CN205941875U - On --spot check -up of electric energy is with external emptiness device of loading - Google Patents
On --spot check -up of electric energy is with external emptiness device of loading Download PDFInfo
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- CN205941875U CN205941875U CN201620712447.6U CN201620712447U CN205941875U CN 205941875 U CN205941875 U CN 205941875U CN 201620712447 U CN201620712447 U CN 201620712447U CN 205941875 U CN205941875 U CN 205941875U
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- wire
- electric energy
- live wire
- current transformer
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- 230000005611 electricity Effects 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 13
- 239000004411 aluminium Substances 0.000 description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 12
- 229910052782 aluminium Inorganic materials 0.000 description 12
- 230000000694 effects Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model discloses an on - -spot check -up of electric energy is with external emptiness device of loading, including shell body, resistance, current transformer and control switch, resistance, current transformer and control switch all install in the shell body, be provided with live wire incoming line ports, live wire be qualified for the next round of competitions port and zero line wiring port on the shell body, control switch's one end pass through the wire and be connected with the one end of resistance, the other end passes through the wire to be connected with live wire incoming line ports, the other end of resistance pass through the wire and be connected with current transformer's primary's one end, current transformer's primary's the other end pass through the wire and be connected with zero line wiring port, current transformer's secondary coil's one end pass through the wire and be connected with live wire incoming line ports, the other end is qualified for the next round of competitions the port through wire and live wire and is connected. The utility model discloses simple structure, with low costs and the security is high, very little at the power consumption, or even the user can normally accurately test not having under the circumstances of power consumption.
Description
【Technical field】
This utility model is related to the technical field of electric energy meter certainty of measurement, particularly to a kind of electric energy field-checking with external
Formula virtual load device.
【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
Alternating current is just had to flow through in circle, this two alternating currents produce the magnetic flux of alternation respectively in their iron core；Alternating flux
Through aluminium dish, aluminium dish induces vortex；Vortex is acted on by power, so that aluminium dish obtains active moment in magnetic field again
And rotate.The power of load consumption is bigger, bigger by the electric current of current coil, and the vortex inducing in aluminium dish is also bigger, makes
The moment that aluminium dish rotates is bigger.I.e. the size of active moment is directly proportional with the power of load consumption.Power is bigger, and torque is also got over
Greatly, aluminium dish rotation is also faster.When aluminium dish rotates, the acting on of the braking moment again being produced by permanent magnet, braking moment and
Active moment is in opposite direction；The size of braking moment is directly proportional to the rotating speed of aluminium dish, and aluminium dish rotates faster, and braking moment is also got over
Greatly.When active moment and braking moment reach temporary equilibrium, aluminium dish is by uniform rotation.Load consumed electric energy and aluminium dish
Revolution is directly proportional.When aluminium dish rotates, drive enumerator, the electric energy being consumed is indicated, here it is the letter of electric energy meter work
Single process.
At present, existing electric energy meter field test is to test electric energy meter using the actual user's load in current line
The load point of accuracy, therefore test and the current power consumption of user are directly relevant, especially when user's current power amount very little,
The accuracy of on-the-spot test can be caused due to testing the difference of point load, or 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 a kind of electric energy field-checking external virtual load device.
【Utility model content】
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of electric energy field-checking with external
Formula virtual load device, it aims to solve the problem that in prior art, user power utilization amount very little easily causes the accuracy fall that electric energy meter field is tested
Low, 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 a kind of electric energy field-checking external virtual load device, wrap
Include shell body, resistance, current transformer and controlling switch, described resistance, current transformer and controlling switch are installed in outer
In housing, described shell body is provided with live wire inlet wire port, live wire outlet port and zero line Wiring port, described control
One end of switch is connected with one end of resistance by wire, and the other end is connected with live wire inlet wire port by wire, described electricity
The other end of resistance is connected with one end of the primary coil of current transformer by wire, the primary coil of described current transformer
The other end be connected with zero line Wiring port by wire, one end of the described secondary coil of current transformer pass through wire with
Live wire inlet wire port connects, and the other end is connected with live wire outlet port by wire.
Preferably, being additionally provided with control knob on described shell body, described control knob is braked with controlling switch
Connect.
Preferably, described shell body is on the side of live wire inlet wire port, live wire outlet port and zero line Wiring port
It is printed with mark " #L1 ", " #L2 " and " #N1 " respectively.
Preferably, the number of primary turns of described current transformer is 250 with the ratio of secondary winding turns：1.
Preferably, described current transformer is in galvanization, the electric current in primary coil is in 20mA.
Preferably, described current transformer is in galvanization, the electric current in secondary coil is in 5A.
Preferably, described shell body is in use, live wire inlet wire port and electrical network live wire or electric energy meter
Live wire end of incoming cables connects, and live wire outlet port is connected with the live wire leading-out terminal of electric energy meter, zero line Wiring port and the zero of electric energy meter
Line end of incoming cables connects.
The beneficial effects of the utility model：Compared with prior art, a kind of electric energy field-checking that this utility model provides
With external virtual load device, by being used in combination so that flowing of the current transformer of the resistance of metering function and up-flow effect
Enter the current control of current transformer in 20mA, and by 20mA about electric current rise to 5A, electric energy detection at the scene
When it is only necessary to will three ports on shell body respectively corresponding with the port on electric energy meter connect after, press after control knob i.e.
Can be tested, make electric energy meter be superimposed the virtual load of an about 5A, as long as correctly the whole load of detection electric energy meter is just permissible, be used
The actual load at family is exactly that the whole load of electric energy meter deducts the virtual load of 5A again, particularly when user's current power amount very little,
Even user, can normally, test exactly in the case of not having electricity consumption.
Feature of the present utility model and advantage will combine accompanying drawing by embodiment and be described in detail.
【Brief description】
Fig. 1 is a kind of structural representation of this utility model embodiment electric energy field-checking external virtual load device；
Fig. 2 is that a kind of internal structure of this utility model embodiment electric energy field-checking external virtual load device is illustrated
Figure.
In figure：1- shell body, 11- control knob, 2- resistance, 3- current transformer, 4- controlling switch, 5- live wire end of incoming cables
Mouth, 6- live wire outlet port, 7- zero line Wiring port.
【Specific embodiment】
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 to known knot
Structure and the description of technology, to avoid unnecessarily obscuring concept of the present utility model.
Refering to Fig. 1 and Fig. 2, this utility model embodiment provides a kind of electric energy field-checking external virtual load device,
Including shell body 1, resistance 2, current transformer 3 and controlling switch 4, described resistance 2, current transformer 3 and controlling switch 4
It is installed in shell body 1, described shell body 1 is provided with live wire inlet wire port 5, live wire outlet port 6 and zero line wiring
Port 7, one end of described controlling switch 4 is connected with one end of resistance 2 by wire, and the other end passes through wire and live wire inlet wire
Port 5 connects, and the other end of described resistance 2 is connected with one end of the primary coil of current transformer 3 by wire, described
The other end of the primary coil of current transformer 3 is connected with zero line Wiring port 7 by wire, described current transformer 3
One end of secondary coil is connected with live wire inlet wire port 5 by wire, and the other end is connected with live wire outlet port 6 by wire.
Wherein, described shell body 1 is additionally provided with control knob 11, described control knob 11 is made with controlling switch 4
It is dynamically connected.The on or off of controlling switch 4 just can be realized by control knob 11, thus realize within shell body 1 electricity
Road forms open circuit or path, easy to operate.
Further, described shell body 1 is in live wire inlet wire port 5, live wire outlet port 6 and zero line Wiring port 7
Mark " #L1 ", " #L2 " and " #N1 " is printed with respectively on side.Mark " #L1 ", " #L2 " and " #N1 ", in order to suggesting effect, prevents
The phenomenon of wrong occurs.
Further, the described number of primary turns of current transformer 3 is 250 with the ratio of secondary winding turns：1.
Further, described current transformer 3 in galvanization, electric current in primary coil in 20mA, institute
, in galvanization, electric current in secondary coil is in 5A for the current transformer 3 stated.
Further, described shell body 1 in use, live wire inlet wire port 5 and electrical network live wire or electric energy
The live wire end of incoming cables of table connects, and live wire outlet port 6 is connected with the live wire leading-out terminal of electric energy meter, zero line Wiring port 7 and electric energy
The zero line end of incoming cables of table connects.
In this utility model embodiment, 2 metering functions of resistance, current transformer 3 plays the effect of electric current up-flow so that flowing
Enter the current control of current transformer 2 in 20mA, current transformer 2 by 20mA about electric current flow up to 5A,
In on-the-spot test, after accessing electric energy meter, electric energy meter 4 can be made to be superimposed the virtual load of an about 5A.
Utility model works process：
A kind of this utility model electric energy field-checking with during external virtual load device busy, by shell body 1
Live wire inlet wire port 5 be connected with the live wire end of incoming cables of electrical network live wire or electric energy meter, the fire of live wire outlet port 6 and electric energy meter
Line leading-out terminal connects, it is ensured that after connecting correctly, pressing control after zero line Wiring port 7 is connected with the zero line end of incoming cables of electric energy meter
Button 11, simple to operate, and safety is higher, by the resistance 2 of metering function and the current transformer 3 of up-flow effect
Be used in combination so that the current control of inflow current transformer 3 is in 20mA, and by 20mA about electric current to rise to 5A left
The right side, makes electric energy meter be superimposed the virtual load of an about 5A, as long as the correctly whole load of detection electric energy meter just permissible, the reality of user
Load is exactly that the whole load of electric energy meter deducts the virtual load of 5A again, particularly when user's current power amount very little, or even user
In the case of there is no electricity consumption, can normally, test exactly.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all this
Any modification, equivalent or improvement made within the spirit of utility model and principle etc., should be included in this utility model
Protection domain within.
Claims (7)
1. a kind of electric energy field-checking with external virtual load device it is characterised in that：Including shell body (1), resistance (2), electricity
Current transformer (3) and controlling switch (4), described resistance (2), current transformer (3) and controlling switch (4) are installed in shell
In body (1), described shell body (1) is provided with live wire inlet wire port (5), live wire outlet port (6) and zero line Wiring port
(7), one end of described controlling switch (4) is connected with one end of resistance (2) by wire, and the other end is entered with live wire by wire
Line end mouth (5) connects, and the other end of described resistance (2) is passed through wire and connected with one end of the primary coil of current transformer (3)
Connect, the other end of the described primary coil of current transformer (3) is connected with zero line Wiring port (7) by wire, described
One end of the secondary coil of current transformer (3) is connected with live wire inlet wire port (5) by wire, and the other end passes through wire and fire
Line outlet port (6) connects.
2. as claimed in claim 1 a kind of electric energy field-checking with external virtual load device it is characterised in that：Described is outer
Control knob (11) is additionally provided with housing (1), described control knob (11) is connected with controlling switch (4) braking.
3. as claimed in claim 1 a kind of electric energy field-checking with external virtual load device it is characterised in that：Described is outer
Housing (1) is printed with mark on the side of live wire inlet wire port (5), live wire outlet port (6) and zero line Wiring port (7) respectively
" #L1 ", " #L2 " and " #N1 ".
4. as claimed in claim 1 a kind of electric energy field-checking with external virtual load device it is characterised in that：Described electricity
The number of primary turns of current transformer (3) and the ratio of secondary winding turns are 250：1.
5. as claimed in claim 1 a kind of electric energy field-checking with external virtual load device it is characterised in that：Described electricity
, in galvanization, electric current in primary coil is in 20mA for current transformer (3).
6. as claimed in claim 1 a kind of electric energy field-checking with external virtual load device it is characterised in that：Described electricity
, in galvanization, electric current in secondary coil is in 5A for current transformer (3).
7. as claimed in claim 1 a kind of electric energy field-checking with external virtual load device it is characterised in that：Described is outer
In use, live wire inlet wire port (5) is connected housing (1) with the live wire end of incoming cables of electrical network live wire or electric energy meter, live wire
Outlet port (6) is connected with the live wire leading-out terminal of electric energy meter, and zero line Wiring port (7) is connected with the zero line end of incoming cables of electric energy meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620712447.6U CN205941875U (en) | 2016-06-30 | 2016-06-30 | On --spot check -up of electric energy is with external emptiness device of loading |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620712447.6U CN205941875U (en) | 2016-06-30 | 2016-06-30 | On --spot check -up of electric energy is with external emptiness device of loading |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205941875U true CN205941875U (en) | 2017-02-08 |
Family
ID=57928639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620712447.6U Expired - Fee Related CN205941875U (en) | 2016-06-30 | 2016-06-30 | On --spot check -up of electric energy is with external emptiness device of loading |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205941875U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105911514A (en) * | 2016-06-30 | 2016-08-31 | 海盐新跃电器有限公司 | External virtual load device for on-site electric energy calibration |
-
2016
- 2016-06-30 CN CN201620712447.6U patent/CN205941875U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105911514A (en) * | 2016-06-30 | 2016-08-31 | 海盐新跃电器有限公司 | External virtual load device for on-site electric energy calibration |
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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: 20170208 |