CN209571322U - Current transformer for power transmission network potential device - Google Patents
Current transformer for power transmission network potential device Download PDFInfo
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- CN209571322U CN209571322U CN201920449511.XU CN201920449511U CN209571322U CN 209571322 U CN209571322 U CN 209571322U CN 201920449511 U CN201920449511 U CN 201920449511U CN 209571322 U CN209571322 U CN 209571322U
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Abstract
The utility model discloses one kind can adjust secondary side winding, exports the effective umber of turn of electric current, thus when primary side current is stablized, the current transformer for power transmission network potential device of adjustable inductive output size of current.This is used for the current transformer of power transmission network potential device, including O-shaped magnetic core, shell；It is provided with insulating barrier on O-shaped magnetic core, be provided with annular groove, and conduct piece is set in annular groove on shell, and is provided with winding fixing piece on O-shaped magnetic core, and there is the conductive sheet being electrically connected with winding on winding fixing piece；And conduct piece contacts electrical connection with conductive sheet；It is provided with electrical piece on the inner wall of annular groove simultaneously, electrical piece is electrically connected with output terminal；And electrical piece and conduct piece, contact electrical connection.It is used for the current transformer of power transmission network potential device using this, enables to output current adjustment；To be suitable for the instrument of different ranges.
Description
Technical field
It is especially a kind of for power transmission network potential device the utility model relates to the ancillary equipment of power transmission network potential device
Current transformer.
Background technique
Well-known: current transformer is that primary side high current is converted into the small electricity of secondary side according to electromagnetic induction principle
Stream is come the instrument that measures.Current transformer is made of the iron core and winding being closed.Its first side winding the number of turns is seldom, and string exists
In the route for the electric current for needing to measure.
Therefore it often there are whole electric currents of route to flow through, secondary side winding turn ratio is more, be serially connected in measuring instrumentss with
In protective loop, at work, its secondary side circuit is closure always to current transformer, therefore measuring instrumentss and is protected back
The impedance very little of road series coil, the close short circuit of the working condition of current transformer.
Since the umber of turn of existing Current Transformer Secondary side winding is fixed, so that stablizing in primary side current
In the case where, it may be only available for a kind of measuring instrumentss of range；So that the corresponding measuring instrumentss used are single.To making
With bringing inconvenience.
Utility model content
The technical problem to be solved by the utility model is to provide one kind can adjust secondary side winding, and output electric current is effective
Umber of turn, so that adjustable inductive output size of current is set for power transmission network transformation when primary side current is stablized
Standby current transformer.
The technical scheme adopted by the utility model to solve the technical problem is as follows: the electric current for power transmission network potential device is mutual
Sensor, including insulator foot, shell；O-shaped magnetic core is provided on the insulator foot；It is arranged on the outer surface of the O-shaped magnetic core
There is circumferentially equally distributed insulating spacer；Winding limiting slot is formed between two neighboring insulating spacer；
The upper half-turn of the O-shaped magnetic core is high-voltage winding around line segment；The lower branch of the O-shaped magnetic core is output winding coiling
Section；The high-voltage winding is wound with the first winding around line segment；The output winding is wound with the second winding on line segment；
It is arranged on the positive insulating spacer of O-shaped magnetic core jagged；And the notch of all insulating spacers is positioned at same
On annulus；Winding fixing piece is installed on the notch；Winding fixing piece upper surface is provided with conductive sheet；In the winding
The turn coil that changes in winding limiting slot is electrically connected with the conductive sheet of the winding fixing piece in the winding limiting slot；
Annular convex platform is provided on the front of the shell；The shell it is interior it is intracavitary be provided with it is corresponding with annular convex platform
Annular groove；The lower semisection of annular convex platform on the front of the shell is provided with the semi-circular through slot of connection annular groove；
The annular groove bottom is provided with annular insulating mat piece；Conduct piece is provided in the annular groove；It is described to lead
Electric part one end is provided with insulation connecting column；One end of the insulation connecting column sequentially passes through annular insulating mat piece, semi-circular through slot,
And it is provided with insulation top cap；Electrical piece is provided on the inner wall of the annular groove；The conduct piece is contacted with electrical piece, and electricity
Connection；
There are two output wiring terminals for setting on the outer surface of the shell lower end；One output wiring terminal is electrically connected with electrical piece
It connects；Another output wiring terminal is electrically connected with one end of the second winding；
The shell back has opening；Institute's shell covers O-shaped magnetic core；The conduct piece and winding fixing piece upper surface
Conductive sheet contact；Rear baffle is provided at the shell open back；The closed shell of rear baffle；It is set above the shell
It is equipped with high tension terminal；The high tension terminal is electrically connected with the first winding.
Preferably, the O-shaped magnetic core uses iron core.
Further, the outer surface of the high tension terminal is set with high-pressure insulating ring.
Preferably, the conduct piece is made using copper.
Specifically, the winding fixing piece is adopted and is made of plastic, the conductive sheet on the winding fixing piece is embedded in winding
The upper surface of fixing piece.
The beneficial effects of the utility model are: the Current Mutual Inductance described in the utility model for power transmission network potential device
Device, due to being provided with insulating barrier on O-shaped magnetic core, so that winding rule is wrapped on O-shaped magnetic core；Simultaneously by
Housing cavity, which is arranged in annular groove and annular groove, is arranged conduct piece, and is provided with winding on O-shaped magnetic core and fixes
Part, and there is the conductive sheet being electrically connected with winding on winding fixing piece；And conduct piece contacts electrical connection with conductive sheet；Simultaneously
Electrical piece is provided on the inner wall of annular groove, electrical piece is electrically connected with output terminal；And electrical piece and conduct piece, contact electricity
Connection；Thus by sliding conduct piece in annular groove, to change the coil turn for connecting output terminal secondary winding
Number, to change the electric current of output, so that output current adjustment；To be suitable for the instrument of different ranges.
Detailed description of the invention
Fig. 1 is the perspective view of the explosion in the utility model embodiment for the current transformer of power transmission network potential device；
Fig. 2 is the main view in the utility model embodiment for the current transformer of power transmission network potential device；
Fig. 3 is the A-A cross-sectional view in Fig. 2；
Fig. 4 is the B-B cross-sectional view in Fig. 2；
Fig. 5 is the partial enlarged view of the C in Fig. 3；
Fig. 6 is the structural schematic diagram of O-shaped magnetic core in the utility model embodiment；
Fig. 7 is the partial enlarged view of the D in Fig. 6；
Indicated in figure: 1- pedestal, 2-O type magnetic core, 3- insulating spacer, 4- winding fixing piece, the second winding of 5-, 6- first around
Group, 7- shell, 8- high tension terminal, 9- annular convex platform, 10- output wiring terminal, 11- insulation top cap, 13- rear baffle, 14- are exhausted
Edge annular gasket, 15- insulation connecting column, 16- conduct piece, 17- conductor wire.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in Figures 1 to 7, the current transformer described in the utility model for power transmission network potential device, including it is exhausted
Edge pedestal 1, shell 7；O-shaped magnetic core 2 is provided on the insulator foot 1；It is provided on the outer surface of the O-shaped magnetic core 2 along circle
All equally distributed insulating spacers 3；Winding limiting slot is formed between two neighboring insulating spacer 3；
The upper half-turn of the O-shaped magnetic core 2 is high-voltage winding around line segment；The lower branch of the O-shaped magnetic core 2 be output winding around
Line segment；The high-voltage winding is wound with the first winding 6 around line segment；The output winding is wound with the second winding 5 on line segment；
It is arranged on the positive insulating spacer 3 of the O-shaped magnetic core 2 jagged；And the notch 31 of all insulating spacers 3 is located at together
On one annulus；Winding fixing piece 4 is installed on the notch 31；4 upper surface of winding fixing piece is provided with conductive sheet 41；
41 electricity of conductive sheet for changing the winding fixing piece 4 in turn coil and the winding limiting slot being located in winding limiting slot in the winding
Connection；
Annular convex platform 9 is provided on the front of the shell 7；The shell 7 it is interior it is intracavitary be provided with it is right with annular convex platform 9
The annular groove 92 answered；The lower semisection of annular convex platform 9 on the front of the shell 7 is provided with the semi-ring of connection annular groove 92
Shape through slot 91；
92 bottom of annular groove is provided with annular insulating mat piece 14；Conduct piece is provided in the annular groove 92
16；Described 16 one end of conduct piece is provided with insulation connecting column 15；One end of the insulation connecting column 15 sequentially passes through annular insulation
Gasket 14, semi-circular through slot 91, and it is provided with insulation top cap 11；Electrical piece is provided on the inner wall of the annular groove 92；Institute
It states conduct piece 16 to contact with electrical piece, and is electrically connected；
There are two output wiring terminals 10 for setting on the outer surface of 7 lower end of shell；One output wiring terminal 10 and energization
Piece electrical connection；Another output wiring terminal 10 is electrically connected with one end of the second winding 5；
7 back of shell has opening；Institute's shell 7 covers O-shaped magnetic core 2；On the conduct piece 16 and winding fixing piece 4
The conductive sheet 41 on surface contacts；Rear baffle 13 is provided at 7 open back of shell；The closed shell 7 of the rear baffle 13；Institute
The top for stating shell 7 is provided with high tension terminal 8；The high tension terminal 8 is electrically connected with the first winding 6.
During application, staff only need to make conduct piece 16 sliding in annular groove 92 by the top cap 11 that insulate
It is dynamic, so that conduct piece 16 is contacted with the conductive sheet 41 of 4 upper surface of winding fixing piece of different location, to realize different circles
The electric current of several windings exports；To realize the adjusting to current transformer output electric current.It is used when adjusting to staff
Instrument measurement current range when, can stop adjusting.
In conclusion the current transformer described in the utility model for power transmission network potential device, due in O-shaped magnetic core
On be provided with insulating barrier so that winding rule be wrapped on O-shaped magnetic core；Simultaneously by setting annular groove, and
Conduct piece is set in annular groove, and is provided with winding fixing piece on O-shaped magnetic core, and on winding fixing piece have with
The conductive sheet of winding electrical connection；And conduct piece contacts electrical connection with conductive sheet；It is provided on the inner wall of annular groove simultaneously logical
Electric piece, electrical piece are electrically connected with output terminal；And electrical piece and conduct piece, contact electrical connection；To by making conduct piece
It is slided in annular groove, so that change the coil turn of connection output terminal secondary winding makes to change the electric current of output
Current adjustment must be exported；To be suitable for the instrument of different ranges.
For save the cost, it is preferred that the O-shaped magnetic core 2 uses iron core.
In order to improve safety, further, the outer surface of the high tension terminal 8 is set with high-pressure insulating ring.
In order to be increased to the electric conductivity of conduct piece, it is preferred that the conduct piece is made using copper.
In order to improve safety, avoids occurring short circuit between winding, burn winding；Preferably, the winding fixing piece 4 is adopted
It is made of plastic, the conductive sheet 41 on the winding fixing piece 4 is embedded in the upper surface of winding fixing piece 4.
Claims (5)
1. being used for the current transformer of power transmission network potential device, it is characterised in that: including insulator foot (1), shell (7)；It is described
O-shaped magnetic core (2) are provided on insulator foot (1)；It is provided on the outer surface of the O-shaped magnetic core (2) circumferentially equally distributed
Insulating spacer (3)；Winding limiting slot is formed between two neighboring insulating spacer (3)；
The upper half-turn of the O-shaped magnetic core (2) is high-voltage winding around line segment；The lower branch of the O-shaped magnetic core (2) be output winding around
Line segment；The high-voltage winding is wound with the first winding (6) around line segment；The output winding is wound with the second winding on line segment
(5)；
It is arranged on the positive insulating spacer of the O-shaped magnetic core (2) (3) jagged；And notch (31) position of all insulating spacers (3)
In on the same annulus；Winding fixing piece (4) are installed on the notch (31)；Winding fixing piece (4) the upper surface setting
There are conductive sheet (41)；The winding fixing piece changed in turn coil and the winding limiting slot being located in winding limiting slot in the winding
(4) conductive sheet (41) electrical connection；
Annular convex platform (9) are provided on the front of the shell (7)；The interior of the shell (7) intracavitary is provided with and annular convex platform
(9) corresponding annular groove (92)；The lower semisection of annular convex platform (9) on the front of the shell (7) is provided with connection annular
The semi-circular through slot (91) of groove (92)；
Annular groove (92) bottom is provided with annular insulating mat piece (14)；Conduct piece is provided in the annular groove (92)
(16)；Described conduct piece (16) one end is provided with insulation connecting column (15)；One end of insulation connecting column (15) sequentially passes through
Annular insulating mat piece (14), semi-circular through slot (91), and it is provided with insulation top cap (11)；On the inner wall of the annular groove (92)
It is provided with electrical piece；The conduct piece (16) contacts with electrical piece, and is electrically connected；
There are two output wiring terminal (10) for setting on the outer surface of shell (7) lower end；One output wiring terminal (10) and logical
Electric piece electrical connection；Another output wiring terminal (10) is electrically connected with one end of the second winding (5)；
Shell (7) back has opening；Institute's shell (7) covers O-shaped magnetic core (2)；The conduct piece (16) is fixed with winding
The conductive sheet (41) of part (4) upper surface contacts；Rear baffle (13) are provided at shell (7) open back；The rear baffle
(13) closed shell (7)；High tension terminal (8) are provided with above the shell (7)；The high tension terminal (8) and first
Winding (6) electrical connection.
2. the current transformer according to claim 1 for power transmission network potential device, it is characterised in that: the O-shaped magnetic
Core (2) uses iron core.
3. the current transformer according to claim 1 for power transmission network potential device, it is characterised in that: the high-voltage connecting
The outer surface of terminal (8) is set with high-pressure insulating ring.
4. the current transformer according to claim 1 for power transmission network potential device, it is characterised in that: the conduct piece
It is made using copper.
5. the current transformer according to claim 4 for power transmission network potential device, it is characterised in that: the winding is solid
Determine part (4) and adopt to be made of plastic, the conductive sheet (41) on the winding fixing piece (4) is embedded in the upper table of winding fixing piece (4)
Face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920449511.XU CN209571322U (en) | 2019-04-04 | 2019-04-04 | Current transformer for power transmission network potential device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920449511.XU CN209571322U (en) | 2019-04-04 | 2019-04-04 | Current transformer for power transmission network potential device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209571322U true CN209571322U (en) | 2019-11-01 |
Family
ID=68335960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920449511.XU Active CN209571322U (en) | 2019-04-04 | 2019-04-04 | Current transformer for power transmission network potential device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209571322U (en) |
-
2019
- 2019-04-04 CN CN201920449511.XU patent/CN209571322U/en active Active
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