CURRENT MEASUREMENT DEVICE, CONTROL METHOD AND CONTROL PROGRAM FOR SAME, RECORDING MEDIUM, AND POWER MEASUREMENT DEVICE

摘要

A microcomputer section operates by use of electric power from a power supply section. The microcomputer section carries out control so that any one of a plurality of switching circuits is selected, the selected one of the plurality of switching circuits causes an electric current from a corresponding current transformer of a plurality of current transformers to flow to the microcomputer section, whereas the other unselected switching circuits cause electric currents from respective current transformers of the plurality of current transformers to flow to the power supply section, and the selection is carried out successively with respect to each of the plurality of switching circuits.

主权项

1. An electric current measuring device for causing a plurality of current transformers provided to a respective plurality of power lines to measure electric currents flowing through the plurality of power lines,
said electric current measuring device comprising: at least one electricity storing section for storing electricity by use of electric currents from the plurality of current transformers provided to the respective plurality of power lines; an electric current measuring section for measuring, in accordance with the electric currents from the plurality of current transformers, the electric currents flowing through the plurality of power lines provided with the respective plurality of current transformers; and a control section for carrying out control so that the electric current measuring section carries out the measurement in accordance with an electric current from one of the plurality of current transformers and repeats the measurement for each of the plurality of current transformers, the electric current measuring section and the control section each operating by use of electric power from the at least one electricity storing section.