JP2003051239A - Electrical leakage protective device - Google Patents

Electrical leakage protective device

Info

Publication number
JP2003051239A
JP2003051239A JP2001237190A JP2001237190A JP2003051239A JP 2003051239 A JP2003051239 A JP 2003051239A JP 2001237190 A JP2001237190 A JP 2001237190A JP 2001237190 A JP2001237190 A JP 2001237190A JP 2003051239 A JP2003051239 A JP 2003051239A
Authority
JP
Japan
Prior art keywords
overvoltage
power supply
protection device
leakage protection
leakage
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.)
Pending
Application number
JP2001237190A
Other languages
Japanese (ja)
Other versions
JP2003051239A5 (en
Inventor
Kazuyoshi Nakao
和義 中尾
Koji Ikeda
広治 池田
Ryuta Oishi
竜太 大石
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toto Ltd
Original Assignee
Toto Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toto Ltd filed Critical Toto Ltd
Priority to JP2001237190A priority Critical patent/JP2003051239A/en
Publication of JP2003051239A publication Critical patent/JP2003051239A/en
Publication of JP2003051239A5 publication Critical patent/JP2003051239A5/ja
Pending legal-status Critical Current

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  • Breakers (AREA)

Abstract

PROBLEM TO BE SOLVED: To prevent destruction by application of an overvoltage to a protection-subjected equipment 16 by cutting off at least a part of power supply or all the power supply to the protection-subjected equipment 16, in case the overvoltage is applied to a power supply plug 6, and further make it unnecessary that numerous troubles and hours or the like for disassembling for parts replacement, the parts replacement, reassembling, action confirmation or the like in case an overvoltage preventing equipment is destroyed in case the overvoltage is applied to the overvoltage-preventing equipment. SOLUTION: An overvoltage protecting device is installed at the inside of a plug type electrical leakage protective device 1, prepared as a separate body from the protection-subjected equipment 16, and the protection-subjected equipment 16 is protected from being broken down due to the overvoltage.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は漏電保護に係り、過
電圧が印加された場合に保護対象機器に対して過電圧の
印加を防止することに好適な過電圧印加防止機能付き漏
電保護装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earth leakage protection device, and more particularly to an earth leakage protection device having an overvoltage application preventing function, which is suitable for preventing an overvoltage from being applied to a device to be protected when an overvoltage is applied.

【0002】[0002]

【従来の技術】図6に従来の例を示す。漏電保護の対象
である温水洗浄便座109と漏電保護装置101は別体
になっている。電源プラグ6に単相2線式の電力が供給
されている。温水洗浄便座109に電力を供給する電力
供給線108はフェライトリング103を通過してい
る。前記温水洗浄便座にて漏電が発生した場合、接地側
の配線を通って戻る電流が減少する。そのとき、フェラ
イトリング103を横断している横断電流に差成分(不
平衡電流)が発生し、前記不平衡電流に比例した磁界が
発生する。そのとき、フェライトリング103に密結合
した電流検出線107に電流が発生し、発生した電流を
漏電検出・遮断IC106にて検出する。前記漏電検出
・遮断IC106で所定以上の電流を検出、すなわち漏
電を検出した場合には遮断回路動作信号線105に信号
を発生させ、遮断装置102をOFFして前記温水洗浄
便座109への通電を遮断して漏電による火災や使用者
への感電を防止する。
2. Description of the Related Art FIG. 6 shows a conventional example. The warm water washing toilet seat 109, which is the subject of leakage protection, and the leakage protection device 101 are separate bodies. Single-phase two-wire power is supplied to the power plug 6. A power supply line 108 that supplies power to the warm water washing toilet seat 109 passes through the ferrite ring 103. When an electric leakage occurs in the warm water washing toilet seat, the current returning through the ground side wiring decreases. At that time, a difference component (unbalanced current) is generated in the crossing current crossing the ferrite ring 103, and a magnetic field proportional to the unbalanced current is generated. At that time, a current is generated in the current detection line 107 tightly coupled to the ferrite ring 103, and the generated current is detected by the leakage detection / cutoff IC 106. When a current greater than a predetermined value is detected by the leakage detection / cutoff IC 106, that is, when a leakage is detected, a signal is generated in the cutoff circuit operation signal line 105, the cutoff device 102 is turned off, and the hot water washing toilet seat 109 is energized. Cut off to prevent fire and electric shock to users due to electric leakage.

【0003】[0003]

【発明が解決しようとする課題】従来の漏電保護装置で
は、電源プラグ104に過電圧が印加された場合でも、
遮断回路102を動作させることができず、保護対象機
器109へ過電圧をそのまま印加してしまい、保護対象
機器の破壊を招く場合があった。また、保護対象機器に
過電圧保護装置を内蔵させると、過電圧印加によって過
電圧保護装置内の素子が破壊されて過電圧保護をするタ
イプの保護装置の場合、過電圧保護装置が破壊されると
保護対象機器内の過電圧保護装置又は素子を交換する必
要があるが、保護対象機器の分解、部品交換、再組立
て、動作確認など多数の手間と時間がかかることがあっ
た。本発明は、上記課題を解決するためになされたもの
で、本発明の目的は、電源プラグ104に過電圧が印加
された場合に、保護対象機器への少なくとも一部の電力
供給かすべての電力供給を遮断することで、保護対象機
器を過電圧の印加による破壊を防止することにある。ま
た、第2の目的は、過電圧防止装置が過電圧を印加され
た場合に、過電圧防止装置が破壊される場合において、
部品交換の分解、部品交換、再組立て、動作確認など多
数の手間と時間を不用とすることにある。
In the conventional leakage protection device, even when an overvoltage is applied to the power plug 104,
In some cases, the cutoff circuit 102 cannot be operated, and the overvoltage is applied to the protection target device 109 as it is, resulting in destruction of the protection target device. In addition, if an overvoltage protection device is built into the protection target device, if the overvoltage protection device is a type of protection device that destroys the elements in the overvoltage protection device by overvoltage application, if the overvoltage protection device is destroyed, the protection target device Although it is necessary to replace the overvoltage protection device or the element, it takes a lot of time and labor such as disassembling the equipment to be protected, replacing parts, reassembling, and checking the operation. The present invention has been made to solve the above problems, and an object of the present invention is to supply at least a part of power or all power to a protected device when an overvoltage is applied to a power plug 104. This is to prevent the device to be protected from being damaged by the application of overvoltage. A second object is to destroy the overvoltage protection device when the overvoltage protection device is applied with an overvoltage.
It is to eliminate a lot of trouble and time such as disassembly of parts replacement, parts replacement, reassembly, and operation confirmation.

【0004】[0004]

【課題を解決するための手段】上記目的を達成するため
に請求項1は、漏電検出回路と遮断回路を有する漏電保
護装置において、前記漏電保護装置は保護対象機器と別
体に構成され、前記漏電保護装置に過電圧が印加された
場合には保護対象機器への電力供給を停止する装置を持
つことを特徴とする漏電保護装置を持つので、過電圧に
よって電力が供給される電力供給線に接続されている保
護対象機器内の回路(図示なし)を過電圧の印加による
破壊を防ぐことができる。なお、保護対象機器への電力
供給線が複数の場合には、全ての電力供給線を遮断する
か、少なくとも1本の電力供給線を遮断すればよい。
In order to achieve the above object, a first aspect of the present invention is an earth leakage protection device having an earth leakage detection circuit and an interruption circuit, wherein the earth leakage protection device is constructed separately from a device to be protected. Since the leakage protection device has a device that stops the power supply to the equipment to be protected when an overvoltage is applied to the leakage protection device, it is connected to the power supply line to which power is supplied by the overvoltage. It is possible to prevent the circuit (not shown) in the protection target device from being destroyed by the application of overvoltage. If there are a plurality of power supply lines to the protection target device, all power supply lines may be cut off, or at least one power supply line may be cut off.

【0005】また、請求項2は漏電保護装置において、
電力供給線の各相の少なくとも一つの相間にサージ吸収
素子と電流ヒューズを直列に少なくとも一組接続し、前
記サージ吸収素子と前記電流ヒューズの接続部に保護対
象機器への電力供給線の内少なくとも一つを接続し、前
記漏電保護装置に過電圧が印加された場合に前記電流ヒ
ューズを断線させ前記接続部に接続された前記電力供給
線への電力供給を停止することができるので、過電圧が
印加された場合でも前記電流ヒューズと前記サージ吸収
素子の接続点から電力の供給を受けている前記保護対象
機器内の回路(図示なし)を雷サージ等による過大な電
圧の印加による電子回路の破壊を防止することがででき
Further, claim 2 relates to a leakage protection device,
At least one set of a surge absorbing element and a current fuse is connected in series between at least one phase of each phase of the power supply line, and at least a power supply line to the protection target device is provided at a connection portion between the surge absorbing element and the current fuse. If one is connected, and the overvoltage is applied to the earth leakage protection device, the current fuse can be disconnected to stop the power supply to the power supply line connected to the connection portion, so that the overvoltage is applied. Even when the electric current is connected to the surge absorbing element, a circuit (not shown) in the device to be protected, which is supplied with electric power from the connection point of the electric current fuse and the surge absorbing element, may be destroyed by the application of an excessive voltage due to a lightning surge or the like. Can be prevented

【0006】また、請求項3は、漏電保護装置に過電圧
が印加された場合には保護対象機器への電力供給を停止
する前記の装置、が作動したことを検知して漏電保護装
置を作動させるので、保護対象機器への通電を遮断して
過電圧から保護対象機器の電気回路が破壊されぬよう守
ることができる。
According to a third aspect of the present invention, when the overvoltage is applied to the leakage protection device, the device for stopping the power supply to the equipment to be protected is actuated and the leakage protection device is activated. Therefore, it is possible to protect the electric circuit of the protection target device from being destroyed from the overvoltage by cutting off the power supply to the protection target device.

【0007】また、請求項4は、漏電保護装置は漏電検
出回路と遮断回路を内蔵し、前記過電圧保護用のヒュー
ズが切断した場合に前記遮断回路を強制的に動作させ、
前記電力供給線への電力の供給を停止して保護対象機器
への過電圧の印加を防止できるので、保護対象機器への
すべての通電を遮断して過電圧から電気回路の破壊から
守ることができる。また、遮断回路を兼用しているので
回路構成が簡潔になり、漏電保護装置と保護対象機器と
の結線も通常の電力供給線のみで事足りる。
According to a fourth aspect of the present invention, the earth leakage protection device has an earth leakage detection circuit and an interruption circuit built-in, forcibly operating the interruption circuit when the fuse for overvoltage protection is cut off,
Since it is possible to prevent the overvoltage from being applied to the protection target device by stopping the supply of power to the power supply line, it is possible to prevent all the energization to the protection target device and protect the electric circuit from being destroyed from the overvoltage. In addition, since the circuit also serves as a cutoff circuit, the circuit configuration is simplified, and it is sufficient to connect the leakage protection device and the protection target device only with a normal power supply line.

【0008】[0008]

【発明の実施の形態】以下、発明の実施の形態を図に基
づいて説明する。発明の一実施例である図1について説
明する。電源プラグ6に印加された電流は遮断回路2を
通ってフェライトリング3を通過する。通常、遮断回路
2は遮断していない状態であり、電源プラグ6に印加さ
れた電流を保護対象機器16に流している状態である。
このフェライトリング3を通過する電流が不平衡状態に
なった場合、すなわち保護対象機器16で漏電が発生し
た場合にはフェライトリング3に取り付けてある漏電検
出線9に電流が流れ、これを漏電検出・遮断回路8にて
検出し遮断回路信号線7を介してただちに遮断回路2を
動作させ電力供給を停止させる。次に、電源プラグ6に
過電圧が印加された場合には、電圧測定点4にて監視さ
れた電圧が、所定の電圧を超えると過電圧検出・遮断装
置10がただちに遮断回路信号線11を介して電力供給
線(1)12、電力供給線(2)13、電力供給線
(3)14の内、少なくとも一つをただちに遮断し、保
護対象機器16への過電圧の印加を防止する。なお、1
7は漏電保護装置1と保護対象機器16とを電気的に連
結する、電力供給線(1)12、電力供給線(2)1
3、電力供給線(3)14を保護する被覆である。
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. An embodiment of the invention will be described with reference to FIG. The current applied to the power plug 6 passes through the interruption circuit 2 and the ferrite ring 3. Normally, the shutoff circuit 2 is not shut off, and the current applied to the power plug 6 is being sent to the protection target device 16.
When the current passing through the ferrite ring 3 is in an unbalanced state, that is, when a leakage occurs in the protection target device 16, a current flows through the leakage detection line 9 attached to the ferrite ring 3 to detect the leakage. Detecting by the cutoff circuit 8, the cutoff circuit 2 is immediately operated via the cutoff circuit signal line 7 to stop the power supply. Next, when an overvoltage is applied to the power plug 6 and the voltage monitored at the voltage measurement point 4 exceeds a predetermined voltage, the overvoltage detection / interruption device 10 immediately outputs the signal via the interruption circuit signal line 11. Immediately shut off at least one of the power supply line (1) 12, the power supply line (2) 13, and the power supply line (3) 14 to prevent application of an overvoltage to the protection target device 16. 1
Reference numeral 7 denotes a power supply line (1) 12 and a power supply line (2) 1 that electrically connect the leakage protection device 1 and the protection target device 16.
3. A coating that protects the power supply line (3) 14.

【0009】次に、発明の一実施例である図2について
説明する。電源プラグ6に単相2線式の電力が供給され
ている。この相間にバリスタ23、電流ヒューズ24が
直列に接続されており、前記バリスタ23と前記電流ヒ
ューズ24の接続点に電力供給線(1)26が接続され
ている。保護対象機器32で漏電が発生した場合はフェ
ライトリング25を通る電力線に不平衡電流が生じ、漏
電検出線30を介して漏電保護・遮断回路29から遮断
信号が遮断回路22に送られ、保護対象機器32への電
力供給を停止し漏電を保護する。この電源プラグ6に過
電圧が加えられた場合、前記バリスタ23はサージ吸収
素子として働くので過電圧によって一時的にショート状
態になる。このとき直列に接続された前記ヒューズ24
が過電流によって溶断するので電力供給線(1)26へ
の電力供給が停止される。そのため、保護対象機器32
内部で前記電力供給線(1)26以降に接続された内部
回路(図示なし)は過電圧から保護される。
Next, FIG. 2 showing an embodiment of the invention will be described. Single-phase two-wire power is supplied to the power plug 6. A varistor 23 and a current fuse 24 are connected in series between these phases, and a power supply line (1) 26 is connected to a connection point between the varistor 23 and the current fuse 24. When a leakage occurs in the protection target device 32, an unbalanced current is generated in the power line passing through the ferrite ring 25, and a leakage signal is sent from the leakage protection / cutoff circuit 29 to the cutoff circuit 22 via the leakage detection line 30 to be protected. The power supply to the device 32 is stopped to protect the leakage. When an overvoltage is applied to the power plug 6, the varistor 23 functions as a surge absorbing element, so that the varistor 23 is temporarily short-circuited by the overvoltage. At this time, the fuse 24 connected in series
Is melted by an overcurrent, the power supply to the power supply line (1) 26 is stopped. Therefore, the protection target device 32
An internal circuit (not shown) internally connected to the power supply line (1) 26 and thereafter is protected from overvoltage.

【0010】次に、発明の一実施例である図3について
説明する。電源プラグ6に単相2線式の電力が供給され
ている。この相間にバリスタ45、電流ヒューズ46が
直列に接続されている。また、相間に抵抗43、抵抗4
4が直列に接続されており、前記抵抗の各々を接続して
いる接続点と前記バリスタと前記電流ヒューズの接続点
が接続されており、さらに漏電保護・遮断回路50の漏
電検出部に接続されている。尚、抵抗43と抵抗44は
同一の抵抗値であり、高抵抗値である。保護対象機器5
3で漏電が発生した場合はフェライトリング47を通る
電力線に不平衡電流が生じ、漏電検出線51を介して漏
電保護・遮断回路50から遮断信号が遮断回路42に送
られ、保護対象機器53への電力供給を停止し漏電を保
護する。この電源プラグ6に過電圧が加えられた場合、
前記バリスタ45はサージ吸収素子として働くので過電
圧によって一時的にショート状態になる、このとき直列
に接続された前記ヒューズ46が過電流によって溶断す
る。前記抵抗43と前記抵抗44の接続点は各々の抵抗
値が同値であるために通常では0Vであるが、前記ヒュ
ーズ46が溶断すると前記接続点に電源プラグ6に印加
されている電圧の半分の電圧が現れる。この電流を漏電
検出・遮断回路50の漏電検出部に入力しているので、
過電圧が印加されると漏電検出時と同様に漏電遮断機4
2を用いて保護対象機器53への電力供給を停止するこ
とができる。そのため、保護対象機器53内部は過電圧
から保護される。
Next, FIG. 3, which is an embodiment of the invention, will be described. Single-phase two-wire power is supplied to the power plug 6. A varistor 45 and a current fuse 46 are connected in series between the phases. Also, the resistor 43 and the resistor 4 are provided between the phases.
4 are connected in series, the connection point connecting each of the resistors, the connection point of the varistor and the current fuse are connected, and further connected to the leakage detection unit of the leakage protection / cutoff circuit 50. ing. The resistors 43 and 44 have the same resistance value and a high resistance value. Equipment to be protected 5
When a leakage occurs at 3, an unbalanced current is generated in the power line passing through the ferrite ring 47, a leakage signal is sent from the leakage protection / cutoff circuit 50 to the cutoff circuit 42 via the leak detection line 51, and is sent to the protection target device 53. To stop the power supply to protect against leakage. If an overvoltage is applied to this power plug 6,
Since the varistor 45 functions as a surge absorbing element, the varistor 45 is temporarily short-circuited by an overvoltage. At this time, the fuse 46 connected in series is blown by an overcurrent. The connection point between the resistor 43 and the resistor 44 is normally 0 V because the resistance values of the resistors 43 and 44 are the same, but when the fuse 46 is blown, half of the voltage applied to the power plug 6 is applied to the connection point. The voltage appears. Since this current is input to the leakage detection unit of the leakage detection / cutoff circuit 50,
When an overvoltage is applied, the earth leakage circuit breaker 4
2 can be used to stop the power supply to the protection target device 53. Therefore, the inside of the protection target device 53 is protected from overvoltage.

【0011】次に、発明の一実施例である図4について
説明する。電源プラグ6に単相2線式の電力が供給され
ている。また、保護対象機器73の接地線(アース線)
74は漏電保護装置61に接続されており、この前記保
護対象機器73の接地を前記漏電保護装置61から取る
ことが出来る。また、電力線68,69と接地線74は
一つのラインに束ねることができ、美観上好ましいもの
にすることができる。この図4では接地線74が前記漏
電保護装置61に接続されている電源線の形に描かれて
いるが、接地線の取り出し方法はプラグの形式でも良い
ことは言うまでもない。なお、図中、62は電力供給線
遮断装置、63,64は抵抗、65はサージ吸収素子で
あるバリスタ、66は電流ヒューズ、67はフェライト
リング、70は漏電検出・遮断装置、71は漏電検出
線、75は被覆であり、それぞれ前述した実施例と同じ
動作を行う。
Next, FIG. 4, which is an embodiment of the invention, will be described. Single-phase two-wire power is supplied to the power plug 6. In addition, the ground wire (ground wire) of the protection target device 73
74 is connected to the leakage protection device 61, and the grounding of the protection target device 73 can be taken from the leakage protection device 61. Further, the power lines 68 and 69 and the ground line 74 can be bundled into one line, which is aesthetically pleasing. In FIG. 4, the ground line 74 is drawn in the form of a power line connected to the earth leakage protection device 61, but it goes without saying that the ground line may be taken out in the form of a plug. In the figure, 62 is a power supply line interruption device, 63 and 64 are resistors, 65 is a varistor which is a surge absorbing element, 66 is a current fuse, 67 is a ferrite ring, 70 is a leakage detection / interruption device, and 71 is a leakage detection. Wires and 75 are coatings, which perform the same operations as those in the above-described embodiments.

【0012】次に、本発明の一実施例である図5につい
て説明する。漏電保護装置120は電源プラグ6により
一般家庭の壁などにあるコンセントに接続する。また電
力線123により保護対象機器(図示無し)に電力を供
給すると同時に、保護対象機器に漏電が発生した場合、
あるいは前記電源プラグ6に過電圧が印加された場合に
は自動的に保護対象機器への通電を遮断すると同時に、
動作ランプ122を点灯させ、漏電保護装置120が作
動していることを報知する。漏電、あるいは過電圧印加
状態から通常の状態に復帰した場合には復帰ボタン12
1を押して前記保護対象機器への通電を再開することが
できる。
Next, FIG. 5, which is an embodiment of the present invention, will be described. The leakage protection device 120 is connected to an outlet on the wall of a general household by the power plug 6. In addition, when power is supplied to the protection target device (not shown) through the power line 123 and at the same time a leakage occurs in the protection target device,
Alternatively, when an overvoltage is applied to the power plug 6, the power to the protection target device is automatically cut off at the same time,
The operation lamp 122 is turned on to notify that the earth leakage protection device 120 is operating. Return button 12 when the normal state is restored from the leakage or overvoltage application state
By pressing 1, the power supply to the protection target device can be restarted.

【0013】漏電保護装置120は、保護対象機器とは
別体とされた構成である。そのため、過電圧がかかり漏
電保護装置が破壊されても、コンセントへの差込部分を
交換するだけで簡単に漏電保護装置120の取替えがで
きるので、部品交換の作業性に優れる。
The earth leakage protection device 120 is constructed separately from the equipment to be protected. Therefore, even if an overvoltage is applied and the earth leakage protection device is destroyed, the earth leakage protection device 120 can be easily replaced by simply replacing the insertion portion into the outlet, which is excellent in workability of parts replacement.

【0014】尚、上記の説明中、電力供給線を例示のた
め3本としたが1本以上の複数本であれば本発明の趣旨
が損なわれないことは明らかである。また、例示のため
単相2線式を図に示したが、単相3線式、三相3線式な
どでも本発明の趣旨が損なわれないことは明らかであ
る。
In the above description, the number of power supply lines is three for the sake of illustration, but it is clear that the gist of the present invention is not impaired if one or more power supply lines are provided. Further, although the single-phase two-wire system is shown in the figure for the purpose of illustration, it is clear that the gist of the present invention is not impaired even in the single-phase three-wire system, the three-phase three-wire system and the like.

【0015】[0015]

【発明の効果】本発明は上記構成により次の効果を発揮
する。
The present invention has the following effects due to the above configuration.

【0016】請求項1では、漏電検出回路と遮断回路を
有する漏電保護装置において、前記漏電保護装置は保護
対象機器と別体に構成され、前記漏電保護装置に過電圧
が印加された場合には保護対象機器への電力供給を停止
する装置を持つので、保護対象機器を過電圧による破壊
から防護することができる。
According to a first aspect of the present invention, there is provided an earth leakage protection device having an earth leakage detection circuit and an interruption circuit, wherein the earth leakage protection device is configured separately from a device to be protected, and is protected when an overvoltage is applied to the earth leakage protection device. Since there is a device that stops the power supply to the target device, it is possible to protect the target device from damage due to overvoltage.

【0017】請求項2では、漏電保護装置において、電
力供給線の各相の少なくとも一つの相間にサージ吸収素
子と電流ヒューズを直列に少なくとも一組接続し、前記
サージ吸収素子と前記電流ヒューズの接続部に保護対象
機器への電力供給線の内少なくとも一つを接続し、前記
漏電保護装置に過電圧が印加された場合に前記電流ヒュ
ーズを断線させ前記接続部に接続された前記電力供給線
への電力供給を停止することができるので、保護対象機
器を過電圧による破壊から防護することができる。
According to a second aspect of the present invention, in the leakage protection device, at least one surge absorbing element and at least one current fuse are connected in series between at least one of the phases of the power supply line, and the surge absorbing element and the current fuse are connected. To at least one of the power supply lines to the protection target device, and disconnecting the current fuse when an overvoltage is applied to the earth leakage protection device, to the power supply line connected to the connection part. Since the power supply can be stopped, the equipment to be protected can be protected from damage due to overvoltage.

【0018】請求項3では、漏電保護装置に過電圧が印
加された場合には保護対象機器への電力供給を停止する
前記の装置、が作動したことを検知して漏電保護装置を
作動させるので、保護対象機器への通電を遮断して過電
圧から保護対象機器の電気回路が破壊されぬよう守るこ
とができる。
According to the third aspect of the present invention, when the overvoltage is applied to the leakage protection device, it is detected that the device for stopping the power supply to the equipment to be protected operates, and the leakage protection device operates. It is possible to protect the electric circuit of the protection target device from being destroyed from the overvoltage by cutting off the power supply to the protection target device.

【0019】請求項4では、前記漏電保護装置は漏電検
出回路と遮断回路を内蔵し、電力供給線の相間にサージ
吸収素子と電流ヒューズを直列に接続し、前記電流ヒュ
ーズが切断した場合に動作する電流発生装置により発生
した電流で遮断回路を動作させ、保護対象機器への過電
圧印加を防ぐことを特徴とするので、保護対象機器を過
電圧による破壊から防護することが可能であり、漏電保
護装置と保護対象機器の接続に過電圧用の電力供給線が
不要になり最小構成の電力供給線で接続することができ
る。
According to a fourth aspect of the present invention, the earth leakage protection device has an earth leakage detection circuit and an interruption circuit built-in, and a surge absorbing element and a current fuse are connected in series between phases of a power supply line, and operates when the current fuse is cut off. It is characterized by operating the breaking circuit with the current generated by the current generator to prevent the overvoltage from being applied to the equipment to be protected. A power supply line for overvoltage is not required to connect the equipment to be protected with the power supply line with the minimum configuration.

【図面の簡単な説明】[Brief description of drawings]

【図1】 本発明の一実施例である漏電保護装置の構成
図。
FIG. 1 is a configuration diagram of an earth leakage protection device according to an embodiment of the present invention.

【図2】 本発明の一実施例である漏電保護装置の構成
図。
FIG. 2 is a configuration diagram of a leakage protection device that is an embodiment of the present invention.

【図3】 本発明の一実施例である漏電保護装置の構成
図。
FIG. 3 is a configuration diagram of a leakage protection device that is an embodiment of the present invention.

【図4】 本発明の一実施例である漏電保護装置の構成
図。
FIG. 4 is a configuration diagram of a leakage protection device that is an embodiment of the present invention.

【図5】 本発明の一実施例である漏電保護装置の外観
図。
FIG. 5 is an external view of a leakage protection device that is an embodiment of the present invention.

【図6】 従来の漏電保護装置の構成図。FIG. 6 is a configuration diagram of a conventional earth leakage protection device.

【符号の説明】[Explanation of symbols]

1 漏電保護装置 2 遮断回路 3 フェライトリング 4 電圧測定点 5 各供給電圧遮断回路 6 電源プラグ 7 遮断回路信号線 8 漏電検出・遮断回路 9 漏電検出線 10 過電圧検出・遮断回路 11 遮断回路信号線 12 電力供給線(1) 13 電力供給線(2) 14 電力供給線(3) 16 保護対象機器 17 被覆 22 漏電保護装置 23 バリスタ 24 電流ヒューズ 25 フェライトリング 26 電力供給線(1) 27 電力供給線(2) 28 電力供給線(3) 29 漏電検出・遮断回路 30 漏電検出線 32 保護対象機器 33 被覆 41 漏電保護装置 42 電力供給線遮断装置 43 抵抗 44 抵抗 45 バリスタ 46 電流ヒューズ 47 フェライトリング 48 電力供給線(1) 49 電力供給線(2) 50 漏電検出・遮断装置 51 漏電検出線 53 保護対象機器 54 被覆 61 漏電保護装置 62 電力供給線遮断装置 63 抵抗 64 抵抗 65 バリスタ 66 電流ヒューズ 67 フェライトリング 68 電力供給線(1) 69 電力供給線(2) 70 漏電検出・遮断装置 71 漏電検出線 73 保護対象機器 74 アース線 75 被覆 101 漏電保護装置 102 遮断回路 103 フェライトリング 104 電源プラグ 105 遮断回路動作信号線 106 漏電検出、遮断装置 107 漏電電流検出線 108 機器側電力供給接続点 109 保護対象機器 110 被覆 120 漏電保護装置 121 復帰ボタン 122 動作ランプ 123 電力線 1 Leakage protection device 2 Breaking circuit 3 Ferrite ring 4 voltage measurement points 5 Each supply voltage cutoff circuit 6 power plug 7 Breaking circuit signal line 8 Leakage detection / cutoff circuit 9 Leakage detection line 10 Overvoltage detection / cutoff circuit 11 Breaking circuit signal line 12 Power supply line (1) 13 Power supply line (2) 14 Power supply line (3) 16 Protected equipment 17 coating 22 Earth leakage protection device 23 Barista 24 current fuse 25 Ferrite ring 26 Power Supply Line (1) 27 Power supply line (2) 28 Power supply line (3) 29 Leakage detection / interruption circuit 30 Leakage detection line 32 Protected equipment 33 coating 41 Earth leakage protection device 42 Power supply line breaker 43 resistance 44 Resistance 45 Barista 46 current fuse 47 Ferrite ring 48 power supply line (1) 49 Power supply line (2) 50 Leakage detection / interruption device 51 Leakage detection line 53 Protected equipment 54 coating 61 Leakage protection device 62 Power supply line breaker 63 resistance 64 resistance 65 Barista 66 current fuse 67 Ferrite ring 68 Power supply line (1) 69 power supply line (2) 70 Leakage detection / interruption device 71 Leakage detection line 73 Protected equipment 74 ground wire 75 coating 101 Leakage protection device 102 Breaking circuit 103 Ferrite ring 104 power plug 105 Breaking circuit operation signal line 106 Leakage detection / interruption device 107 Leakage current detection line 108 Equipment side power supply connection point 109 protected equipment 110 coating 120 earth leakage protection device 121 Return button 122 Operation lamp 123 power line

───────────────────────────────────────────────────── フロントページの続き (72)発明者 大石 竜太 福岡県北九州市小倉北区中島2丁目1番1 号 東陶機器株式会社内 Fターム(参考) 5G013 AA01 AA04 AA09 BA02 CB12 DA12 5G030 AC03 YY11    ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Ryuta Oishi             2-1-1 Nakajima, Kokurakita-ku, Kitakyushu City, Fukuoka Prefecture             No. Totoki Equipment Co., Ltd. F term (reference) 5G013 AA01 AA04 AA09 BA02 CB12                       DA12                 5G030 AC03 YY11

Claims (4)

【特許請求の範囲】[Claims] 【請求項1】 漏電検出回路と遮断回路を有する漏電保
護装置において、前記漏電保護装置は保護対象機器と別
体に構成され、前記漏電保護装置に過電圧が印加された
場合には保護対象機器への電力供給を停止する装置を持
つことを特徴とする漏電保護装置。
1. In an earth leakage protection device having an earth leakage detection circuit and a cutoff circuit, the earth leakage protection device is constructed separately from a device to be protected, and when an overvoltage is applied to the earth leakage protection device, the device is to be protected. An earth leakage protection device characterized by having a device for stopping the power supply of.
【請求項2】 前記漏電保護装置において、電力供給線
の各相の少なくとも一つの相間にサージ吸収素子と電流
ヒューズを直列に少なくとも一組接続し、前記サージ吸
収素子と前記電流ヒューズの接続部に前記保護対象機器
への電力供給線の内少なくとも一つを接続し、前記漏電
保護装置に過電圧が印加された場合に前記電流ヒューズ
を断線させ前記接続部に接続された前記電力供給線への
電力供給を停止することを特徴とする請求項1に記載の
漏電保護装置。
2. In the earth leakage protection device, at least one set of a surge absorbing element and a current fuse is connected in series between at least one phase of each of the power supply lines, and a connection portion between the surge absorbing element and the current fuse is connected. At least one of the power supply lines to the protection target device is connected, and the power to the power supply line connected to the connection part is opened by disconnecting the current fuse when an overvoltage is applied to the leakage protection device. The leakage protection device according to claim 1, wherein the supply is stopped.
【請求項3】 漏電保護装置に過電圧が印加された場合
に電力供給を停止する装置が作動したことを検知して漏
電保護装置を作動させることを特徴とする請求項1記載
の漏電保護装置。
3. The leakage protection device according to claim 1, wherein when the overvoltage is applied to the leakage protection device, the leakage protection device is activated by detecting that the device for stopping the power supply is activated.
【請求項4】 前記漏電保護装置は漏電検出回路と遮断
回路を内蔵し、電力供給線の相間にサージ吸収素子と電
流ヒューズを直列に接続し、前記電流ヒューズが切断し
た場合に動作する電流発生装置により発生した電流で遮
断回路を動作させ、保護対象機器への過電圧印加を防ぐ
ことを特徴とする請求項1に記載の漏電保護装置。
4. The leakage protection device has a leakage detection circuit and an interruption circuit built-in, a surge absorbing element and a current fuse are connected in series between phases of a power supply line, and a current is generated when the current fuse is cut off. The leakage protection device according to claim 1, wherein an interruption circuit is operated by a current generated by the device to prevent an overvoltage from being applied to a device to be protected.
JP2001237190A 2001-08-03 2001-08-03 Electrical leakage protective device Pending JP2003051239A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001237190A JP2003051239A (en) 2001-08-03 2001-08-03 Electrical leakage protective device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2001237190A JP2003051239A (en) 2001-08-03 2001-08-03 Electrical leakage protective device

Publications (2)

Publication Number Publication Date
JP2003051239A true JP2003051239A (en) 2003-02-21
JP2003051239A5 JP2003051239A5 (en) 2008-05-08

Family

ID=19068315

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2001237190A Pending JP2003051239A (en) 2001-08-03 2001-08-03 Electrical leakage protective device

Country Status (1)

Country Link
JP (1) JP2003051239A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006004950A (en) * 2004-06-18 2006-01-05 Schneider Electric Industries Sas Voltage surge protection device
CN109245043A (en) * 2018-09-17 2019-01-18 余姚市嘉荣电子电器有限公司 A kind of safe leakage protection system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61117801A (en) * 1984-11-13 1986-06-05 松下電器産業株式会社 Receptacle type surge absorber
JPS61107171U (en) * 1984-12-20 1986-07-07
JPH039731A (en) * 1989-01-30 1991-01-17 Toshiba Corp Cushion for medical diagnosing apparatus
JPH0438116A (en) * 1990-05-31 1992-02-07 Matsushita Electric Works Ltd Earth leakage breaker
JPH05252646A (en) * 1992-02-28 1993-09-28 Sanyo Electric Co Ltd Detecting device for deterioration of insulation
JPH10136555A (en) * 1996-10-30 1998-05-22 Kawamura Electric Inc Earth leakage breaker
JP2001075655A (en) * 1999-09-07 2001-03-23 Toto Ltd Power unit and electric equipment using the same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61117801A (en) * 1984-11-13 1986-06-05 松下電器産業株式会社 Receptacle type surge absorber
JPS61107171U (en) * 1984-12-20 1986-07-07
JPH039731A (en) * 1989-01-30 1991-01-17 Toshiba Corp Cushion for medical diagnosing apparatus
JPH0438116A (en) * 1990-05-31 1992-02-07 Matsushita Electric Works Ltd Earth leakage breaker
JPH05252646A (en) * 1992-02-28 1993-09-28 Sanyo Electric Co Ltd Detecting device for deterioration of insulation
JPH10136555A (en) * 1996-10-30 1998-05-22 Kawamura Electric Inc Earth leakage breaker
JP2001075655A (en) * 1999-09-07 2001-03-23 Toto Ltd Power unit and electric equipment using the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006004950A (en) * 2004-06-18 2006-01-05 Schneider Electric Industries Sas Voltage surge protection device
JP4606952B2 (en) * 2004-06-18 2011-01-05 シュネーデル、エレクトリック、インダストリーズ、エスアーエス Voltage surge protector
CN109245043A (en) * 2018-09-17 2019-01-18 余姚市嘉荣电子电器有限公司 A kind of safe leakage protection system
CN109245043B (en) * 2018-09-17 2023-09-12 余姚市嘉荣电子电器有限公司 Safe electric leakage protection system

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