CN105552824B - The working power acquisition methods and device of a kind of novel electric shock or earth leakage protective device - Google Patents
The working power acquisition methods and device of a kind of novel electric shock or earth leakage protective device Download PDFInfo
- Publication number
- CN105552824B CN105552824B CN201610077362.XA CN201610077362A CN105552824B CN 105552824 B CN105552824 B CN 105552824B CN 201610077362 A CN201610077362 A CN 201610077362A CN 105552824 B CN105552824 B CN 105552824B
- Authority
- CN
- China
- Prior art keywords
- electric appliance
- power
- appearance
- electric
- appliance appearance
- 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
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
- H02H3/02—Details
- H02H3/05—Details with means for increasing reliability, e.g. redundancy arrangements
-
- 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
Abstract
It is a kind of electric shock or earth leakage protective device working power acquisition methods and device.Specific system is embodied as, and electric shock or earth leakage protective device obtain working power by power channel；Power channel connecting circuit appearance, electric appliance phase line or the electric appliance neutral conductor, wherein power channel is connected to electric appliance appearance by threshold values switching device, is in off-state under normal wiring condition.When wrong power supply line or other reasons cause electric appliance appearance to charge, threshold values switching device is in on-state, and power channel is connected to electric appliance appearance.Both ensured that electric shock or earth leakage protective device can still obtain working power under wrong power conditions; in turn avoiding has weak current to pass through from power channel under normal wiring condition returns to power ground with the line of electric appliance appearance, leads to the residual current operated protective device being connected in same supply network（RCD）Tripping.
Description
Technical field
The present invention relates to a kind of working power acquisition methods and device, more particularly to a kind of electric shock or earth leakage protective device
Working power acquisition methods and device.
Background technique
Common electric shock or earth leakage protective device connecting circuit firewire and the neutral conductor obtain working power, when wiring error makes electricity
The electrification of device appearance may cause electric shock accidents.For example, user mistakenly connects the ground line of connecting circuit appearance and electric appliance firewire
It has been connected to the firewire and the neutral conductor of power supply, has caused electric appliance appearance to be charged, user, which touches, to be shocked by electricity, at this moment, due to original
Electric appliance firewire there is no electricity, the working power of protector lacks, and protector cannot work, and loses defencive function.Middle promulgated by the State Council
Bright patent 2011103850964《The detection means of defence and system of electricity leakage on outer surface of electrical equipment》Give a kind of power channel method and
System, can ensure to get an electric shock in wrong power supply line or earth leakage protective device obtains working power.But in practical application, due to electricity
Source channels and electric appliance appearance, electric appliance phase line or the electric appliance neutral conductor directly or indirectly connect, in power ground and electric appliance appearance
In the case where connection, weak current is had from power channel by returning to power ground with the line of electric appliance appearance, causes to flow through electricity
The electric current of source firewire and the neutral conductor is unequal, may result in the residual current operated protective device being connected in same supply network
（RCD）Tripping, influences user power utilization.
Summary of the invention
It is an object of the invention to overcome the above-mentioned deficiency of first method and system, a kind of new electric shock or guarantor of leaking electricity are proposed
The working power acquisition methods and device for protecting device, to the residual current in supply network when can eliminate existing power supply channels operation
The interference of protector, it is ensured that the normal work of electric shock or earth leakage protective device.
Above-mentioned purpose of the invention can be realized using following technical scheme.It is proposed a kind of new electric shock or earth leakage protective
The working power acquisition methods of device：
1. the working power acquisition methods of a kind of electric shock or earth leakage protective device, which is characterized in that electric shock or earth leakage protective device
By obtaining working power with the power channel of electric appliance appearance, the electric appliance neutral conductor or electric appliance phase line direct or indirect connection;Including
Following steps:1. power channel is connected to electric appliance appearance, mains neutral line or power firestreak, wherein the company with electric appliance appearance
Connect disconnection;2. powering on the connection in channel Yu electric appliance appearance when the electrification of electric appliance appearance.
Power channel is not connected to electric appliance appearance when wiring normal due to power supply line, and it is logical from power supply to avoid weak current
Road passes through the interference returned caused by power ground to the residual current operated protective device in same supply network with the line of electric appliance appearance.
The working power acquisition methods of above-mentioned purpose and electric shock or earth leakage protective device to realize the present invention, propose a kind of touching
The working power acquisition device of electricity or earth leakage protective device：
It is a kind of electric shock or earth leakage protective device working power acquisition device, which is characterized in that including：With electric appliance appearance, electricity
The power channel of device phase line or electric appliance neutral conductor direct or indirect connection；Power channel is connected to electric appliance by threshold values switching device
Appearance.
It is a kind of electric shock or earth leakage protective device working power acquisition device, which is characterized in that the threshold values switching device exists
It is in off-state when electric appliance appearance is not charged, disconnects the connection of power channel and electric appliance appearance.
It is a kind of electric shock or earth leakage protective device working power acquisition device, which is characterized in that the threshold values switching device exists
It is in on-state when electric appliance appearance is charged, power channel is connected to electric appliance appearance.
It is a kind of electric shock or earth leakage protective device working power acquisition device, which is characterized in that it is described to connect power channel
It is connected to electric appliance appearance, is to be acted by threshold values switching device control switch or itself is connected to realize, so that electric shock or electric leakage
Protector can obtain working power by the connection with electric appliance appearance.
It is a kind of electric shock or earth leakage protective device working power acquisition device, which is characterized in that described threshold values switching device,
It can be relay, relay coil one connects mains neutral line, other end circuit closer appearance, relay normally open contact connection electricity
Source channels and electric appliance appearance, the actuating of relay when the electrification of electric appliance appearance, normally opened contact closure power on outside channel and electric appliance
The connection of table；It is also possible to voltage-sensitive component（For example, bilateral diode, varistor, gas-discharge tube etc.）, series connection
Between power channel and electric appliance appearance, when the electrification of electric appliance appearance, the voltage at voltage-sensitive component both ends is higher than voltage-sensitive
The conducting threshold values of component, voltage-sensitive component conducting, powers on the connection in channel Yu electric appliance appearance.
Compared with prior art, the beneficial effect of the method and device of aforementioned present invention is beneficial effect：
By causing electric appliance appearance just to power on outside channel and electric appliance when charging in wrong power supply line or other reasons
The connection of table had both ensured that electric shock or earth leakage protective device can obtain working power under wrong power conditions, in turn avoided pair
The interference of the Aftercurrent protecting equipment of same supply network.Improve system reliability.
Detailed description of the invention Fig. 1 is method flow block diagram of the invention.
Fig. 2 is systematic schematic diagram of the invention.
Fig. 3 is the schematic diagram of the embodiment of the present invention 1.
Fig. 4 is the schematic diagram of the embodiment of the present invention 2.
Invention is further described in detail below in conjunction with each attached drawing for specific embodiment.
Fig. 1 is the flow diagram of the method for the present invention.The working power acquisition methods of present invention electric shock or earth leakage protective device,
Be characterized in that, electric shock or earth leakage protective device by with electric appliance appearance, the electric appliance neutral conductor or electric appliance phase line direct or indirect connection
Power channel obtains working power;Including step as shown in fig. 1:1. power channel is connected to electric appliance appearance, mains neutral
Line or power firestreak, wherein the connection with electric appliance appearance disconnects;2. powering on channel and electric appliance when the electrification of electric appliance appearance
The connection of appearance.
Fig. 2 is systematic schematic diagram of the invention.In Fig. 2, the conducting wire S that connect with electric appliance appearance 4 is due to electric appliance appearance etc.
Current potential, also referred to as electric appliance appearance S.Electric shock or earth leakage protective device 1 pass through the acquisition working power of power channel 2；Power channel
Input terminal connecting circuit appearance S, mains neutral line N ' or power firestreak L ', wherein being opened with the connection of electric appliance appearance S by threshold values
It closes device 3 to control, electric appliance appearance is not charged under normal wiring condition, and threshold values switching device 3 disconnects power channel and electric appliance appearance S
Connection, when wiring error or other reasons cause electric appliance appearance to charge, threshold values switching device 3 powers on channel
With the connection of electric appliance appearance S, enable power channel 2 by the connection with electric appliance powered surfaces S, obtains electric shock or electric leakage is protected
It protects device 1 and works normally the working power needed.
There are two types of the constructions of threshold values switching device.One is electric potential type, by connection mains neutral line and electric appliance appearance after
Electric apparatus coil serves as the detector to electric appliance appearance current potential.When current potential of the electric appliance appearance to mains neutral line is greater than relay coil
Pick-up voltage, relay be attracted, power on the connection in channel Yu electric appliance appearance S.The threshold values switching device of this construction
Operating valve value is exactly the pick-up voltage of relay.Another kind is voltage-type, by being series between power channel and electric appliance appearance
Voltage-sensitive component is constituted, and when the electrification of electric appliance appearance, the voltage between electric appliance appearance and mains neutral line is in voltage-sensitive
Component both ends generate pressure drop, which is higher than the conducting threshold values of voltage-sensitive component, and component conducting powers on channel
With the connection of electric appliance appearance.The operating valve value of the threshold values switching device of this construction is exactly the conducting valve of voltage-sensitive component
Value.
Specific embodiment 1：
Fig. 3 is the schematic diagram of the embodiment of the present invention 1.In Fig. 3, resistance R, rectifier diode D and relay constitute current potential
The threshold values switching device of type.Resistance R, rectifier diode D and relay coil C be series at mains neutral line and electric appliance appearance it
Between, the normally opened contact of relay is series between power channel and electric appliance appearance.When electric appliance appearance is charged, relay coil C is logical
It crosses the rectification branch that resistance R and diode D is constituted and obtains DC voltage, which is higher than the pick-up voltage of relay coil C, after
Electric appliance is attracted, and normally opened electric shock closure has connected the connection of power channel and electric appliance appearance.
Specific embodiment 2：
Fig. 4 and Fig. 2 has collectively showed that the working principle of the embodiment of the present invention 2.In the present embodiment, voltage-sensitive component structure
At the threshold values switching device of voltage-type.Threshold values switching device 3 shown in Fig. 2 can be the bilateral diode as shown in Fig. 4 (a)
(DIAC), varistor (VDR) or gas-discharge tube (GDT), since electric shock or earth leakage protective device are charged in electric appliance appearance
Moment acts the connection for disconnecting power supply and load to also cut off the working power of itself immediately, and threshold values switching device connects
The real time for connecing the electric appliance appearance of power channel and electrification is very short, therefore voltage-sensitive component can be directly connected to electricity
Between source channels and electric appliance appearance.It, can be using such as Fig. 4 (b) for requiring the electric shock earth leakage protective device of larger operating current
Shown in circuit, voltage-sensitive component shown in 4 (a) is connected to the control terminal of bidirectional triode thyristor, when voltage-sensitive component
（The present embodiment uses bilateral diode DIAC, and resistance R is used for current limliting）Both end voltage is greater than the conducting of voltage-sensitive component
Threshold values, voltage-sensitive component, triggering bidirectional triode thyristor TRIAC conducting power on the connection in channel and electric appliance appearance.
Threshold values switching device 3 of the present invention can also use the relay or voltage-sensitive component of type, not influence this
The implementation of inventive method and system function are realized.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention.All utilizations
Equivalent structure or the process transformation that description of the invention and accompanying drawing content are done, are directly or indirectly applied in other relevant technologies
Field is included within the scope of the present invention.
Claims (4)
1. the working power acquisition methods of a kind of electric shock or earth leakage protective device, which is characterized in that electric shock or earth leakage protective device pass through
With electric appliance appearance, the power channel of mains neutral line or power supply phase line direct or indirect connection obtains working power；Including following
Step：1. by power channel and mains neutral line or power firestreak connection, with electric appliance appearance not connection to avoid to same confession
The interference of the Aftercurrent protecting equipment of electric network；The interference for avoiding the Aftercurrent protecting equipment to same supply network
It is realized when electric appliance appearance is not charged in off-state by threshold values switching device；2. when wrong power supply makes the outer watchband of electric appliance
By power channel and electric appliance appearance connection to obtain working power when electric；Working power is obtained under wrong power conditions passes through valve
Value switching device is realized when electric appliance appearance is charged in on-state.
2. the working power acquisition device of a kind of electric shock or earth leakage protective device, which is characterized in that including：With electric appliance appearance, power supply
The power channel of phase line or mains neutral line direct or indirect connection；Threshold switch of connecting between power channel and electric appliance appearance dress
It sets to avoid the interference of the Aftercurrent protecting equipment to same supply network and obtains working power under wrong power conditions；
It is described avoid the interference to the Aftercurrent protecting equipment of same supply network by threshold values switching device electric appliance appearance without
It is realized when electric in off-state；The working power that obtains under wrong power conditions passes through threshold values switching device outside electric appliance
It is realized when watchband electricity in on-state.
3. the apparatus of claim 2, which is characterized in that described threshold values switching device electric appliance appearance charge when be in
On-state is to be acted by threshold values switching device control switch or itself is connected to realize, so that electric shock or earth leakage protective
Device can obtain working power by the connection with electric appliance appearance.
4. the apparatus of claim 2, which is characterized in that when described threshold values switching device is relay, relay
Device coil one connects mains neutral line, other end circuit closer appearance, and relay normally open contact connects power channel and electric appliance appearance,
The actuating of relay when the electrification of electric appliance appearance, normally opened contact closure power on the connection in channel Yu electric appliance appearance；When described
It when threshold switch device is voltage-sensitive component, is connected between power channel and electric appliance appearance, when the electrification of electric appliance appearance
The voltage at voltage-sensitive component both ends is higher than the conducting threshold values of voltage-sensitive component, and the conducting of voltage-sensitive component is connected
The connection of power channel and electric appliance appearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610077362.XA CN105552824B (en) | 2016-02-03 | 2016-02-03 | The working power acquisition methods and device of a kind of novel electric shock or earth leakage protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610077362.XA CN105552824B (en) | 2016-02-03 | 2016-02-03 | The working power acquisition methods and device of a kind of novel electric shock or earth leakage protective device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105552824A CN105552824A (en) | 2016-05-04 |
| CN105552824B true CN105552824B (en) | 2018-11-20 |
Family
ID=55831841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610077362.XA Active CN105552824B (en) | 2016-02-03 | 2016-02-03 | The working power acquisition methods and device of a kind of novel electric shock or earth leakage protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105552824B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2077532A (en) * | 1980-06-04 | 1981-12-16 | Gen Electric Co Ltd | Earth leakage protection arrangement |
| CN2234660Y (en) * | 1995-03-23 | 1996-09-04 | 谭均恒 | Multifunctional electric leakage protection switch |
| CN1716723A (en) * | 2004-03-16 | 2006-01-04 | 魏晋祥 | Leakage potential type action protector |
| CN103107514B (en) * | 2011-11-12 | 2015-12-16 | 吴伟 | The detection means of defence of electricity leakage on outer surface of electrical equipment and system |
-
2016
- 2016-02-03 CN CN201610077362.XA patent/CN105552824B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105552824A (en) | 2016-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111864694B (en) | Residual current protection circuit | |
| EP1446675A4 (en) | Determining electrical faults on undergrounded power systems using directional element | |
| CN102623947B (en) | A kind of earth leakage protective device with phase line handoff functionality | |
| CN104009448A (en) | Novel leakage protection method and novel leakage protection device with live and neutral wire identification function | |
| CN107404106B (en) | Electric leakage simulation test circuit, electric leakage protector and electric leakage protection method | |
| CN204967236U (en) | Leakage protector | |
| US9564891B1 (en) | Low conducted emission solid state switch | |
| KR20200019089A (en) | Ultra low emission solid state relay | |
| CN105337252A (en) | Earth leakage protection apparatus having self-checking function | |
| CN204177857U (en) | A kind of overvoltage/undervoltage decision circuitry and over under-voltage protection circuit | |
| CN105552824B (en) | The working power acquisition methods and device of a kind of novel electric shock or earth leakage protective device | |
| CN104377647A (en) | Electric leakage protection circuit | |
| EP3012853B1 (en) | Electrical safety device miswire detection | |
| CN204205560U (en) | leakage protection circuit | |
| CN213817234U (en) | Protection circuit for AC220V equipment connected to AC380V | |
| CN205565671U (en) | Novel electric shock or earth -leakage protector's working power supply acquires device | |
| CN105021936A (en) | Method and electric device for detecting electric leakage | |
| CN105098705B (en) | A kind of earth leakage protective device | |
| TW201505874A (en) | Electric vehicle supply equipment and method of operating the same | |
| CN203275565U (en) | Multifunctional grounding detector | |
| CN205811516U (en) | Power-off protecting circuit | |
| CN104901090A (en) | Voltage conversion type earth leakage protection plug | |
| CN104283190A (en) | Device and method for protecting against leakage currents | |
| CN204103449U (en) | There is the earth leakage protective device of self-checking function, electrical connection equipment and power consumption equipment | |
| CN210724190U (en) | Electric leakage circuit breaker with anti-power interference function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |