CN105914706A - Electric-shock-preventing power supply transformer - Google Patents
Electric-shock-preventing power supply transformer Download PDFInfo
- Publication number
- CN105914706A CN105914706A CN201610497785.7A CN201610497785A CN105914706A CN 105914706 A CN105914706 A CN 105914706A CN 201610497785 A CN201610497785 A CN 201610497785A CN 105914706 A CN105914706 A CN 105914706A
- Authority
- CN
- China
- Prior art keywords
- circuit
- power
- outfan
- power supply
- protection against
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/066—Reconnection being a consequence of eliminating the fault which caused disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
Abstract
The invention discloses an electric-shock-preventing power supply transformer. The transformer comprises a shell, wherein a power supply input interface is formed in the shell; the power supply input interface is connected with a power-off execution circuit used for cutting off the power supply, a main power supply conversion circuit used for converting the output power supply, and a power supply output interface in sequence; the power-off execution circuit is connected with an operational processing circuit; and a null line/live line electric leakage detection circuit used for detecting a current difference value between a live line and a null line is connected between the output end of the power supply input interface and the operational processing circuit, or/and an output end electric leakage detection circuit used for detecting the electric leakage current at the output end is arranged between the output end of the power supply conversion circuit and the operational processing circuit. Therefore, electric leakage detection on the input end and the output end of the transformer can be carried out; when electric leakage occurs, a power-off circuit is controlled to cut off the power supply connection; and in addition, an output end electric leakage guiding circuit is connected between the output end of the main power supply conversion circuit and the power supply input interface for guiding the leakage current to the ground, so that the safety of the transformer in use is improved.
Description
[technical field]
The present invention relates to a kind of protection against electric shock mains transformer.
[background technology]
In existing power supply changeover device and charger; its outfan major part is all independent; spacing isolation generally 7mm the most minimum between light current and the forceful electric power of input of outfan; and outfan does not has other safety protective circuits; therefore Changes in weather is worked as; steam is made to be set between light current and forceful electric power; or the foreign material of conduction, even toy climb into and just fall between light current and forceful electric power; outfan connects with input; output port may just directly electrically connect with city; now touch outfan when human body, exist for the potential safety hazard of human electric shock.
[summary of the invention]
Instant invention overcomes the deficiency of above-mentioned technology, it is provided that a kind of protection against electric shock mains transformer, the input of transformator and outfan can be carried out detection of electrical leakage, and control the connection of power-down circuit deenergization when electric leakage occurs, improve safety in utilization.
For achieving the above object, present invention employs following technical proposal:
A kind of protection against electric shock mains transformer, include shell 100, it is provided with power input interface 8 in described shell 100, described power input interface 8 is sequentially connected with the power-off for cutting off the electricity supply and performs circuit 2, for changing the main power conversion circuit 6 of out-put supply, power output interface 7, described power-off performs circuit 2 connection arithmetic processing circuit 3, it is connected, between described power input interface 8 outfan and arithmetic processing circuit 3, the zero live wire electric-leakage detection circuit 1 having for detecting current differential between live wire with zero line or/and be connected the outfan electric-leakage detection circuit 4 having for detecting outfan leakage current between main power conversion circuit 6 outfan and arithmetic processing circuit 3.
It is connected between described main power conversion circuit 6 outfan and power input interface 8 and has outfan electric leakage drain circuit 5.
Described arithmetic processing circuit 3 connects has in-line power circuit 9, described in-line power circuit 9 to be connected with outfan electric-leakage detection circuit 4.
Described power-off performs circuit 2 and connects the recovery device 10 having elimination to recover transformator work after leaking electricity.
Described arithmetic processing circuit 3 connects condition indication circuit 11.
It is relay or electrical apparatus release that described power-off performs circuit 2.
Described outfan electric-leakage detection circuit 4 is photoelectrical coupler or coil electromagnetism induction coupling.
Described main power conversion circuit 6 is electronic transformer or inductive transformer.
Described arithmetic processing circuit 3 is analog operational circuit or/and digital operational circuit.
Described power output interface 7 is power interface or USB interface.
The invention has the beneficial effects as follows:
The present invention is by zero live wire electric-leakage detection circuit detection power input electric leakage situation, and detects outfan leakage condition by outfan electric-leakage detection circuit, substantially increases the susceptiveness of detection of electrical leakage；When there is electric leakage, deenergization connects, and by input interface ground wire, outfan leakage current is transferred to big ground, eliminates electric leakage, it is to avoid user gets an electric shock, and improves safety in utilization.
[accompanying drawing explanation]
Fig. 1 is the structural representation of the present invention；
Fig. 2 is embodiments of the invention one circuit diagrams；
Fig. 3 is embodiments of the invention two circuit diagrams；
Fig. 4 is embodiments of the invention three-circuit figures；
Fig. 5 is embodiments of the invention four circuit diagrams；
Fig. 6 is embodiments of the invention five circuit diagrams；
Fig. 7 is embodiments of the invention six circuit diagrams；
Fig. 8 is embodiments of the invention seven circuit diagrams；
Fig. 9 is embodiments of the invention eight circuit diagrams；
Figure 10 is embodiments of the invention nine circuit diagrams.
[detailed description of the invention]
Accompanying drawing being merely cited for property explanation, it is impossible to be interpreted as the restriction to this patent；In order to the present embodiment is more preferably described, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product, structure, circuit；To those skilled in the art, in accompanying drawing, some known circuits, structure and explanation thereof may will be understood by omission.Being merely cited for property of circuit relationships explanation described in accompanying drawing, it is impossible to be interpreted as the restriction to this patent.
It is described in further detail with embodiments of the present invention below in conjunction with the accompanying drawings:
As shown in Figure 1, a kind of protection against electric shock mains transformer, include shell 100, it is provided with power input interface 8 in described shell 100, described power input interface 8 is sequentially connected with the power-off for cutting off the electricity supply and performs circuit 2, for changing the main power conversion circuit 6 of out-put supply, power output interface 7, described power-off performs circuit 2 connection arithmetic processing circuit 3, it is connected, between described power input interface 8 outfan and arithmetic processing circuit 3, the zero live wire electric-leakage detection circuit 1 having for detecting current differential between live wire with zero line or/and be connected the outfan electric-leakage detection circuit 4 having for detecting outfan leakage current between main power conversion circuit 6 outfan and arithmetic processing circuit 3.
Wherein, it is connected between described main power conversion circuit 6 outfan and power input interface 8 and has outfan electric leakage drain circuit 5, it is relay or electrical apparatus release that described power-off performs circuit 2, described outfan electric-leakage detection circuit 4 is photoelectrical coupler or coil electromagnetism induction coupling, described main power conversion circuit 6 is electronic transformer or inductive transformer, described arithmetic processing circuit 3 be analog operational circuit or/and digital operational circuit, described power output interface 7 is power interface or USB interface.
Operation principle is as follows:
Transformator works; civil power is transferred to main power conversion circuit 6 by power input interface 8; by main power conversion circuit 6, civil power is converted into the power supply needed for user again; and exported by power output interface 7; during transformator works; when zero live wire electric-leakage detection circuit 1 detects appearance electric leakage at the power input interface 8 of input; input electric leakage signal is transferred to arithmetic processing circuit 3; arithmetic processing circuit 3 controls power-off execution circuit 2 and works; cut off the electricity supply, play the leakage protection of input.
In like manner; when outfan electric-leakage detection circuit 4 detects that electric leakage occurs in the power output interface 7 of outfan; and leakage current sufficiently large time; output end signal is transferred to arithmetic processing circuit 3; arithmetic processing circuit 3 controls power-off execution circuit 2 work and cuts off the electricity supply; and by outfan electric leakage drain circuit 5 by direct for leakage current carrying-off to power input interface 8, leakage current is guided to the earth, it is achieved the leakage protection of outfan.
Wherein, described power-off performs circuit 2 and connects the recovery device 10 having elimination to recover transformator work after leaking electricity, recovery device 10 can be machinery or automatically electronic circuit or the electronic circuit for manual operation of manual operation, it is achieved recover the normal work of mains transformer after eliminating electric leakage.
Described arithmetic processing circuit 3 connects condition indication circuit 11, condition indication circuit 11, for indicating the duty of whole mains transformer, can carry out indicating, carrying out indicating or playing alternative sounds by loudspeaker indicating by display screen display different images by the lamp of different colours.
Described arithmetic processing circuit 3 connects has in-line power circuit 9, described in-line power circuit 9 to be connected with outfan electric-leakage detection circuit 4, and in-line power circuit 9 can be from power input interface 8 power taking, power output interface 7 power taking or independent current source.
Embodiment one:
As shown in Figure 2; a kind of typical application circuit for this case; operation principle is: detect the electric leakage situation at power input interface 8 by zero live wire electric-leakage detection circuit 1; and the electric leakage signal detected is transferred to arithmetic processing circuit 3; arithmetic processing circuit 3 controls power-off execution circuit 2 and cuts off the electricity supply, and plays the leakage protection of input；The electric leakage situation of power output interface 7 is detected by outfan electric-leakage detection circuit 4; output end signal is transferred to arithmetic processing circuit 3; arithmetic processing circuit 3 controls power-off execution circuit 2 and cuts off the electricity supply; and by outfan electric leakage drain circuit 5 by direct for leakage current carrying-off to power input interface 8; leakage current is guided to the earth, it is achieved the leakage protection of outfan；After eliminating electric leakage, resumed work by recovery device 10.
Embodiment two:
As shown in Figure 3; circuit employs electrical apparatus release; electrical apparatus release can realize power-off and perform circuit 2 and recovery device 10; after in-line power circuit 9 is arranged on power-off execution circuit 2; zero live wire electric-leakage detection circuit 1 and outfan electric-leakage detection circuit 4 can carry out detection of electrical leakage to input, outfan and carry out earth leakage protective respectively; and outfan leakage current is carried out drain, eliminate electric leakage.
Embodiment three:
As shown in Figure 4, circuit is not provided with recovery device 10, normally closed relay is used in power-off performs circuit 2, after leaking electricity, final driving normally closed relay disconnects and cuts off internal electric source, when needs are resumed work, after power input interface 8 external hand deenergization, normally closed relay re-closes, before in-line power circuit 9 is arranged on power-off execution circuit 2, zero live wire electric-leakage detection circuit 1 and outfan electric-leakage detection circuit 4 can be respectively to inputs, outfan carries out detection of electrical leakage and carries out earth leakage protective, and outfan leakage current is carried out drain, eliminate electric leakage.
Embodiment four:
As it is shown in figure 5, circuit is not provided with outfan testing circuit 4, it is only capable of input rising detection electric leakage and carrying out earth leakage protective, and outfan leakage current can be carried out drain, eliminate electric leakage.
Embodiment five:
As shown in Figure 6, circuit is not provided with outfan testing circuit 4, outfan electric leakage drain circuit 5, only input is risen detection electric leakage and carries out earth leakage protective.
Embodiment six:
As it is shown in fig. 7, circuit arranges power input interface 8, outfan electric leakage drain circuit 5, main power conversion circuit 6 and power output interface 7, outfan leakage current is carried out drain, eliminates electric leakage.
Embodiment seven:
As shown in Figure 8, circuit is not provided with zero live wire electric-leakage detection circuit 1, outfan is risen detection electric leakage and carries out earth leakage protective, and outfan leakage current can be carried out drain, eliminating electric leakage.
Embodiment eight:
As it is shown in figure 9, circuit arranges power input interface 8, outfan electric leakage drain circuit 5, main power conversion circuit 6 and power output interface 7, and utilize stabilivolt to be directly accessed positive source, outfan leakage current is carried out drain, eliminates electric leakage.
Embodiment nine:
As shown in Figure 10, in circuit, in-line power circuit 9 power supply mode is different, can carry out input, outfan detection of electrical leakage and carry out earth leakage protective respectively, and outfan leakage current carries out drain, eliminates electric leakage.
Obviously, the above embodiment of the present invention is only for clearly demonstrating example of the present invention, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.All any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, within should be included in the protection domain of the claims in the present invention.
Claims (10)
1. a protection against electric shock mains transformer, it is characterised in that: include shell (100), described outside
Being provided with power input interface (8) in shell (100), described power input interface (8) is sequentially connected with
The power-off for cutting off the electricity supply is had to perform circuit (2), for changing the main power source conversion electricity of out-put supply
Road (6), power output interface (7), described power-off performs circuit (2) connection arithmetic processing circuit
(3), be connected between described power input interface (8) outfan with arithmetic processing circuit (3) useful
Between detection live wire and zero line, zero live wire electric-leakage detection circuit (1) of current differential is or/and main power source
It is connected between change-over circuit (6) outfan with arithmetic processing circuit (3) and has for detecting outfan leakage
The outfan electric-leakage detection circuit (4) of electricity electric current.
A kind of protection against electric shock mains transformer the most according to claim 1, it is characterised in that: described
Being connected between main power conversion circuit (6) outfan with power input interface (8) has outfan to leak electricity
Drain circuit (5).
A kind of protection against electric shock mains transformer the most according to claim 1, it is characterised in that: described
Arithmetic processing circuit (3) connects an in-line power circuit (9), described in-line power circuit (9) with
Outfan electric-leakage detection circuit (4) connects.
A kind of protection against electric shock mains transformer the most according to claim 1, it is characterised in that: described
Power-off performs circuit (2) and connects the recovery device (10) having elimination to recover transformator work after leaking electricity.
A kind of protection against electric shock mains transformer the most according to claim 1, it is characterised in that: described
Arithmetic processing circuit (3) connects condition indication circuit (11).
A kind of protection against electric shock mains transformer the most according to claim 1, it is characterised in that: described
It is relay or electrical apparatus release that power-off performs circuit (2).
A kind of protection against electric shock mains transformer the most according to claim 1, it is characterised in that: described
Outfan electric-leakage detection circuit (4) is photoelectrical coupler or coil electromagnetism induction coupling.
A kind of protection against electric shock mains transformer the most according to claim 1, it is characterised in that: described
Main power conversion circuit (6) is electronic transformer or inductive transformer.
A kind of protection against electric shock mains transformer the most according to claim 1, it is characterised in that: described
Arithmetic processing circuit (3) is analog operational circuit or/and digital operational circuit.
A kind of protection against electric shock mains transformer the most according to claim 1, it is characterised in that: institute
Stating power output interface (7) is power interface or USB interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610497785.7A CN105914706A (en) | 2016-06-27 | 2016-06-27 | Electric-shock-preventing power supply transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610497785.7A CN105914706A (en) | 2016-06-27 | 2016-06-27 | Electric-shock-preventing power supply transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105914706A true CN105914706A (en) | 2016-08-31 |
Family
ID=56753730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610497785.7A Pending CN105914706A (en) | 2016-06-27 | 2016-06-27 | Electric-shock-preventing power supply transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105914706A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107749612A (en) * | 2017-11-28 | 2018-03-02 | 毛春梅 | A kind of power transformer with DC leakage protection |
| CN107785868A (en) * | 2017-11-09 | 2018-03-09 | 南通盛洋电气有限公司 | The transformer leakage protection system of real-time earthing water conservancy diversion |
| CN107863754A (en) * | 2017-11-09 | 2018-03-30 | 南通盛洋电气有限公司 | A kind of transformer leakage stream automatic earthing electric installation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2652004Y (en) * | 2003-10-21 | 2004-10-27 | 吴茂宗 | Automatic leakage and cut-off protector |
| CN201682263U (en) * | 2010-05-19 | 2010-12-22 | 王士纲 | Leakage protection device |
| CN202034814U (en) * | 2011-04-14 | 2011-11-09 | 上海埃士工业科技有限公司 | Portable charger for electric vehicle |
| CN103187704A (en) * | 2013-03-28 | 2013-07-03 | 余姚市嘉荣电子电器有限公司 | Leakage protection device for preventing electrification of ground wire |
| CN104425997A (en) * | 2013-08-23 | 2015-03-18 | 重庆瑞升康博电气有限公司 | Intelligent static safe energy-saving multifunctional socket with zero power consumption |
| CN205724839U (en) * | 2016-06-27 | 2016-11-23 | 毛春梅 | A kind of protection against electric shock mains transformer |
-
2016
- 2016-06-27 CN CN201610497785.7A patent/CN105914706A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2652004Y (en) * | 2003-10-21 | 2004-10-27 | 吴茂宗 | Automatic leakage and cut-off protector |
| CN201682263U (en) * | 2010-05-19 | 2010-12-22 | 王士纲 | Leakage protection device |
| CN202034814U (en) * | 2011-04-14 | 2011-11-09 | 上海埃士工业科技有限公司 | Portable charger for electric vehicle |
| CN103187704A (en) * | 2013-03-28 | 2013-07-03 | 余姚市嘉荣电子电器有限公司 | Leakage protection device for preventing electrification of ground wire |
| CN104425997A (en) * | 2013-08-23 | 2015-03-18 | 重庆瑞升康博电气有限公司 | Intelligent static safe energy-saving multifunctional socket with zero power consumption |
| CN205724839U (en) * | 2016-06-27 | 2016-11-23 | 毛春梅 | A kind of protection against electric shock mains transformer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785868A (en) * | 2017-11-09 | 2018-03-09 | 南通盛洋电气有限公司 | The transformer leakage protection system of real-time earthing water conservancy diversion |
| CN107863754A (en) * | 2017-11-09 | 2018-03-30 | 南通盛洋电气有限公司 | A kind of transformer leakage stream automatic earthing electric installation |
| CN107863754B (en) * | 2017-11-09 | 2019-08-02 | 南通盛洋电气有限公司 | A kind of transformer leakage stream automatic earthing electric installation |
| CN107749612A (en) * | 2017-11-28 | 2018-03-02 | 毛春梅 | A kind of power transformer with DC leakage protection |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160831 |
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| RJ01 | Rejection of invention patent application after publication |