CN207542771U - Electric power leakage circuit breakers - Google Patents
Electric power leakage circuit breakers Download PDFInfo
- Publication number
- CN207542771U CN207542771U CN201721805232.XU CN201721805232U CN207542771U CN 207542771 U CN207542771 U CN 207542771U CN 201721805232 U CN201721805232 U CN 201721805232U CN 207542771 U CN207542771 U CN 207542771U
- Authority
- CN
- China
- Prior art keywords
- diode
- capacitance
- resistor
- cathode
- inductance
- 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.)
- Expired - Fee Related
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model discloses a kind of electric power leakage circuit breakers, including first resistor to 3rd resistor, the first capacitance, the second capacitance, the first diode to the 4th diode, switch, inductance, relay, potentiometer, rectifier and silicon-controlled, compared with prior art, the utility model is by the current situation of inductive load electrical appliance, and when there is drain conditions generation, automatic disconnection loads the power supply of electrical appliance, prevent failure from deteriorating, safety coefficient is improved, high sensitivity has the value of popularization and application.
Description
Technical field
The utility model is related to a kind of XX more particularly to a kind of electric power leakage circuit breakers.
Background technology
Utility model content
The purpose of this utility model is that solve the above-mentioned problems and provides a kind of electric power leakage circuit breakers.
The utility model is achieved through the following technical solutions above-mentioned purpose：
The utility model includes first resistor to 3rd resistor, the first capacitance, the second capacitance, the first diode to the four or two
Pole pipe, switch, inductance, relay, potentiometer, rectifier and silicon-controlled, the first end of switch simultaneously with one end of AC power,
The first end of potentiometer is connected with the first input end of rectifier, and the second end of switch and the first end of first resistor connect, the
The second end of one resistance is connect simultaneously with the other end of AC power and the first end of relay, the normally closed switch series connection of relay
In on one end of AC power, the second end of relay connects simultaneously with the second input terminal of the second end of potentiometer and rectifier
Connect, the sensing connection of the both ends of inductance coil and AC power cord, the cathode output end of rectifier simultaneously with the first end of inductance, can
Control the cathode of silicon, the first end of the first capacitance, the anode of the second diode, the cathode of the 4th diode, the second capacitance first
End is connected with the first end of 3rd resistor, and the cathode output end of rectifier is connect with silicon-controlled anode, silicon-controlled control terminal
Connect simultaneously with the first end of the second end of the first capacitance, the cathode of the first diode, the anode of third diode and second resistance
It connects, the anode of the first diode is connect with the cathode of the second diode, the anode of the cathode of third diode and the 4th diode
Connection, the second end of second resistance connect simultaneously with the second end of the second end of the second capacitance, the second end of 3rd resistor and inductance
It connects.
The beneficial effects of the utility model are：
The utility model is a kind of electric power leakage circuit breakers, and compared with prior art, the utility model passes through inductive load
The current situation of electrical appliance, when there is drain conditions generation, the automatic power supply for disconnecting load electrical appliance prevents failure from deteriorating, carries
High safety factor, high sensitivity have the value of popularization and application.
Description of the drawings
Fig. 1 is the circuit structure schematic diagram of the utility model.
Specific embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1：The utility model include first resistor R1 to 3rd resistor R3, the first capacitance C1, the second capacitance C2,
First diode D1 to the 4th diode D4, switch S, inductance L, relay K, potentiometer RP, rectifier DR and controllable silicon SCR,
The first end for switching S connects simultaneously with the first input end of one end of AC power AC, the first end of potentiometer RP and rectifier DR
It connects, the second end for switching S is connect with the first end of first resistor R1, and the second end of first resistor R1 is simultaneously with AC power AC's
The other end is connected with the first end of relay K, and the normally closed switch K1 of relay K is series on one end of AC power AC, relay
The second end of device K is connect simultaneously with the second end of potentiometer RP and the second input terminal of rectifier DR, inductance L and AC power cord
Both ends sensing connection, the cathode output end of rectifier DR simultaneously with the first end of inductance L, the cathode of controllable silicon SCR, the first electricity
Hold the first end of C1, the anode of the second diode D2, the cathode of the 4th diode D4, the first end of the second capacitance C2 and third electricity
The first end connection of R3 is hindered, the cathode output end of rectifier DR and the anode of controllable silicon SCR connect, the control terminal of controllable silicon SCR
Simultaneously with the second end of the first capacitance C1, the cathode of the first diode D1, the anode of third diode D3 and second resistance R2
First end connects, and the anode of the first diode D1 connect with the cathode of the second diode D2, the cathode of third diode D3 and the
The anode connection of four diode D4, the second end of second resistance R2 simultaneously with the second end of the second capacitance C2,3rd resistor R3
Second end is connected with the second end of inductance L.
The operation principle of the utility model is as follows：
When no leakage current, the primary current vector sum of inductance L is zero, the non-inductive electric current outputs of inductance L, silicon-controlled
SCR is not turned on, and relay K is failure to actuate, and normally powers to the load.When there is leakage current to occur, inductance L primary currents vector sum is not
It is zero again, induced electromotive force is generated in inductance L coils, which forms trigger voltage through pulsed triggering circuit, and making can
Control silicon SCR conductings.Positive and negative anodes of the alternating current 220V supply voltage through relay K, rectifier DR, controllable silicon SCR form circuit, relay
Device K obtains electric actuation, drives normally closed switch K1 actions, cuts off the power, and so as to play the protective effect for preventing the person from getting an electric shock, reduces
The chance of equipment damage.
First resistor R1 is pressure domain resistance, is acted on more than voltage protection；Switch S is test button, it and resistance first are electric
R1 compositions test loop is hindered, two ends of test loop are connected on inductance L input terminals and the out of phase conducting wire of output terminal, to press
When switching S, the earth-fault current of a simulation is flowed through in inductance L, checks whether earth leakage protective device is normal.
The basic principle of the utility model and main feature and the advantages of the utility model has been shown and described above.One's own profession
The technical staff of industry is it should be appreciated that the present utility model is not limited to the above embodiments, described in above embodiments and description
Only illustrate the principle of the utility model, on the premise of not departing from the spirit and scope of the utility model, the utility model is also
Various changes and modifications are had, these various changes and improvements fall within the scope of the claimed invention.The utility model
Claimed range is defined by the appending claims and its equivalent thereof.
Claims (1)
1. a kind of electric power leakage circuit breakers, it is characterised in that：Including first resistor to 3rd resistor, the first capacitance, the second capacitance,
First diode to the 4th diode, switch, inductance, relay, potentiometer, rectifier and silicon-controlled, the first end of switch is same
When and one end of AC power, the first end of potentiometer and rectifier first input end connect, the second end of switch and first
The first end connection of resistance, the second end of first resistor are connect simultaneously with the other end of AC power and the first end of relay,
The normally closed switch of relay is series on one end of AC power, the second end of relay simultaneously with the second end of potentiometer and whole
Flow the second input terminal connection of device, the both ends sensing of inductance and AC power cord connects, the cathode output end of rectifier simultaneously with
The first end of inductance, silicon-controlled cathode, the first end of the first capacitance, the anode of the second diode, the 4th diode cathode,
The first end of second capacitance is connected with the first end of 3rd resistor, and the cathode output end of rectifier is connect with silicon-controlled anode,
Silicon-controlled control terminal simultaneously with the second end of the first capacitance, the cathode of the first diode, third diode anode and second
The first end connection of resistance, the anode of the first diode connect with the cathode of the second diode, the cathode of third diode and the
The anode connection of four diodes, the second end of second resistance simultaneously with the second end of the second capacitance, the second end of 3rd resistor and
The second end connection of inductance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721805232.XU CN207542771U (en) | 2017-12-21 | 2017-12-21 | Electric power leakage circuit breakers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721805232.XU CN207542771U (en) | 2017-12-21 | 2017-12-21 | Electric power leakage circuit breakers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207542771U true CN207542771U (en) | 2018-06-26 |
Family
ID=62619049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721805232.XU Expired - Fee Related CN207542771U (en) | 2017-12-21 | 2017-12-21 | Electric power leakage circuit breakers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207542771U (en) |
-
2017
- 2017-12-21 CN CN201721805232.XU patent/CN207542771U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203722205U (en) | Overvoltage and electric leakage protection circuit | |
| CN201656760U (en) | Surge-prevention soft starting circuit | |
| CN102623947A (en) | Leakage protector with phase line switching function | |
| CN204967236U (en) | Leakage protector | |
| CN104377647A (en) | Electric leakage protection circuit | |
| CN202817702U (en) | Current leakage protection device | |
| CN202210598U (en) | Dual anti-creeping socket | |
| CN106684820A (en) | Open circuit automatic protection device for secondary circuit of high voltage current transformer | |
| CN207542771U (en) | Electric power leakage circuit breakers | |
| CN202503263U (en) | Leakage protector having phase line switching function | |
| CN205195233U (en) | Power leakage protector | |
| CN106026017B (en) | A kind of leakage circuit breakers with overvoltage protection and low-voltage protection | |
| CN204205560U (en) | leakage protection circuit | |
| CN104917154A (en) | Electric leakage protection device for direct-current power supply of streetcar | |
| CN204992530U (en) | Three -phase leakage protection circuit | |
| CN204205559U (en) | A kind of leakage protection circuit | |
| CN201252392Y (en) | Earth-leakage protector | |
| CN210669509U (en) | Leakage protection device | |
| CN203707756U (en) | Electric leakage protection device for direct-current power supply of streetcar | |
| CN202503262U (en) | Electric leakage protection device | |
| CN201985508U (en) | Zero line break protector and connecting structure thereof | |
| CN206412749U (en) | The control circuit of the earth leakage protective device of the double protections of ground wire | |
| CN206575138U (en) | A kind of Three phase four-wire system, which is powered, uses earth leakage protective device | |
| CN207765941U (en) | A kind of earth leakage protective device | |
| CN209896685U (en) | Open central line leakage protection circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180626 Termination date: 20191221 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |