CN205406868U - Electric leakage protection plug - Google Patents
Electric leakage protection plug Download PDFInfo
- Publication number
- CN205406868U CN205406868U CN201620130338.3U CN201620130338U CN205406868U CN 205406868 U CN205406868 U CN 205406868U CN 201620130338 U CN201620130338 U CN 201620130338U CN 205406868 U CN205406868 U CN 205406868U
- Authority
- CN
- China
- Prior art keywords
- circuit
- protecting plug
- leakage protecting
- amplifier
- current transformer
- 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.)
- Active
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The utility model discloses an electric leakage protection plug, include the release of being connected with the power, its characterized in that: release rectifying circuit even, the silicon controlled rectifier is connected to rectifier circuit's one end, and the other end connects gradually current -limiting circuit and voltage stabilizing circuit, voltage stabilizing circuit including parallelly connected mutually a voltage stabilizing circuit and the 2nd voltage stabilizing circuit, a voltage stabilizing circuit and the 2nd voltage stabilizing circuit connect first amplifier and second amplifier respectively, first amplifier connect a protective film piece, zero current transformer is mutually connected to a protective film piece, the second amplifier connect the 2nd protective film piece, ground wire current transformer is connected to the 2nd protective film piece, production can be reduced to the requirement of each spare part, the direct rate of product is improved to reach reduce cost, improve product quality.
Description
Technical field
This utility model relates to Electrical Safety resist technology field, especially relates to a kind of leakage protecting plug.
Background technology
Leakage protecting plug can detect ground strip leakage current or the situation of ground strip electrical leakage voltage; and leakage protecting plug can be disconnected timely and effectively; its principle is to utilize permutator selectively line current testing circuit or ground wire voltage testing circuit; " the portable residual current device (PRCD) without overcurrent protection of GB20044-2012 electric attachments domestic and similar applications " standard that country newly promulgates specifies: when being low to moderate AC50V at supply voltage; leading to when leakage current I △ n, earth leakage protective must action tripping.
At present, existing leakage protecting plug to reach this and require extremely difficult, controlled tight will not action, the easy slide fastener of pine, cause very big difficulty and cost loss to producing, bring puzzlement to user.And, in existing leakage protecting plug technology, the solenoid in electrical apparatus release is all adopt sub-thread enamel-covered wire coiling; this kind of solenoid internal resistance is generally higher; when supply voltage is normal, this flaw response is also inconspicuous, when supply voltage is relatively low; the electric current that solenoid produces is smaller; produced electromagnetic force is also little, when this type of situation, to thread off during power failure electric current; the fitness of each element is just required very high, does not somewhat note smooth and easy threading off.
Utility model content
The purpose of this utility model overcomes the defect that above-mentioned existing leakage protecting plug exists, it is provided that a kind of leakage protecting plug, it is possible to decrease produce the requirement to each parts, improves the first-pass yield of product, thus reducing cost, improves product quality.
nullThis utility model solves its technical problem and be the technical scheme is that a kind of leakage protecting plug，Including the electrical apparatus release being connected with power supply，It is characterized in that: described electrical apparatus release connects rectification circuit，One end of described rectification circuit connects controllable silicon，The other end is sequentially connected with current-limiting circuit and mu balanced circuit，Described mu balanced circuit includes the first mu balanced circuit and the second mu balanced circuit that are in parallel，The first described mu balanced circuit and the second mu balanced circuit connect the first amplifier and the second amplifier respectively，The first described amplifier connects the first protection module，First protection module connects phase zero current transformer，The second described amplifier connects the second protection module，Second protection module connects ground line current transformer，Described leakage protecting plug is additionally provided with power supply indicator and test circuit and overtemperature module，Described power supply indicator and test circuit and overtemperature module are connected in parallel between phase line and zero line respectively，And described test circuit passes through wire traverse phase zero current transformer with overtemperature module.
As preferably, the solenoid of described electrical apparatus release adopts bifilar coiling or multiply coiling.
Preferably, described current-limiting circuit is resistance or the assembly of electric capacity or resistance and electric capacity.
Preferably, the assembly that described first protection module and the second protection module are between resistance, electric capacity and diode to constitute.
Preferably, described phase zero current transformer and the iron core of ground line current transformer are made by permalloy or amorphous alloy or ultramicro-crystal alloy material.
Preferably, described power supply indicator is made up of LED and diode connecting.
Preferably, described leakage protecting plug also includes ground wire electrification malfunction indicator lamp, and described ground wire electrification malfunction indicator lamp is in parallel with electrical apparatus release after being contacted by neon lamp.
The beneficial effects of the utility model are: independently separated with ground wire detection of electrical leakage assembly by phase zero line detection of electrical leakage assembly; phase zero current transformer and ground wire transformer can be avoided to have signal produced interference when occurring simultaneously; also solve the problem causing the creepage protection function to consuming device when sharing an amplifying circuit and losing efficacy and the unexpected charged defencive function of ground wire being lost efficacy simultaneously simultaneously, thus safer and reliable.And make use of controllable silicon dexterously, only can be achieved with the detection weak current induction apparatus, sensing output with a controllable silicon and trigger silicon controlled circuit and zero sequence current mutual inductor detection, sense output and trigger silicon controlled circuit purpose separately, so not only two paths of signals separately can be processed but also provide cost savings.Leakage protecting plug of the present utility model is mainly used in the earth leakage protective of various household electrical appliance.
Accompanying drawing explanation
Fig. 1 is leakage protecting plug electrical schematic diagram.
Fig. 2 is the leakage protecting plug electronic schematic diagram of one embodiment of this utility model.
Detailed description of the invention
In order to make this utility model be solved the technical problem that, technical scheme and beneficial effect clearly understand, below in conjunction with accompanying drawing and embodiment, this utility model is further described.Should be appreciated that embodiment described herein is used only for explaining this utility model, be not used to limit this utility model.
nullAs shown in Figure 1，This utility model one leakage protecting plug，Including the electrical apparatus release 1 being connected with power supply，Electrical apparatus release 1 connects rectification circuit 2，One end of rectification circuit 2 connects controllable silicon 3，The other end is sequentially connected with current-limiting circuit 4 and mu balanced circuit，Mu balanced circuit includes the first mu balanced circuit 5 and the second mu balanced circuit 6 being in parallel，First mu balanced circuit 5 and the second mu balanced circuit 6 connect the first amplifier 7 and the second amplifier 8 respectively，First amplifier 7 connects the first protection module 9，First protection module 9 connects phase zero current transformer 11，Second amplifier 8 connects the second protection module 10，Second protection module 10 connects ground line current transformer 12，Leakage protecting plug is additionally provided with power supply indicator 13 and test circuit and overtemperature module 14，Power supply indicator 13 is made up of LED and diode connecting，Power supply indicator 13 and test circuit and overtemperature module 14 are connected in parallel between phase line and zero line respectively，And tested circuit and overtemperature module 14 by wire through phase zero current transformer 11；Leakage protecting plug also includes ground wire electrification malfunction indicator lamp 15, and ground wire electrification malfunction indicator lamp 15 is in parallel with electrical apparatus release 1 after being contacted by neon lamp.
As preferably, the solenoid of electrical apparatus release 1 adopts bifilar coiling or multiply coiling, this type of winding mode internal resistance is little, enough electric currents also it are provided that when voltage is low to moderate 50V, produce enough electromagnetic forces, to ensure can thread off smoothly when low-voltage, adopt bifilar or multiply coiling, the cooperation of correlated parts too high also need not can be reached requirement.Current-limiting circuit 4 is the assembly of resistance or electric capacity or resistance and electric capacity.The assembly that first protection module 9 and the second protection module 10 are between resistance, electric capacity and diode to constitute; be conducive to restriction faradic current and induced voltage; when preventing leakage current too big; faradic current or voltage cause too greatly the damage to the first amplifier 7 and the second amplifier 8; with anti-breakdown or burn the first amplifier 7 and the second amplifier 8; reach the purpose of protection the first amplifier 7 and the second amplifier 8, moreover it is possible to the interference of clutter reduction.The iron core of phase zero current transformer 11 and ground line current transformer 12 is made by permalloy or amorphous alloy or ultramicro-crystal alloy material.
Referring to Fig. 2; the leakage protecting plug of one embodiment of this utility model, mainly by plug body and phase, zero, three pole latches, the phase line of power end, zero line, ground wire, rectification circuit B1, current-limiting circuit R7, R8; R9; R10, R11, controllable silicon Q1, the 1st amplifying circuit U1, the 2nd amplifying circuit U2, phase zero Current Transmit 2, ground line current transformer CT1, test circuit R2, R3; TEST; T, the first protection module R4, R5, R6; D2; D3, C1, the second protection module R12, R13; R14; D8, D9, C9, electromagnetic trip and locker composition.Electromagnetic trip and locker are mainly made up of solenoid RL1 and drive circuit thereof, phase line switch contacts KEY1, zero line switch contacts KEY2, ground wire switch contacts KEY3, spring, reset push rod; leakage protecting plug also includes power on light R1; LED1; D1, ground wire malfunction coefficient lamp R1, L1.
In this example side circuit, supply current priority is that the first amplifying circuit U1 and the second amplifying circuit U2 powers through phase line switch contacts KEY1, solenoid RL1, current-limiting circuit R7, R8, R9, R10, R11；Phase zero Current Transmit 2 is protected module to be connected to the 1st amplifying circuit U1, ground line current transformer CT1 by first and is connected to the 2nd amplifying circuit by the second protection module；Power display circuit connects live wire and zero line；Ground wire indicating fault is parallel to ground wire switch contacts KEY3.
During use, the reset push rod of leakage protecting plug being pressed, phase line switch contacts KEY1, zero line switch contacts DEY2 and ground wire switch contacts KEY3 are all in closure state, normal ON；Power on light LED1 is bright；Load end connects match appliance；nullPhase zero line is in the middle of phase zero Current Transmit 2，When there is electric leakage in matching used electrical equipment,Phase zero Current Transmit 2 induces certain signal of telecommunication (current value or magnitude of voltage) by the exception between phase zero line，The signal of telecommunication flows through the first protection module and carries out simple process entrance the 1st amplifying circuit U1，By the 1st amplifying circuit U1, the signal of telecommunication is amplified，When leakage current reaches setting value (such as 10mA)，The signal of telecommunication can be amplified to that can drive can by the electric current required for silicon Q1 by the 1st amplifying circuit U1，Conducting controllable silicon Q1，Solenoid RL1 produces very big electric current，It is converted into electromagnetic force，Drive electrical apparatus release，Make phase line switch contacts KEY1,Zero line switch contacts KEY2，Ground wire switch contacts KEY3 moment disconnects，So that electric equipment products are separated with electric power system，Better protect personal safety；nullGround line current transformer CT1 traverse ground wire，If protection system to earth occurs extremely to cause the unexpected charged or matching used electric appliance casing of ground wire charged，Ground line current transformer CT1 produces the signal of telecommunication,Flow through the second protection module and carry out simple process entrance the 2nd amplifying circuit U2，By the 2nd amplifying circuit U2, the signal of telecommunication is amplified，When leakage current reaches setting value (such as 15mA)，The signal of telecommunication can be amplified to that can drive can by the electric current required for silicon Q1 by the 2nd amplifying circuit U2，Conducting controllable silicon Q1，Solenoid RL1 produces very big electric current，It is converted into electromagnetic force，Drive electrical apparatus release，Make phase line switch contacts KEY1,Zero line switch contacts KEY2，Ground wire switch contacts KEY3 moment disconnects，So that electric equipment products are separated with electric power system，Better protect personal safety.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all any amendment, equal replacement and improvement etc. made within spirit of the present utility model and principle, all should drop within protection domain of the present utility model.
Claims (7)
- null1. a leakage protecting plug，Including the electrical apparatus release being connected with power supply，It is characterized in that: described electrical apparatus release connects rectification circuit，One end of described rectification circuit connects controllable silicon，The other end is sequentially connected with current-limiting circuit and mu balanced circuit，Described mu balanced circuit includes the first mu balanced circuit and the second mu balanced circuit that are in parallel，The first described mu balanced circuit and the second mu balanced circuit connect the first amplifier and the second amplifier respectively，The first described amplifier connects the first protection module，First protection module connects phase zero current transformer，The second described amplifier connects the second protection module，Second protection module connects ground line current transformer，Described leakage protecting plug is additionally provided with power supply indicator and test circuit and overtemperature module，Described power supply indicator and test circuit and overtemperature module are connected in parallel between phase line and zero line respectively，And described test circuit passes through wire traverse phase zero current transformer with overtemperature module.
- 2. a kind of leakage protecting plug according to claim 1, it is characterised in that: the solenoid of described electrical apparatus release adopts bifilar coiling or multiply coiling.
- 3. a kind of leakage protecting plug according to claim 1, it is characterised in that: described current-limiting circuit is resistance or the assembly of electric capacity or resistance and electric capacity.
- 4. a kind of leakage protecting plug according to claim 1, it is characterised in that: the assembly that the first described protection module and the second protection module are between resistance, electric capacity and diode to constitute.
- 5. a kind of leakage protecting plug according to claim 1, it is characterised in that: described phase zero current transformer and the iron core of ground line current transformer are made by permalloy or amorphous alloy or ultramicro-crystal alloy material.
- 6. a kind of leakage protecting plug according to claim 1, it is characterised in that: described power supply indicator is made up of LED and diode connecting.
- 7. a kind of leakage protecting plug according to claim 1, it is characterised in that: described leakage protecting plug also includes ground wire electrification malfunction indicator lamp, and described ground wire electrification malfunction indicator lamp is in parallel with electrical apparatus release after being contacted by neon lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620130338.3U CN205406868U (en) | 2016-02-19 | 2016-02-19 | Electric leakage protection plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620130338.3U CN205406868U (en) | 2016-02-19 | 2016-02-19 | Electric leakage protection plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205406868U true CN205406868U (en) | 2016-07-27 |
Family
ID=56448014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620130338.3U Active CN205406868U (en) | 2016-02-19 | 2016-02-19 | Electric leakage protection plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205406868U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514722A (en) * | 2016-02-19 | 2016-04-20 | 佛山市新基德电子厂有限公司 | Electric leakage protection plug |
-
2016
- 2016-02-19 CN CN201620130338.3U patent/CN205406868U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514722A (en) * | 2016-02-19 | 2016-04-20 | 佛山市新基德电子厂有限公司 | Electric leakage protection plug |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8154832B2 (en) | Leak detection and leak protection circuit | |
| CN103579992B (en) | Voltage type leakage protection power line over-current protection device for electric heater | |
| CN202259980U (en) | Plug with ground wire live protection mechanism | |
| CN202424123U (en) | Electric leakage protector with high-sensitivity ground wire electrification protection function | |
| CN106299908A (en) | Possesses the protection plug of power-off tripping operation and superpressure trip avoidance function | |
| CN203536652U (en) | Electric leakage protection plug with overtemperature detection | |
| CN205406868U (en) | Electric leakage protection plug | |
| CN201138737Y (en) | Multifunctional leakage protecting equipment preventing earth wire to be charged and alarming | |
| CN201294366Y (en) | Creepage protector combining with power-supply plug | |
| CN203135399U (en) | Electric leakage protector | |
| CN105514722A (en) | Electric leakage protection plug | |
| CN204012649U (en) | The earth leakage protective device of adjustable sensitivity | |
| CN103135052A (en) | Breaker detector | |
| CN206712446U (en) | A kind of electromagnetic leakage protection circuit | |
| CN201402298Y (en) | Detection device for anomaly detection of zero line and earth wire of leakage protection device | |
| CN101533059B (en) | Device for detecting abnormity of zero line and ground wire of leakage protection device | |
| CN201142467Y (en) | Creepage protecting plug | |
| CN201230077Y (en) | Leakage protection plug | |
| CN203180491U (en) | Electric leakage protection device | |
| CN204349419U (en) | Power-off trip protection plug | |
| CN207134783U (en) | A kind of Novel box-type transformer overloads voltage-stabilizing protection device | |
| CN206672872U (en) | It is a kind of can the how many breaker of efficient detection load | |
| CN201674203U (en) | Electric wiring protective device | |
| CN206148923U (en) | SPD backup protection ware | |
| CN101907672A (en) | Earth wire electrification detection device for earth leakage protective device of electric water heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |