Patent ID: 7171317
Filing Date: 2007-01-30
Classification: G01D,H01H,Y02B,Y04S

Abstract:
1. A load information display device connected with a plurality of measuring instruments to measure the load information including the current, voltage, power, wattage and power factor of an electrical circuit, comprising: recording means for recording the load information measured by said measuring instruments; display means for displaying said recorded load information; selecting means for selecting the items displayed on said display means; and two types of digital signal communication means connectable with a plurality of devices; wherein one type of digital signal communication means is connected to a central processing unit to use said one type of said digital signal communication means as communication means for recoding and centrally managing the load information measured by said measuring instruments in said central processing unit; wherein another type of digital signal communication means is connected to at least one of said measuring instruments to use said another type of digital signal communication means as communication means for acquiring the load information measured by said at least one of measuring instrument; wherein said two types of digital signal communication means are separated by said display means; wherein a communication protocol to acquire the load information measured by said plurality of measuring instruments and a communication protocol to transmit the load information measured by said plurality of the measuring instruments to the central processing unit for recording and centrally managing the load information are shared with each other; and wherein said displaying means receives a request for the load information to be recorded and centrally managed in said central processing unit from said central processing unit, makes said request for the load information to said at least one of said measuring instruments connected to said another type of digital signal communication means, and transmits the information acquired from said at least one of said measuring instruments to the central processing unit.