| 摘要 |
PROBLEM TO BE SOLVED: To perform a safe and reliable display test in a significantly shortened working time while completely preventing a worker's human errors in the display test, such as electrification, short circuit and ground fault accidents and power supply trouble.SOLUTION: A display testing apparatus used for a display test of a remote monitoring and control apparatus having a display terminal block having a power equipment side terminal connected to power equipment and a display board side terminal connected to a display board includes: a first switch circuit for supplying a positive DC power supply to the display board side terminal in response to a first control signal; and a control signal output section for, in the case of the display test, outputting the first control signal on the basis of control information input from an external testing apparatus. |
