JPS62162977A - Phase meter-incorporated power control meter - Google Patents
Phase meter-incorporated power control meterInfo
- Publication number
- JPS62162977A JPS62162977A JP578186A JP578186A JPS62162977A JP S62162977 A JPS62162977 A JP S62162977A JP 578186 A JP578186 A JP 578186A JP 578186 A JP578186 A JP 578186A JP S62162977 A JPS62162977 A JP S62162977A
- Authority
- JP
- Japan
- Prior art keywords
- phase
- meter
- circuit
- currents
- phases
- 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
Links
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、３相交流回路の電流や皮相電力や力率などを
測定する位相計内蔵形の電力管哩計に関するものである
。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a power tube meter with a built-in phase meter for measuring current, apparent power, power factor, etc. of a three-phase AC circuit.
従来の技術
３相回路の力率を測定する場合、３相回路の相回転方向
を正しく知ることが力率を測定するための前提条件であ
る。BACKGROUND OF THE INVENTION When measuring the power factor of a three-phase circuit, correctly knowing the phase rotation direction of the three-phase circuit is a prerequisite for measuring the power factor.
従来の位相計内蔵形電力管理計は、第２図に承りように
、位相比較回路１と表示回路２と入力抵抗３，４とダイ
オード５，６とを備え、３相電圧を入力として２相電圧
の位相比較により相回転を判定するものであった。As shown in Fig. 2, the conventional power management meter with a built-in phase meter is equipped with a phase comparator circuit 1, a display circuit 2, input resistors 3, 4, and diodes 5, 6, and receives a 3-phase voltage as an input. Phase rotation was determined by voltage phase comparison.
発明が解決しようとする問題点 しかじながら、上記従来の構成では、Ｒ，Ｓ。The problem that the invention aims to solve However, in the above conventional configuration, R, S.
■の３相から結線しなければならず、結線作業に手数を
要するという問題があった。There was a problem in that the wiring had to be connected from the three phases of (2), and the wiring work was time-consuming.
問題点を解決するための手段
上記問題点を解決するため、本発明の位相計内蔵形電力
管理計は、３相交流回詫の２相の電流を各々測定するク
ランプ式の２個の変流器と、この変流器により測定され
た２相の電流の位相比較を行なって前記３相交流回路の
相回転方向を判定する比較判定手段とを備えた構成とし
たものである。Means for Solving the Problems In order to solve the above problems, the power management meter with a built-in phase meter of the present invention has two clamp-type current transformers that each measure two-phase currents of three-phase AC circulation. The current transformer comprises a current transformer and a comparison/judgment means for comparing the phases of the two-phase currents measured by the current transformer to determine the phase rotation direction of the three-phase AC circuit.
作用
３相平衡負荷の電流は、Ｒ相に対してＳ相は１２０″遅
れ、さらにＴ相はＳ相より １２０′″遅れている。し
たがって２相電流たとえばＲ相とＳ相との関係を調べ、
Ｒ相が進みの関係にあれば正相で、逆の関係にあれば逆
相であることがわかる。The current of the working three-phase balanced load is such that the S phase lags the R phase by 120'', and the T phase lags the S phase by 120''. Therefore, by examining the relationship between two-phase currents, for example, R phase and S phase,
It can be seen that if the R phase is in a leading relationship, it is a positive phase, and if it is in a reverse relationship, it is a negative phase.
実施例 以下、本発明の一実施例を第１図に基づいて説明する。Example An embodiment of the present invention will be described below with reference to FIG.
第１図は本発明の一実施例における位相計内蔵形電力管
理計の要部の構成図で、１１は位相比較回路、１２は表
示回路、ＣＴ１．ＣＴ２はクランプ式の電流検出用ＣＴ
、Ｒ１，Ｒ２は入力抵抗、Ｄｔ 。FIG. 1 is a configuration diagram of the main parts of a power management meter with a built-in phase meter according to an embodiment of the present invention, in which 11 is a phase comparator circuit, 12 is a display circuit, CT1. CT2 is a clamp type current detection CT
, R1, R2 are input resistances, Dt.
Ｄ２はダイオードである。D2 is a diode.
位相比較回路１１によって、ダイオードＤ１゜Ｄ２で整
流された出力ｅ１と０２との位相比較を行ってＲ相が・
進みか遅れかを判定し、その結果を表示回路１２により
表示する。The phase comparison circuit 11 compares the phases of the outputs e1 and 02 rectified by the diodes D1 and D2, and determines that the R phase is
It is determined whether there is a lead or a lag, and the display circuit 12 displays the result.
このように本実施例によれば、３相のうちの２相の電流
を検出するだけでよいので、結線作業を容易に行なえる
。またクランプ式のＴｉ流検出用ＣＴ （ＣＴ１）（Ｃ
Ｔ２ ）を用いているので、作業が容易であると共に、
活線状態でも完全に作業を行なえる。As described above, according to this embodiment, it is only necessary to detect the currents of two of the three phases, so that the wiring work can be easily performed. In addition, a clamp-type Ti flow detection CT (CT1) (C
T2), the work is easy and
Work can be completed even when the line is live.
発明の効果
以上述べたように本発明によれば、結線作業を容易かつ
迅速に、また安全に行なえ、非常に経済的である。Effects of the Invention As described above, according to the present invention, wiring work can be performed easily, quickly, and safely, and is very economical.
第１図は本発明の一実施例における位相泪内蔵形電力管
理計の要部の構成図、第２図は従来の位相計内蔵形電力
管理計の要部の構成図である。
１１・・・位相比較回路、ＣＴ１．ＣＴ２・・・電流検
出用ＣＴFIG. 1 is a configuration diagram of the main parts of a power management meter with a built-in phase meter according to an embodiment of the present invention, and FIG. 2 is a diagram of the configuration of the main parts of a conventional power management meter with a built-in phase meter. 11... Phase comparison circuit, CT1. CT2...CT for current detection
Claims (1)
式の２個の変流器と、この変流器により測定された２相
の電流の位相比較を行なって前記３相交流回路の相回転
方向を判定する比較判定手段とを備えた位相計内蔵形電
力管理計。Two clamp-type current transformers each measure the two-phase currents of the one- and three-phase AC circuits, and the phases of the two-phase currents measured by the current transformers are compared to determine the current of the three-phase AC circuit. A power management meter with a built-in phase meter, comprising comparison and determination means for determining the direction of phase rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP578186A JPS62162977A (en) | 1986-01-13 | 1986-01-13 | Phase meter-incorporated power control meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP578186A JPS62162977A (en) | 1986-01-13 | 1986-01-13 | Phase meter-incorporated power control meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62162977A true JPS62162977A (en) | 1987-07-18 |
Family
ID=11620649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP578186A Pending JPS62162977A (en) | 1986-01-13 | 1986-01-13 | Phase meter-incorporated power control meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62162977A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0461073U (en) * | 1990-10-04 | 1992-05-26 | ||
| WO2021210360A1 (en) * | 2020-04-17 | 2021-10-21 | インフォメティス株式会社 | Measurement device, measurement device control method, and measurement device control program |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59142470A (en) * | 1983-02-02 | 1984-08-15 | Matsushita Electric Ind Co Ltd | Electric power controller |
| JPS6018774A (en) * | 1983-07-12 | 1985-01-30 | Mitsubishi Electric Corp | Phase sequence detector |
-
1986
- 1986-01-13 JP JP578186A patent/JPS62162977A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59142470A (en) * | 1983-02-02 | 1984-08-15 | Matsushita Electric Ind Co Ltd | Electric power controller |
| JPS6018774A (en) * | 1983-07-12 | 1985-01-30 | Mitsubishi Electric Corp | Phase sequence detector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0461073U (en) * | 1990-10-04 | 1992-05-26 | ||
| WO2021210360A1 (en) * | 2020-04-17 | 2021-10-21 | インフォメティス株式会社 | Measurement device, measurement device control method, and measurement device control program |
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