JPS6440218U

JPS6440218U -

Info

Publication number: JPS6440218U
Application number: JP13668587U
Authority: JP
Priority date: 1987-09-07
Filing date: 1987-09-07
Publication date: 1989-03-10
Anticipated expiration: 2002-09-07
Also published as: JPH0537613Y2

Description

[Brief explanation of the drawing]

図はこの考案の実施例を示し、第１図はこの考
案を用いてケーブルの死活判別を行う状態を示す
回路図、第２図はこの考案を用いてケーブルの相
判別を行う状態を示す回路図、第３図Ａ，Ｂは夫
々従来例を示し、Ａ図はケーブルの死活判別の構
成図、Ｂ図はケーブルの相判別の構成図である。なお図中１は送電端用機器、２は受電端用機器
、３はケーブル、４は回線、５は発振器、６は抵
抗、７は第１の切替スイツチ、８は接地線、９は
第２の切替スイツチ、１２はリレー、１３は回線
、１４は抵抗、１５は第３の切替スイツチ、１６
は接地線、１７は第４の切替スイツチ、２０はリ
レーである。 The figure shows an embodiment of this invention. Figure 1 is a circuit diagram showing a state in which this invention is used to determine whether a cable is alive or dead, and Figure 2 is a circuit diagram showing a state in which a cable phase is determined using this invention. Figures 3A and 3B show conventional examples, respectively, where Figure A is a block diagram for determining whether the cable is dead or alive, and Figure B is a diagram showing the configuration for determining the phase of the cable. In the figure, 1 is the power transmitting end equipment, 2 is the power receiving end equipment, 3 is the cable, 4 is the line, 5 is the oscillator, 6 is the resistor, 7 is the first changeover switch, 8 is the grounding wire, and 9 is the second 12 is a relay, 13 is a line, 14 is a resistor, 15 is a third changeover switch, 16
is a grounding wire, 17 is a fourth changeover switch, and 20 is a relay.

Claims

[Scope of utility model registration request]

It consists of equipment for the sending end and equipment for the receiving end.The equipment for the sending end is provided with an oscillator in the line connecting two phase terminals at one end of the cable, and is connected in parallel with this oscillator via a first changeover switch. A grounding line is branched from this line via a second changeover switch, and these changeover switches are configured to be interlocked by a relay of a current detection circuit having a CT connected in series with the oscillator. The equipment includes a line connecting two phase terminals at the other end of the cable, a resistor connected in parallel to this line via a third changeover switch, and a grounding line connected to this line via a fourth changeover switch. An oscillator with a sense meter, characterized in that lines are branched and these changeover switches are interlocked by a relay of a current detection circuit having a CT provided on the line.