JPS5956568U

JPS5956568U - Electronic energy meter

Info

Publication number: JPS5956568U
Application number: JP15205282U
Authority: JP
Inventors: 水谷　功明
Original assignee: Fuji Electric Co Ltd
Current assignee: Fuji Electric Co Ltd
Priority date: 1982-10-08
Filing date: 1982-10-08
Publication date: 1984-04-13

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の電子式電力量計の構成例を示すブロック
回路図、第２図は従来の電子式電力量計の別の構成例を
示すブロック回路図、第３図は本考案に係る電子式電力
量計の一実施例を示すブロック回路図である。１０・・・計器用変圧器、１２・・・電力検出器、１４
・・・電源トランス、１６・・・整流回路、１８・・・
レベル判定回路、２０・・・ＡＮＤ回路、２２・・・点
灯表示器。FIG. 1 is a block circuit diagram showing an example of the configuration of a conventional electronic watt-hour meter, FIG. 2 is a block circuit diagram showing another example of the configuration of a conventional electronic watt-hour meter, and FIG. 3 is a block circuit diagram according to the present invention. FIG. 1 is a block circuit diagram showing an example of an electronic watt-hour meter. 10... Instrument transformer, 12... Power detector, 14
...Power transformer, 16... Rectifier circuit, 18...
Level judgment circuit, 20...AND circuit, 22...Lighting indicator.

Claims

[Scope of utility model registration request]

(1) In a polyphase meter that connects a single power transformer to any one phase, the voltage supply status is detected for each phase, and energization is displayed only when all phases are supplied with the appropriate voltage. An electronic watt-hour meter characterized by being provided with a display circuit that performs.

(2) Scope of Utility Model Registration In the electronic watt-hour meter described in claim 1, the display circuit is a detection voltage obtained via a rectifier circuit on the secondary side of a voltage transformer provided for each phase. An electronic type that is connected to a level judgment circuit that compares the value with a predetermined reference voltage value and obtains an output signal when the voltage exceeds this reference voltage value, and connects these level judgment circuits to a display via an AND circuit. Electric energy meter.

(3) The electronic watt-hour meter according to claim 2 of the utility model registration claim, wherein the phase voltage transformer to which the power transformer is connected is configured to also serve as the power transformer.

(4) Utility Model Registration In the electronic watt-hour meter according to claim 2 or 3, the rectifier circuit of the phase to which the power transformer is connected is replaced with a rectifier circuit provided after the power transformer. An electronic power meter.

(5) Utility Model Registration The electronic watt-hour meter according to claim 2 or 3, in which the phase rectifier circuit and level determination circuit to which the power transformer is connected are omitted.