| 摘要 |
PURPOSE:To obtain a high response protective relay which can perform processing at high speed even upon increase of set value. CONSTITUTION:A DP-RAM 4 stores every group of set data fed from a setting section 1 and indicating data fed from an indicating section 2. A setting/ indicating operating section 3 and a main operating section 5 read out all data of updated group from the DP-RAM 4 when the data are updated, and check data only at the updated part of each group stored in the DP-RAM 4 when the data are not updated. |
