CN205787076U - A kind of simple virtual load of electric energy field-checking - Google Patents
A kind of simple virtual load of electric energy field-checking Download PDFInfo
- Publication number
- CN205787076U CN205787076U CN201620546772.XU CN201620546772U CN205787076U CN 205787076 U CN205787076 U CN 205787076U CN 201620546772 U CN201620546772 U CN 201620546772U CN 205787076 U CN205787076 U CN 205787076U
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- wire
- electric energy
- energy meter
- current transformer
- live wire
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Abstract
The utility model discloses the simple virtual load of a kind of electric energy field-checking, including electric energy meter, the live wire inlet interface of described electric energy meter is directly connected to live wire inlet wire by wire, the zero line inlet interface of described electric energy meter is directly connected to zero line inlet wire by wire, also include resistance summation current transformer, described one end of current transformer primary coil is connected with one end of resistance, when electric energy meter field detects, the other end of described current transformer primary coil is connected with zero line inlet wire by wire, the other end of described resistance is connected with live wire inlet wire, one end of described secondary transformer coil is connected with the live wire inlet interface of electric energy meter, the other end is connected with live wire outlet interface.This utility model by the current transformer of the resistance of metering function and up-flow effect with the use of, increase an easy virtual load, realize user's current power amount the least, the purpose that even user remains able to normally in the case of not having electricity consumption, detects accurately.
Description
[technical field]
This utility model relates to the technical field of electric energy meter certainty of measurement, particularly to the letter of a kind of electric energy field-checking
Easily virtual load.
[background technology]
Electric energy meter is used to measure the instrument of electric energy.When electric energy meter is accessed circuit-under-test, current coil and pressure-wire
Just having alternating current to flow through in circle, the two alternating current produces the magnetic flux of alternation respectively in their iron core；Alternating flux
Through aluminum dish, in aluminum dish, induce eddy current；Eddy current is acted on by power again in magnetic field, so that aluminum dish obtains actively moment
And rotate.The power of load consumption is the biggest, the biggest by the electric current of current coil, and the eddy current induced in aluminum dish is the biggest, makes
The moment that aluminum dish rotates is the biggest.I.e. actively the size of moment is directly proportional with the power of load consumption.Power is the biggest, and torque is also got over
Greatly, aluminum dish rotates the fastest.Aluminum dish rotate time, acting on of the braking moment produced by permanent magnet again, braking moment with
Actively moment is in opposite direction；The size of braking moment is directly proportional to the rotating speed of aluminum dish, and aluminum dish rotates the fastest, and braking moment is also got over
Greatly.When active moment reaches temporary equilibrium with braking moment, aluminum dish is by uniform rotation.The electric energy that load is consumed and aluminum dish
Revolution is directly proportional.When aluminum dish rotates, drive enumerator, the electric energy consumed is indicated, here it is the letter of electric energy meter work
Single process.
At present, the test of existing electric energy meter field is to utilize the actual user's load in current line to test electric energy meter
The current power consumption of accuracy, the load point therefore tested and user is the most relevant, especially the least when user's current power amount,
Can cause the accuracy of on-the-spot test due to the difference of test point load, even user is not in the case of having electricity consumption, just
Cannot be carried out testing of scene.For this situation, just can normally, exactly as long as increasing an easy virtual load
Test, therefore propose the simple virtual load of a kind of electric energy field-checking.
[utility model content]
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, it is provided that the letter of a kind of electric energy field-checking
Easily virtual load, it aims to solve the problem that the least accuracy easily causing electric energy meter field test of user power utilization amount in prior art,
User cannot be carried out the technical problem of on-the-spot test in the case of not having electricity consumption.
For achieving the above object, the utility model proposes the simple virtual load of a kind of electric energy field-checking, including electricity
Energy table, the live wire inlet interface of described electric energy meter is directly connected to live wire inlet wire by wire, the zero line inlet wire of described electric energy meter
Interface is directly connected to zero line inlet wire by wire, also includes resistance summation current transformer, described current transformer primary line
One end of circle is connected with one end of resistance by wire, when electric energy meter field detects, and described current transformer primary coil
The other end be connected with zero line inlet wire by wire, the other end of described resistance passes through wire and is connected with live wire inlet wire, described
One end of secondary transformer coil is connected with the live wire inlet interface of electric energy meter by wire, the other end pass through wire and
Live wire outlet interface connects.
As preferably, the number of primary turns of described current transformer is 250:1 with the ratio of secondary winding turns.
As preferably, the electric current in the primary coil of described current transformer is at about 20mA.
As preferably, the electric current in the secondary coil of described current transformer is at about 5A.
The beneficial effects of the utility model: compared with prior art, a kind of electric energy field-checking that this utility model provides
Simple virtual load, by being used in combination of the current transformer of the resistance of metering function and up-flow effect so that flow into electricity
The electric current of current transformer controls at about 20mA, and the electric current of about 20mA is risen to about 5A, at the scene during electric energy detection, and electricity
Current transformer accesses electric energy meter, makes the virtual load of one about 5A of electric energy meter superposition, as long as correctly detecting the whole load of electric energy meter
The most permissible, the actual load of user is exactly the virtual load that the whole load of electric energy meter deducts 5A again, particularly currently uses as user
Electricity is the least, and even user is not in the case of having electricity consumption, can normally, test exactly.
Feature of the present utility model and advantage will combine accompanying drawing by embodiment and be described in detail.
[accompanying drawing explanation]
Fig. 1 is the structural representation of the simple virtual load of this utility model embodiment a kind of electric energy field-checking.
In figure: 1-resistance, 2-current transformer, 3-zero line inlet wire, 4-electric energy meter, 41-live wire inlet interface, 42-live wire
Outlet interface, 43-zero line inlet interface, 44-zero line outlet interface, 5-live wire inlet wire.
[detailed description of the invention]
For making the purpose of this utility model, technical scheme and advantage of greater clarity, below by accompanying drawing and implement
Example, is further elaborated to this utility model.However, it should be understood that specific embodiment described herein only in order to
Explain this utility model, be not limited to scope of the present utility model.Additionally, in the following description, eliminate known knot
Structure and the description of technology, to avoid unnecessarily obscuring concept of the present utility model.
Refering to Fig. 1, this utility model embodiment provides the simple virtual load of a kind of electric energy field-checking, including electric energy meter
4, the live wire inlet interface 41 of described electric energy meter 4 is directly connected to live wire inlet wire 5 by wire, and the zero line of described electric energy meter 4 enters
Line interface 43 is directly connected to zero line inlet wire 3 by wire, also includes resistance 1 summation current transformer 2, described current transformer
One end of 2 primary coils is connected with one end of resistance 1 by wire, when electric energy meter field detects, and described current transformer 2
The other end of primary coil is connected with zero line inlet wire 3 by wire, and the other end of described resistance 1 is by wire and live wire inlet wire
5 connect, and one end of described current transformer 2 secondary coil is connected, separately with the live wire inlet interface 41 of electric energy meter 4 by wire
One end is connected with live wire outlet interface 42 by wire.
Further, the number of primary turns of described current transformer 2 is 250:1 with the ratio of secondary winding turns.Electricity
Hindering 1 metering function, current transformer 2 plays electric current up-flow effect.
Further, the electric current in the primary coil of described current transformer 2 is at about 20mA, and described electric current is mutual
Electric current in the secondary coil of sensor 2 is at about 5A.
In this utility model embodiment, the metering function of resistance 1 so that the electric current of inflow current transformer 2 controls
About 20mA, the electric current of about 20mA is flowed up to about 5A by current transformer 2, at the scene in test, accesses electric energy meter 4, makes
Obtain the virtual load of electric energy meter 4 one about 5A of superposition.
Utility model works process:
The live wire inlet interface 41 of electric energy meter 4, live wire outlet interface 42, zero line inlet interface 43, zero line outlet interface 44
Being connected with electrical network live wire inlet wire 5, electrical network zero line inlet wire 3, user's live wire, user's zero line respectively, this utility model one electric energy is existing
In the course of the work, the other end of resistance 1 is connected with live wire inlet wire 5 the simple virtual load of field verification by wire, and electric current is mutual
One end of sensor 2 secondary coil is connected with the live wire inlet interface 41 of electric energy meter 4 by wire, and the other end passes through wire and live wire
Outlet interface 42 connects, simple to operate, when detecting at the scene, as long as correctly the whole load of detection electric energy meter 4 is the most permissible
, the actual load of user is equal to the actually detected whole load of electric energy meter and deducts the virtual load of 5A, it is achieved user currently uses
Electricity is the least, and even user remains able in the case of not having electricity consumption normally, detects accurately.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all at this
Any amendment, equivalent or the improvement etc. made within the spirit of utility model and principle, should be included in this utility model
Protection domain within.
Claims (4)
1. a simple virtual load for electric energy field-checking, including electric energy meter (4), the live wire inlet wire of described electric energy meter (4) connects
Mouthful (41) are directly connected to live wire inlet wire (5) by wire, the zero line inlet interface (43) of described electric energy meter (4) by wire and
Zero line inlet wire (3) is directly connected to, it is characterised in that: also include resistance (1) summation current transformer (2), described current transformer
(2) one end of primary coil is connected with one end of resistance (1) by wire, and when electric energy meter field detects, described electric current is mutual
The other end of sensor (2) primary coil is connected with zero line inlet wire (3) by wire, and the other end of described resistance (1) is by leading
Line is connected with live wire inlet wire (5), and one end of described current transformer (2) secondary coil is by the fire of wire with electric energy meter (4)
Line inlet interface (41) connects, and the other end is connected with live wire outlet interface (42) by wire.
The simple virtual load of a kind of electric energy field-checking the most as claimed in claim 1, it is characterised in that: described electric current is mutual
The number of primary turns of sensor (2) is 250:1 with the ratio of secondary winding turns.
The simple virtual load of a kind of electric energy field-checking the most as claimed in claim 1, it is characterised in that: described electric current is mutual
Electric current in the primary coil of sensor (2) is at about 20mA.
The simple virtual load of a kind of electric energy field-checking the most as claimed in claim 2, it is characterised in that: described electric current is mutual
Electric current in the secondary coil of sensor (2) is at about 5A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620546772.XU CN205787076U (en) | 2016-06-06 | 2016-06-06 | A kind of simple virtual load of electric energy field-checking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620546772.XU CN205787076U (en) | 2016-06-06 | 2016-06-06 | A kind of simple virtual load of electric energy field-checking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205787076U true CN205787076U (en) | 2016-12-07 |
Family
ID=58135153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620546772.XU Expired - Fee Related CN205787076U (en) | 2016-06-06 | 2016-06-06 | A kind of simple virtual load of electric energy field-checking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205787076U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106066466A (en) * | 2016-06-30 | 2016-11-02 | 海盐新跃电器有限公司 | A kind of electric energy field-checking is with built-in virtual load device |
| CN112147563A (en) * | 2020-08-27 | 2020-12-29 | 国网山西省电力公司阳泉供电公司 | Fault electric meter tester |
| CN113466777A (en) * | 2021-06-06 | 2021-10-01 | 国网河北省电力有限公司辛集市供电分公司 | Intelligent electric energy meter error rapid determination device |
-
2016
- 2016-06-06 CN CN201620546772.XU patent/CN205787076U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106066466A (en) * | 2016-06-30 | 2016-11-02 | 海盐新跃电器有限公司 | A kind of electric energy field-checking is with built-in virtual load device |
| CN112147563A (en) * | 2020-08-27 | 2020-12-29 | 国网山西省电力公司阳泉供电公司 | Fault electric meter tester |
| CN113466777A (en) * | 2021-06-06 | 2021-10-01 | 国网河北省电力有限公司辛集市供电分公司 | Intelligent electric energy meter error rapid determination device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 |