ELECTRIC POWER MEASURING SYSTEM FOR MULTI-LINE INCREASING EFFICIENCY AND SIMPLICITY THEREOF

摘要

PURPOSE: An electric power measuring system for the multi-line increasing efficiency and simplicity thereof is provided to increase the simplicity of a power measuring system by commonly using main voltage data. CONSTITUTION: An electric power measuring system includes a voltage measuring apparatus(100) and a current measuring apparatus(200). A main voltage data is generated by converting sensed main voltage into digital data. A current sensed from a brand line is converted into digital data to generate a sub current data. The sub current data which is generated in a first step is transmitted. A power data in a sub line is calculated by using the sub current data which is received in a second step and the main voltage data.