WO2005111637A1 - 漏電検出装置 - Google Patents
漏電検出装置 Download PDFInfo
- Publication number
- WO2005111637A1 WO2005111637A1 PCT/JP2005/008497 JP2005008497W WO2005111637A1 WO 2005111637 A1 WO2005111637 A1 WO 2005111637A1 JP 2005008497 W JP2005008497 W JP 2005008497W WO 2005111637 A1 WO2005111637 A1 WO 2005111637A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- leakage detection
- switch
- external connection
- detection device
- terminal
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/54—Manual reset mechanisms which may be also used for manual release actuated by tumbler
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/52—Testing for short-circuits, leakage current or ground faults
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
- H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/18—Printed circuits structurally associated with non-printed electric components
Definitions
- the present invention relates to an electric leakage detection device, and more particularly to an electric leakage detection device suitable for use in a housing of various devices such as a copying machine and a printer.
- Patent Document 1 JP-A-2000-261953
- Patent Document 2 Japanese Patent Application Laid-Open No. 2001-023501
- Patent Document 3 JP 2001-006515 A
- an object of the present invention is to provide an earth leakage detection device that can solve the problems of the conventional technology as described above.
- the printed circuit board on which the leakage detection control circuit is mounted, the switch with the reset function mounted on one surface side of the printed circuit board, and the one surface side of the printed circuit board are Leakage detection current transformer mounted on the opposite side, an external connection terminal for introducing and outputting power, and an electric wire penetrating the leakage detection current transformer and connected between the external connection terminals
- the switch with reset function is disposed between the external connection terminals so as to be connected to the leakage detection control circuit.
- the switch with reset function is detachable from a connection terminal provided on a flat fixing member forming a function block connection portion, Constitutes a leakage detection control circuit section, wherein the leakage detection current transformer and the electric wire member are provided on the printed circuit board.
- the functional block connection unit and the leakage detection control circuit unit are detachable from each other.
- connection terminal is a faston terminal.
- external connection terminal receives power.
- the one to introduce and the one to output power are located on the same side of the device.
- the external connection terminals include a terminal for introducing power and a terminal for outputting power, which are arranged on opposite sides of the device. ing.
- the switch with the reset function is also used as a power switch.
- the switch portion and the control circuit portion can be separated from each other, the degree of freedom in designing the device can be increased, for example, by installing only the switch portion in an easily operable place.
- the switch with reset function can be separated using an appropriate harness such as an electric wire, so that it can be designed with priority on operability even when used as a power switch. Furthermore, it is possible to easily cope with a case where the rating of the switch with the reset function is changed.
- leakage detection control circuit unit can be separated, it is possible to respond to requests such as a change in leakage current specification and a change in disconnection time upon detection of leakage.
- a switch with a reset function can be attached to an existing device later with an electric leakage detection device, so that an electric leakage detection function is added to easily secure safety.
- connection piece of the functional block connection portion and the external connection terminal Since the direction of connection to the commercial power supply and the load can be changed only by the method of forming the connection piece of the functional block connection portion and the external connection terminal, the layout in the device can be made freely.
- FIG. 1 of the accompanying drawings is a schematic front view of an electric leakage detection device as one embodiment of the present invention
- FIG. 2 is a schematic side view of the electric leakage detection device of FIG. 1
- FIG. FIG. 4 is a schematic plan view of the ground fault detecting device of FIG. 1
- FIG. 4 is a schematic bottom view of the ground fault detecting device of FIG.
- the electric leakage detection device of this embodiment is mainly provided with a reset circuit having a function of being turned off by a reset signal, which is disposed on a printed circuit board 4 on which an electric leakage detection circuit described later is mounted. It comprises a switch with function 1 and a current transformer 3 for detecting electric leakage, which is arranged below the printed circuit board 4 and detects imbalance of AC power.
- FIG. 5 is a schematic front view showing the switch 1 with a reset function in the earth leakage detection device of FIG. is there.
- the switch with reset function 1 has a pair of switch terminals 8 on the lower front side and the rear side, respectively.
- FIG. 6 is a schematic front view showing a functional block connection portion in the earth leakage detection device of FIG.
- the functional block connecting portion includes a flat fixing member 10 and a protection member 12, and the fixing member 10 and the protection member 12 are mutually held by the holding members 11 at the four corners.
- the fixing member 10 is provided with connection terminals 6 that are in electrical and mechanical contact with the corresponding ones of the switch terminals 8 of the switch 1 with reset function.
- These connection terminals 6 should be force-faston terminals, which can be any type of terminals as long as the switch with reset function 1 is made detachable from the function block connection portion. preferable.
- the switch 1 with the reset function has a shape similar to that of the rocker switch so as to have an operational feeling, so that it can be used as a power switch.
- the fixing member 10 is provided with a pair of external connection terminals 2 for introducing electric power (for example, for connecting to a commercial power supply), and the protective member 12 outputs electric power.
- a pair of external connection terminals 2 are provided (for example, for power supply connection to a load).
- an external connection terminal 2 for introducing power and an external connection terminal 2 for outputting power are provided on the same side of the device.
- the fixing member 10 is provided with connection pieces 7 for electrically connecting the pair of external connection terminals 2 for introducing power and the corresponding pair of connection terminals 6 respectively. Has been.
- connection piece 7 is provided between the fixing member 10 and the protection member 12.
- the protective member 12 has a connector for electrically connecting an external connection terminal 2 for outputting electric power to the other end of the electric wire member 5 in a leakage detection control circuit section described later. 13 and a connector 13 for electrically connecting the connection piece 7 provided between the fixing member 10 and the protection member 12 to one end of the electric wire member 5 in the leakage detection control circuit section described later.
- these connectors 13 correspond to the protection member 12 and the corresponding It is composed of a conductive cylindrical member provided so as to penetrate the external connection terminal 2 or the connection piece 7.
- the periphery of the conductive cylindrical member is electrically connected to the external connection terminal 2 or the connection piece 7, and the lower end of the conductive cylindrical member is connected to each end of the electric wire member 5 in the leakage detection control circuit section described later.
- the protruding portion 5A is configured to be freely detachably received and electrically connected thereto.
- FIG. 7 is a schematic front view showing a leakage detection control circuit unit in the leakage detection device of FIG. 1, and FIG. 8 is a schematic bottom view of the leakage detection control circuit unit of FIG.
- the leakage detection control circuit section includes a printed circuit board 4 having substantially the same extent as the fixing member 10 and the protection member 12 of the above-described functional block connection section.
- the printed circuit board 4 is provided with a leakage detection circuit as described later, and a printed circuit board 4 is provided with a current detection circuit 3 for detecting an unbalance of AC power. Is done. Further, the printed circuit board 4 is provided with an electric wire member 5 penetrating the core of the current transformer 3.
- FIG. 7 is a schematic front view showing a leakage detection control circuit unit in the leakage detection device of FIG. 1
- FIG. 8 is a schematic bottom view of the leakage detection control circuit unit of FIG.
- the leakage detection control circuit section includes a printed circuit board 4 having substantially the same extent as the fixing member 10 and the protection member 12 of the above
- similar holding members 14 are provided in the upper four corners of the printed circuit board 4 at positions corresponding to the holding members 11 provided in the above-described functional block connection portions. .
- the functional block connection section and the leakage detection control circuit section are detachable from each other via these holding members 11 and 14.
- a connection protrusion 5A electrically connected to each end of each wire member 5 is provided on the upper side of the printed circuit board 4.
- the switch 1 with the reset function, the functional block connection unit, and the leakage detection control circuit unit described above with reference to Figs. 5 to 8 are detachable from each other as described above.
- an earth leakage detection device having a structure as shown in FIGS. 1 to 4 can be configured.
- the leakage detection devices illustrated in FIGS. 1 to 4 are held by the brackets 15 for attaching to various devices such as copiers and printers.
- the present invention is not limited to the one held by such a bracket.
- the attachment / detachment between the functional block connection section and the leakage detection control circuit section may be performed by screwing the corresponding holding member 11 and the corresponding holding member 14, or the holding members may be connected to each other.
- the switch 1 with the reset function is detached from the connection terminal 6 of the functional block connection portion, and wiring between the switch terminal 8 and the connection terminal 6 is performed by using an appropriate harness. It can be arranged at any place of the device.
- FIG. 9 is a block diagram showing the arrangement of components and the electrical connection relationship in one usage example of the electric leakage detection device described above with reference to FIGS. 1 to 8.
- a power supply circuit 41 an amplification circuit 42, a synchronization determination circuit 43A, a leakage determination circuit 43, and a reset switch control circuit 4 are provided on the printed circuit board 4 as leakage detection circuits. 4 and have been implemented.
- the leakage current detecting transformer 3 mounted on the lower side of the printed circuit board 4 includes a core 31 penetrating the electric wire member 5 and a secondary coil 32 connected to the amplifier circuit 42.
- the switch 1 with a reset function includes a contact movable portion 1A and a solenoid 1B for turning the contact movable portion 1A on and off.
- the leakage detection device of this embodiment is provided in a housing of a device such as a copying machine or a printer, for example, and has an external connection terminal on one side (current transformer side). 2 is connected to the equipment power supply line for supplying power to the equipment, and the external connection terminal 2 on the other side (switch side with reset function) is connected to the commercial power supply line inside the equipment. Being done.
- the operation of the earth leakage detecting device according to the present invention having the above-described configuration will be described.
- an unbalanced voltage is induced in the leakage detecting current transformer 3
- a voltage is generated in the secondary coil 32
- the voltage signal is amplified by the amplifier circuit 42
- the synchronization determination circuit 43 A Is entered.
- the synchronization determination circuit 43A detects the timing of the commercial power supply frequency, and inputs the amplified voltage or current signal from the amplifier circuit 42 to the earth leakage determination circuit 43 only at a predetermined timing of the commercial power supply frequency. Works.
- the leakage determination circuit 43 compares the input amplified voltage or current signal with a predetermined reference voltage or current, and the amplified voltage or current signal determines the reference voltage or current. When it exceeds, it is determined that the current level is the predetermined leakage level, whereby the power is supplied from the power supply circuit 41 to the solenoid 1B by the reset switch control circuit 44. [0032] As described above, the contact movable portion 1A of the switch 1 with the reset function turns off the contact movable portion 1A by energizing the force solenoid 1B, which has been secured in the ON state. Flipped to a state. In this way, when a ground fault is detected, the equipment power line to the equipment can be turned off.
- the synchronization determination circuit 43A between the amplification circuit 42 and the leakage determination circuit 43 as described above, the following operation and effect can be obtained. That is, the voltage or current signal output from the amplifier circuit 42 due to the leakage is at the same frequency as the commercial power supply frequency. Therefore, if the voltage or current signal amplified from the amplifying circuit 42 is input to the earth leakage determining circuit 43 only at a predetermined timing of the commercial power frequency by the synchronization determining circuit 43A, it is input to the earth leakage determining circuit 43. Voltage or current signals are very likely to have been caused by earth leakage.
- FIG. 10 is a schematic front view similar to FIG. 1, showing a leakage detection device as another embodiment of the present invention.
- the configuration of the leakage detection device of this embodiment is the same as that of the embodiment described above with reference to FIGS. 1 to 9 except that the external connection terminals 2 are arranged on the same side of the device and on opposite sides. Since the configuration is substantially the same, only the different components will be described below.
- the same reference numerals as those used in FIGS. 1 to 9 denote the same components.
- a pair of external connection terminals 2 for introducing electric power is arranged on the right side of the device in FIG. 10, and a pair of external connection terminals for outputting electric power is provided.
- Terminal 2 is located on the left side of the device in FIG. Therefore, a connection piece 7 for electrically connecting the connection terminal 6 on the left side in FIG. 10 and the connection protrusion 5A of the electric wire member 5 on the right side in FIG. 10 is provided.
- a method of forming the functional block connecting portion having the above-described configuration will be described.
- a printed board is used as the fixing member 10, a part of the connection piece 7 is formed in a copper foil pattern, and the holding member 11 and the protection member 12 are formed of an electrical insulator.
- the fixing member 10, the holding member 11, and the protection portion Using an electrically insulating material such as plastic for the material 12, the external connection terminal 2 and the connection piece 7 are composed of continuous pressed parts, and the fixing member 10, the holding member 11, the protection member 12, and the external connection There is a method of integrally molding the terminal 2 for connection and the connection piece 7.
- the fixing member 10, the holding member 11, and the protection member 12 are molded with an electrical insulator such as plastic, and the connection terminal 6, the connection piece 7, and the external connection terminal 2 are individually incorporated. There is. Note that the present invention can be formed by any method other than these forming methods.
- FIG. 1 is a schematic front view of an electric leakage detection device as one embodiment of the present invention.
- FIG. 2 is a schematic side view of the electric leakage detection device of FIG. 1.
- FIG. 3 is a schematic plan view of the leakage detecting device of FIG. 1.
- FIG. 4 is a schematic bottom view of the leakage detecting device of FIG. 1.
- FIG. 5 is a schematic front view showing a switch with a reset function in the earth leakage detection device of FIG. 1.
- FIG. 6 is a schematic front view showing a functional block connecting portion in the earth leakage detection device of FIG. 1.
- FIG. 7 is a schematic front view showing a leakage detection control circuit section in the leakage detection device of FIG. 1.
- FIG. 8 is a schematic bottom view of the leakage detection control circuit section of FIG. 7.
- FIG. 9 is a block diagram showing an arrangement of each component and an electrical connection relationship in one usage example of the electric leakage detection device shown in FIGS. 1 to 8.
- FIG. 10 is a schematic front view similar to FIG. 1, showing a leakage detection device as another embodiment of the present invention.
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Protection Circuit Devices (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/592,951 US20070053119A1 (en) | 2004-05-13 | 2006-11-03 | Earth leakage detection device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004143146A JP2005326201A (ja) | 2004-05-13 | 2004-05-13 | 漏電検出装置 |
| JP2004-143146 | 2004-05-13 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US11/592,951 Continuation US20070053119A1 (en) | 2004-05-13 | 2006-11-03 | Earth leakage detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005111637A1 true WO2005111637A1 (ja) | 2005-11-24 |
Family
ID=35394283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2005/008497 Ceased WO2005111637A1 (ja) | 2004-05-13 | 2005-05-10 | 漏電検出装置 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20070053119A1 (ja) |
| JP (1) | JP2005326201A (ja) |
| CN (1) | CN1954221A (ja) |
| WO (1) | WO2005111637A1 (ja) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833893B (zh) * | 2015-04-14 | 2018-09-14 | 国网浙江杭州市萧山区供电公司 | 漏电检测系统及方法 |
| CN105510759B (zh) * | 2015-11-30 | 2019-05-28 | 华为技术有限公司 | 漏电检测设备及其检测方法 |
| DE102018132775A1 (de) * | 2018-12-19 | 2020-06-25 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Schaltungsvorrichtung für ein Fahrzeug und Verfahren zum Betreiben einer Schaltungsvorrichtung |
| CN112180289B (zh) * | 2020-09-22 | 2023-10-10 | 中策永通电缆有限公司 | 一种浸入式建筑施工用线缆表皮破损漏电检测装置 |
| CN113555841A (zh) * | 2021-07-26 | 2021-10-26 | 苏州万龙电气集团股份有限公司 | 一种开关智能控制与保护系统装置 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS557632A (en) * | 1978-06-30 | 1980-01-19 | Matsushita Electric Works Ltd | Leakage detector |
| JPS60186653U (ja) * | 1984-05-21 | 1985-12-11 | オムロン株式会社 | 漏電ブレ−カのテスト装置 |
| JPH10253685A (ja) * | 1997-03-05 | 1998-09-25 | Hioki Ee Corp | 漏れ電流測定用検査装置 |
| JPH10253684A (ja) * | 1997-03-05 | 1998-09-25 | Hioki Ee Corp | 漏れ電流測定用検査装置 |
| JPH1118281A (ja) * | 1997-06-25 | 1999-01-22 | Matsushita Electric Works Ltd | 漏電検知器 |
| JPH1127850A (ja) * | 1997-07-04 | 1999-01-29 | Matsushita Electric Works Ltd | 漏電検知器 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2439127Y (zh) * | 2000-09-04 | 2001-07-11 | 黄华道 | 漏电保护插座 |
-
2004
- 2004-05-13 JP JP2004143146A patent/JP2005326201A/ja active Pending
-
2005
- 2005-05-10 CN CNA2005800153491A patent/CN1954221A/zh active Pending
- 2005-05-10 WO PCT/JP2005/008497 patent/WO2005111637A1/ja not_active Ceased
-
2006
- 2006-11-03 US US11/592,951 patent/US20070053119A1/en not_active Abandoned
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS557632A (en) * | 1978-06-30 | 1980-01-19 | Matsushita Electric Works Ltd | Leakage detector |
| JPS60186653U (ja) * | 1984-05-21 | 1985-12-11 | オムロン株式会社 | 漏電ブレ−カのテスト装置 |
| JPH10253685A (ja) * | 1997-03-05 | 1998-09-25 | Hioki Ee Corp | 漏れ電流測定用検査装置 |
| JPH10253684A (ja) * | 1997-03-05 | 1998-09-25 | Hioki Ee Corp | 漏れ電流測定用検査装置 |
| JPH1118281A (ja) * | 1997-06-25 | 1999-01-22 | Matsushita Electric Works Ltd | 漏電検知器 |
| JPH1127850A (ja) * | 1997-07-04 | 1999-01-29 | Matsushita Electric Works Ltd | 漏電検知器 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1954221A (zh) | 2007-04-25 |
| US20070053119A1 (en) | 2007-03-08 |
| JP2005326201A (ja) | 2005-11-24 |
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