| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a protective relay for facilitating inspection works. <P>SOLUTION: The protection relay is provided with a detection means 4 for detecting the electrical characteristics of a main circuit in a power system, an abnormality determining means 6 for discriminating an abnormality generated in the main circuit based on data outputted from the detection means 4, a processing means 6 for implementing a protective operation for protecting the main circuit, an operation means 11 for setting and changing a configuration value for operating the processing means 6 and switching between a test mode and a normal mode, a trip contact 7, an alarm contact 8 and an error contact 9 operated by a signal outputted from the processing means 6. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
