CN203422468U - Electric energy meter maintenance tool - Google Patents
Electric energy meter maintenance tool Download PDFInfo
- Publication number
- CN203422468U CN203422468U CN201320551640.2U CN201320551640U CN203422468U CN 203422468 U CN203422468 U CN 203422468U CN 201320551640 U CN201320551640 U CN 201320551640U CN 203422468 U CN203422468 U CN 203422468U
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- electric energy
- energy meter
- tap
- plug
- maintenance
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Abstract
An electric energy meter maintenance tool comprises a transformer with a primary coil and a secondary coil. Two ends of the primary coil are respectively connected with a first tap and a second tap; and two ends of the secondary coil are respectively connected with a first plug and a second plug, wherein the second tap is connected with the second plug. When an electric energy meter is maintained, the first plug and the second plug are correspondingly connected with two live wire terminals of the electric energy meter, a power supply zero wire is connected with the first tap and the zero wire terminal of the electric energy meter, and the power supply live wire is connected with the second tap. The tool supplies voltage source and current source for maintenance of an electric energy meter.
Description
Technical field
The utility model relates to electric energy meter maintenance field, particularly a kind of electric energy meter maintenance frock.
Background technology
In electric energy meter production run and during after-sales service, mostly use electrical energy meter calibration calibrating installation or calibration stage body, but verification calibrating installation volume is heavy, calibration stage body is generally used on production line, and calibration stage body is bulky, can not at will move, in addition, the standard source in calibration stage body needs regular censorship.
For the mobile problem of above-mentioned inconvenience, commonly use at present a kind of single three-phase electric energy meter verifying attachment or a kind of simple and easy isolating transformer power-up tool.Single three-phase electric energy meter verifying attachment is mainly used in electric energy meter exploitation and maintenance, and this device has reduced concrete epi-position number, and electric current and voltage can add respectively, but volume is relatively also very large, and standard source is also very heavy, not portable, expensive.Simple and easy isolating transformer power-up tool is mainly used in electric energy meter maintenance, and this device is relatively light, easy to use, but when maintenance electric energy meter, can only provide voltage source, and current source cannot be provided, and for table meter metering fault, cannot keep in repair.
Utility model content
The utility model is in order to overcome defect in above-mentioned prior art, and a kind of electric energy meter maintenance frock is provided, and cost is low, is convenient for carrying, simultaneously for electric energy meter maintenance provides voltage source and current source.
For achieving the above object, the utility model provides a kind of electric energy meter maintenance frock, comprise a transformer, it has primary coil and secondary coil, at described primary coil two ends, connect respectively the first tap and the second tap, at described secondary coil two ends, access respectively the first plug and the second plug, wherein said the second tap and described the second plug are connected; When maintenance electric energy meter, described the first plug and described the second plug and the corresponding connection of electric energy meter two input end, zero-power line is connected with described the first tap and electric energy meter output terminal simultaneously, and power firestreak and described the second tap are connected.
In technique scheme, also comprise a medium line, its one end is the 3rd tap, another termination the 3rd plug; When maintenance electric energy meter, the first plug and the second plug and the corresponding connection of electric energy meter two live wire end, the 3rd plug and electric energy meter zero line side are connected, and zero-power line is connected with the first tap and the 3rd tap simultaneously, and power firestreak and the second tap are connected.
In technique scheme, also comprise voltage controller, its control power firestreak and the second tap are connected and are disconnected, and control zero-power line and the first tap and the 3rd tap and connect disconnection.
In technique scheme, voltage controller is single-pole double-throw switch (SPDT).
In technique scheme, also comprise current switch, it accesses between the first tap and the 3rd tap.
In technique scheme, the first plug and the second plug mate with the connection terminal of electric energy meter two live wire ends.
In technique scheme, also comprise shell, transformer and medium line pack in shell, and voltage controller and current switch are contained in upper surface of outer cover, and the first plug, the second tap and the 3rd plug are contained on shell side surface.
In technique scheme, draw two wires on shell side face, its difference is corresponding to be connected with single-pole double-throw switch (SPDT) one end.
Compared with prior art, the beneficial effect the utlity model has: by the reconfiguration of transformer connection mode and increase a medium line, can be simultaneously for electric energy meter maintenance provide voltage source and current source; By single-pole double-throw switch (SPDT) and current switch are installed, can conveniently to the voltage of this frock and electric current, control.
Accompanying drawing explanation
Fig. 1 is transformer connection figure in the utility model electric energy meter maintenance frock;
Fig. 2 is the utility model electric energy meter maintenance frock circuit theory diagrams;
Fig. 3 is the utility model electric energy meter maintenance frock part organigram;
Fig. 4 utilizes the utility model electric energy meter maintenance frock maintenance schematic diagram;
Fig. 5 is the utility model electric energy meter maintenance frock schematic perspective view.
Embodiment
Below in conjunction with accompanying drawing, an embodiment of the present utility model is described in detail, but is to be understood that protection domain of the present utility model is not subject to the restriction of embodiment.
Electric energy meter maintenance frock cardinal principle of the present utility model is that the mode of connection of existing transformer is carried out to reconfiguration, in addition, increases the control of voltage switch and current switch, for electric energy meter maintenance provides required voltage source and current source, frock is small and exquisite, easily carries, simple to operate.This frock is that the maintenance for the electric energy meter of design parameter designs, because existing single-phase meter technology is to carry out branch pressure voltage current sample at live wire termination manganese ketone sheet, according to the requirement of computation chip etc., select suitable manganese ketone resistance, utilize this frock when maintenance, need to apply certain voltage and electric current is realized fictitious load to electric energy meter, carry out pulse output metering, to meet the pacing items of metering section maintenance.
As shown in Figures 1 and 2, this frock is mainly to utilize transformer working principle, and any two coils to same transformer, have voltage U and number of turn N to be directly proportional.Wherein, the transformer of using in this frock has primary coil 1 and secondary coil 2, connects respectively the first tap 1a and the second tap 2a at primary coil 1 two ends, accesses respectively the first plug 10 and the second plug 20 at secondary coil 2 two ends, wherein, the second tap 2a and the second plug 20 are connected; When using this frock, the first plug 10 and the second plug 20 and the electric energy meter two corresponding connections of live wire end (referring to Fig. 4), the first plug 10 and the second plug 20 can be designed to mutually mate with the connection terminal of electric energy meter two live wire ends, in use, the first plug 10 and the second plug 20 directly insert the jack of electric energy meter two live wire ends and fix.Zero-power line is connected (referring to Fig. 4) with the first tap 1a and electric energy meter zero line side simultaneously, after power firestreak and the second tap 2a connect, at the electric energy meter live wire end with the corresponding connection of the second plug 20 and electric energy meter zero line side access civil power 220V, to electric energy meter making alive.Meanwhile, at primary coil 1 access civil power 220V, the N1 coil of transformer produces voltage, and in addition, the coil ratio of the transformer in this frock is determined according to load simulation.Preferably, adopt thick copper lines to be wound on transformer secondary output winding, thick copper lines termination itself can be used as plug access energy meter terminal, and, by the difference of thick copper lines and primary coil material and cross-sectional area, according to electromagnetic induction, secondary coil 2 produces electromotive force, thereby give on electric energy meter copper-manganese sheet and apply voltage generation current, meet the pacing items of metering section maintenance.
As shown in Fig. 3 and Fig. 5, this frock can be made a square casing structure, and the wire interconnecting piece of the primary coil 1 of transformer, secondary coil 2 and opposite ends divides perfusion into a single integrated structure, and is contained in housing 4 inside.In housing 4 inside, a medium line 3 is also housed, medium line 3 one end are the 3rd tap 3a, another termination the 3rd plug 30, and zero-power line can be connected by medium line 3 and electric energy meter zero line side.On shell 4 sides, draw two wire 5(referring to Fig. 5), when using this frock, wire 5 is connected with civil power.At shell 4 upper surfaces, voltage controller 31 and current switch 32 are installed, voltage controller 31 is specially single-pole double-throw switch (SPDT), particularly, one end of single-pole double-throw switch (SPDT) is connected with two wires 5 respectively, and the other end of single-pole double-throw switch (SPDT) is connected with the second tap 2a and the 3rd tap 3a respectively; One end of current switch 32 is connected with the 3rd tap 3a, and the other end of current switch 32 is connected with the first tap 1a.
When single-pole double-throw switch (SPDT) is closed, between the second tap 2a and the 3rd tap 3a, there is 220V voltage, because the 3rd tap 3a is connected by medium line 3 with the 3rd plug 30, the second tap 2a and the second plug 20 are connected, so, between the second plug 20 and the 3rd plug 30, apply civil power 220V, the voltage needs of maintenance electric energy meter are provided.And when current switch 32 is closed, between the first tap 1a and the second tap 2a, apply civil power 220V, at primary coil 1 two ends, apply 220V voltage, accordingly, at secondary coil 2 two ends, produce corresponding electromotive force, certainly, between the first plug 10 and the second plug 20, produce the electromotive force equating with secondary coil 2 two ends.So, when the first plug 10 and the second plug 20 are connected with electric energy meter two input end connection terminals respectively, can realize electric energy meter fictitious load, carry out pulse output metering, meet the pacing items of metering section maintenance.
Disclosed is above only specific embodiment of the utility model, and still, the utility model is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection domain of the present utility model.
Claims (8)
1. an electric energy meter maintenance frock, it is characterized in that, comprise a transformer, it has primary coil and secondary coil, at described primary coil two ends, connect respectively the first tap and the second tap, at described secondary coil two ends, access respectively the first plug and the second plug, wherein said the second tap and described the second plug are connected;
When maintenance electric energy meter, described the first plug and described the second plug and the corresponding connection of electric energy meter two live wire end, zero-power line is connected with described the first tap and electric energy meter zero line side simultaneously, and power firestreak and described the second tap are connected.
2. electric energy meter maintenance frock according to claim 1, is characterized in that, also comprises a medium line, and its one end is the 3rd tap, another termination the 3rd plug;
When maintenance electric energy meter, described the first plug and described the second plug and the corresponding connection of electric energy meter two live wire end, described the 3rd plug and electric energy meter zero line side are connected, and zero-power line is connected with described the first tap and described the 3rd tap simultaneously, and power firestreak and described the second tap are connected.
3. electric energy meter maintenance frock according to claim 2, is characterized in that, also comprises voltage controller, and its control power firestreak and described the second tap are connected and disconnected, and controls zero-power line and described the first tap and described the 3rd tap and connect disconnection.
4. electric energy meter maintenance frock according to claim 3, is characterized in that, described voltage controller is single-pole double-throw switch (SPDT).
5. electric energy meter maintenance frock according to claim 4, is characterized in that, also comprises current switch, and it accesses between described the first tap and described the 3rd tap.
6. electric energy meter maintenance frock according to claim 5, is characterized in that, described the first plug and described the second plug mate with the connection terminal of electric energy meter two live wire ends.
7. according to the arbitrary described electric energy meter maintenance frock of claim 5 to 6, it is characterized in that, also comprise shell, described transformer and described medium line pack in described shell, described voltage controller and described current switch are contained in described upper surface of outer cover, and described the first plug, described the second tap and described the 3rd plug are contained on described shell side surface.
8. electric energy meter maintenance frock according to claim 7, is characterized in that, draws two wires on described shell side, and its difference is corresponding to be connected with described single-pole double-throw switch (SPDT) one end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320551640.2U CN203422468U (en) | 2013-09-05 | 2013-09-05 | Electric energy meter maintenance tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320551640.2U CN203422468U (en) | 2013-09-05 | 2013-09-05 | Electric energy meter maintenance tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203422468U true CN203422468U (en) | 2014-02-05 |
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ID=50021563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320551640.2U Expired - Lifetime CN203422468U (en) | 2013-09-05 | 2013-09-05 | Electric energy meter maintenance tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203422468U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969479A (en) * | 2014-05-14 | 2014-08-06 | 国家电网公司 | Device for reading value displayed by electric energy meter |
| CN104765014A (en) * | 2015-02-06 | 2015-07-08 | 海盐盛迪电子科技有限公司 | Detection tool for ANSI standard electric energy meter |
-
2013
- 2013-09-05 CN CN201320551640.2U patent/CN203422468U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103969479A (en) * | 2014-05-14 | 2014-08-06 | 国家电网公司 | Device for reading value displayed by electric energy meter |
| CN104765014A (en) * | 2015-02-06 | 2015-07-08 | 海盐盛迪电子科技有限公司 | Detection tool for ANSI standard electric energy meter |
| CN104765014B (en) * | 2015-02-06 | 2017-12-15 | 浙江盛迪科技股份有限公司 | ANSI standard electric energy meter detecting tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140205 |