CN104319559A - Leakage protection plug with ground wire live-line indication - Google Patents

Leakage protection plug with ground wire live-line indication Download PDF

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Publication number
CN104319559A
CN104319559A CN201410515199.1A CN201410515199A CN104319559A CN 104319559 A CN104319559 A CN 104319559A CN 201410515199 A CN201410515199 A CN 201410515199A CN 104319559 A CN104319559 A CN 104319559A
Authority
CN
China
Prior art keywords
ground wire
plug
ground
instrument transformer
amplifying circuit
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
CN201410515199.1A
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Chinese (zh)
Inventor
钱加灿
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.)
Yuyao Jiarong Electronic Appliance Co Ltd
Original Assignee
Yuyao Jiarong Electronic Appliance Co 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 Yuyao Jiarong Electronic Appliance Co Ltd filed Critical Yuyao Jiarong Electronic Appliance Co Ltd
Priority to CN201410515199.1A priority Critical patent/CN104319559A/en
Publication of CN104319559A publication Critical patent/CN104319559A/en
Pending legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66Structural association with built-in electrical component
    • H01R13/717Structural association with built-in electrical component with built-in light source
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66Structural association with built-in electrical component
    • H01R13/70Structural association with built-in electrical component with built-in switch
    • H01R13/713Structural association with built-in electrical component with built-in switch the switch being a safety switch

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

The invention discloses a leakage protection plug with ground wire live-line indication. The leakage protection plug comprises a live wire end, a ground wire end and a zero wire end, wherein a live-line indication unit is arranged between the zero wire end and the ground wire end, the live-line indication unit comprises a capacitor and a neon lamp which are connected in series, and the value of the capacitor is more than 50 PF. The leakage protection plug further comprises a release, a rectification circuit, a power voltage reduction part, a controlled silicon and an IC amplification circuit, wherein the release is connected with the rectification circuit, the rectification circuit is connected with the power voltage reduction part and the controlled silicon, the power voltage reduction part is connected with the IC amplification circuit, and the trigger pole of the controlled silicon is under the control of the IC amplification circuit. According to the invention, the capacitor is additionally arranged in the leakage protection plug with the ground wire live-line indication. Since the capacitor has the characteristics of conducting AC power and isolating DC power, during insulation testing, the plug is equivalently at an off-state, and the insulation effect is good.

Description

There is the leakage protecting plug of ground wire electrification instruction
Technical field
The present invention relates to electric heater electric security protector device field, particularly a kind of leakage protecting plug with ground wire electrification instruction.
Background technology
Zero line and the ground terminal of the leakage protecting plug of prior art are provided with neon lamp; be used to indicate the situation of ground wire electrification; but the defect of this product is neon lamp to be needed to add insulation resistance; insulation resistance value, generally at 10 M about Ω, which results in ground wire and zero line side can not reach best insulation effect.
Summary of the invention
(1) technical problem that will solve
Object of the present invention will overcome above-mentioned shortcoming exactly, aims to provide a kind of leakage protecting plug with ground wire electrification instruction.
(2) technical scheme
For solving the problem, the present invention proposes a kind of leakage protecting plug with ground wire electrification instruction, comprise live wire end, ground terminal and zero line side, charged indicating member is provided with between described zero line side and ground terminal, described charged indicating member comprises electric capacity and the neon lamp of series connection, and described electric capacity value is at more than 50PF; This plug also comprises release, rectification circuit, power voltage step down, controllable silicon and IC amplifying circuit, described release connects rectification circuit, described rectification circuit connects power voltage step down, and controllable silicon, described power voltage step down connects IC amplifying circuit, and described silicon controlled trigger electrode is controlled by described IC amplifying circuit.
Further, this plug is also provided with zero sequence current mutual inductor, and zero sequence current mutual inductor is passed by zero line and live wire, and zero sequence current mutual inductor secondary coil connects IC amplifying circuit.
Further, this plug is also provided with ground wire voltage instrument transformer, and the two ends of the primary coil of described ground wire voltage instrument transformer connect zero line side and live wire end respectively, and the secondary coil of described ground wire voltage instrument transformer connects IC amplifying circuit.
Further, this plug is also provided with ground line current instrument transformer, and the secondary coil of described ground line current instrument transformer connects, and described IC amplifying circuit, described ground line current instrument transformer is passed by ground wire.(3) beneficial effect
Compared with prior art, the present invention has the following advantages: charged instruction adds electric capacity, because electric capacity leads to the feature exchanging stopping direct current, off-state is equivalent to when therefore surveying insulation, insulation effect is good, and the charged instruction of prior art only increases insulation resistance, also have the resistance of 10M about Ω during the insulation of side, insulation effect is poor.
Accompanying drawing explanation
Fig. 1 is the module map with the leakage protecting plug of ground wire electrification instruction of the present invention;
Fig. 2 is the circuit theory diagrams with the leakage protecting plug of ground wire electrification instruction of the present invention;
Fig. 3 is the circuit theory diagrams of the embodiment of the present invention two;
Fig. 4 is the circuit theory diagrams of embodiments of the invention three.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
Embodiment one
Circuit theory diagrams as shown in Figure 1, the leakage protecting plug with the charged instruction of ground wire E of the present invention, comprise live wire L end, ground wire E holds and zero line N holds, described zero line N holds and be provided with charged indicating member between ground wire E end, described charged indicating member comprises electric capacity C1 and the neon lamp H of series connection, described electric capacity C1 value at more than 50PF, preferably, C1 value at 50 ~ 1000PF, to ensure that stating electric capacity C1 has certain impedance; This plug also comprises release, rectification circuit, power voltage step down, controllable silicon SCR and IC amplifying circuit, described release connects rectification circuit, described rectification circuit connects power voltage step down and Silicon controlled supply, described power voltage step down connects IC amplifying circuit, and described silicon controlled trigger electrode is controlled by described IC amplifying circuit.In the present embodiment, rectification circuit is rectifier diode DC, and power voltage step down is dropping resistor RV, IC amplifying circuit is earth leakage protective chip IC.
Preferably, can arrange current-limiting resistance R1 between electric capacity C1 and neon lamp H, for preventing neon lamp from puncturing, physical circuit schematic diagram is shown in Fig. 2.
This plug is also provided with zero sequence current mutual inductor ZCT1, and zero sequence current mutual inductor is passed by zero line and live wire, and zero sequence current mutual inductor ZCT1 secondary coil connects IC amplifying circuit.
This plug is also provided with ground wire voltage instrument transformer ZCT2, and the two ends of the primary coil of described ground wire voltage instrument transformer ZCT2 connect zero line N end respectively and live wire L holds, and the secondary coil of described ground wire voltage instrument transformer ZCT2 connects IC amplifying circuit.
The zero line side of this plug and ground terminal are also provided with induced voltage and eliminate circuit, and it is electric capacity C2 that described induced voltage eliminates circuit.
Operation principle of the present invention is: when zero sequence current mutual inductor ZCT1 senses that zero line electric leakage or ground wire voltage instrument transformer ZCT2 sense ground wire electrification, the secondary coil of zero sequence current mutual inductor ZCT1 or ground wire voltage instrument transformer ZCT2 produces high level and is input to IC amplifying circuit, the trigger electrode of controllable silicon SCR was made to become high level after entering the process of IC amplifying circuit, thus make controllable silicon SCR conducting, the circuit turn-on at release two ends, thus release action.
Charged instruction of the present invention adds electric capacity, because electric capacity leads to the feature exchanging stopping direct current, is equivalent to off-state when therefore surveying insulation, insulation effect is good, and the charged instruction of prior art only increases insulation resistance, also have the resistance of 10M about Ω during the insulation of side, insulation effect is poor.
Embodiment two
The present embodiment is different from embodiment one be in: this plug is also provided with ground line current instrument transformer ZCT3, the secondary coil of described ground line current instrument transformer ZCT3 connects, described IC amplifying circuit, described ground line current instrument transformer ZCT3 is passed by ground wire, when ground wire has electric current to flow through, the secondary coil of ground line current instrument transformer ZCT3 produces high level and is input to IC amplifying circuit, thus make controllable silicon SCR conducting, the present embodiment adds the function of monitoring ground strip electric current on the basis of embodiment one, charged instruction adds electric capacity, because electric capacity leads to the feature exchanging stopping direct current, off-state is equivalent to when therefore surveying insulation, insulation effect is good, make leakage protecting plug more perfect.Circuit theory diagrams as shown in Figure 3.
Embodiment three
The present embodiment carries out perfect to leakage protecting plug further on the basis of embodiment two; change over switch K1 is provided with between ground wire voltage instrument transformer ZCT2 and ground line current instrument transformer ZCT3; convenient being used for is detected at ground wire voltage and switches both ground line current detection, avoids individual user family and causes mistrip because of zero line or ground wire electrification situation complexity.Physical circuit figure is shown in Fig. 4.
Below be only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (4)

1. one kind has the leakage protecting plug of ground wire electrification instruction, comprise live wire end, ground terminal and zero line side, it is characterized in that: be provided with charged indicating member between described zero line side and ground terminal, described charged indicating member comprises electric capacity and the neon lamp of series connection, and described electric capacity value is at more than 50PF; This plug also comprises release, rectification circuit, power voltage step down, controllable silicon and IC amplifying circuit, described release connects rectification circuit, described rectification circuit connects power voltage step down, and controllable silicon, described power voltage step down connects IC amplifying circuit, and described silicon controlled trigger electrode is controlled by described IC amplifying circuit.
2. the leakage protecting plug with ground wire electrification instruction according to claim 1; it is characterized in that: this plug is also provided with zero sequence current mutual inductor; zero sequence current mutual inductor is passed by zero line and live wire, and zero sequence current mutual inductor secondary coil connects IC amplifying circuit.
3. the leakage protecting plug with ground wire electrification instruction according to claim 2; it is characterized in that: this plug is also provided with ground wire voltage instrument transformer; the two ends of the primary coil of described ground wire voltage instrument transformer connect zero line side and live wire end respectively, and the secondary coil of described ground wire voltage instrument transformer connects IC amplifying circuit.
4. the leakage protecting plug with ground wire electrification instruction according to any one of claims 1 to 3; it is characterized in that: this plug is also provided with ground line current instrument transformer; the secondary coil of described ground line current instrument transformer connects, and described IC amplifying circuit, described ground line current instrument transformer is passed by ground wire.
CN201410515199.1A 2014-09-29 2014-09-29 Leakage protection plug with ground wire live-line indication Pending CN104319559A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410515199.1A CN104319559A (en) 2014-09-29 2014-09-29 Leakage protection plug with ground wire live-line indication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410515199.1A CN104319559A (en) 2014-09-29 2014-09-29 Leakage protection plug with ground wire live-line indication

Publications (1)

Publication Number Publication Date
CN104319559A true CN104319559A (en) 2015-01-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410515199.1A Pending CN104319559A (en) 2014-09-29 2014-09-29 Leakage protection plug with ground wire live-line indication

Country Status (1)

Country Link
CN (1) CN104319559A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105896465A (en) * 2015-09-28 2016-08-24 余姚市嘉荣电子电器有限公司 Three-pole leakage protector and working method thereof
GB2547430A (en) * 2016-02-16 2017-08-23 Electrium Sales Ltd Electrical wiring accessory with indicator lamp

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2066140U (en) * 1989-06-29 1990-11-21 鲁润泽 Automatic control alarm watt-hour meter for limiting quantity of electricity and anti-stealing electricity
CN101478223A (en) * 2008-10-14 2009-07-08 哈尔滨工程大学 Indicator circuit for energy-saving electric power
CN101877476A (en) * 2009-05-01 2010-11-03 杨树昌 Protector for preventing three-phase power circuit from generating high voltage
CN202259980U (en) * 2011-09-23 2012-05-30 钱加灿 Plug with ground wire live protection mechanism
CN103187705A (en) * 2013-03-28 2013-07-03 余姚市嘉荣电子电器有限公司 Ground wire leakage protection device
CN103346532A (en) * 2013-07-11 2013-10-09 余姚市嘉荣电子电器有限公司 Electric leakage prevention plug circuit
CN204205200U (en) * 2014-09-29 2015-03-11 余姚市嘉荣电子电器有限公司 There is the leakage protecting plug of ground wire electrification instruction

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2066140U (en) * 1989-06-29 1990-11-21 鲁润泽 Automatic control alarm watt-hour meter for limiting quantity of electricity and anti-stealing electricity
CN101478223A (en) * 2008-10-14 2009-07-08 哈尔滨工程大学 Indicator circuit for energy-saving electric power
CN101877476A (en) * 2009-05-01 2010-11-03 杨树昌 Protector for preventing three-phase power circuit from generating high voltage
CN202259980U (en) * 2011-09-23 2012-05-30 钱加灿 Plug with ground wire live protection mechanism
CN103187705A (en) * 2013-03-28 2013-07-03 余姚市嘉荣电子电器有限公司 Ground wire leakage protection device
CN103346532A (en) * 2013-07-11 2013-10-09 余姚市嘉荣电子电器有限公司 Electric leakage prevention plug circuit
CN204205200U (en) * 2014-09-29 2015-03-11 余姚市嘉荣电子电器有限公司 There is the leakage protecting plug of ground wire electrification instruction

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105896465A (en) * 2015-09-28 2016-08-24 余姚市嘉荣电子电器有限公司 Three-pole leakage protector and working method thereof
GB2547430A (en) * 2016-02-16 2017-08-23 Electrium Sales Ltd Electrical wiring accessory with indicator lamp
GB2547430B (en) * 2016-02-16 2020-01-15 Electrium Sales Ltd Electrical wiring accessory with indicator lamp

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Application publication date: 20150128

RJ01 Rejection of invention patent application after publication