JPH03242567A - Method and apparatus for detecting breaker connection line - Google Patents
Method and apparatus for detecting breaker connection lineInfo
- Publication number
- JPH03242567A JPH03242567A JP2037366A JP3736690A JPH03242567A JP H03242567 A JPH03242567 A JP H03242567A JP 2037366 A JP2037366 A JP 2037366A JP 3736690 A JP3736690 A JP 3736690A JP H03242567 A JPH03242567 A JP H03242567A
- Authority
- JP
- Japan
- Prior art keywords
- line
- distribution
- signal
- breaker
- response signal
- 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)
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
【発明の詳細な説明】
（産業上の利用分野）
本発明は、負荷に接続されている配電線が配電盤のどの
ブレーカスイッチに接続されているかを負荷側に居て知
ることができるブレーカ接続ライン検出方法及び装置に
関するものである。Detailed Description of the Invention (Industrial Application Field) The present invention provides a breaker connection line that allows the load side to know which breaker switch in the distribution board the distribution line connected to the load is connected to. The present invention relates to a detection method and device.
（従来の技術）
従来、負荷に接続されている配電線が配電盤におけるブ
レーカのどのブレーカスイッチに接続されているかを知
るには、順次ブレーカスイッチを切って負荷側とブレー
カ側との作業員を配置し、テスタで導通をとることによ
り行っていた。(Prior art) Conventionally, in order to find out which breaker switch of the breaker in the distribution board the distribution line connected to the load is connected to, it is necessary to turn off the breaker switches one after another and assign workers to the load side and the breaker side. This was done by checking continuity with a tester.
（発明が解決しようとする課題）
しかしながら、このような接続ラインの検出方法では、
負荷側と配電盤側とにそれぞれ作業員を配置しなければ
ならない問題点があった。また−旦プレー力スイッチを
切らないと検出作業ができない問題点があった。(Problem to be solved by the invention) However, in such a connection line detection method,
There was a problem in that workers had to be assigned to both the load side and the switchboard side. Another problem was that the detection work could not be performed unless the play power switch was first turned off.
本発明の目的は、活線状態でしかも負荷側にだけ作業員
を配置してブレーカ接続ライン検出を行うことができる
ブレーカ接続ライン検出方法及び装置を提供することに
ある。SUMMARY OF THE INVENTION An object of the present invention is to provide a method and apparatus for detecting a breaker connection line in which the breaker connection line can be detected while the line is live and a worker is placed only on the load side.
（課題を解決するための手段）
上記の目的を達成するための本発明手段を説明すると、
次の通りである。(Means for Solving the Problems) The means of the present invention for achieving the above object will be explained as follows.
It is as follows.
請求項（１）に記載のブレーカ接続ライン検出方法は、
負荷側から該負荷に接続される配電線に幹線テスタから
始動信号を送り、配電盤側では該配電線が何番のブレー
カスイッチに接続されているかのライン番号を示す応答
信号を該配電線を介して負荷側に送り、負荷側では前記
幹線テスタで前記応答信号を受けてライン番号を表示す
ることを特徴とする
請求項＋２１に記載のブレーカ接続ライン検出装置は、
配電盤のブレーカの各ブレーカスイッチに接続されてい
る配電線を負荷側から検出するブレーカ接続ライン検出
装置において、
前記配電盤側には、前記負荷側からいずれかの前記配電
線を経て伝送されてくる始動信号を受けて該始動信号が
伝わって来た特定の前記配電線のライン番号信号を送出
するライン検出回路と、予め前記各配電線のライン番号
毎にそのラインの固有情報を記憶しているアドレス情報
設定器と、前記ライン検出回路から出力される前記ライ
ン番号信号を前記アドレス情報設定器に与えて該アドレ
ス情報設定器からそのライン番号信号に応じた前記固有
情報を受け取り前記特定の配電線に応答信号として送出
する情報送出回路と、前記各ブレーカスイッチに接続さ
れている前記各配電線にそれぞれ接続されていて前記始
動信号及び応答信号が前記配電盤の１次側に出て２次側
に回り込むのを防止するブロックフィルタとが設けられ
、前記負荷側にはチェックすべきいずれかの配電線に接
続して前記始動信号を該配電線に送りだすと共に該配電
線を経て送り出されてくる応答信号を受信して表示する
幹線テスタを設けてなるブレーカ接続ライン検出装置で
あることを特徴とする。The breaker connection line detection method according to claim (1) comprises:
The main line tester sends a start signal from the load side to the distribution line connected to the load, and the distribution board side sends a response signal indicating the line number to which breaker switch the distribution line is connected via the distribution line. The breaker connection line detection device according to claim 21, wherein the main line tester receives the response signal and displays the line number on the load side.
In a breaker connection line detection device that detects from a load side a distribution line connected to each breaker switch of a breaker on a distribution board, the distribution board side includes a starting signal transmitted from the load side via any of the distribution lines. a line detection circuit that receives the signal and sends out a line number signal of the specific distribution line to which the start signal has been transmitted; and an address that stores unique information of the line for each line number of each distribution line in advance. an information setter, and the line number signal outputted from the line detection circuit is given to the address information setter, and the unique information corresponding to the line number signal is received from the address information setter and connected to the specific distribution line. An information sending circuit that sends out a response signal and is connected to each of the distribution lines connected to each of the breaker switches, and the starting signal and response signal are output to the primary side of the distribution board and routed to the secondary side. A block filter is provided on the load side to connect to one of the distribution lines to be checked and to send the start signal to the distribution line and also to receive a response signal sent through the distribution line. A breaker connection line detection device is characterized in that it is provided with a trunk line tester that receives and displays the signal.
（作用）
請求項（１）の発明では、幹線テスタで負荷側から該負
荷につながる配電線に始動信号を送るだけで、配電盤か
ら応答信号が帰って来て該配電線がつながっているブレ
ーカスイッチのライン番号を表示するので、負荷側だけ
に作業員を配置してブレーカ接続ラインの検出が行える
。(Function) In the invention of claim (1), when the main line tester simply sends a start signal from the load side to the distribution line connected to the load, a response signal is returned from the distribution panel and the breaker switch to which the distribution line is connected is activated. Since the line number is displayed, a worker can be placed only on the load side to detect the breaker connection line.
しかも、この検出作業は活線状態で行うことができる。Moreover, this detection work can be performed while the line is live.
請求項（２）の発明ては、配電盤側にライン検出回路を
設けているので、負荷側からいずれかの配電線を経て始
動信号が伝送されてくると、その配電線のライン番号信
号を送出することかできる。また、配電盤側には、アド
レス情報設定器を設けているので、各配電線のライン番
号信号に応じた固有情報のメモリを行うことができる。In the invention of claim (2), since a line detection circuit is provided on the distribution board side, when a start signal is transmitted from the load side via any distribution line, the line number signal of that distribution line is sent out. I can do something. Further, since an address information setting device is provided on the power distribution board side, it is possible to memorize unique information corresponding to the line number signal of each power distribution line.
更に、配電盤側には、情報送出回路を設けているので、
ライン検出回路からのライン番号信号に応じてアドレス
情報設定器から固有情報を引き出して、始動信号が送ら
れてきた配電線へ該固有情報を容易に送出て′きる。Furthermore, since an information transmission circuit is installed on the switchboard side,
Unique information is extracted from the address information setter in response to the line number signal from the line detection circuit, and the unique information can be easily sent to the distribution line to which the start signal has been sent.
また、配電盤側で各配電線にはそれぞれブロックフィル
タを接続しているので、始動信号や応答信号が配電盤の
１次側に出て２次側の他の配電線に回り込むのを回避で
きる。Furthermore, since a block filter is connected to each distribution line on the distribution board side, it is possible to prevent the start signal and response signal from going out to the primary side of the distribution board and going around to other distribution lines on the secondary side.
負荷側には、幹線テスタを設けているので、始動信号の
送出と、応答信号の受信とを容易に行え、応答信号の表
示により該配電線がどのブレーカスイッチにつながって
いるか等の表示を容易に行える。Since a main line tester is installed on the load side, it is easy to send the start signal and receive the response signal, and by displaying the response signal, it is easy to display which breaker switch the distribution line is connected to. can be done.
（実施例）
以下、本発明の実施例を図面を参照して詳細に説明する
。(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.
図面は１本発明に係るブレーカ接続ライン検出装置の一
実施例を示したものである６図示のように、配電盤１の
各ブレーカスイッチ２ａ、２ｂ・・・には、配電線３ａ
、３ｂ・・・がそれぞれ接続され、各配電線３ａ、３ｂ
・・・の末端には負荷４ａ、４ｂ・・がそれぞれ接続さ
れている。The drawings show an embodiment of the breaker connection line detection device according to the present invention.6 As shown in the drawings, each breaker switch 2a, 2b, .
, 3b... are connected to each other, and each distribution line 3a, 3b...
Loads 4a, 4b, . . . are connected to the terminals of .
配電盤１測には、負荷４ａ、４ｂ・・・側かいずれかの
配電線３ａ、３ｂ・・・を経て伝送されてくる始動信号
を受けて該始動信号が伝わって来た特定の配電線のライ
ン番号信号ａ、ｂ・・・を送出するライン検出回路５が
設けられている。該ライン検出回路５には、例えば配電
線３ａ、３ｂ・・・のライン数に応じたレジスタが並設
されていて、対応する番号のレジスタを同じ番号の配電
線に接続することにより、該レジスタに始動信号が入力
されると、該レジスタに登録されているライン番号信号
を送出するようになっている。The switchboard 1 measurement includes receiving a starting signal transmitted via the distribution lines 3a, 3b... on either the load 4a, 4b... side, and checking the specific distribution line to which the starting signal was transmitted. A line detection circuit 5 is provided which sends out line number signals a, b, . . . . In the line detection circuit 5, for example, registers corresponding to the number of lines of the distribution lines 3a, 3b, etc. are arranged in parallel, and by connecting the registers with the corresponding numbers to the distribution lines with the same number, the registers can be changed. When a start signal is input to the register, the line number signal registered in the register is sent out.
また、配電盤１側には、予め各配電線３ａ、３ｂ・・・
のライン番号ごとにそのラインの固有情報を記憶してい
るアドレス情報設定器６が設けられている。該アドレス
情報設定器６に記憶する固有情報としては、例えばライ
ン番号、ブレーカ能力情報、ブレーカ履歴情報等がある
。さらに、配電盤１側には、ライン検出回路５から出力
されるライン番号信号をアドレス情報設定器６に与えて
そのライン番号信号に応じた固有情報を受け取り、始動
信号が送られてきた特定の配電線に該固有情報を応答信
号として送り出す情報送出回路７が設けられている。Moreover, each power distribution line 3a, 3b...
For each line number, an address information setting device 6 is provided which stores unique information for that line. The unique information stored in the address information setting device 6 includes, for example, a line number, breaker capacity information, breaker history information, and the like. Further, on the switchboard 1 side, the line number signal output from the line detection circuit 5 is given to the address information setting device 6, and unique information corresponding to the line number signal is received, and the specific An information sending circuit 7 is provided on the electric wire to send out the specific information as a response signal.
また、配電盤側には各ブレーカスイッチ２ａ２ｂ・・・
に接続されている各配電線３ａ、３ｂ・・・にそれぞれ
接続されていて始動信号及び応答信号が配電盤ｌの１次
側に出て２次側に回り込むのを防止するブロックフィル
タ８ａ、８ｂ・・・がそれぞれ接続されている。これら
ブロックフィルタ８ａ。In addition, each breaker switch 2a2b...
Block filters 8a, 8b, . . . are connected to the distribution lines 3a, 3b, . ... are connected to each other. These block filters 8a.
８ｂ・・・は、帯域消去フィルタからなっていて、始動
信号と応答信号の同周波の通過は防止するが、その他の
周波数は通過させるように動作する。The reference numerals 8b, . . . are band-elimination filters that operate to prevent the same frequencies of the start signal and the response signal from passing through, but to allow other frequencies to pass.
負荷側には、チェックすべきいずれかの配電線、例えば
配電線３ａに接続（接触による接続も含む〉してパルス
信号よりなる始動信号を該配電線３ａに送り出すと共に
該配電線３ａを経て送り返されてくる応答信号を受信し
て表示部９ａに表示する幹線テスタ９が設けられている
。表示部９ａは、例えは液晶表示器で形成されている。On the load side, it is connected to any distribution line to be checked, for example, the distribution line 3a (including connection by contact), and a starting signal consisting of a pulse signal is sent to the distribution line 3a and sent back via the distribution line 3a. A main line tester 9 is provided which receives an incoming response signal and displays it on a display section 9a.The display section 9a is formed of, for example, a liquid crystal display.
次に１このようなブレーカ接続ライン検出装置によりブ
レーカ接続ラインの検出方法について説明する。Next, a method for detecting a breaker connection line using such a breaker connection line detection device will be described.
例えば、負荷４ａにつながる配電線３ａがどのフレーカ
スイッチに接続されているかの検出について説明する。For example, detection of which breaker switch the distribution line 3a connected to the load 4a is connected to will be described.
負荷４ａ側で配電線３ａに幹線テスタ９を接続し、始動
信号を該配電線３ａに送る。この始動信号は、該配電線
３ａに流れる交流信号に重畳されて配電盤１側に至り、
ライン検出回路５で検出される。ライン検出回路５は、
始動信号が受信されると該始動信号が送られてきた配電
線３ａのライン番号信号ａを情報送出回路７に送る。情
報送出回路７は、ライン検出回路５から送られてくるラ
イン番号信号ａをアドレス情報設定器６に与えて該アド
レス情報設定器６からそのライン番号信号ａに応じた固
有情報を受け取り、始動信号が送られてきた配電線３ａ
に該固有情報を応答信号として送出する。負荷４ａ側で
は、配電線３ａから送られてくる応答信号を幹線テスタ
９で受け、該応答信号を表示部９ａに文字として表示す
る。この表示部９ａに表示される応答信号により、該配
電線３ａがつながっているブレーカスイッチ２ａのライ
ン番号とか、ブレーカ能力情報とか、ブレーカ履歴情報
がわかる。ライン番号として管理用図面、設計図での表
現方法に従った記号を付けることにより、直接的にライ
ンの状況が判別可能となる。ブレーカ能力情報として、
漏電遮断機能、６００Ａ、２２５Ａ等のトリップ電流等
を知ることにより、その配電線の持つ能力が分かり、現
場での結論を早めることができる。A main line tester 9 is connected to the power distribution line 3a on the load 4a side, and a starting signal is sent to the power distribution line 3a. This starting signal is superimposed on the AC signal flowing through the power distribution line 3a and reaches the power distribution board 1 side,
It is detected by the line detection circuit 5. The line detection circuit 5 is
When the starting signal is received, the line number signal a of the distribution line 3a to which the starting signal was sent is sent to the information sending circuit 7. The information sending circuit 7 supplies the line number signal a sent from the line detection circuit 5 to the address information setting device 6, receives unique information corresponding to the line number signal a from the address information setting device 6, and generates a start signal. Distribution line 3a to which
The unique information is sent as a response signal. On the load 4a side, a main line tester 9 receives a response signal sent from the distribution line 3a, and displays the response signal as characters on a display section 9a. From the response signal displayed on the display section 9a, the line number of the breaker switch 2a to which the distribution line 3a is connected, breaker capacity information, and breaker history information can be determined. By attaching symbols as line numbers in accordance with the representation method in management drawings and design drawings, the status of the line can be directly determined. As breaker capacity information,
By knowing the earth leakage interrupting function, trip current of 600A, 225A, etc., you can understand the capability of the distribution line and can quickly reach a conclusion on the spot.
ブレーカ履歴情報として、ブレーカ取替時期、配電線取
替え時期等を知ることにより、工事による変更等をチェ
ックでき、図面との混乱時に決定情報となる。また、新
設、既設の判別が即座にできる。By knowing the timing of breaker replacement, distribution line replacement, etc. as breaker history information, changes due to construction can be checked, and it becomes decision information in case of confusion with drawings. In addition, it is possible to immediately distinguish between new and existing installations.
なお、ライン検出回路５、アドレス情報設定器６、情報
送出回路７、ブロックフィルタ８ａ、８ｂ・・・は、予
め配電盤１側に接続しておき、そのままの状態で負荷４
ａ、４ｂ・・・側からの始動信号の送出に備えて待機さ
せておく。Note that the line detection circuit 5, address information setting device 6, information sending circuit 7, block filters 8a, 8b, etc. are connected to the switchboard 1 side in advance, and the load 4 is connected in that state.
It is kept on standby in preparation for sending out a start signal from the a, 4b, . . . sides.
（発明の効果〉
以上説明したように、本発明に係るブレーカ接続ライン
検出方法及び装置によれば、下記のような効果を得るこ
とができる。(Effects of the Invention) As explained above, according to the breaker connection line detection method and device according to the present invention, the following effects can be obtained.
請求項（１）に記載の発明によれば、幹線テスタで負荷
側から該負荷につながる配電線に始動信号を送るだけで
、配電盤側から応答信号が帰って来て該配電線につなが
っているブレーカスイッチのライン番号を表示するので
、負荷側だけに作業員を配置してブレーカ接続ラインの
検出を行うことができる。しかも、この検出作業は活線
状態で行える利点がある。According to the invention described in claim (1), by simply sending a start signal from the load side to the distribution line connected to the load using the main line tester, a response signal is returned from the distribution board side and connected to the distribution line. Since the line number of the breaker switch is displayed, a worker can be placed only on the load side to detect the breaker connection line. Moreover, there is an advantage that this detection work can be performed while the line is live.
請求項（２）の発明では、配電盤側にライン検出回路を
設けているので、負荷側からいずれかの配電線を経て始
動信号が伝送されてくると、その配電線のライン番号信
号を送出するこができる。In the invention of claim (2), since the line detection circuit is provided on the distribution board side, when a start signal is transmitted from the load side via any distribution line, the line number signal of that distribution line is sent out. I can row.
また配電盤側にアドレス情報設定器を設けているので、
各配電線のライン番号信号に応じた固有情報の記憶を容
易に行うことができる。In addition, since an address information setting device is installed on the switchboard side,
Unique information corresponding to the line number signal of each distribution line can be easily stored.
更に、配電盤側に情報送出回路を設けているので、ライ
ン検出回路からのライン番号信号に応じてアドレス情報
設定器から固有情報を引出して、始動信号が送られてき
た配電線へ該固有情報を送出するのを容易に行うことが
できる。Furthermore, since an information transmission circuit is provided on the distribution board side, unique information is extracted from the address information setting device in response to the line number signal from the line detection circuit, and the unique information is transmitted to the distribution line to which the start signal has been sent. It can be easily sent.
また、配電盤側で各配電線にはそれぞれブロックフィル
タを接続しているので、始動信号や応答信号が配電盤の
１次側に出て２次側の他の配電線に回り込むのを確実に
回避することができる。In addition, since a block filter is connected to each distribution line on the switchboard side, it is possible to reliably prevent the start signal and response signal from going out to the primary side of the switchboard and going around to other distribution lines on the secondary side. be able to.
一方、負荷側には幹線テスタを設けているので、始動信
号の送出と、応答信号の受信とを容易に行うことができ
、且つ応答信号の表示により該配電線がどのブレーカス
イッチにつながっているか等の表示を容易に行うことが
できる。On the other hand, since a main line tester is installed on the load side, it is easy to send out a starting signal and receive a response signal, and the display of the response signal shows which breaker switch the distribution line is connected to. etc. can be easily displayed.
第１図は、本発明に係るブレーカ接続ライン検出装置の
一実施例の配線図である。
■・・・配電盤、２ａ、２ｂ・・・ブレーカスイッチ、
３ａ、３ｂ・・−配電線、４ａ、４ｂ−・・負荷、５・
・・ライン検出回路、６・・・アドレス情報設定器、７
・・・＋ｆｔＷ１送出回路、
８ａ、８ｂ・ブロックフィルタ、
９・・・幹線テスタ、９ａ・・・表示部。FIG. 1 is a wiring diagram of an embodiment of a breaker connection line detection device according to the present invention. ■...Switchboard, 2a, 2b...Breaker switch,
3a, 3b...-distribution line, 4a, 4b--load, 5-
...Line detection circuit, 6...Address information setting device, 7
...+ftW1 sending circuit, 8a, 8b, block filter, 9... Main line tester, 9a... Display section.
Claims (2)
タから始動信号を送り、配電盤側では該配電線が何番の
ブレーカスイッチに接続されているかのライン番号を示
す応答信号を該配電線を介して負荷側に送り、負荷側で
は前記幹線テスタで前記応答信号を受けてライン番号を
表示することを特徴とするブレーカ接続ライン検出方法
。(1) The main line tester sends a start signal from the load side to the distribution line connected to the load, and the distribution board side sends a response signal indicating the line number to which breaker switch the distribution line is connected to the distribution line. A method for detecting a breaker connection line, characterized in that the response signal is sent to a load side via an electric wire, and on the load side, the main line tester receives the response signal and displays a line number.
れている配電線を負荷側から検出するブレーカ接続ライ
ン検出装置において、 前記配電盤側には、前記負荷側からいずれかの前記配電
線を経て伝送されてくる始動信号を受けて該始動信号が
伝わって来た特定の前記配電線のライン番号信号を送出
すライン検出回路と、予め前記各配電線のライン番号毎
にそのラインの固有情報を記憶しているアドレス情報設
定器と、前記ライン検出回路から出力される前記ライン
番号信号を前記アドレス情報設定器に与えて該アドレス
情報設定器からそのライン番号信号に応じた前記固有情
報を受け取り前記特定の配電線に応答信号として送出す
る情報送出回路と、前記各ブレーカスイッチに接続され
ている前記各配電線にそれぞれ接続されていて前記始動
信号及び応答信号が前記配電盤の１次側に出て２次側に
回り込むのを防止するブロックフィルタとが設けられ、
前記負荷側にはチェックすべきいずれかの配電線に接続
して前記始動信号を該配電線に送りだすと共に該配電線
を経て送り出されてくる応答信号を受信して表示する幹
線テスタを設けたことを特徴としてなるブレーカ接続ラ
イン検出装置。(2) In a breaker connection line detection device that detects, from the load side, a distribution line connected to each breaker switch of a breaker on a distribution board, a signal is transmitted to the distribution board side from the load side via any of the distribution lines. a line detection circuit that receives a starting signal and sends out a line number signal of the specific distribution line to which the starting signal has been transmitted; an address information setting device that supplies the line number signal outputted from the line detection circuit to the address information setting device, receives the unique information corresponding to the line number signal from the address information setting device, and receives the specific information from the address information setting device; an information sending circuit that sends out a response signal to the distribution line; and an information sending circuit that is connected to each of the distribution lines that is connected to each of the breaker switches, and the starting signal and response signal are output to the primary side of the distribution board and the secondary circuit It is equipped with a block filter to prevent it from going around to the side.
A main line tester is provided on the load side, which is connected to one of the distribution lines to be checked and sends the start signal to the distribution line, and also receives and displays a response signal sent through the distribution line. A breaker connection line detection device featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2037366A JP3037356B2 (en) | 1990-02-20 | 1990-02-20 | Method and apparatus for checking breaker connection line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2037366A JP3037356B2 (en) | 1990-02-20 | 1990-02-20 | Method and apparatus for checking breaker connection line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03242567A true JPH03242567A (en) | 1991-10-29 |
| JP3037356B2 JP3037356B2 (en) | 2000-04-24 |
Family
ID=12495531
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2037366A Expired - Fee Related JP3037356B2 (en) | 1990-02-20 | 1990-02-20 | Method and apparatus for checking breaker connection line |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3037356B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007170939A (en) * | 2005-12-21 | 2007-07-05 | Hioki Ee Corp | Survey device of feeding wiring path |
| JP2010011585A (en) * | 2008-06-25 | 2010-01-14 | Fujitsu Ltd | Tester and information processor |
-
1990
- 1990-02-20 JP JP2037366A patent/JP3037356B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007170939A (en) * | 2005-12-21 | 2007-07-05 | Hioki Ee Corp | Survey device of feeding wiring path |
| JP2010011585A (en) * | 2008-06-25 | 2010-01-14 | Fujitsu Ltd | Tester and information processor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3037356B2 (en) | 2000-04-24 |
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