A COMPARISON OF CURRENT INTERRUPTION BY SAND SiO_2 AND SAND SiO_2/GAS SF_6 FUSES

摘要

The comparison described below is based on the interrupting currents of test duty 1, 2 and 2a according to EEC Publ. 269-4. Special test arrangement for SiO_2/SF_6 has been applied. Semiconductor SiO_2 and SiO_2/SF_6 fuses with friable and stone sand of 1000 V, 160 A were tested. The conclusions show on needs of further more detailed investigations mentioned at the end of paper. The results show superiority of SiO_2/SF_6 fuses with friable sand as concerns the post-arc behaviour.