CN207338820U - A kind of low-power consumption leakage protecting plug - Google Patents
A kind of low-power consumption leakage protecting plug Download PDFInfo
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- CN207338820U CN207338820U CN201721243879.8U CN201721243879U CN207338820U CN 207338820 U CN207338820 U CN 207338820U CN 201721243879 U CN201721243879 U CN 201721243879U CN 207338820 U CN207338820 U CN 207338820U
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Abstract
A kind of low-power consumption leakage protecting plug; including zero sequence current mutual inductor, electromagnetic trip and locker; the device is equipped with electromagnetic coil and its rectification circuit in drive circuit, the 1st silicon-controlled, amplifying circuit, the 1st resistance; power control circuit is additionally provided with, the power control circuit and the 1st resistor coupled in parallel are connected between the power end of rectification circuit output cathode end and the amplifying circuit.Not only when normal line voltage uses, power consumption is very low for this low-power consumption leakage protecting plug; and remain to work under low-power consumption situation when line voltage falls to very low, so as to preferably meet earth leakage protective requirement of the user under the power supply environment of such wide-voltage range.
Description
Technical field
Electrical Safety protection technique field is the utility model is related to, more particularly, to a kind of low-power consumption leakage protecting plug.
Background technology
The world today is as the improvement of people's living standards, people are also higher and higher to the consciousness of energy-saving low-carbon and requirement
Rise.In existing leakage protecting plug, usually drop is provided between the power end and rectification circuit output end of amplifying circuit
Current-limiting resistance is pressed, the control circuit of such leakage protecting plug is after the rectified circuit rectifies of alternating current 220V power supply that alternating current obtains
Output DC voltage is simultaneously depressured through decompression current-limiting resistance, provides the DC supply of low pressure after current limliting for amplifying circuit.
Requirement according to concerned countries standard at the same time, when supply voltage falls to low voltage（Such as 50V）Shi Bixu continues to work simultaneously
Earth leakage protective is provided.Therefore the current-limiting resistance for working power being provided for amplifying circuit is usually all chosen less resistance value and could be protected
Card leakage protecting plug is falling to low voltage in supply voltage（Such as 50V）When still be able to work normally, but so again can make
Into 220V using when since the power consumption of the small consumption of current-limiting resistance resistance value is big cause leakage protecting plug Overall Power Consumption very big
The problem of.If current-limiting resistance is chosen larger resistance value, although leakage protecting plug power consumption is smaller in 220V,
Operating voltage and electric current necessary to cannot be provided when supply voltage falls to low voltage for amplifying circuit are provided again, as a result made
It cannot continue to provide safeguard protection under compared with low suppling voltage environment into the leakage protecting plug.
Utility model content
The purpose of this utility model is to provide a kind of low-power consumption leakage protecting plug, it is not only in normal mains supply electricity
Pressure use when power consumption it is very low, and can also when mains voltage fall to it is very low（Such as 50V）When still can be in low-power consumption feelings
Work under condition, so as to preferably meet earth leakage protective requirement of the user under the power supply environment of such wide-voltage range.
The technical solution that the utility model is proposed is such：A kind of low-power consumption leakage protecting plug, includes
Zero sequence current mutual inductor that shell, phase pole copper latch, zero pole copper latch, phase line, zero curve, phase line and zero curve both pass through, test back
Road and electromagnetic trip and locker, the electromagnetic trip and locker include electromagnetic coil and its drive circuit, phase line contact,
Zero curve contact, the drive circuit of the electromagnetic coil are mainly made of rectification circuit, the 1st silicon-controlled, amplifying circuit, the 1st resistance,
The secondary windings output terminal of the zero sequence current mutual inductor is connected with the input terminal of the amplifying circuit, described 1st resistance one end
It is connected with the rectification circuit output cathode end, the 1st resistance other end is connected with the power end of the amplifying circuit, is also set
There is power control circuit, the power control circuit is connected to the rectification circuit output cathode end with the 1st resistor coupled in parallel
Between the power end of the amplifying circuit, the power control circuit is equipped with the 2nd resistance, the 3rd resistance, the 4th resistance, the 5th
It is resistance, the 6th resistance, triode, the 2nd silicon-controlled；Described 2nd resistance one end, the 3rd resistance one end be connected after with the 1st resistance one end,
Rectification circuit output cathode end connects, and the 2nd resistance other end is connected with the 2nd silicon-controlled anode tap, the 3rd resistance other end and the 4th
Resistance one end, the 6th resistance one end are connected, and the 4th resistance other end is connected with the 5th resistance one end, transistor base end, and the 6th
The resistance other end is extremely connected with transistor collector end, the 2nd SCR control, the 5th resistance other end, transistor emitter
End, the 2nd silicon-controlled cathode terminal, the 1st resistance other end are connected with the power end of amplifying circuit.
Compared with prior art, the utility model has the advantages that：
(1), the low-power consumption leakage protecting plug of the utility model makes in normal alternating current due to being provided with power control circuit
Power consumption when supply voltage 220V is used is very low, is about the 1/4 of existing leakage protecting plug power consumption, i.e., the utility model is low
Power consumption of the power consumption leakage protecting plug in supply voltage 220V is equivalent to existing leakage protecting plug in supply voltage 50V
Power consumption, while also assures that and can still be worked normally when mains voltage is reduced to 50V from normal 220V；Meet use
Earth leakage protective requirement of the family under the power supply environment of so big voltage range 220V~50V, has ensured the Electrical Safety of people.
(2), the power control circuit set by the low-power consumption leakage protecting plug of the utility model mains supply it is high,
Low-voltage change in realize automatic conversion control, when mains voltage in this section of 220V~50V in voltage compared with
Gao Shi, triode 10-7 base terminal obtain high level signal and turn on and make the 2nd silicon-controlled 10-1 cut-offs, are formed mainly by high resistant
1st resistance 9 of value is powered for amplifying circuit 7, when supply voltage is in it is relatively low when, triode 10-7 base terminals obtain low level letter
Number and end and make the 2nd silicon-controlled 10-1 conducting, formed mainly by the 1st resistance 9 and the 2nd resistance 10-2 backward amplifying circuits in parallel
7 power supplies, i.e., be to be powered by the resistance circuit of high value for amplifying circuit 7, when supply voltage is relatively low when supply voltage is higher
When, it is to be powered by the resistance circuit compared with low resistance for amplifying circuit 7, this transfer process automatically controls, without artificial
Adjust or conversion, so that provide a kind of can obtain more preferable Electrical Safety guarantee under the supply voltage environment of wide scope.
(3), the low-power consumption leakage protecting plug of the utility model to cause in 220V alternating currents because there is provided power control circuit
Electrical power consumed is very low when voltage uses, thus interiors of products thermal exposure is few, temperature is low, solves existing leakage protecting plug because of electricity
Power consumption is big, thermal exposure is high, since leakage protecting plug small product size is small, internal structure is compact, space is small and closing is difficult to dissipate
Heat and cause its interior environment temperature it is excessive cause occur electric parts failure the problem of, so as to substantially increase electric elements
Life and reliability, thus it is more safe and reliable than existing leakage protecting plug.This leakage protecting plug also has energy saving, work
The advantages that reliability is high, long working life.
The low-power consumption leakage protecting plug of the utility model is mainly used in the earth leakage protective of various household electrical appliance, mainly
Make leakage protecting plug or the power cord with leakage protecting plug.
Brief description of the drawings
Fig. 1 is the electronic schematic diagram of the low-power consumption leakage protecting plug of the utility model one embodiment.
Embodiment
The utility model is further elaborated by example below.
Embodiment 1
Shown in Figure 1, a kind of low-power consumption leakage protecting plug, includes shell, phase pole copper latch 1, zero pole copper latch
2nd, zero sequence current mutual inductor 6, test loop 8 and electromagnetic trip and the lock that phase line 11, zero curve 12, phase line 11 are both passed through with zero curve 12
Buckle device, which includes electromagnetic coil 3 and its drive circuit with locker, phase line static contact 1-1 and phase line is moved
Contact 1-2, zero curve static contact 2-1 and zero curve moving contact 2-2, the drive circuit of the electromagnetic coil 3 mainly by rectification circuit 4,
1st silicon-controlled 5, amplifying circuit 7, the 1st resistance 9 form, and the secondary windings output terminal of the zero sequence current mutual inductor 6 and described put
The input terminal connection of big circuit 7, described 1st resistance, 9 one end are connected with the 4 output cathode end of rectification circuit, the 1st resistance
9 other ends are connected with the power end 7-2 of the amplifying circuit 7, are additionally provided with power control circuit 10, the power control circuit 10
With the 1st resistance 9 be connected in parallel the 4 output cathode end of rectification circuit and the amplifying circuit 7 power end 7-2 it
Between, the power control circuit 10 is equipped with the 2nd resistance 10-2, the 3rd resistance 10-3, the 4th resistance 10-4, the 5th resistance 10-5, the
6 resistance 10-6, triode 10-7, the 2nd silicon-controlled 10-1, after described 2nd resistance 10-2 one end, the 3rd resistance 10-3 one end are connected
It is connected with 9 one end of the 1st resistance, 4 output cathode end of rectification circuit, the 2nd resistance 10-2 other ends and the 2nd silicon-controlled 10-1 anode taps
Connection, the 3rd resistance 10-3 other ends are connected with the 4th resistance 10-4 one end, the 6th resistance 10-6 one end, and the 4th resistance 10-4 is another
End is connected with the 5th resistance 10-5 one end, triode 10-7 base terminals, the 6th resistance 10-6 other ends and triode 10-7 current collections
Extremely, the 2nd silicon-controlled 10-1 controls are extremely connected, the 5th resistance 10-5 other ends, triode 10-7
Emitter terminal, the 2nd silicon-controlled 10-1 cathode terminals, 9 other end of the 1st resistance are connected with the power end 7-2 of amplifying circuit 7
Connect.
During work, lead to from phase line 11 and output DC power supply after rectified 4 rectification of circuit of supply voltage that zero curve 12 inputs
Cross the 1st resistance 9 and provide working power for amplifying circuit 7, gone here and there successively by the 3rd resistance 10-3, the 4th resistance 10-4, the 5th resistance 10-5
Join the branch formed and provide sampling voltage signal and working power for triode 10-7.When leakage protecting plug is in normal alternating current
Supply voltage 220V in use, export DC power supply after rectified 4 rectification of circuit of the supply voltage of 220V, through the 3rd resistance 10-3,
After 4th resistance 10-4, the 5th resistance 10-5 partial pressure current limlitings, make triode because the base terminal of triode 10-7 obtains high level signal
10-7 is turned on, and triode 10-7 collectors are changed into low level, so that the 2nd silicon-controlled 10-1 controls are extremely locked in low level
State, the 2nd silicon-controlled 10-1 are in cut-off state, and mainly working power is provided by the 1st resistance 9 for amplifying circuit 7 so as to be formed,
Although supply voltage is all 220V, since the resistance value selection of the 1st resistance 9 is larger, so flowing into 7 power end 7- of amplifying circuit
2 electric current is small, and leakage protecting plug Overall Power Consumption is low and can work normally.When mains voltage breaks down, voltage is relatively low
When（Such as mains voltage is reduced to 50V）, DC power supply is exported after rectified 4 rectification of circuit of supply voltage of 50V, through
After 3 resistance 10-3, the 4th resistance 10-4, the 5th resistance 10-5 partial pressure current limlitings, because the base terminal of triode 10-7 obtains low level letter
End number triode 10-7, triode 10-7 collectors are changed into high level, so that the 2nd silicon-controlled 10-1 controls are extremely changed into
High level, the 2nd silicon-controlled 10-1 are changed into conducting state, are so transformed into mainly in parallel with the 1st resistance 9 by the 2nd resistance 10-2
Working power is provided for amplifying circuit 7 afterwards, although supply voltage is in state relatively low 50V, due to the 2nd resistance 10-2 and the
Resistance value after 1 resistance, 9 parallel connection becomes smaller, so can still meet the working power needed for amplifying circuit 7 and low in energy consumption, leakage
Electric protection plug can equally work normally, so as to preferably meet the earth leakage protective requirement of various different power supply environment, protect
The Electrical Safety of people is hindered.
In the utility model, it can be needed to have additional earthing pole copper latch and coupled ground wire according to user.
In use, pressing the reset button of leakage protecting plug, the phase line movable contact 1-2 and phase line of leakage protecting plug are quiet
1-1 closures in contact are connected, and zero curve movable contact 2-2 is also closed at connecting with zero curve stationary contact 2-1, and leakage protecting plug is lower end
Normal power supply, when leaking electricity, zero sequence current mutual inductor 6 detects electric leakage signal and electric leakage signal is sent to amplifying circuit
7, when electric leakage signal reaches predetermined threshold value, the silicon-controlled 5 conducting driving electromagnetic coil 3 of the triggering of amplifying circuit 7 the 1st is obtained electric and made
Leakage protecting plug trips.
Claims (1)
1. a kind of low-power consumption leakage protecting plug, includes shell, phase pole copper latch, zero pole copper latch, phase line, zero curve, phase line
Zero sequence current mutual inductor, test loop and the electromagnetic trip and locker both passed through with zero curve, the electromagnetic trip are filled with lock
Put and include electromagnetic coil and its drive circuit, phase line contact, zero curve contact, the drive circuit of the electromagnetic coil is mainly by rectification
Circuit, the 1st silicon-controlled, amplifying circuit, the 1st resistance composition, the secondary windings output terminal of the zero sequence current mutual inductor and described
The input terminal connection of amplifying circuit, described 1st resistance one end are connected with the rectification circuit output cathode end, the 1st resistance
The other end is connected with the power end of the amplifying circuit, it is characterised in that：It is additionally provided with power control circuit, the power consumption control electricity
Road and the 1st resistor coupled in parallel are connected between the rectification circuit output cathode end and the power end of the amplifying circuit, institute
Power control circuit is stated equipped with the 2nd resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 6th resistance, triode, the 2nd silicon-controlled；
The positive terminal that described 2nd resistance one end, the 3rd resistance one end are connected afterwards with the 1st resistance one end, rectification circuit output end is connected, and the 2nd
The resistance other end is connected with the 2nd silicon-controlled anode tap, and the 3rd resistance other end is connected with the 4th resistance one end, the 6th resistance one end,
The 4th resistance other end is connected with the 5th resistance one end, transistor base end, the 6th resistance other end and transistor collector end,
2nd SCR control is extremely connected, and the 5th resistance other end, triode emission are extreme, the 2nd silicon-controlled cathode terminal, the 1st resistance
The other end is connected with the power end of amplifying circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721243879.8U CN207338820U (en) | 2017-09-26 | 2017-09-26 | A kind of low-power consumption leakage protecting plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721243879.8U CN207338820U (en) | 2017-09-26 | 2017-09-26 | A kind of low-power consumption leakage protecting plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207338820U true CN207338820U (en) | 2018-05-08 |
Family
ID=62369951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721243879.8U Withdrawn - After Issue CN207338820U (en) | 2017-09-26 | 2017-09-26 | A kind of low-power consumption leakage protecting plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207338820U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107749544B (en) * | 2017-09-26 | 2023-06-13 | 佛山良辉电子有限公司 | Low-power consumption leakage protection plug |
-
2017
- 2017-09-26 CN CN201721243879.8U patent/CN207338820U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107749544B (en) * | 2017-09-26 | 2023-06-13 | 佛山良辉电子有限公司 | Low-power consumption leakage protection plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220429 Address after: 528300 floor 4, No. 9, industrial community, South District, west side of Tianhe North Road, Ronggui South District neighborhood committee, Shunde District, Foshan City, Guangdong Province Patentee after: Foshan Lianghui Electronics Co.,Ltd. Address before: 518126 room 705b, block B, Shenzhen Zhihui innovation center, Taoyuanju, Qianjin Second Road, Xixiang street, Bao'an District, Shenzhen, Guangdong Patentee before: SHENZHEN LONGWAY TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180508 Effective date of abandoning: 20230613 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180508 Effective date of abandoning: 20230613 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |