More line - power mes system for improving efficiency and simplicity

摘要

The present invention relates to a power-measuring system for measuring the power of main lines and branch lines of main lead-in terminals in switchboards, distribution boards or motor control boards, which comprises inter alia: a voltage-sensing unit for generating main voltage data, which has been converted to digital, by sensing an analogue voltage signal for the main line; a current-sensing unit for generating main-current data about the main line or secondary-current data about the branch line; and a current-data communications unit or voltage-data communications unit for transmitting the sensed data or power-related data generated using the sensed data; and which system uses the sensed data or analogue voltage signal to calculate and display or relay main-line power data or branch-line power data, thereby increasing the efficiency of the power-measuring system and increasing the simplicity of wiring including signals lines and communications lines used to constitute the power-measuring system.