JPH05191913A - Three-wire type sense meter - Google Patents
Three-wire type sense meterInfo
- Publication number
- JPH05191913A JPH05191913A JP4002325A JP232592A JPH05191913A JP H05191913 A JPH05191913 A JP H05191913A JP 4002325 A JP4002325 A JP 4002325A JP 232592 A JP232592 A JP 232592A JP H05191913 A JPH05191913 A JP H05191913A
- Authority
- JP
- Japan
- Prior art keywords
- lead wire
- cable
- diode
- lead
- wire
- 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.)
- Granted
Links
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、地中配電系統の機器間
を連絡する三相ケーブルの工事ならびに保守作業時に行
う導通試験、色出し（相合せ）、絶縁抵抗測定、および
ケーブル死活線判別等のケーブルの確認作業を行う場合
に使用する三線式センスメーターに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuity test, coloration (phase matching), insulation resistance measurement, and cable dead-line discrimination, which is carried out during construction and maintenance work of a three-phase cable for connecting devices of an underground distribution system. The present invention relates to a three-wire type sense meter used when checking cables such as.
【０００２】[0002]
【従来の技術】図９および図10は、従来の三線式センス
メーターの一例を示すもので、図中ａは円筒状の本体、
ｂ，ｃ，ｄは、この本体ａからひき出されているリード
線で、それぞれ端部に鰐口クリップｅが接続されてい
る。そして例えば、リード線ｂと、そのクリップｅは赤
色に着色されており、リード線ｃと、そのクリップｅは
黒色に着色されており、リード線ｄと、そのクリップｅ
は緑色に着色されている。2. Description of the Related Art FIGS. 9 and 10 show an example of a conventional three-wire type sense meter, in which a is a cylindrical main body,
Reference numerals b, c, and d are lead wires pulled out from the main body a, and crocodile clips e are connected to their respective ends. For example, the lead wire b and its clip e are colored red, the lead wire c and its clip e are colored black, and the lead wire d and its clip e are colored.
Is colored green.
【０００３】図10は、図９の本体ａの内部の結線状態を
示すもので、三本のリード線ｂ，ｃ，ｄは、それぞれ星
型に結線されており、赤色のリード線ｂには数ＭΩ〜数
十ＭΩの抵抗Ｒが挿入されている。FIG. 10 shows a connection state inside the main body a of FIG. 9. The three lead wires b, c and d are respectively connected in a star shape, and the red lead wire b is connected. A resistance R of several MΩ to several tens MΩ is inserted.
【０００４】[0004]
【発明が解決しようとする課題】配電用の地中機器を新
設する場合等において、ケーブルの確認作業を行う場合
には、主に前記した導通試験、色出し、絶縁抵抗測定、
およびケーブル死活線判別が一連作業として行われてい
るが、従来のセンスメーターでは、導通試験、および色
出ししか行なえなかった。すなわち絶縁抵抗測定時には
センスメーターを取り外さねばならず、ケーブル死活線
判別時には短絡リード線を接続しなければならないた
め、一連作業でありながら作業効率が非常に悪いという
問題点があった。[Problems to be Solved by the Invention] When a cable is to be checked in the case of newly installing underground equipment for power distribution, etc., the continuity test, coloration, insulation resistance measurement,
The cable life and death line discrimination is performed as a series of work, but with the conventional sense meter, only the continuity test and the color development can be performed. That is, the sense meter must be removed when measuring the insulation resistance, and the short-circuit lead wire must be connected when the cable dead line is identified, so there is a problem that the work efficiency is extremely poor even though it is a series of work.
【０００５】[0005]
【課題を解決するための手段】上述の問題点を解決する
ため本発明においては、星型に結線した三本のリード線
のアース側リード線に、他の二本のリード線に対して順
方向にダイオードを挿入し、前記した他の二本のリード
線の中の一本のリード線に、このリード線以外のリード
線に対して順方向にダイオードを挿入すると共に、この
ダイオードと並列に抵抗を挿入して三線式センスメータ
ーを構成する。In order to solve the above-mentioned problems, in the present invention, the ground side lead wire of three lead wires connected in a star shape is connected to the other two lead wires in order. Insert a diode in the direction of the lead wire, insert a diode in the forward direction with respect to the lead wire other than this lead wire in one of the other two lead wires described above, and in parallel with this diode. A resistor is inserted to form a three-wire sense meter.
【０００６】[0006]
【作用】上述のように本発明においては、アース側リー
ド線と、他の一本のリード線にそれぞれ他のリード線に
対して順方向にダイオードを挿入したから、絶縁抵抗測
定時にセンスメーターを取り外したのと同じ状態にする
ことができ、またケーブル死活線判別時に短絡リード線
としての機能を果たすことができる。したがって本発明
の三線式センスメーターによれば、ケーブルの確認作業
の効率を大幅に高めることができる。As described above, in the present invention, the diode is inserted in the earth side lead wire and the other one lead wire in the forward direction with respect to the other lead wire respectively. It can be put in the same state as when it is removed, and can also function as a short-circuit lead wire when determining the dead line of a cable. Therefore, according to the three-wire type sense meter of the present invention, the efficiency of the cable confirmation work can be significantly increased.
【０００７】[0007]
【実施例】以下、図１〜図４について本発明の実施例を
説明する。図中１は箱型の本体、２，３，４は、この本
体１からひき出されているリード線で、それぞれ端部に
鰐口クリップ５が接続されている。そして例えば、リー
ド線２と、そのクリップ５は黒色に着色されており、リ
ード線３と、そのクリップ５は赤色に着色されており、
リード線４と、そのクリップ５は緑色に着色されてい
る。Embodiments of the present invention will be described below with reference to FIGS. In the figure, 1 is a box-shaped main body, and 2, 3 and 4 are lead wires pulled out from the main body 1, and an crocodile clip 5 is connected to each end. And, for example, the lead wire 2 and its clip 5 are colored black, the lead wire 3 and its clip 5 are colored red,
The lead wire 4 and its clip 5 are colored green.
【０００８】本実施例においては、図３および図４に示
すように、星型に結線した三本のリード線２，３，４の
中のアース側リード線４に、他の二本のリード線２，３
に対して順方向にダイオードＤ1 を挿入し、前記した他
の二本のリード線２，３の中の一本のリード線３に、こ
のリード線以外のリード線２，４に対して順方向にダイ
オードＤ2 を挿入すると共に、このダイオードＤ2 と並
列に５ＭΩの抵抗Ｒを挿入して三線式センスメーターＡ
を構成する。なお、抵抗Ｒは、数ＭΩ〜数十ＭΩが適当
である。In this embodiment, as shown in FIGS. 3 and 4, of the three lead wires 2, 3 and 4 connected in a star shape, the earth side lead wire 4 is connected to the other two lead wires. Lines 2 and 3
, The diode D 1 is inserted in the forward direction, and one lead wire 3 among the other two lead wires 2 and 3 described above is forwarded to the lead wires 2 and 4 other than this lead wire. The diode D 2 is inserted in the direction, and the resistor R of 5 MΩ is inserted in parallel with the diode D 2 to detect the three-wire type sense meter
Make up. The resistance R is preferably several MΩ to several tens of MΩ.
【０００９】つぎに、上述のように構成した本発明装置
の使用方法を説明する。まず、導通試験は、配電系中の
機器間が確実にケーブルで接続されているかどうか、す
なわち断線の有無をチエックするものである。また色出
し（相合せ）は、機器間を結ぶ三相ケーブルが、各相間
違いなく接続されているかを確認するものである。Next, a method of using the device of the present invention constructed as described above will be explained. First, the continuity test checks whether or not the devices in the power distribution system are reliably connected by a cable, that is, the presence or absence of disconnection. Coloring (matching) confirms that the three-phase cables connecting the devices are correctly connected for each phase.
【００１０】図５は、導通試験および色出しをする場合
における本発明の三線式センスメーターＡの使用方法を
示す回路図で、Ｂ，Ｃは配電系中の機器の端子板であ
り、Ｄは絶縁抵抗計である。FIG. 5 is a circuit diagram showing a method of using the three-wire type sense meter A of the present invention when conducting a continuity test and color development. B and C are terminal plates of equipment in a power distribution system, and D is It is an insulation resistance tester.
【００１１】また、絶縁抵抗測定は、ケーブルの絶縁劣
化を測定するもので、図６はその方法を示す回路図であ
る。図中前記符号と同一の符号は同等のものを示す。The insulation resistance measurement is for measuring insulation deterioration of the cable, and FIG. 6 is a circuit diagram showing the method. In the figure, the same reference numerals as those used above denote the same components.
【００１２】また、ケーブル死活線判別は、埋設されて
いる複数のケーブルの中から作業を行うために、停電さ
せたケーブルにパルスを送り、それを受信することで判
別するもので、図７がその方法を示す回路図である。図
中前記符号と同一の符号は同等のものを示しており、ま
たＥはケーブル死活線判別装置の発信器、Ｆはサーチコ
イル、ＧはサーチコイルＦと接続したケーブル死活線判
別装置の受信器である。Further, the cable dead-line discrimination is performed by sending a pulse to the cable that has lost power and receiving it in order to carry out work from a plurality of buried cables. It is a circuit diagram which shows the method. In the figure, the same reference numerals as those used in the previous description represent the same items, E is a transmitter of the cable dead-line identification device, F is a search coil, and G is a receiver of the cable dead-line identification device connected to the search coil F. Is.
【００１３】また図８は、地中機器の新設を行う方法を
示すもので、図中Ｈ，Ｉは既設の地中機器で、６はこれ
らの機器Ｈ，Ｉ間を結ぶケーブル、７，８はケーブル６
と共に埋設されている他のケーブル、Ｊ，Ｋは機器Ｈ，
Ｉから配電している需要家であり、Ｌは新設しようとす
る地中機器、Ｍはその機器Ｌから配電する新規需要家で
ある。FIG. 8 shows a method for newly installing underground equipment. In the drawing, H and I are existing underground equipment, 6 is a cable connecting these equipments H and I, and 7 and 8 are shown. Is cable 6
Other cables, J and K, which are buried with
I is a customer who distributes electricity from I, L is an underground equipment to be newly installed, and M is a new customer who distributes electricity from the equipment L.
【００１４】ケーブル６の途中に新規に地中機器Ｌを設
けるには、ケーブル６のイ、ロ間を停電させた後、ハの
個所でケーブル６の死活判別を行う。すなわち、機器Ｈ
側のケーブル端末イの黒相に三線式センスメーターＡの
黒リード線を接続し、赤相に赤リード線を接続し、ケー
ブルアースに緑リード線を接続する。また機器Ｉ側のケ
ーブル端末ロに、ケーブル死活線判別装置Ｅの出力コー
ドを黒相および赤相に接続してパルスを発信させる。In order to newly install the underground equipment L in the middle of the cable 6, after a power failure is caused between the cable 6 and the cable 6, the life and death of the cable 6 is determined at the position of c. That is, the device H
Connect the black lead wire of the three-wire type sense meter A to the black phase of the cable end a on the side, connect the red lead wire to the red phase, and connect the green lead wire to the cable ground. Further, the output code of the cable dead / live line discriminating apparatus E is connected to the black phase and the red phase and the pulse is transmitted to the cable terminal B on the device I side.
【００１５】つぎに機器Ｌの新設個所で埋設ケーブルを
掘り出し、ケーブル死活線判別装置ＧのサーチコイルＦ
で、パルスが送られている当該ケーブル６を判別する。
判別後ハの位置で当該ケーブル６を切断し、この切断し
たケーブル６のイとニとの間、およびホとロとの間で導
通試験、色出し（相合せ）、絶縁抵抗測定をそれぞれ行
う。すなわち、機器Ｈ側の三線式センスメーターはその
ままで、機器Ｌのケーブル端末ニの黒相〜アース間、お
よび赤相〜アース間を絶縁抵抗計で測定して確認を行な
う。Next, the buried cable is dug out at a new location of the device L, and the search coil F of the cable dead / live line discrimination device G is extracted.
Then, the cable 6 to which the pulse is sent is determined.
After the determination, the cable 6 is cut at the position of C, and a continuity test, coloration (matching), and insulation resistance measurement are performed between the cut cables A and D, and between the cut cables B and B. .. That is, the three-wire sense meter on the device H side is left as it is, and the confirmation is performed by measuring with the insulation resistance meter between the black phase and the ground and between the red phase and the ground of the cable terminal D of the device L.
【００１６】[0016]
【発明の効果】上述のように本発明においては、アース
側リード線４と、他の一本のリード線３にそれぞれ他の
リード線に対して順方向にダイオードＤ1 , Ｄ2 を挿入
したから、絶縁抵抗測定時にセンスメーターを取り外し
たのと同じ状態にすることができ、またケーブル死活線
判別時に短絡リード線としての機能を果たすことができ
る。したがって本発明の三線式センスメーターによれ
ば、ケーブルの確認作業の効率を大幅に高めることがで
きるというすぐれた効果が得られる。As described above, in the present invention, the diodes D 1 and D 2 are respectively inserted in the earth side lead wire 4 and the other lead wire 3 in the forward direction with respect to the other lead wire. Therefore, the same state as when the sense meter is removed at the time of measuring the insulation resistance can be achieved, and the function as a short-circuit lead wire can be fulfilled at the time of determining the dead line of the cable. Therefore, according to the three-wire type sense meter of the present invention, it is possible to obtain an excellent effect that the efficiency of the cable confirmation work can be significantly increased.
【図１】本発明の三線式センスメーターの外観を示す斜
視図である。FIG. 1 is a perspective view showing an appearance of a three-wire type sense meter of the present invention.
【図２】図１の平面図である。FIG. 2 is a plan view of FIG.
【図３】図２の本体の内部を示す平面図である。FIG. 3 is a plan view showing the inside of the main body of FIG.
【図４】図３の電気回路図である。FIG. 4 is an electric circuit diagram of FIG.
【図５】導通試験および色出し方法を示す説明図であ
る。FIG. 5 is an explanatory diagram showing a continuity test and a coloring method.
【図６】絶縁抵抗測定方法を示す説明図である。FIG. 6 is an explanatory diagram showing an insulation resistance measuring method.
【図７】ケーブル死活線判別方法を示す説明図である。FIG. 7 is an explanatory diagram showing a method for identifying a cable dead line.
【図８】地中機器を新設する方法を示す説明図である。FIG. 8 is an explanatory diagram showing a method of newly installing an underground device.
【図９】従来の三線式センスメーターの外観図である。FIG. 9 is an external view of a conventional three-wire sense meter.
【図１０】図９の電気回路図である。10 is an electric circuit diagram of FIG. 9. FIG.
１ 本体 ２，３，４ リード線 ５ 鰐口クリップ Ｄ1 ，Ｄ2 ダイオード Ｒ 抵抗 Ａ 本発明の三線式センスメーター1 main body 2,3,4 lead wire 5 crocodile clip D 1 , D 2 diode R resistance A three-wire type sense meter of the present invention
Claims (1)
側リード線に、他の二本のリード線に対して順方向にダ
イオードを挿入し、前記した他の二本のリード線の中の
一本のリード線に、このリード線以外のリード線に対し
て順方向にダイオードを挿入すると共に、このダイオー
ドと並列に抵抗を挿入したことを特徴とする三線式セン
スメーター。1. A diode is inserted into the earth side lead wire of three lead wires connected in a star shape in the forward direction with respect to the other two lead wires, and the other two lead wires are connected. A three-wire type sense meter characterized in that a diode is inserted in a forward direction with respect to a lead wire other than this lead wire in one lead wire, and a resistor is inserted in parallel with the diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04002325A JP3115671B2 (en) | 1992-01-09 | 1992-01-09 | Three-wire sense meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04002325A JP3115671B2 (en) | 1992-01-09 | 1992-01-09 | Three-wire sense meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05191913A true JPH05191913A (en) | 1993-07-30 |
| JP3115671B2 JP3115671B2 (en) | 2000-12-11 |
Family
ID=11526170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04002325A Expired - Lifetime JP3115671B2 (en) | 1992-01-09 | 1992-01-09 | Three-wire sense meter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3115671B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010233884A (en) * | 2009-03-31 | 2010-10-21 | Fukuda Denshi Co Ltd | Alligator clip cover |
| WO2013031019A1 (en) * | 2011-09-02 | 2013-03-07 | トヨタ自動車株式会社 | Fuel supply device for internal combustion engine |
-
1992
- 1992-01-09 JP JP04002325A patent/JP3115671B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010233884A (en) * | 2009-03-31 | 2010-10-21 | Fukuda Denshi Co Ltd | Alligator clip cover |
| WO2013031019A1 (en) * | 2011-09-02 | 2013-03-07 | トヨタ自動車株式会社 | Fuel supply device for internal combustion engine |
| CN103748353A (en) * | 2011-09-02 | 2014-04-23 | 丰田自动车株式会社 | Fuel supply device for internal combustion engine |
| JPWO2013031019A1 (en) * | 2011-09-02 | 2015-03-23 | トヨタ自動車株式会社 | Fuel supply device for internal combustion engine |
| CN103748353B (en) * | 2011-09-02 | 2016-04-13 | 丰田自动车株式会社 | The fuel supplying device of internal-combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3115671B2 (en) | 2000-12-11 |
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