CN217158045U - Electric energy meter relay with residual current signal detection and electric energy metering - Google Patents
Electric energy meter relay with residual current signal detection and electric energy metering Download PDFInfo
- Publication number
- CN217158045U CN217158045U CN202220184156.XU CN202220184156U CN217158045U CN 217158045 U CN217158045 U CN 217158045U CN 202220184156 U CN202220184156 U CN 202220184156U CN 217158045 U CN217158045 U CN 217158045U
- Authority
- CN
- China
- Prior art keywords
- electric energy
- line
- current
- residual current
- relay
- 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
Images
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The utility model relates to an electric energy meter relay with residual current signal detection and electric energy metering, which comprises a relay body, wherein one side of the relay body is provided with a residual current detection mutual inductor, and the other side of the relay body is provided with an electric energy metering current mutual inductor; an N zero line load current line and an L phase line load current line are simultaneously arranged in the residual current detection mutual inductor in a penetrating manner; two ends of the load current line of the N zero line respectively penetrate out of two sides of the residual current detection mutual inductor and are positioned on the same side of the relay body; one end of the L-phase line load current line is connected with the relay body, and the other end of the L-phase line load current line penetrates through the electric energy metering current transformer and is located on the other side of the relay body after penetrating out of the residual current detecting transformer on one side of the relay body. The utility model not only improves the leakage protection reliability of the electric energy meter, but also reduces the cost; meanwhile, the installation volume can be better reduced on the premise of reliable protection, so that the installation space is saved.
Description
Technical Field
The utility model belongs to the technical field of the electric energy metering device technique and specifically relates to a take residual current signal to detect and electric energy meter relay of electric energy measurement.
Background
The electric energy meter is a metering device capable of calculating accumulated electric energy and used for meter reading and settlement, and is also an electric device used for connecting and disconnecting a circuit. A relay is an electric control device that generates a predetermined step change in a controlled amount in an electric output circuit when a change in an input amount (excitation amount) meets a predetermined requirement. Are commonly used in automated control circuits. When the device is applied to an electric energy meter, the device plays the roles of automatic adjustment and safety protection.
However, the electric energy meter in the prior art has the following defects: the electric energy meter is internally provided with no electric leakage detection protection function, and an electric leakage protection device needs to be additionally arranged, so that the reliability is poor, and the cost is high.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the utility model provides a take residual current signal to detect and electric energy meter relay of electric energy measurement, have small in size, detect characteristics such as accurate.
The utility model provides a technical scheme that its technical problem adopted is: the electric energy meter relay with the residual current signal detection and the electric energy metering comprises a relay body, wherein a residual current detection mutual inductor is arranged on one side of the relay body, and an electric energy metering current mutual inductor is arranged on the other side of the relay body; an N zero line load current line and an L phase line load current line are simultaneously arranged in the residual current detection mutual inductor in a penetrating manner; two ends of the load current line of the N zero line respectively penetrate out of two sides of the residual current detection mutual inductor and are positioned on the same side of the relay body; one end of the L-phase line load current line is connected with the relay body, and the other end of the L-phase line load current line penetrates through the electric energy metering current transformer after penetrating out of the residual current detecting transformer on one side of the relay body and is located on the other side of the relay body.
Further say, the both ends of N zero line load current line be connected with N zero line electric current incoming line terminal and N zero line electric current outgoing line terminal respectively.
Further say, L phase line load current line's one end be connected with L phase line electric current incoming terminal, this body coupling L phase line electric current outgoing terminal of relay.
Further say, L phase line electric current incoming line terminal and L phase line electric current outgoing line terminal between span and be provided with the voltage sampling live wire.
Further say, N zero line electric current incoming line terminal and N zero line electric current outgoing line terminal between span and be provided with voltage sampling zero line.
Further say, residual current detection mutual-inductor on be provided with the positive lead wire of residual current signal and residual current signal burden lead wire.
Further, electric energy measurement current transformer on be provided with current signal positive lead wire and current signal negative lead wire.
Further say, N zero line load current line and L phase line load current line be the flexible line.
The utility model has the advantages that the defects existing in the background technology are solved, the live wire current wire and the zero wire current wire are commonly penetrated in a leakage current detection mutual inductor, the leakage current in the monitoring circuit can be implemented when the power consumption metering task is completed, the leakage protection reliability of the electric energy meter is improved, and the manufacturing cost is reduced; meanwhile, mutual inductors are arranged on two sides of the relay, so that the installation volume can be reduced better on the premise of reliable protection, and the installation space is saved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
in the figure: 1. a relay body; 2. a residual current detection transformer; 3. an electric energy metering current transformer; 4. a load current line of the N zero line; 5. an L-phase line load current line; 6. an N zero line current incoming terminal; 7. a zero line current outlet terminal N; 8. an L-phase line current incoming terminal; 9. an L-phase line current outlet terminal; 10. a voltage sampling live wire; 11. voltage sampling zero line; 12. a residual current signal positive lead; 13. a residual current signal negative lead; 14. a current signal positive lead; 15. and a current signal negative lead.
Detailed Description
The invention will now be described in further detail with reference to the drawings and preferred embodiments. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
The electric energy meter relay with the residual current signal detection and the electric energy metering function as shown in fig. 1 comprises a relay body 1, wherein a residual current detection mutual inductor 2 is arranged on one side of the relay body 1, and an electric energy metering current mutual inductor 3 is arranged on the other side of the relay body; an N zero line load current line 4 and an L phase line load current line 5 are simultaneously arranged in the residual current detection mutual inductor 2 in a penetrating manner; two ends of the N zero line load current wire 4 respectively penetrate out of two sides of the residual current detection mutual inductor 2 and are positioned on the same side of the relay body 1; one end of the L-phase line load current line 5 is connected with the relay body 1, and the other end of the L-phase line load current line passes through the electric energy metering current transformer 3 and is located on the other side of the relay body 1 after penetrating out of the residual current detection transformer 2 on one side of the relay body 1. The N zero line load current line 4 and the L phase line load current line 5 are both flexible lines. The flexible wire is used for wiring conveniently, and the current wire can be arranged in any form according to the requirement.
Two ends of the N zero line load current line 4 are respectively connected with an N zero line current incoming terminal 6 and an N zero line current outgoing terminal 7. One end of the L-phase line load current line 5 is connected with an L-phase line current incoming terminal 8, and the relay body is connected with an L-phase line current outgoing terminal 9. The N zero line current incoming terminal, the N zero line current outgoing terminal, the L phase line current incoming terminal and the L phase line current outgoing terminal are all provided with notches, one side with the notches is subjected to spot welding with a sintering head, and one side without the notches is subjected to spot welding with a static sheet.
A voltage sampling live wire 10 is arranged between the L-phase line current incoming terminal and the L-phase line current outgoing terminal in a crossing manner. And a voltage sampling zero line 11 is arranged between the N zero line current incoming terminal and the N zero line current outgoing terminal in a crossing manner.
And a residual current signal positive lead 12 and a residual current signal negative lead 13 are arranged on the residual current detection mutual inductor. The electric energy metering current transformer is provided with a current signal positive lead 14 and a current signal negative lead 15.
The implementation principle of the scheme is as follows: the L line and the N line of the power supply are commonly penetrated in a mutual inductor, and the currents of the L line and the N line are mutually offset; if the L line and the N line are detected to have different currents, namely if the L line and the N line are in electric leakage, the current is generated, and the electric leakage can be judged if residual current is generated; and the leakage current is calibrated to be very accurate and can be accurate to 1 mA.
While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (8)
1. The utility model provides a take residual current signal to detect and electric energy meter relay of electric energy measurement which characterized in that: the relay comprises a relay body, wherein one side of the relay body is provided with a residual current detection mutual inductor, and the other side of the relay body is provided with an electric energy metering current mutual inductor; an N zero line load current line and an L phase line load current line are simultaneously arranged in the residual current detection mutual inductor in a penetrating manner; two ends of the load current line of the N zero line respectively penetrate out of two sides of the residual current detection mutual inductor and are positioned on the same side of the relay body; one end of the L-phase line load current line is connected with the relay body, and the other end of the L-phase line load current line penetrates through the electric energy metering current transformer after penetrating out of the residual current detecting transformer on one side of the relay body and is located on the other side of the relay body.
2. The electric energy meter relay with residual current signal detection and electric energy metering of claim 1, characterized in that: and two ends of the N zero line load current line are respectively connected with an N zero line current incoming terminal and an N zero line current outgoing terminal.
3. The electric energy meter relay with residual current signal detection and electric energy metering of claim 1, characterized in that: one end of the L-phase line load current line is connected with an L-phase line current incoming terminal, and the relay body is connected with an L-phase line current outgoing terminal.
4. The electric energy meter relay with residual current signal detection and electric energy metering of claim 3, characterized in that: and a voltage sampling live wire is arranged between the L-phase line current incoming terminal and the L-phase line current outgoing terminal in a crossing manner.
5. The electric energy meter relay with residual current signal detection and electric energy metering of claim 2, characterized in that: and a voltage sampling zero line is arranged between the N zero line current inlet terminal and the N zero line current outlet terminal in a crossing manner.
6. The electric energy meter relay with residual current signal detection and electric energy metering of claim 1, characterized in that: and a residual current signal positive lead and a residual current signal negative lead are arranged on the residual current detection mutual inductor.
7. The electric energy meter relay with residual current signal detection and electric energy metering of claim 1, characterized in that: the electric energy metering current transformer is provided with a current signal positive lead and a current signal negative lead.
8. The electric energy meter relay with residual current signal detection and electric energy metering of claim 1, characterized in that: and the N zero line load current line and the L phase line load current line are both flexible lines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220184156.XU CN217158045U (en) | 2022-01-21 | 2022-01-21 | Electric energy meter relay with residual current signal detection and electric energy metering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220184156.XU CN217158045U (en) | 2022-01-21 | 2022-01-21 | Electric energy meter relay with residual current signal detection and electric energy metering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217158045U true CN217158045U (en) | 2022-08-09 |
Family
ID=82688420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220184156.XU Active CN217158045U (en) | 2022-01-21 | 2022-01-21 | Electric energy meter relay with residual current signal detection and electric energy metering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217158045U (en) |
-
2022
- 2022-01-21 CN CN202220184156.XU patent/CN217158045U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202256455U (en) | Magnetic balanced type Hall current sensor | |
| CN107271744B (en) | Lead structure of manganin shunt, PCB and wiring structure of PCB | |
| CN101216515B (en) | Powerline pole tower ground resistance measurement method and its tester | |
| CN102680851B (en) | Current leakage detecting method and current leakage detecting device | |
| CN201332015Y (en) | Electron type current transformer | |
| CN204064495U (en) | A kind of temperature of oil in transformer pick-up unit | |
| CN102323461A (en) | Unit multi-user intelligent electric energy meter box | |
| CN106093799A (en) | The accurate measuring systems of a kind of distribution terminal battery performance and method | |
| CN105223536A (en) | A kind of portable electric meter field calibration system | |
| CN107345977B (en) | Lead structure of manganin shunt, PCB and wiring structure of PCB | |
| CN103293507A (en) | Online detection method of error of current transformer | |
| CN202486254U (en) | Secondary circuit detection system of current mutual inductor | |
| CN202870138U (en) | Manganin shunt and electronic Watt-hour meter | |
| CN111198297A (en) | Signal acquisition device based on Rogowski coil and zero-flux current sensor | |
| CN217158045U (en) | Electric energy meter relay with residual current signal detection and electric energy metering | |
| CN102621369B (en) | Inductance ESR (equivalent series resistance) based electric current detection circuit with potential floating function | |
| CN201569527U (en) | Monitoring device of resistance of switch machine | |
| CN103399258A (en) | Traveling wave fault location front-end analog acquisition board based on high-precision Hall effect | |
| CN202815065U (en) | Induction heater earth current on-line detecting device | |
| CN101650379A (en) | Combined type sensor | |
| CN105445526B (en) | The measurement structure of single cable insulation leakage current under a kind of service condition | |
| CN205301570U (en) | On --spot check gauge of intelligent electric energy meter | |
| CN202631606U (en) | Current detection apparatus | |
| CN202815087U (en) | Electronic electric energy meter capable of reducing alternating electromagnetic interference | |
| CN217158050U (en) | Electric energy meter relay with leakage current and load current signal detection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |