JPS6326354B2 - - Google Patents
Info
- Publication number
- JPS6326354B2 JPS6326354B2 JP56023164A JP2316481A JPS6326354B2 JP S6326354 B2 JPS6326354 B2 JP S6326354B2 JP 56023164 A JP56023164 A JP 56023164A JP 2316481 A JP2316481 A JP 2316481A JP S6326354 B2 JPS6326354 B2 JP S6326354B2
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- current
- terminals
- connector
- section
- 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.)
- Expired
Links
- 238000012360 testing method Methods 0.000 claims description 24
- 230000005611 electricity Effects 0.000 claims description 9
- 238000000605 extraction Methods 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 3
- 239000000284 extract Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000012353 t test Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Description
【発明の詳細な説明】
本発明は、電子式電力量計の試験装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a testing device for an electronic watt-hour meter.
電子式電力量計を概略説明すると、負荷電圧に
対応した電気量、負荷電流に対応した電気量をそ
れぞれ抽出し、これらの負荷電圧対応の電気量と
負荷電流対応の電気量とから負荷電力量を演算す
る計器で、１つのケース内に上述の諸回路が一体
的に収納されている。 To briefly explain the electronic watt-hour meter, the amount of electricity corresponding to the load voltage and the amount of electricity corresponding to the load current are extracted, and the amount of electricity corresponding to the load voltage and the amount of electricity corresponding to the load current are calculated. This is an instrument that calculates , and the above-mentioned circuits are integrally housed in one case.
このような計器において、負荷電圧対応の電気
量および負荷電流対応の電気量を抽出する部分
と、演算を行う部分とを別体に構成した電子式電
力量計を出願人は開発している（特願昭54−
130843）。 Among such meters, the applicant has developed an electronic watt-hour meter in which the part that extracts the electrical quantity corresponding to the load voltage and the electrical quantity corresponding to the load current, and the part that performs calculations are configured separately ( Special request 1977-
130843).
すなわち、第１図に示すように、電力量計は電
気量抽出部１０と演算部１１とから成り、それぞ
れのケースに収容されている。電気量抽出部にお
いて、１２は電圧変成器で、１３，１４はその負
荷電圧端子、１５，１６は負荷電圧対応の電気量
を生じる出力端子である。１７は電流変成器で、
１８，１９はその負荷電流端子、２０，２１は負
荷電流対応の電気量を生じる出力端子である。２
２は補助電源部で、端子１３，１４から入力を受
け、端子２３，２４に出力する。出力側の端子１
５，１６，２０，２１，２３，２４はコネクター
２５を構成している。そして、このコネクター２
５は、電気量抽出部を収容するケースに取付けら
れている。 That is, as shown in FIG. 1, the watthour meter consists of an electric quantity extraction section 10 and a calculation section 11, each of which is housed in a case. In the electric quantity extraction section, 12 is a voltage transformer, 13 and 14 are its load voltage terminals, and 15 and 16 are output terminals that generate an electric quantity corresponding to the load voltage. 17 is a current transformer,
18 and 19 are load current terminals thereof, and 20 and 21 are output terminals that generate an amount of electricity corresponding to the load current. 2
Reference numeral 2 denotes an auxiliary power supply unit which receives input from terminals 13 and 14 and outputs to terminals 23 and 24. Output side terminal 1
5, 16, 20, 21, 23, and 24 constitute a connector 25. And this connector 2
5 is attached to a case that accommodates the electric quantity extractor.
演算部１１において、２６は乗算部で、２７，
２８は端子１５，１６にそれぞれ対応した入力用
端子、２９，３０は端子２０，２１にそれぞれ対
応した入力用端子である。３１は積分器、３２は
分周器、３３は計数表示器を示す。３４は補助電
源のインターフエース部で、３５，３６は端子２
３，２４にそれぞれ対応した入力用端子である。
端子２７，２８，２９，３０，３５，３６はコネ
クター３７を形成し、コネクター２５と接離自在
に構成される。コネクター３７は演算部１１を収
納するケースに取付けられている。 In the calculation unit 11, 26 is a multiplication unit, 27,
Reference numeral 28 indicates input terminals corresponding to the terminals 15 and 16, respectively, and 29 and 30 indicate input terminals corresponding to the terminals 20 and 21, respectively. 31 is an integrator, 32 is a frequency divider, and 33 is a count display. 34 is the interface part of the auxiliary power supply, 35 and 36 are terminals 2
These are input terminals corresponding to numbers 3 and 24, respectively.
The terminals 27, 28, 29, 30, 35, and 36 form a connector 37, which can be freely connected to and separated from the connector 25. The connector 37 is attached to a case that houses the calculation section 11.
電気量抽出部１０と演算部１１とを、プラグと
ソケツトとのようなコネクター２５，３７を介し
て合体すると電子式電力量計となり次のように動
作する。 When the electric quantity extraction section 10 and the calculation section 11 are combined via connectors 25 and 37 such as a plug and a socket, an electronic watthour meter is formed and operates as follows.
負荷電圧VL、負荷電流ILはそれぞれ電圧変成器
１２、電流変成器１７によつてVLに比例した電
圧、ILに比例した電流に変換され、乗算器２６に
入力されて乗算され入力電力に比例した信号、例
えば電圧に変換される。乗算器２６の出力は積分
器３１によつて周波数に変換され、さらに分周器
３２によつて分周され、適当なパルスの重みづけ
が行なわれて、その出力の積算値が計数表示器３
３によつて表示される。なお、補助電源のインタ
ーフエース部３４から、演算部１１内の他の回路
に必要な電力が供給される。 The load voltage V L and the load current I L are converted by the voltage transformer 12 and the current transformer 17 into a voltage proportional to V L and a current proportional to I L , respectively, and input to a multiplier 26 where they are multiplied and input. It is converted into a signal proportional to power, for example a voltage. The output of the multiplier 26 is converted into a frequency by an integrator 31, and further divided by a frequency divider 32, appropriate pulse weighting is performed, and the integrated value of the output is displayed on the count display 3.
3. Note that the necessary power is supplied to other circuits within the calculation section 11 from the interface section 34 of the auxiliary power supply.
従来、電力量計の試験は、負荷電圧端子および
負荷電流端子それぞれに定格電圧（例えばVL＝
100V）および定格電流（例えばIL＝30A）を印加
して行つていた。しかし、電力量計の精度確認に
は正確な定格電圧、定格電流を印加しなければな
らないが、このような比較的高電圧、比較的大電
流を発生させる装置は相当に大形となり、手軽に
試験できなかつた。 Traditionally, when testing a watt-hour meter, the rated voltage (for example, V L =
100V) and a rated current (for example, I L =30A). However, to check the accuracy of a watt-hour meter, it is necessary to apply accurate rated voltage and rated current, but devices that generate such relatively high voltage and relatively large current are quite large and cannot be easily installed. I couldn't test it.
本発明は、別体形の電子式電力量計の特徴をい
かして、手軽に試験を行うための装置を得ること
を目的とする。 SUMMARY OF THE INVENTION The present invention aims to provide a device for easily conducting tests by taking advantage of the features of a separate electronic watt-hour meter.
以下、図面を参照して本発明をその実施例につ
いて説明する。第２図において、全体を４０で示
す部分が一実施の試験装置を示している。４１は
電圧源で、負荷電圧対応の電気量を模擬する電圧
をその出力端子４２，４３に発生する。４４は電
流源で、負荷電流対応の電気量を模擬する電流を
その出力端子４５，４６に発生する。４７は位相
設定部で、電圧源４１の出力電圧と電流源４４の
出力電流との間の位相差を所望の値とするよう
に、電圧源４１に対してφ1信号を、電流源４４
に対してφ2信号をそれぞれ与える。４８は補助
電源部で、被試験演算部１１の駆動電力を供給す
る出力をその端子４９，５０に生じる。 Embodiments of the present invention will be described below with reference to the drawings. In FIG. 2, the portion generally designated 40 represents one implementation of the test apparatus. A voltage source 41 generates a voltage at its output terminals 42 and 43 that simulates the amount of electricity corresponding to the load voltage. A current source 44 generates a current at its output terminals 45 and 46 that simulates the amount of electricity corresponding to the load current. Reference numeral 47 denotes a phase setting unit which outputs a φ 1 signal to the voltage source 41 and outputs a φ 1 signal to the current source 44 so that the phase difference between the output voltage of the voltage source 41 and the output current of the current source 44 is set to a desired value.
A φ 2 signal is given to each. Reference numeral 48 denotes an auxiliary power supply section, which produces an output at its terminals 49 and 50 for supplying driving power for the arithmetic section 11 under test.
端子４２，４３は端子２７，２８に、端子４
５，４６は端子２９，３０に、端子４９，５０は
端子３５，３６にそれぞれ対応している。そし
て、端子４２，４３，４５，４６，４９，５０は
第２図の電気量抽出部１０のコネクター２５と同
様のコネクター５１に構成されている。すなわち
コネクター５１はコネクター３７と接離自在にな
つている。このコネクター５１は試験装置の図示
しないケースに取付ける。また、端子４５，４６
は、端子２９，３０と接合していないとき、短絡
するように構成され、電流源４４の出力端が開放
されないようにされている。端子２９，３０の間
には、絶縁材５２を介挿しても良い。 Terminals 42 and 43 are connected to terminals 27 and 28, and terminal 4
5 and 46 correspond to the terminals 29 and 30, and terminals 49 and 50 correspond to the terminals 35 and 36, respectively. The terminals 42, 43, 45, 46, 49, and 50 are configured into a connector 51 similar to the connector 25 of the electrical quantity extraction section 10 in FIG. That is, the connector 51 can be freely connected to and separated from the connector 37. This connector 51 is attached to a case (not shown) of the test device. In addition, terminals 45 and 46
is configured to be short-circuited when not connected to the terminals 29 and 30, so that the output end of the current source 44 is not opened. An insulating material 52 may be inserted between the terminals 29 and 30.
試験に際しては、演算部１１を電気量抽出部１
０から抜きとり、試験装置４０に挿入する。すな
わち、第２図において、コネクター５１と３７と
が合体した状態で試験を行う。電圧源４１はφ1
信号に応じた位相φ1の所定電圧を生じ乗算部２
６に印加する。また、電流源４４はφ2信号に応
じた位相φ2の所定電流を生じ乗算器２６に与え
る。従つて、電圧・電流の位相差すなわち力率は
COS（φ1−φ2）となる。被試験演算部１１は補助
電源部４８から電力を供給されて動作する。この
ようにして、試験装置４０からの模擬電気量によ
つて、演算部１１の各種試験を行うことができ
る。 During the test, the calculation unit 11 is replaced by the electrical quantity extraction unit 1.
0 and insert it into the test device 40. That is, in FIG. 2, the test is conducted with the connectors 51 and 37 combined. The voltage source 41 is φ 1
Multiplying unit 2 generates a predetermined voltage of phase φ 1 according to the signal.
6. Further, the current source 44 generates a predetermined current of phase φ 2 according to the φ 2 signal and supplies it to the multiplier 26 . Therefore, the phase difference between voltage and current, or power factor, is
COS(φ 1 −φ 2 ). The calculation unit under test 11 operates by being supplied with power from the auxiliary power supply unit 48 . In this way, various tests on the calculation unit 11 can be performed using the simulated electrical quantity from the test device 40.
上述の実施例においては、コネクター５１が試
験装置４０に一体に組込まれているが、第３図に
示すように、コネクター５１をケーブル６１を用
いて試験装置の本体４０ａと接続するように別体
としても良い。 In the above embodiment, the connector 51 is integrated into the test device 40, but as shown in FIG. It's good as well.
また、第４図に示すように、演算部１１ａがパ
ルス出力端子７１，７２を備えているときは、試
験装置４０ｂに計数装置８１を内蔵させてもよ
い。８２，８３は計数装置８１の入力端子で、コ
ネクター５１ａはこれらの端子を含んでいる。
尚、コネクター３７ａも端子７１，７２を含んで
いる。なお、計数装置８１には外部からその計数
機能を制御するための信号Ｓを受けてもよい。 Further, as shown in FIG. 4, when the calculation section 11a is equipped with pulse output terminals 71 and 72, a counting device 81 may be built into the testing device 40b. 82 and 83 are input terminals of the counting device 81, and the connector 51a includes these terminals.
Note that the connector 37a also includes terminals 71 and 72. Note that the counting device 81 may receive a signal S for controlling its counting function from the outside.
以上の記載から明らかであろうが、本発明の効
果は次の通りである。従来の試験においては、比
較器に大電圧・大電流（例えば100V，30A）を
発生させる必要があつたが、本発明においては、
電圧は数ボルト、電流は数10ミリアンペア程度を
発生させれば良い。従つて試験装置が小形・軽量
となる。これは、別体形の電子式電力量計の特徴
を十分に活かし、半導体素子を含む演算部の試験
を行うようにしたからである。 As will be clear from the above description, the effects of the present invention are as follows. In conventional tests, it was necessary to generate a large voltage and large current (for example, 100V, 30A) in the comparator, but in the present invention,
It is sufficient to generate a voltage of several volts and a current of several tens of milliamps. Therefore, the test device becomes small and lightweight. This is because the features of the separate electronic watt-hour meter were fully utilized to test the arithmetic unit including semiconductor elements.
小形・軽量の試験装置が得られる結果、計器が
取付けてある現場での試験が容易に行なえ、検査
のスピードもアツプする。従来は、大電圧・大電
流を要したため高精度化が困難であつたが、数ボ
ルト・数十ミリアンペアの発生装置でよいから、
容易に高精度化が行える利点がある。また、本発
明はコネクターを利用しているため、個別の端子
への接続の手間がなく作業が簡略にできる利点が
ある。 As a result of being able to obtain a compact and lightweight testing device, testing can be easily performed on-site where instruments are installed, and inspection speed is also increased. In the past, it was difficult to achieve high precision because it required large voltages and large currents, but now a generator of several volts and tens of milliamps is sufficient.
It has the advantage that high precision can be easily achieved. Further, since the present invention uses a connector, there is an advantage that the work can be simplified without the need for connection to individual terminals.
本発明は、上記した実施例に限定されるもので
はなく、三相計器の場合は各相の電圧源・電流源
を備える等種々変形して実施できること言うまで
もない。 It goes without saying that the present invention is not limited to the embodiments described above, and can be implemented with various modifications, such as providing voltage sources and current sources for each phase in the case of a three-phase meter.
第１図は本発明の試験装置に適する電子式電力
量計の構成を示す構成図、第２図は本発明の試験
装置の一実施例を示す構成図、第３図は本発明の
他の実施例を示す構成図、第４図は本発明の更に
他の実施例を示す構成図である。
１０……電気量抽出部、１１……演算部、１２
……電圧変成器、１７……電流変成器、２２……
補助電源部、２５，３７……コネクター、２６…
…乗算器、３１……積分器、３２……分周器、３
３……計数表示器、３４……インターフエース、
４０……試験装置、４１……電圧源、４４……電
流源、４７……位相設定部、４８……補助電源
部、５１……コネクター、６１……ケーブル、７
１，７２……パルス出力端子、８１……計数装
置。
FIG. 1 is a block diagram showing the configuration of an electronic watt-hour meter suitable for the test device of the present invention, FIG. 2 is a block diagram showing an embodiment of the test device of the present invention, and FIG. FIG. 4 is a block diagram showing still another embodiment of the present invention. 10...Electricity extraction section, 11...Calculation section, 12
...Voltage transformer, 17...Current transformer, 22...
Auxiliary power supply section, 25, 37... Connector, 26...
... Multiplier, 31 ... Integrator, 32 ... Frequency divider, 3
3... Counting display, 34... Interface,
40...Test device, 41...Voltage source, 44...Current source, 47...Phase setting section, 48...Auxiliary power supply section, 51...Connector, 61...Cable, 7
1, 72... Pulse output terminal, 81... Counting device.
Claims (1)
り接離可能に別体に構成された電子式電力量計の
演算部の試験装置であつて、演算部の乗算器の電
圧及び電流入力端子にコネクタ接続される疑似電
圧電流用出力端子を有するコネクタ部と、このコ
ネクタ部の各出力端子に接続され、前記乗算部に
疑似電圧及び疑似電流を供給する電圧源及び電流
源と、この電圧電流の位相差を設定する位相設定
器とから構成したことを特徴とする電子式電力量
計用試験装置。1. A testing device for the computing section of an electronic watt-hour meter in which the electricity quantity extraction section and the computing section are constructed separately so that they can be connected to and separated from each other by connecting a connector, and the voltage and current input terminals of the multiplier of the computing section are a connector part having a pseudo voltage and current output terminal connected to the connector; a voltage source and a current source connected to each output terminal of this connector part and supplying a pseudo voltage and a pseudo current to the multiplication part; 1. A test device for an electronic watt-hour meter, comprising a phase setter for setting a phase difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56023164A JPS57137868A (en) | 1981-02-20 | 1981-02-20 | Test equipment for electronic wattmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56023164A JPS57137868A (en) | 1981-02-20 | 1981-02-20 | Test equipment for electronic wattmeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57137868A JPS57137868A (en) | 1982-08-25 |
| JPS6326354B2 true JPS6326354B2 (en) | 1988-05-30 |
Family
ID=12102969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56023164A Granted JPS57137868A (en) | 1981-02-20 | 1981-02-20 | Test equipment for electronic wattmeter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57137868A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01178063U (en) * | 1988-06-07 | 1989-12-20 | ||
| JPH021170U (en) * | 1988-06-14 | 1990-01-08 | ||
| JPH0529719Y2 (en) * | 1988-06-09 | 1993-07-29 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62187868U (en) * | 1986-05-22 | 1987-11-30 | ||
| JPS6416978A (en) * | 1987-07-13 | 1989-01-20 | Toshiba Corp | Testing device for watthour meter |
| CN111722173B (en) * | 2020-05-29 | 2022-06-03 | 宁波三星医疗电气股份有限公司 | Electric energy meter metering fault self-checking method and system |
-
1981
- 1981-02-20 JP JP56023164A patent/JPS57137868A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01178063U (en) * | 1988-06-07 | 1989-12-20 | ||
| JPH0529719Y2 (en) * | 1988-06-09 | 1993-07-29 | ||
| JPH021170U (en) * | 1988-06-14 | 1990-01-08 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57137868A (en) | 1982-08-25 |
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