CN202120749U - Mutual inductor for electric energy meters of state grid and agricultural grid - Google Patents
Mutual inductor for electric energy meters of state grid and agricultural grid Download PDFInfo
- Publication number
- CN202120749U CN202120749U CN2011202177116U CN201120217711U CN202120749U CN 202120749 U CN202120749 U CN 202120749U CN 2011202177116 U CN2011202177116 U CN 2011202177116U CN 201120217711 U CN201120217711 U CN 201120217711U CN 202120749 U CN202120749 U CN 202120749U
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- electric energy
- copper material
- mutual inductor
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- grid
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Abstract
The utility model discloses a mutual inductor for electric energy meters of the state grid and the agricultural grid, which comprises a primary lead and a secondary coil. The secondary coil comprises an annular iron core made from iron-based ultracrystallite materials, an enameled wire wound on the annular iron core and an epoxy resin shell for sealing the annular iron core and the enameled wire. The shell is arranged at a middle position of the annular iron core and provided with a cross-bar shape through hole, and the through direction of the through hole is coincident with a rotating axis of the annular iron core. The primary lead is made of a plate type copper material, and the plate type copper material is inserted into the cross-bar shape through hole in interference fit mode. The mutual inductor for electric energy meters of the state grid and the agricultural grid has the advantages that a nickel protecting layer or a tin protecting layer is arranged on the surface of the plate type copper material serving as the primary lead so as to improve the anticorrosion performance and conductivity performance, the plate type copper material can be manufactured into an 'n' shape or cross bar shape according to installation structures of the electric energy meters, wiring terminals are arranged at two ends of the plate type copper material, and the distance between the two wiring terminals is identical with the distance of installation positions of the mutual inductor, thereby facilitating installation.
Description
Technical field
The utility model has related to a kind of electric energy meter parts, particularly a kind of state net rural power grids electric energy instrumental mutual inductor.
Background technology
Existing current transformer generally is made up of elementary lead-in wire, iron core, secondary coil, and elementary lead-in wire is connected on the tested current circuit, produces electric current through electromagnetic induction at secondary coil, and the current signal of secondary coil induction output supplies instrument and meter to measure usefulness., miniaturization development integrated along with electric energy meter, existing current transformer can not satisfy the installation requirement in electric energy meter.
The utility model content
The utility model technical problem to be solved provides a kind of state net rural power grids electric energy instrumental mutual inductor, has solved the not enough problem of installing space in state's net rural power grids electric energy meter, also can satisfy the requirement of electric energy meter metering current accuracy simultaneously; Elementary lead-in wire in the utility model is detachably installed, and is easy for installation, simplifies mounting structure, makes the interior space of electric energy meter more be tending towards compact, reasonable, helps the miniaturization of electric energy meter.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of state net rural power grids electric energy instrumental mutual inductor comprises elementary lead-in wire and secondary coil; Said secondary coil comprises the annular core of processing with the iron-base ultramicro-crystal material, the epoxy package that is wrapped in the enamelled wire on the annular core and is used to encapsulate annular core and enamelled wire; Said shell is positioned at the annular core medium position and is provided with the in-line through hole that the perforation direction overlaps with the annular core axis of rotation; Said elementary lead-in wire is tabular copper material, and tabular copper material inserts in the said in-line through hole and both are interference fit.
Said tabular copper material is provided with nickel protection layer or tin protective layer for " n " shape or yi word pattern and its surface.
Said tabular copper material two ends are equipped with fixing hole.
Said enamelled wire two ends all are fixedly connected with adopts the thread lead-out wire of multiply soft copper.
Adopt the beneficial effect that technique scheme produced to be: the tabular copper material surface as elementary lead-in wire is provided with nickel protection layer or tin protective layer, improves its antiseptic property and electric conductivity; And tabular copper material can be according to mounting structure different choice " n " shape or yi word pattern in the electric energy meter; Its two ends are provided with binding post; Instrument transformer mounting terminal specification is identical in distance between two binding posts and the electric energy meter, the convenient installation, the yi word pattern through hole interference fit in the middle part of tabular copper material and the epoxy package; Can simplify and install as the tabular copper material of elementary lead-in wire installation supporting construction as instrument transformer; The lead-out mode of secondary coil is for to draw in the utility model, and directly will go between in the installation process is connected with the electric energy metrical loop of electric energy meter.
Description of drawings
Structural representation when Fig. 1 does not install elementary lead-in wire for the utility model;
Fig. 2 installs the structural scheme of mechanism behind the elementary lead-in wire for the utility model.
In the accompanying drawings: 1, annular core; 2, epoxy package; 3, enamelled wire; 4, through hole; 5, lead-out wire; 6, elementary lead-in wire.
Further the utility model is carried out detailed description below in conjunction with accompanying drawing.
Embodiment
A kind of state net rural power grids electric energy instrumental mutual inductor as shown in Figure 2 comprises elementary lead-in wire 6 and secondary coil; Said secondary coil comprises the annular core of processing with the iron-base ultramicro-crystal material 1, the epoxy package 2 that is wrapped in the enamelled wire 3 on the annular core 1 and is used to encapsulate annular core 1 and enamelled wire 3; Said epoxy package 2 is positioned at annular core 1 medium position and is provided with the in-line through hole 4 (as shown in Figure 1) that the perforation direction overlaps with the axis of rotation of annular core 1; Said elementary lead-in wire 6 is tabular copper material, and tabular copper material inserts in the said in-line through hole 4 and both are interference fit.
Said tabular copper material is provided with nickel protection layer or tin protective layer for " n " shape or yi word pattern and its surface.
Said tabular copper material two ends are equipped with fixing hole.
Said enamelled wire 3 two ends all are fixedly connected with adopts the thread lead-out wire 5 of multiply soft copper;
In the epoxy package 2 of the utility model state net rural power grids instrumental mutual inductor; Be provided with secondary coil; Elementary lead-in wire 6 adopts tabular copper material to process, and can be yi word pattern, also can be " n " shape; Elementary lead-in wire 6 ends have installing hole, and the size of installing hole is identical with the specification of electric energy meter splicing ear with spacing; Annular core and the enamelled wire outside it that secondary coil is processed by the iron-base ultramicro-crystal material are formed; The lead-out wire 5 of secondary coil connects electrical energy meter electricity flowmeter amount loop, for the electric energy meter chip provides current signal; Elementary lead-in wire 6 electroplating surfaces with tin or Nickel Plating Treatment, good conductivity, anticorrosion; Through epoxy resin the secondary coil one is encapsulated in the epoxy package 2 during production, elementary lead-in wire 1 inserts in the draw-in groove at epoxy package middle part of packaged secondary coil again, and insulation effect is good, and is easy for installation.
Claims (4)
1. state's net rural power grids electric energy instrumental mutual inductor is characterized in that: comprise elementary lead-in wire (6) and secondary coil; Said secondary coil comprises the annular core of processing with the iron-base ultramicro-crystal material (1), the epoxy package (2) that is wrapped in the enamelled wire (3) on the annular core (1) and is used to encapsulate annular core (1) and enamelled wire (3); Said epoxy package (2) is positioned at annular core (1) medium position and is provided with the in-line through hole (4) that the perforation direction overlaps with annular core (1) axis of rotation; Said elementary lead-in wire (6) is tabular copper material, and tabular copper material inserts in the said in-line through hole (4) and both are interference fit.
2. a kind of state according to claim 1 net rural power grids electric energy instrumental mutual inductor is characterized in that: said tabular copper material is provided with nickel protection layer or tin protective layer for " n " shape or yi word pattern and its surface.
3. a kind of state according to claim 2 net rural power grids electric energy instrumental mutual inductor, it is characterized in that: said tabular copper material two ends are equipped with fixing hole.
4. a kind of state according to claim 3 net rural power grids electric energy instrumental mutual inductor, it is characterized in that: said enamelled wire (3) two ends all are fixedly connected with adopts the thread lead-out wire of multiply soft copper (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202177116U CN202120749U (en) | 2011-06-24 | 2011-06-24 | Mutual inductor for electric energy meters of state grid and agricultural grid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202177116U CN202120749U (en) | 2011-06-24 | 2011-06-24 | Mutual inductor for electric energy meters of state grid and agricultural grid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202120749U true CN202120749U (en) | 2012-01-18 |
Family
ID=45461794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202177116U Expired - Fee Related CN202120749U (en) | 2011-06-24 | 2011-06-24 | Mutual inductor for electric energy meters of state grid and agricultural grid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202120749U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106971831A (en) * | 2017-04-05 | 2017-07-21 | 科誉德电气（苏州）有限公司 | Voltage transformer |
| CN112038069A (en) * | 2020-07-28 | 2020-12-04 | 中广核核电运营有限公司 | Online repair method for secondary winding outgoing line of current transformer |
-
2011
- 2011-06-24 CN CN2011202177116U patent/CN202120749U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106971831A (en) * | 2017-04-05 | 2017-07-21 | 科誉德电气（苏州）有限公司 | Voltage transformer |
| CN112038069A (en) * | 2020-07-28 | 2020-12-04 | 中广核核电运营有限公司 | Online repair method for secondary winding outgoing line of current transformer |
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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 |
Granted publication date: 20120118 Termination date: 20200624 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |