Adding some tillers into PTFE was expected to be efficient in improving the endurability against radiation. The light reflectance and arc resistance of PTFE composites were investigated.

The arc resistance of binary filled silicone rubber

“…The arc resistance of PTFE is studied by H. Y. Park et al [21]. The result showed that boron nitride (BN) filled PTFE lost the least weight during arc test than Al 2 O 3 , TiO 2 filled PTFE.…”

“…Except of these standard test methods, some researchers applied laser instead of arc to study performance of different materials [8,9]. To improve arc resistance of polymer insulation, various inorganic fillers are doped in polymer matrix [10][11][12][13][14][15][16][17][18][19][20][21]. In 1990s, Japanese scholar found that Alumina trihydrate (ATH) could improve the tracking resistance of silicone rubber [10][11][12].…”