CN106066466A - A kind of electric energy field-checking is with built-in virtual load device - Google Patents
A kind of electric energy field-checking is with built-in virtual load device Download PDFInfo
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- CN106066466A CN106066466A CN201610531832.5A CN201610531832A CN106066466A CN 106066466 A CN106066466 A CN 106066466A CN 201610531832 A CN201610531832 A CN 201610531832A CN 106066466 A CN106066466 A CN 106066466A
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- electric energy
- built
- checking
- virtual load
- load device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The invention discloses a kind of built-in virtual load device of electric energy field-checking, including lower house, upper shell, fixation kit, resistance, current transformer and control switch, the periphery, bottom of described lower house is provided with flange, some fixing holes are offered on described flange, described upper shell and the removable snapping of lower house, described resistance, current transformer and control switch are all fixedly installed in lower house, it is provided with control knob on described upper shell, described control knob is connected with controlling switch braking, described lower house by realizing be connected fixing with electric energy meter with the fixation kit of fixing hole equivalent.One electric energy field-checking of the present invention is with built-in virtual load device, simple and reasonable, directly virtual load circuit is built in electric energy meter, press control during test as required to switch, simple to operate, safe ready, can test in the case of the most non-less electricity consumption of user power utilization amount the most exactly.
Description
[technical field]
The present invention relates to the technical field of electric energy meter detection, particularly to a kind of built-in virtual load of electric energy field-checking
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
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, and on-the-spot external virtual load is bothersome, reduce work efficiency, therefore propose the built-in void of a kind of electric energy field-checking and bear
Lotus device.
[summary of the invention]
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, it is provided that a kind of built-in void of electric energy field-checking
Load device, 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 on-the-spot test in the case of not having electricity consumption, and on-the-spot external virtual load is bothersome, reduces work efficiency
Technical problem.
For achieving the above object, the present invention proposes a kind of built-in virtual load device of electric energy field-checking, including under
Housing, upper shell, fixation kit, resistance, current transformer and control switch, the periphery, bottom of described lower house is provided with convex
Edge, described flange offers some fixing holes, described upper shell and the removable snapping of lower house, described resistance, electricity
Current transformer and control switch are all fixedly installed in lower house, and wire is passed through in one end of described current transformer primary coil
Being connected with one end of resistance, the other end is connected by wire and the first external connection, the other end of described resistance and Current Mutual Inductance
One end of device secondary coil is all connected with the one end controlling switch by wire, another of described secondary transformer coil
Holding and connected by wire and the second external connection, the other end controlling switch is connected by wire and the 3rd external connection, and described is upper
Being provided with control knob on housing, described control knob is connected with controlling switch braking, and described lower house is by with fixing
The fixation kit of hole equivalent realizes be connected fixing with electric energy meter.
As preferably, described lower house offers the first through wires hole, the second threading with upper shell on identical sidewall
Hole and the 3rd through wires hole, described the first external connection, the second external connection and the 3rd external connection be each passed through the first through wires hole, second
Through wires hole and the 3rd through wires hole.
As preferably, described upper shell is printed on the first wiring mark on an upper, the second wiring mark and the 3rd connects
Line identifies, described first wiring mark, the second wiring mark and the 3rd wiring mark respectively with the first through wires hole, the second threading
Hole is corresponding with the position of the 3rd through wires hole.
As preferably, described the first wiring mark, the second wiring mark and the 3rd wiring mark are respectively " #N1 ", " #
L2”、“#L1”。
As preferably, described the first external connection, the second external connection and the 3rd external connection built-in with on electric energy meter respectively
Zero point inlet wire port, built-in live wire outlet port and built-in live wire inlet wire port connect.
As preferably, it is connected between outer wall surrounding and the flange of described lower house and has reinforcement.
As preferably, the number of primary turns of described current transformer is 250:1 with the ratio of secondary winding turns, electric current
Transformer is in galvanization, and the electric current in about 20mA, secondary coil of the electric current in primary coil is at about 5A.
As preferably, the housing protruding from electric energy meter outside described control knob is in communication with the outside.
Beneficial effects of the present invention: compared with prior art, a kind of electric energy field-checking that the present invention provides is with built-in
Virtual load device, rational in infrastructure, by being used in combination of the current transformer of the resistance of metering function and up-flow effect so that stream
The electric current entering current transformer controls at about 20mA, and the electric current of about 20mA is risen to about 5A, electric energy detection at the scene
Time, when user's current power amount is the least, and even user is not in the case of having electricity consumption, just have only to press and expose to electric energy meter case
Control knob on body makes the virtual load of one about 5A of electric energy meter superposition just can detect, and again presses control knob with disconnected after detection
Open virtual load device, additionally, virtual load device is built in electric energy meter case body, it is not necessary to reconnect the when of test at the scene,
Low cost and virtual load device are dismountable structure, during internal component damage, can change accordingly, and motility is good, handle
Safe ready, and it is greatly improved work efficiency, measuring accuracy is high.
Inventive feature and advantage will combine accompanying drawing by embodiment and be described in detail.
[accompanying drawing explanation]
Fig. 1 is the front view of the built-in virtual load device of the embodiment of the present invention a kind of electric energy field-checking；
Fig. 2 is the right view of the built-in virtual load device of the embodiment of the present invention a kind of electric energy field-checking；
Fig. 3 is the internal structure schematic diagram of the embodiment of the present invention；
Fig. 4 is the using effect figure of the embodiment of the present invention.
In figure: 1-lower house, 11-flange, 12-fixing hole, 13-flange, 2-upper shell, 21-control knob, 22-first
Wiring mark, 23-the second wiring mark, 24-the 3rd wiring mark, 3-fixation kit, 4-resistance, 5-current transformer, 6-control
System switch, 7-the first external connection, 70-the first through wires hole, 8-the second external connection, 80-the second through wires hole, 9-the 3rd external connection, 90-
3rd through wires hole, 10-electric energy meter, 101-built-in zero point inlet wire port, 102-built-in live wire outlet port, the built-in live wire of 103-enter
Line cap.
[detailed description of the invention]
For making the object, technical solutions and advantages of the present invention of greater clarity, below by accompanying drawing and embodiment, right
The present invention is further elaborated.However, it should be understood that specific embodiment described herein is only in order to explain this
Bright, it is not limited to the scope of the present invention.Additionally, in the following description, eliminate the description to known features and technology, with
Avoid unnecessarily obscuring idea of the invention.
Refering to Fig. 1 to Fig. 4, the embodiment of the present invention provides a kind of electric energy field-checking built-in virtual load device, including
Lower house 1, upper shell 2, fixation kit 3, resistance 4, current transformer 5 and control switch 6, outside the bottom of described lower house 1
Being provided with flange 11 week, described flange 11 offers some fixing holes 12, described upper shell 2 is removable with lower house 1
Snapping, described resistance 4, current transformer 5 and control switch 6 and be all fixedly installed in lower house 1, described current transformer
One end of 5 primary coils is connected with one end of resistance 4 by wire, and the other end is connected by wire and the first external connection 7, described
Resistance 4 other end summation current transformer 5 secondary coil one end all by wire with control switch 6 one end be connected, institute
The other end of current transformer 5 secondary coil stated is connected by wire and the second external connection 8, and the other end controlling switch 6 leads to
Cross wire and the 3rd external connection 9 connects, described upper shell 2 is provided with control knob 21, described control knob 21 and control
System switch 6 braking connects, and described lower house 1 is by realizing fixing with electric energy meter 10 with the fixation kit 3 of fixing hole 12 equivalent
Connect.
Wherein, described lower house 1 offers first through wires hole the 70, second threading on identical sidewall with upper shell 2
Hole 80 and the 3rd through wires hole 90, first described external connection the 7, second external connection 8 and the 3rd external connection 9 are each passed through the first threading
Hole the 70, second through wires hole 80 and the 3rd through wires hole 90, described upper shell 2 is printed on the first wiring mark 22, the on an upper
Two wiring marks 23 and the 3rd wiring mark 24, the first described wiring mark the 22, second wiring mark 23 and the 3rd wiring mark
Know 24 corresponding with the position of first through wires hole the 70, second through wires hole 80 and the 3rd through wires hole 90 respectively.
Further, first described wiring mark the 22, second wiring mark 23 and the 3rd wiring mark 24 are respectively " #
N1 ", " #L2 ", " #L1 ", first described external connection the 7, second external connection 8 and the 3rd external connection 9 respectively with on electric energy meter 10
Built-in zero point inlet wire port 101, built-in live wire outlet port 102 and built-in live wire inlet wire port 103 connect.
Further, it is connected between the outer wall surrounding of described lower house 1 and flange 11 and has reinforcement 13.Pass through reinforcement
13 stability improving whole virtual load device.
Further, the number of primary turns of described current transformer 5 is 250:1 with the ratio of secondary winding turns, electricity
Current transformer 5 is in galvanization, and the electric current in about 20mA, secondary coil of the electric current in primary coil is at about 5A.
In embodiments of the present invention, 4 metering functions of resistance, current transformer 5 plays electric current up-flow effect so that flow into electricity
The electric current of current transformer 5 primary coil controls at about 20mA, and it is left that the electric current of about 20mA is flowed up to 5A by current transformer 5 again
The right side, at the scene in test, when user's current power amount is the least, and even user is not in the case of having electricity consumption, presses control knob
21 virtual loads that just can make electric energy meter 10 one about 5A of superposition, it is possible to normally, test exactly, improve current user and work as
Front power consumption is the least, the situation that even user just cannot correctly test in the case of not having electricity consumption.
Further, the housing protruding from electric energy meter 10 outside described control knob 21 is in communication with the outside.
Work process of the present invention:
One electric energy field-checking of the present invention with during built-in virtual load device busy, electric energy detection at the scene
Time, when user's current power amount is the least, and even user is not in the case of having electricity consumption, just have only to press on electric energy meter 10 housing
Control knob 21, by being used in combination of the current transformer 5 of the resistance 4 of metering function and up-flow effect so that flow into electricity
The electric current of current transformer 5 controls at about 20mA, and the electric current of about 20mA is risen to about 5A, makes electric energy meter 10 superposition one
The virtual load of about 5A, it is not necessary to reconnect the when of test at the scene, simple to operate, safe ready, additionally, in virtual load device
It is placed in electric energy meter case body, it is not necessary to reconnect the when of test at the scene, low cost, and virtual load device is removable knot
Structure, during internal component damage, can change accordingly, and motility is good, and handling safety is convenient, and be greatly improved work efficiency and
Measuring accuracy.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent or the improvement etc. made within god and principle, should be included within the scope of the present invention.
Claims (8)
1. electric energy field-checking is with a built-in virtual load device, including lower house (1), upper shell (2), fixation kit (3),
Resistance (4), current transformer (5) and control switch (6), it is characterised in that: the periphery, bottom of described lower house (1) is provided with
Flange (11), described flange (11) offers some fixing holes (12), and described upper shell (2) is removable with lower house (1)
Formula snapping, described resistance (4), current transformer (5) and control switch (6) are all fixedly installed in lower house (1), described
One end of current transformer (5) primary coil is connected with one end of resistance (4) by wire, and the other end is by outside wire and first
Wiring (7) connects, and one end of other end summation current transformer (5) secondary coil of described resistance (4) is all by wire and control
One end of system switch (6) connects, and the other end of described current transformer (5) secondary coil passes through wire and the second external connection
(8) connecting, the other end controlling switch (6) is connected by wire and the 3rd external connection (9), and described upper shell (2) is upper to be arranged
Having a control knob (21), described control knob (21) is connected with controlling switch (6) braking, described lower house (1) by with
The fixation kit (3) of fixing hole (12) equivalent realizes be connected fixing with electric energy meter (10).
2. electric energy field-checking as claimed in claim 1 a kind of is with built-in virtual load device, it is characterised in that: under described
Housing (1) offers the first through wires hole (70), the second through wires hole (80) and the 3rd threading on identical sidewall with upper shell (2)
Hole (90), described the first external connection (7), the second external connection (8) and the 3rd external connection (9) are each passed through the first through wires hole
(70), the second through wires hole (80) and the 3rd through wires hole (90).
3. electric energy field-checking as claimed in claim 2 a kind of is with built-in virtual load device, it is characterised in that: described is upper
Housing (2) is printed on the first wiring mark (22), the second wiring mark (23) and the 3rd wiring mark (24) on an upper, described
The first wiring mark (22), the second wiring mark (23) and the 3rd wiring identify (24) respectively with the first through wires hole (70), the
Two through wires holes (80) are corresponding with the position of the 3rd through wires hole (90).
4. electric energy field-checking as claimed in claim 3 a kind of is with built-in virtual load device, it is characterised in that: described the
One wiring mark (22), the second wiring mark (23) and the 3rd wiring mark (24) are respectively " #N1 ", " #L2 ", " #L1 ".
5. electric energy field-checking as claimed in claim 1 a kind of is with built-in virtual load device, it is characterised in that: described the
One external connection (7), the second external connection (8) and the 3rd external connection (9) respectively with the built-in zero point inlet wire port on electric energy meter (10)
(101), built-in live wire outlet port (102) and built-in live wire inlet wire port (103) connect.
6. electric energy field-checking as claimed in claim 1 a kind of is with built-in virtual load device, it is characterised in that: under described
It is connected between the outer wall surrounding of housing (1) with flange (11) and has flange (13).
7. electric energy field-checking as claimed in claim 1 a kind of is with built-in virtual load device, it is characterised in that: described electricity
The number of primary turns of current transformer (5) is 250:1 with the ratio of secondary winding turns, current transformer (5) in galvanization,
The electric current in primary coil electric current in about 20mA, secondary coil is at about 5A.
8. electric energy field-checking as claimed in claim 1 a kind of is with built-in virtual load device, it is characterised in that: described control
The housing protruding from electric energy meter (10) outside button processed (21) is in communication with the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610531832.5A CN106066466A (en) | 2016-06-30 | 2016-06-30 | A kind of electric energy field-checking is with built-in virtual load device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610531832.5A CN106066466A (en) | 2016-06-30 | 2016-06-30 | A kind of electric energy field-checking is with built-in virtual load device |
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| Publication Number | Publication Date |
|---|---|
| CN106066466A true CN106066466A (en) | 2016-11-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610531832.5A Pending CN106066466A (en) | 2016-06-30 | 2016-06-30 | A kind of electric energy field-checking is with built-in virtual load device |
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| CN (1) | CN106066466A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114089245A (en) * | 2021-11-22 | 2022-02-25 | 广东电网有限责任公司广州供电局 | Meter checking instrument |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114089245A (en) * | 2021-11-22 | 2022-02-25 | 广东电网有限责任公司广州供电局 | Meter checking instrument |
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Application publication date: 20161102 |