MONITOR FOR OPERATION OF SWITCHING DEVICE

摘要

PROBLEM TO BE SOLVED: To enable measurement of operating current, even if switching devices are operated in succession. SOLUTION: A device discriminating means 16 discriminates to which switching devices 9 and 11 individual pieces 10a and 12a the voltage data pertain. Valid data of the first piece 10a of voltage data are stored in a first storage means 14, and valid data of the second piece 12a of voltage data are stored in a second storage means 15.