JPH01239475A - Electronic watthour meter - Google Patents

Electronic watthour meter

Info

Publication number
JPH01239475A
JPH01239475A JP6572888A JP6572888A JPH01239475A JP H01239475 A JPH01239475 A JP H01239475A JP 6572888 A JP6572888 A JP 6572888A JP 6572888 A JP6572888 A JP 6572888A JP H01239475 A JPH01239475 A JP H01239475A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
arithmetic part
feeder
supplied
converted
inputted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6572888A
Inventor
Osamu Kajiya
Katsutaro Matsumoto
Original Assignee
Takaoka Electric Mfg Co Ltd
Tokyo Electric Power Co Inc:The
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Abstract

PURPOSE: To simplify a computation and to make a microcomputer, etc., usable by taking signals proportional to a load voltage and a load current of a feeder into an arithmetic part after they are rectified with a half-wave and converted to the digital values, and making the computation on the data in the most common with an adding.
CONSTITUTION: By an auxiliary transformer 1, the signal proportional to the load voltage of the feeder is supplied to an input terminal 9a on a rectifier circuit 9, and by an auxiliary current transformer 2, the signal proportional to the load current of the feeder is supplied to the input terminal 10a on the rectifier circuit 10. In each rectifier circuit 9, 10, the inputted signals are rectified with the half-wave and inputted to 1st and 2nd channels 15a, 15b of an A/D converter circuit 15. In this converter circuit 15, each signal inputted by means of receiving a channel number and a command from the arithmetic part 17 are converted to digital values, and these converted data are supplied to the arithmetic part 17. Then in the arithmetic part 17, the data written are made to compute in the most common with the adding, and the computed results are displayed on a display part 8.
COPYRIGHT: (C)1989,JPO&Japio
JP6572888A 1988-03-22 1988-03-22 Electronic watthour meter Pending JPH01239475A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6572888A JPH01239475A (en) 1988-03-22 1988-03-22 Electronic watthour meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6572888A JPH01239475A (en) 1988-03-22 1988-03-22 Electronic watthour meter

Publications (1)

Publication Number Publication Date
JPH01239475A true true JPH01239475A (en) 1989-09-25

Family

ID=13295369

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6572888A Pending JPH01239475A (en) 1988-03-22 1988-03-22 Electronic watthour meter

Country Status (1)

Country Link
JP (1) JPH01239475A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5903145A (en) * 1992-02-21 1999-05-11 Abb Power T & D Company Inc. Universal electronic energy meter for use with 4-wire standard services

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5903145A (en) * 1992-02-21 1999-05-11 Abb Power T & D Company Inc. Universal electronic energy meter for use with 4-wire standard services
US6229295B1 (en) 1992-02-21 2001-05-08 Abb Power T&D Company Inc. Apparatus for metering at least one type of electrical power over a predetermined range of service voltages
US6940268B2 (en) 1992-02-21 2005-09-06 Elster Electricity, Llc Apparatus for metering at least one type of electrical power over a predetermined range of service voltages

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