JPS5926533Y2 - Power plug cord with earth leakage indicator - Google Patents
Power plug cord with earth leakage indicatorInfo
- Publication number
- JPS5926533Y2 JPS5926533Y2 JP17644480U JP17644480U JPS5926533Y2 JP S5926533 Y2 JPS5926533 Y2 JP S5926533Y2 JP 17644480 U JP17644480 U JP 17644480U JP 17644480 U JP17644480 U JP 17644480U JP S5926533 Y2 JPS5926533 Y2 JP S5926533Y2
- Authority
- JP
- Japan
- Prior art keywords
- power plug
- earth leakage
- plug cord
- resistor
- leakage indicator
- 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
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Insulated Conductors (AREA)
Description
【考案の詳細な説明】
本考案は漏電表示装置付電源プラグコードに関するもの
である。[Detailed Description of the Invention] The present invention relates to a power plug cord with an earth leakage indicator.
現在家庭で使用されている交流用電気機械器具（例えば
電気洗濯機、電気釜、電気冷蔵庫）や又、ハンディタイ
プの電動工具等は電源プラグコードが本体に接続され、
使用に際しては屋内配線の適所のコンセントに電源プラ
グコードが差込まれ、電源プラグコードの長さの範囲内
で固定、もしくは適所の位置に移動し使用されている。AC electrical appliances (e.g. electric washing machines, electric kettles, electric refrigerators), handheld power tools, etc. currently used in homes have power plug cords connected to the main body.
When in use, the power plug cord is inserted into an outlet at a suitable location in the indoor wiring, and is either fixed within the length of the power plug cord or moved to a suitable position.
その使用状態も特に一般家庭ではアースを必要とする電
気機械器具でもアースをとらずに使用している例が多い
。Regarding the usage conditions, particularly in ordinary homes, there are many cases where electrical equipment that requires grounding is used without being grounded.
一般に交流用電気機械器具等の漏電による感電防止のた
め低圧電路においては、１部の交流用電気機械器具につ
いては、その施設場所によって漏電しゃ断器の設置が義
務付けされているが、それでも交流用電気機械器具等の
個々の微弱な漏電を簡単に見つけるのは困難である。In general, in order to prevent electric shock due to leakage of AC electrical equipment, etc., it is mandatory to install an earth leakage breaker for some AC electrical equipment in low-voltage circuits depending on the location of the facility. It is difficult to easily find individual weak electrical leaks in machinery and equipment.
交流用電気機械器具（特に漏電しゃ断器の設置が義務付
けされていない施設場所で使用する交流用電気機械器具
）の微弱な漏電をネオンランプの表示により簡単に見つ
け日常より安全に使用することが出来るよう考案したも
のが、この漏電表示装置付電源プラグコードで電源プラ
グコードのプラグ内部又は電線の１部に漏電表示装置を
エポキシ樹脂でモールドし埋設したものである。The neon lamp display allows you to easily detect weak current leaks in AC electrical equipment (particularly AC electrical equipment used in facilities where the installation of an earth leakage breaker is not required) and use it more safely. What we have devised is this power plug cord with an earth leakage indicator, in which the earth leakage indicator is molded with epoxy resin and buried inside the plug of the power plug cord or in a part of the electric wire.
尚電線の１部に漏電表示装置を埋設したものは、漏電表
示装置付接続用電線としても使用出来る。In addition, a wire in which a leakage indicator is embedded in a part of the wire can also be used as a connecting wire with an earth leakage indicator.
本考案は抵抗３ａとネオン管１を直列に接続し、これに
抵抗３ｂを並列に接続したものの１端を、電源プラグコ
ードの電源線間に第１整流器２ａと第２整流器２ｂの極
性が相互に逆接続となるように接続した接続点に直列に
接続し他端を接地線９ａ、９ｂに接続した漏電表示装置
を電源プラグコードのプラグ内部又は電線の１部にネオ
ン管１の表示がわかるように絶縁体６にて埋設した漏電
表示装置付電源プラグコードである。In the present invention, a resistor 3a and a neon tube 1 are connected in series, and a resistor 3b is connected in parallel to the resistor 3b. Connect the earth leakage display device in series to the connection point connected in reverse connection to the ground wires 9a and 9b with the other end connected to the ground wires 9a and 9b.You can see the neon tube 1 inside the plug of the power plug cord or on a part of the wire. This is a power plug cord with an earth leakage indicator buried in an insulator 6.
本考案によれば、この漏電表示装置付電源プラグコード
に接続された交流用電気機械器具の充電部１２と金属ケ
ース１３との間の絶縁抵抗１４ ａ又は他方の絶縁抵抗
１４ｂの不良による微弱な漏電をネオン管１の表示によ
り発見することが出来る。According to the present invention, there is a weak resistance due to a defect in the insulation resistance 14a or the other insulation resistance 14b between the charging part 12 of the AC electric appliance connected to the power supply plug cord with earth leakage display device and the metal case 13. Electrical leakage can be detected by the display on the neon tube 1.
又接地クリップ１１にて接地をする場合その接地１５が
確実なものであるかどうかもネオン管１の表示を見て判
断出来る。Furthermore, when grounding is performed using the grounding clip 11, whether or not the grounding 15 is reliable can be determined by looking at the display on the neon tube 1.
又高電圧の直流絶縁抵抗計で交流用電気機械器具の絶縁
抵抗を測定する場合には、第１整流器２ａ、第２整流器
２ｂにより電気的にクリップされるため絶縁抵抗測定に
は漏電表示装置による影響はない。In addition, when measuring the insulation resistance of AC electrical equipment using a high-voltage DC insulation resistance meter, it is necessary to use an earth leakage display device to measure the insulation resistance because it is electrically clipped by the first rectifier 2a and the second rectifier 2b. There is no effect.
しかも取付け、取扱い等も在来公知の電源プラグコード
と全く同等に扱い得るので至便である。Moreover, it is very convenient to install and handle as it can be handled in exactly the same way as a conventionally known power plug cord.
又本考案においては第３図の様に抵抗３ａとネオン管１
を直列に接続し、これに抵抗３ｂを並列に接続したもの
のｌ端を電源プラグコードの電源線間に第１整流器２ａ
と第２整流器２ｂの極性が相互に逆接続となるように接
続した接続点に直列に接続し他端を交流用電気機械器具
等の接地線９ａ、９ｂに接続しであるので接地クリップ
１１にて接地が出来ない場合交流用電気機械器具の充電
部１２の非接地側と交流用電気機械器具の金属ケース１
３との間の絶縁抵抗１４ ａが悪くなると電源の接地側
４ｂより、第２整流器２ｂ、第２抵抗３ｂ、交流用電気
機械器具の金属ケース１３、電源の非接地側４ａの順に
微少電流が流れる。In addition, in the present invention, as shown in Fig. 3, a resistor 3a and a neon tube 1 are connected.
are connected in series, and a resistor 3b is connected in parallel, and the l end of the first rectifier 2a is connected between the power wires of the power plug cord.
and the second rectifier 2b are connected in series to the connection point connected so that the polarities are reversed to each other, and the other end is connected to the grounding wires 9a and 9b of AC electrical equipment, etc., so the grounding clip 11 is connected. If grounding is not possible, connect the non-grounded side of the live part 12 of the AC electric machine and the metal case 1 of the AC electric machine.
When the insulation resistance 14a between 3 and 3 deteriorates, a minute current flows from the ground side 4b of the power supply, through the second rectifier 2b, the second resistor 3b, the metal case 13 of the AC electrical appliance, and the non-grounded side 4a of the power supply, in this order. flows.
この場合絶縁抵抗１４ ａが悪くなればなる程微少電流
が増加して第２抵抗３ｂの端子電圧がネオン管１の放電
開始電圧以上になりネオン管１が点灯し漏電を表示する
。In this case, as the insulation resistance 14a deteriorates, the minute current increases, and the terminal voltage of the second resistor 3b becomes higher than the discharge starting voltage of the neon tube 1, causing the neon tube 1 to light up, indicating a leakage.
同様に交流用電気機械器具の充電部１２の接地側と交流
用電気機械器具の金属ケース１３との間の絶縁抵抗１４
ｂが悪くなると電源の非接地側４ａより第１整流器２ａ
、第２抵抗３ｂ、交流用電気機械器具の金属ケース１３
、電源の接地側４ｂの順に微少電流が流れる。Similarly, the insulation resistance 14 between the grounding side of the charging part 12 of the AC electrical machine and the metal case 13 of the AC electrical machine
When b becomes worse, the first rectifier 2a is connected to the non-grounded side 4a of the power supply.
, second resistor 3b, metal case 13 of AC electric machine appliance
, a small current flows in the order of the ground side 4b of the power supply.
絶縁抵抗１４ ｂが悪くなればなる程微少電流が増加し
て第２抵抗３ｂの端子電圧がネオン管１の放電開始電圧
以上になりネオン管１が点灯し漏電を表示する。As the insulation resistance 14b deteriorates, the minute current increases, and the terminal voltage of the second resistor 3b becomes higher than the discharge starting voltage of the neon tube 1, and the neon tube 1 lights up to indicate a leakage.
従って交流用電気機械器具の充電部１２の非接地側と交
流用電気機械器具の金属ケース１３との間に絶縁抵抗１
４ａ又は交流用電気機械器具の充電部１２の接地側と交
流用電気機械器具の金属ケース１３との間の絶縁抵抗１
４ｂのいずれの絶縁不良による微弱な漏電でもネオン管
１が点灯し漏電を表示する特徴を持っている。Therefore, an insulation resistance of 1
4a or insulation resistance 1 between the ground side of the charging part 12 of the AC electric machine and the metal case 13 of the AC electric machine
4b, the neon tube 1 lights up to indicate the current leakage even if there is a weak current leakage due to poor insulation.
又第２抵抗３ｂの値を選択することによりネオン管１が
点灯する絶縁抵抗１４ａ、１４ｂの値を設定することが
出来る。Furthermore, by selecting the value of the second resistor 3b, the values of the insulation resistors 14a and 14b at which the neon tube 1 lights up can be set.
４ａ、４ｂは電源プラグの差込刃、５ａ、５ｂはモール
ドケース、７ａ、７ｂ、７Ｃは接続箇所、８ａ、８ｂは
電源リード線、１０は電源コード、１５は接地抵抗、１
６は受電用変圧器である。4a, 4b are power plug insertion blades, 5a, 5b are molded cases, 7a, 7b, 7C are connection points, 8a, 8b are power lead wires, 10 is a power cord, 15 is a grounding resistor, 1
6 is a power receiving transformer.
尚第４図に示す他の実施例は、第１整流器２ａと第２整
流器２ｂの極性が相互に逆接続となるように接続した接
続点に第１抵抗３ａを直列に接続し、ネオン管１と第２
抵抗３ｂを並列に接続したものの１端を第１抵抗３ａの
未接続側に直列に、他端を接地線９ａ、９ｂに接続した
もので前記の絶縁抵抗不良による漏電電流が同じ値の場
合第４図は、第３図に比較してネオン管１の明かるさを
増すことが出来る。In another embodiment shown in FIG. 4, a first resistor 3a is connected in series to the connection point of the first rectifier 2a and the second rectifier 2b so that their polarities are reversely connected, and the neon tube 1 and second
When the resistors 3b are connected in parallel, one end is connected in series to the unconnected side of the first resistor 3a, and the other end is connected to the grounding wires 9a and 9b, and the leakage current due to the insulation resistance defect is the same value, the In FIG. 4, the brightness of the neon tube 1 can be increased compared to FIG. 3.
図面は本考案の一実施例を示すもので、第１図は漏電表
示装置をプラグに設けた場合の断面図、第２図は電線の
１部に設けた場合の断面図、第３図は電気回路図、第４
図は他の実施例の電気回路図である。
１・・・・・・ネオン管、２ａ、２ｂ・・・・・・整流
器、３ａ。
３ｂ・・・・・・抵抗、４ａ、４ｂ・・・・・・電源プ
ラグ差込刃、５ａ、５ｂ・・・・・・モールドケース、
６・・・・・・絶縁体、７ａ、 ７ｂ、 ７Ｃ・・
・・・・接続箇所、８ａ、８ｂ・・・・・・電源リード
線、９ａ、９ｂ・・・・・・接地線、１０・・・・・・
電源コード、１１・・・・・・接地クリップ、１２・・
・・・・交流用電気機械器具の充電部、１３・・・・・
・交流用電気機械器具の金属ケース、１４ａ、１４ｂ・
・・・・・交流用電気機械器具の絶縁抵抗、１５・・・
・・・接地抵抗、１６・・・・・・受電用変圧器。The drawings show one embodiment of the present invention. Figure 1 is a cross-sectional view when the earth leakage indicator is installed on a plug, Figure 2 is a cross-sectional view when it is installed on a part of an electric wire, and Figure 3 is a cross-sectional view when it is installed on a part of an electric wire. Electrical circuit diagram, 4th
The figure is an electrical circuit diagram of another embodiment. 1... Neon tube, 2a, 2b... Rectifier, 3a. 3b...Resistor, 4a, 4b...Power plug insertion blade, 5a, 5b...Mold case,
6...Insulator, 7a, 7b, 7C...
...Connection point, 8a, 8b...Power lead wire, 9a, 9b...Ground wire, 10...
Power cord, 11... Ground clip, 12...
...Charging part of AC electrical equipment, 13...
・Metal case for AC electrical equipment, 14a, 14b・
...Insulation resistance of AC electrical equipment, 15...
...Grounding resistance, 16...Power receiving transformer.
Claims (1)
抵抗３ｂを並列に接続したものの１端を、電源プラグコ
ードの電源線間に第１整流器２ａと第２整流器２ｂの極
性が相互に逆接続となるように接続した接続点に直列に
接続し、他端を接地線９ａ、９ｂに接続した漏電表示装
置を電源プラグコードのプラグ内部又は電線の１部にネ
オン管１の表示がわかるように絶縁体６にて埋設した漏
電表示装置付電源プラグコード。The first resistor 3a and the neon tube 1 are connected in series, and the second
One end of the resistor 3b connected in parallel is connected in series to a connection point connected between the power lines of the power plug cord so that the polarities of the first rectifier 2a and the second rectifier 2b are reversely connected to each other, A power plug cord with an earth leakage indicator, in which an earth leakage indicator with the other end connected to the grounding wires 9a and 9b is embedded inside the plug of the power plug cord or in a part of the wire with an insulator 6 so that the neon tube 1 can be seen. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17644480U JPS5926533Y2 (en) | 1980-12-09 | 1980-12-09 | Power plug cord with earth leakage indicator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17644480U JPS5926533Y2 (en) | 1980-12-09 | 1980-12-09 | Power plug cord with earth leakage indicator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5798692U JPS5798692U (en) | 1982-06-17 |
| JPS5926533Y2 true JPS5926533Y2 (en) | 1984-08-01 |
Family
ID=29969445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17644480U Expired JPS5926533Y2 (en) | 1980-12-09 | 1980-12-09 | Power plug cord with earth leakage indicator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5926533Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997007568A1 (en) * | 1995-08-11 | 1997-02-27 | Shoshin Idosaka | Method and apparatus for signal generation to check for electric connection, and safety connector |
-
1980
- 1980-12-09 JP JP17644480U patent/JPS5926533Y2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997007568A1 (en) * | 1995-08-11 | 1997-02-27 | Shoshin Idosaka | Method and apparatus for signal generation to check for electric connection, and safety connector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5798692U (en) | 1982-06-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4288743A (en) | Fault indicator operable from a remote excitation source through a uniformly distributed impedance cable | |
| CA2250564C (en) | Current flow monitor for heating cables | |
| US4929887A (en) | Electrical outlet monitor | |
| US20100317222A1 (en) | Electrical power extension cord having continuous electrical current and ground monitor | |
| US2474407A (en) | Polarity indicator plug | |
| CN101452035A (en) | Electric appliance earthing status monitoring circuit | |
| US3368146A (en) | Electrical safety tester having a plurality of switches for setting up tests | |
| JPS5926533Y2 (en) | Power plug cord with earth leakage indicator | |
| US6246225B1 (en) | Apparatus for detecting a completed electrical circuit and testing an electrical output receptacle | |
| US20130271115A1 (en) | Power supply efficiency measurement device | |
| GB2034055A (en) | Continuity Testing Circuit for Three-wire Electrical Power Systems | |
| CN215375727U (en) | Safety detection device and electronic equipment | |
| CN213905748U (en) | Plug-and-play power consumption protection device and socket electric appliance | |
| US4021732A (en) | Convertible electric tester for use with a flashlight and including a jack plug with tubular shunt | |
| CN112421314A (en) | Plug-and-play power consumption protection device and socket electric appliance | |
| KR100266704B1 (en) | Grounding device | |
| JP5550062B2 (en) | Outlet with grounding electrode | |
| CN206818792U (en) | Low voltage motor insulating resistor detecting circuit | |
| CN205544082U (en) | Wall bushing with relay protection | |
| CN104977494A (en) | Method for detecting electric leakage of electric appliance, and electric appliance | |
| JPS57104868A (en) | Checking method of disconnected grounding | |
| CN211017625U (en) | Power socket | |
| CN217305329U (en) | Grounding detection circuit and electric equipment | |
| US20100285689A1 (en) | Power strip with 110 and 220 volt outlets | |
| CN203774709U (en) | Power supply distribution unit and connecting module |