| 摘要 |
PURPOSE:To prevent a setting value from being set in error and prevent a relay from being incorrectly worked, by generating alarm, when it is discriminated that a value computed with the combination of a plurality of set setting values is improper on processing. CONSTITUTION:Each current on the primary side and secondary side of a protected transformer T1 is respectively transformed by main current transformers CT1, CT2, and the input to an input converter 10 is provided. The input of the output of the input converter 10, to a relay 11 is provided. The relay 11 consists of a setting section 2 for setting reference current on the primary side and secondary side of the protected transformer T1 and the ratio of the current transformation of the main current transformers CT1, CT2, and a relay discriminating section 12. The setting section 2 has a display means for generating alarm when it is discriminated that a value computed with the combination of a plurality of set setting values is improper on processing. |
