CN202120748U - Current transformer for detecting current of zero lines - Google Patents

Current transformer for detecting current of zero lines Download PDF

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Publication number
CN202120748U
CN202120748U CN2011202177192U CN201120217719U CN202120748U CN 202120748 U CN202120748 U CN 202120748U CN 2011202177192 U CN2011202177192 U CN 2011202177192U CN 201120217719 U CN201120217719 U CN 201120217719U CN 202120748 U CN202120748 U CN 202120748U
Authority
CN
China
Prior art keywords
copper material
hole
shaped
platy
iron core
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2011202177192U
Other languages
Chinese (zh)
Inventor
李鹏朝
王灿
李敬洁
郑尧
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hebei Shenke Electronics Co Ltd
Original Assignee
Hebei Shenke Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hebei Shenke Electronics Co Ltd filed Critical Hebei Shenke Electronics Co Ltd
Priority to CN2011202177192U priority Critical patent/CN202120748U/en
Application granted granted Critical
Publication of CN202120748U publication Critical patent/CN202120748U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Transformers For Measuring Instruments (AREA)

Abstract

The utility model discloses a current transformer for detecting current of zero lines, which comprises a primary lead and a secondary coil. The secondary coil comprises an annular iron core, an enameled wire and an insulating shell, the annular iron core is made of iron-based ultracrystalline materials, the enameled wire is wound on the annular iron core, the insulating shell is used for packaging the annular iron core and the enameled wire, an I-shaped through hole is arranged in the middle of the annular iron core and on the insulating shell, the penetrating direction of the I-shaped through hole is coincident to an axis of the annular iron core, the primary lead is an I-shaped platy copper material, the platy copper material is inserted into the I-shaped through hole and is in interference fit with the I-shaped through hole, and a nickel protecting layer or tin protecting layer is arranged on the surface of the platy copper material. The current transformer has the advantages that the nickel protecting layer or tin protecting layer is arranged on the surface of the platy copper material which is utilized as the primary lead, so that corrosion resistance and conduction property of the platy copper material are improved, furthermore, the platy copper material is I-shaped, is directly inserted into the I-shaped through hole in the middle of the insulating shell during installation and is in interference fit with the I-shaped through hole, and the current transformer is mounted conveniently.

Description

A kind of current transformer that is used to detect neutral line current
Technical field
The utility model has related to a kind of electric energy meter parts, particularly a kind of current transformer that is used to detect neutral line current.
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, and through electromagnetic induction, 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 current transformer that is used to detect neutral line current; Solved the not enough problem of installing space in the electric energy meter; Also can satisfy simultaneously the accuracy of measuring of electric energy meter, and elementary lead-in wire is the tabular copper material of " one " font, easy for installation; Make the interior space of electric energy meter more be tending towards compact and reasonable, help 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 current transformer that is used to detect neutral line current 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 insulation crust that is wrapped in the enamelled wire on the annular core and is used to encapsulate annular core and enamelled wire; Said insulation crust 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 the tabular copper material of yi word pattern, and tabular copper material inserts in the said in-line through hole and both are interference fit; Said tabular copper material surface is provided with nickel protection layer or tin protective layer.
Said tabular copper material two ends are equipped with splicing ear.
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 is a yi word pattern; Directly insert when installing insulation crust middle part yi word pattern through hole interior and with its interference fit; Its two ends are provided with binding post, and the distance between two binding posts is identical with the specification volume of instrument transformer mounting terminal in the electric energy meter, the convenient installation; Can also simplify mounting structure with 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
Fig. 1 is the utility model front view;
Fig. 2 is the utility model left view.
In the accompanying drawings: 1, insulation crust; 2, elementary lead-in wire; 3, lead-out wire; 4, enamelled wire; 5, annular core.
Further the utility model is carried out detailed description below in conjunction with accompanying drawing.
Embodiment
A kind of current transformer that is used to detect neutral line current as depicted in figs. 1 and 2 comprises elementary lead-in wire 2 and secondary coil; Said secondary coil comprises the annular core of processing with the iron-base ultramicro-crystal material 5, the insulation crust 1 that is wrapped in the enamelled wire 4 on the annular core 5 and is used to encapsulate annular core 5 and enamelled wire 4; Said insulation crust 1 is positioned at annular core 5 medium positions and is provided with the in-line through hole that connects direction and annular core 5 deads in line; Said elementary lead-in wire 2 is the tabular copper material of yi word pattern, and tabular copper material inserts in the said in-line through hole and both are interference fit; Said tabular copper material surface is provided with nickel protection layer or tin protective layer.
Said tabular copper material two ends are equipped with splicing ear.
The utility model has disclosed a kind of current transformer that is used to detect neutral line current that is used for the individual event intelligent electric energy meter; In its insulation crust, be provided with secondary coil; Elementary lead-in wire adopts the tabular copper material of yi word pattern, and its two ends are provided with binding post, have installing hole on the binding post; The size of installing hole and spacing meet electric energy meter splicing ear specification; Annular core and the enamelled wire outside it that secondary coil is processed by the ultracrystallite material are formed; The secondary lead-out wire 3 of secondary coil directly connects electric energy meter neutral line current testing circuit, for the electric energy meter chip provides current signal; Elementary wire surface is through acid wash passivation, zinc-plated or Nickel Plating Treatment, good conductivity, anticorrosion; Through epoxy resin the secondary coil one is encapsulated in the insulation crust during production; Elementary lead-in wire inserts in the in-line shape through hole at insulation crust middle part of packaged secondary coil again, is used to connect circuit to be measured on the one hand, on the other hand; Can also be as the supporting construction of instrument transformer; Simplify mounting structure, insulation effect is good, and is easy for installation.

Claims (2)

1. a current transformer that is used to detect neutral line current is characterized in that: comprise elementary lead-in wire (2) and secondary coil; Said secondary coil comprises the annular core of processing with the iron-base ultramicro-crystal material (5), the insulation crust (1) that is wrapped in the enamelled wire (4) on the annular core (5) and is used to encapsulate annular core (5) and enamelled wire (4); Said insulation crust (1) is positioned at annular core (5) medium position and is provided with the in-line through hole that the perforation direction overlaps with annular core (5) axis of rotation; Said elementary lead-in wire (2) is the tabular copper material of yi word pattern, and tabular copper material inserts in the said in-line through hole and both are interference fit; Said tabular copper material surface is provided with nickel protection layer or tin protective layer.
2. a kind of current transformer that is used to detect neutral line current according to claim 1 is characterized in that: said tabular copper material two ends are equipped with splicing ear.
CN2011202177192U 2011-06-24 2011-06-24 Current transformer for detecting current of zero lines Expired - Fee Related CN202120748U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011202177192U CN202120748U (en) 2011-06-24 2011-06-24 Current transformer for detecting current of zero lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011202177192U CN202120748U (en) 2011-06-24 2011-06-24 Current transformer for detecting current of zero lines

Publications (1)

Publication Number Publication Date
CN202120748U true CN202120748U (en) 2012-01-18

Family

ID=45461793

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011202177192U Expired - Fee Related CN202120748U (en) 2011-06-24 2011-06-24 Current transformer for detecting current of zero lines

Country Status (1)

Country Link
CN (1) CN202120748U (en)

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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