CN206148264U - Can notched zero sequence bar type current transformer - Google Patents
Can notched zero sequence bar type current transformer Download PDFInfo
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- CN206148264U CN206148264U CN201621196802.5U CN201621196802U CN206148264U CN 206148264 U CN206148264 U CN 206148264U CN 201621196802 U CN201621196802 U CN 201621196802U CN 206148264 U CN206148264 U CN 206148264U
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- current transformer
- zero sequence
- unshakable
- type current
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Abstract
The utility model discloses a can notched zero sequence bar type current transformer, including mutual inductor body and the insulating housing of setting outside mutual inductor body, insulating housing is the cuboid of compriseing two semi -circular entities, and the generating line hole sets up at insulating housing's center, and its shape is oval, be equipped with the clearance at two physical seam crossings of semi -circle, be equipped with the boss unshakable in one's determination of symmetry in this clearance, the clearance department of one side is equipped with secondary binding post, and the clearance department of opposite side is equipped with secondary connecting terminal, is equipped with the connection piece on the secondary connecting terminal. Through set up four installation through -holes on insulating housing, set up the inserts in two threaded holes in the insulating housing bottom surface for current transformer's installation possesses two kinds of proprietary modes. Adopt oval -shaped generating line hole, the high tension cable that can make power line is the in -line and arranges and open the nature and pass the generating line hole, need not not tie high tension cable. When the boss unshakable in one's determination that sets up made the final assembly, the contact unshakable in one's determination of two semicircles was more abundant.
Description
Technical field
This utility model be related to it is a kind of can otch zero sequence bus-type current transformer, belong to transformer technical field.
Background technology
The three phase unbalance current of power circuit detection at present is completed using zero sequence bus open-close type current transformer, electricity
The three-phase on line of force road（A phase, B phase, C phase）High tension cable is through zero sequence bus-type current transformer window, bus in isosceles triangle
Window diameter requires larger（Typically >=100mm）, iron core adopts annular, and processing is simple, and its mounting means is substantially also adopted by
It is supported（I.e. with base or base plate）Install.Because the high tension cable section of power circuit is larger, hardness is stronger, in product word
Shape needs certain constraint when installing.In addition supported installation need to have certain bending to the three-phase high-voltage cable of power circuit,
Therefore trouble is installed, versatility is not strong.And existing form of cut or cuts transformer, its secondary winding mode is with restriction, Zhi Neng
Coiling on the iron core of one semicircle, leakage magnetic flux unshakable in one's determination is larger, affects product overall performance.
Utility model content
For the problems referred to above, the purpose of this utility model be to provide it is a kind of can otch zero sequence bus-type current transformer.
To achieve these goals, the technical solution adopted in the utility model is：It is a kind of can otch zero sequence bus-type electricity
Current transformer, including transformer body and it is arranged on the external insulation shell of transformer sheet；The transformer body include it is unshakable in one's determination,
Secondary coil；The insulation shell is provided with secondary wiring terminals, secondary connection terminal and bus endoporus；Secondary in whole connects
Threaded terminal screw, packing ring and spring pad are set on line terminals and secondary connection terminal, it is characterised in that：The insulation shell
The cuboid being made up of two semicircular solids, bus endoporus is arranged on the center of insulation shell, and it is shaped as ellipse；
The seam crossing of two semicircular solids is provided with gap, and symmetrical boss unshakable in one's determination is provided with the gap；The gap location of side is provided with two
Secondary binding post, the gap location of opposite side is provided with secondary connection terminal, and secondary connection terminal is provided with connection sheet.
Used as a preferred version, the upper surface of the insulation shell is provided with four installation through-holes.
Used as a preferred version, the bottom surface of the insulation shell is provided with two inserts with threaded hole.
Used as a preferred version, the iron core is ellipse, is made up of two semicircle iron cores.
Used as a preferred version, the iron core rolls thermally treated dipping and forms using stalloy.
Used as a preferred version, the secondary coil is wound on two semicircle iron cores of iron core, by secondary
The whole coil that connection sheet on connection terminal is connected into.
The utility model has the advantages that：1st, by arranging four installation through-holes on insulation shell, in insulation shell bottom surface
Two inserts with threaded hole are set so that the installation of current transformer possesses two kinds of proprietary modes, i.e. plug-in type and installs or prop up
Formula installation is held, versatility is higher and quick and easy for installation.2nd, using oval bus endoporus, the high-tension electricity of power circuit can be made
Cable arranges nature through bus endoporus in in-line, without constraint high tension cable.3rd, secondary coil is wound on oval iron core
In two semicircular solids, both sides fillet leaves certain interval, and by secondary connection terminal a whole coil is connected into, this
Winding mode maximized can realize secondary coil being uniformly distributed on iron core, advantageously reduce the leakage magnetic flux of iron core, maximum
The electromagnetic performance of the raising product of change.4th, when the boss unshakable in one's determination for arranging makes final assembly, two semicircle contacts unshakable in one's determination are more abundant.
Description of the drawings
Fig. 1 is 3 d effect graph of the present utility model
Fig. 2 is the I portions enlarged drawing of Fig. 1
Fig. 3 is the main view partial sectional view of Fig. 1
In figure：1st, insulation shell, 1-1, installation through-hole, 1-2, screwed hole, 2, transformer body, 2-1, iron core, 2-2, two
Secondary coil, 3, inserts, 4, secondary wiring terminals, 5, secondary connection terminal, 6, bus endoporus, 7, gap, 8, boss unshakable in one's determination, 9, even
Contact pin.
Specific embodiment
In conjunction with accompanying drawing, technology contents of the present utility model are described further.
As shown in Figure 1-Figure 3, can the zero sequence bus-type current transformer of otch include transformer body 2 and being arranged on mutual inductance
The external insulation shell 1 of device sheet；The transformer body 2 includes iron core 2-1, secondary coil 2-2；Set on the insulation shell 1
There are secondary wiring terminals 4, secondary connection terminal 5 and bus endoporus 6.In whole secondary wiring terminals 4 and secondary connection terminal 5
On set threaded terminal screw, packing ring and spring pad.
The cuboid that the insulation shell 1 is made up of two semicircular solids, in the upper surface of insulation shell 1 four are provided with
Individual installation through-hole 1-1, in the bottom surface of insulation shell 1 inserts 3 of two 1-2 with threaded hole is provided with.
Bus endoporus 6 is arranged on the center of insulation shell 1, and it is shaped as ellipse.In the seam of two semicircular solids
Place is provided with gap 7, and in the gap 7 symmetrical boss unshakable in one's determination 8 is provided with；Secondary wiring terminals 4 are provided with the gap 7 of side, it is another
Secondary connection terminal 5 is provided with the gap 7 of side, secondary connection terminal 5 is provided with connection sheet 9.
The 2-1 unshakable in one's determination is ellipse, is made up of two semicircle iron cores, thermally treated dipping is rolled using stalloy and
Into.The secondary coil 2-2 is wound on two semicircle iron cores of 2-1 unshakable in one's determination, by the connection on secondary connection terminal 5
The whole coil that piece 9 is connected into.
Mounting means one：Current transformer is inserted on the high tension cable of prepackage, wherein four installation through-hole 1-1 are inserted into
Fixation on the stud of four fixed dimensions, connection sheet 9 is fixed between two secondary connection terminals 5, secondary connection end
Son 4 is output signal, is assembled into an overall structure；
Mounting means two, current transformer is inserted on the high tension cable of prepackage, and using special fixture four peaces are fixed on
On dress through hole 1-1, connection sheet 9 is fixed between two secondary connection terminals 5, is then being threaded in the inserts 3 of hole 1-2
Insulation shell 1 is fixed in pre-installed position by bolt, secondary wiring terminals 4 are output signal, is assembled into an entirety knot
Structure.
Claims (6)
1. it is a kind of can otch zero sequence bus-type current transformer, including transformer body and be arranged on external exhausted of transformer sheet
Edge housing；The transformer body includes unshakable in one's determination, secondary coil；The insulation shell is provided with secondary wiring terminals, secondary company
Connecting terminal and bus endoporus；Threaded terminal screw, packing ring are set on whole secondary wiring terminals and secondary connection terminal
And spring pad, it is characterised in that：The cuboid that the insulation shell is made up of two semicircular solids, bus endoporus is arranged on
The center of insulation shell, it is shaped as ellipse；Gap is provided with the seam crossing of two semicircular solids, is provided with right in the gap
The boss unshakable in one's determination of title；The gap location of side is provided with secondary wiring terminals, and the gap location of opposite side is provided with secondary connection terminal, secondary
Connection terminal is provided with connection sheet.
2. as claimed in claim 1 can otch zero sequence bus-type current transformer, it is characterised in that：The insulation shell
Upper surface is provided with four installation through-holes.
3. as claimed in claim 1 or 2 can otch zero sequence bus-type current transformer, it is characterised in that：The insulation shell
The bottom surface of body is provided with two inserts with threaded hole.
4. as claimed in claim 1 can otch zero sequence bus-type current transformer, it is characterised in that：It is described unshakable in one's determination for ellipse
Shape, is made up of two semicircle iron cores.
5. as described in claim 1 or 4 can otch zero sequence bus-type current transformer, it is characterised in that：The iron core is adopted
Thermally treated dipping is rolled with stalloy to form.
6. as claimed in claim 1 can otch zero sequence bus-type current transformer, it is characterised in that：The secondary coil is
It is wound on the whole coil that the semicircle iron core of unshakable in one's determination two is upper, connect into by the connection sheet on secondary connection terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621196802.5U CN206148264U (en) | 2016-11-07 | 2016-11-07 | Can notched zero sequence bar type current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621196802.5U CN206148264U (en) | 2016-11-07 | 2016-11-07 | Can notched zero sequence bar type current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206148264U true CN206148264U (en) | 2017-05-03 |
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ID=58624434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621196802.5U Active CN206148264U (en) | 2016-11-07 | 2016-11-07 | Can notched zero sequence bar type current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206148264U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112444756A (en) * | 2020-10-21 | 2021-03-05 | 国网山东省电力公司泰安供电公司 | Low-current ungrounded line selection method based on zero-sequence power-frequency electrical component coupling elliptic distribution characteristics |
-
2016
- 2016-11-07 CN CN201621196802.5U patent/CN206148264U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112444756A (en) * | 2020-10-21 | 2021-03-05 | 国网山东省电力公司泰安供电公司 | Low-current ungrounded line selection method based on zero-sequence power-frequency electrical component coupling elliptic distribution characteristics |
| CN112444756B (en) * | 2020-10-21 | 2022-08-12 | 国网山东省电力公司泰安供电公司 | Low-current ungrounded line selection method based on zero-sequence power-frequency electrical component coupling elliptic distribution characteristics |
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