CN2413353Y - Zero-sequence current transformer - Google Patents
Zero-sequence current transformer Download PDFInfo
- Publication number
- CN2413353Y CN2413353Y CN 00219667 CN00219667U CN2413353Y CN 2413353 Y CN2413353 Y CN 2413353Y CN 00219667 CN00219667 CN 00219667 CN 00219667 U CN00219667 U CN 00219667U CN 2413353 Y CN2413353 Y CN 2413353Y
- Authority
- CN
- China
- Prior art keywords
- shielding layer
- iron core
- annular core
- outer shielding
- sequence current
- 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 - Lifetime
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Abstract
The utility model relates to a zero sequence current transformer for a leak breaker. The utility model comprises an iron core, an insulating case, a coil winding, an inner shielding layer, an outer shielding layer, side shielding plates, etc., wherein the insulating case is arranged outside the iron core; the coil winding is wound around the insulating case; the inner shielding layer and the outer shielding layer are annular high permeability alloy sheets formed by rolling; the inner shielding layer is arranged in an inner annular ring of the iron core; the outer shielding layer is sheathed on an outer annular ring of the iron core; the inner shielding layer, the outer shielding layer and the iron core are stuck by adhesives; the side shielding plates are pasted on a left side and a right side of a member composed of the inner shielding layer, the outer shielding layer and the coil winding of the iron core. The utility model has the advantages of simple structure, low cost, convenient and fast manufacture, short periodicity, small size, favorable shielding property, etc.
Description
The utility model relates to the zero sequence current mutual inductor that a kind of residual current circuit breaker is used.
Existing zero sequence current mutual inductor, be by iron core, coil, barricade, insulation crust is formed, coil twines around the outside insulating resin that dashes the iron core of being made up of the silicon steel plate laminated body of looping pit, with the cross section of iron plate drawing is the both sides that the ring shielding plate of コ font is configured in iron core Face to face, further will be by being configured in its both sides along dashing the barricade forms by the silicon steel plate laminated body of annular perforations, these component parts all are arranged in the ring-type insulation crust that the lid of main body that its cross section that is become by the resin integral die is the コ font and its peristome of embedding forms.In said structure, the barricade that instrument transformer adopted mainly is to have the silicon steel plate of looping pit to be formed by stacking by some dashing, and these silicon steel plates must be heat-treated before stack, therefore make this product have following defective: at first, consider factors such as Technology for Heating Processing complexity, Equipment for Heating Processing cost an arm and a leg, so generally its factory that Equipment for Heating Processing is arranged that is issued to counterpart is carried out outer processing, so just relatively prolonged the production cycle of product, improved the cost of product; Secondly, in the process of making instrument transformer, need some silicon steel plates are stacked up difficulty and speed when therefore having increased the product assembling; In addition, in order to shield fully from leakage field next in the primary conductor of iron core, the thickness of barricade must be enough big, and this just makes the axial dimension of instrument transformer become big, thereby exists the problem that influences the residual current circuit breaker miniaturization.
The purpose of this utility model be to provide a kind of simple in structure, cost is low, easy to make quick again, with short production cycle, volume is little, the zero sequence current mutual inductor of advantages of good shielding performance.
The purpose of this utility model is achieved like this, a kind of zero sequence current mutual inductor, comprise annular core 4, be configured in the insulation casing 3 in annular core 4 outsides Face to face, 8, be wrapped in the outside insulation casing 3 of annular core 4, coil windings 7 around 8 and in, outer shielding layer 6,2 and side barricade 1,5 compositions such as grade, in described, outer shielding layer 6,2 for rolling into the hiperloy sheet of ring-type, internal shield 6 is arranged in the interior annular ring of coil windings 7 of annular core 4, outer shielding layer 2 is nested with on the outer ring circle of the coil windings 7 of annular core 4, pass through adhesive cementation, described side barricade 1 between three's the contact-making surface, 5 stick on by interior, outer shielding layer 6,2 and the left side of the member that coil windings 7 is formed of annular core 4, on the right flank.
Below in conjunction with accompanying drawing the utility model is further described below.
Accompanying drawing is a structure diagram of the present utility model.
Inside and outside screen 6,2 of the present utility model all adopts the hiperloy sheet to roll into ring-type, and the hiperloy sheet is generally permalloy.Adopt adhesive bonding rolling between process middle level and the layer.Annular core 4 of the present utility model is for rolling into the hiperloy sheet of ring-type.Side of the present utility model barricade the 1, the 5th is formed by the stickup of hiperloy sheet.
The leakage field that inside and outside screen 6,2 of the present utility model comes from the primary conductor that connects iron core 4 in order to shielding, side barricade 1,5 is in order to the come from the outside magnetic flux in magnetic field of shielding.
The utility model is assembled like this, at first with iron core 4, in, outer shielding layer 6,2 adopt the hiperloy sheet to roll into ring-type, the thickness of its ring-type and size can be decided as required, then its cross section that becomes with the resin integral die is the ring-type insulation casing 3 of コ font, 8 are configured in the both sides of annular core 4 Face to face, coil windings 7 is along the outside insulation casing 3 of annular core 4, twine around 8, again rolled internal shield 6 is placed in the interior annular ring of coil windings 7 of annular core 4, and make between both contact-making surface bonding by adhesive, then again outer shielding layer 2 is nested with on the outer ring circle of the coil windings 7 of annular core 4, and make between both contact-making surface bonding by adhesive, then will be by interior, outer shielding layer 6,2 and the left side of the member that coil windings 7 is formed of annular core 4, right flank is processed into datum level, with the side barricade 1 that has pasted, 5 respectively stickers are on two datum levels, and outer surface that at last will above-mentioned these component parts is coated with the enamelled coating that insulate and gets final product.In this manufacturing process, must guarantee to keep between internal shield 6, coil windings 7, insulation casing 8, iron core 4, outer shielding layer 2 and the side barricade 1,5 sealing of height, in order to avoid leakage field.
The utility model is owing to the screen 6,2 that the inside and outside employing at annular core 4 rolls is shielded, left and right employing side barricade 1,5 is shielded, thereby not only guaranteed the shielding properties of instrument transformer, and since screen can roll voluntarily and form, so that the axial dimension of instrument transformer is controlled, for the miniaturization of circuit breaker is prepared, and can shorten cycle of production, reduce the cost of product, make this product have quick for installation, use and keep in repair advantages such as all very convenient.
Claims (3)
1, a kind of zero sequence current mutual inductor, comprise annular core (4), be configured in the insulation casing (3) in annular core (4) outside Face to face, (8), be wrapped in the outside insulation casing (3) of annular core (4), (8) coil windings on every side (7) and in, outer shielding layer (6), (2) and side barricade (1), (5) composition such as, it is characterized in that described in, outer shielding layer (6), (2) for rolling into the hiperloy sheet of ring-type, internal shield (6) is arranged in the interior annular ring of coil windings (7) of annular core (4), outer shielding layer (2) is nested with on the outer ring circle of the coil windings (7) of annular core (4), pass through adhesive cementation, described side barricade (1) between three's the contact-making surface, (5) stick on by interior, outer shielding layer (6), (2) and the coil windings (7) of annular core (4) form the left side of member, on the right flank.
2, zero sequence current mutual inductor according to claim 1 is characterized in that the hiperloy sheet is a permalloy.
3, zero sequence current mutual inductor according to claim 1 is characterized in that annular core (4) is for rolling into the hiperloy sheet of ring-type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00219667 CN2413353Y (en) | 2000-03-15 | 2000-03-15 | Zero-sequence current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00219667 CN2413353Y (en) | 2000-03-15 | 2000-03-15 | Zero-sequence current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2413353Y true CN2413353Y (en) | 2001-01-03 |
Family
ID=33584832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00219667 Expired - Lifetime CN2413353Y (en) | 2000-03-15 | 2000-03-15 | Zero-sequence current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2413353Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065782A (en) * | 2011-10-24 | 2013-04-24 | 上海电器股份有限公司人民电器厂 | Zero sequence current mutual inductor |
| CN107331498A (en) * | 2016-04-28 | 2017-11-07 | 王大彦 | A kind of toroidal transformer of magnetic shielding cylinder embedding |
| CN107403683A (en) * | 2017-07-29 | 2017-11-28 | 国网江西省电力公司电力科学研究院 | A kind of retractable current transformer using grinding tooth shape open core |
| CN110211787A (en) * | 2019-07-05 | 2019-09-06 | 北京博远寰宇电子科技有限公司 | A kind of open-type residual current transformer and processing technology |
-
2000
- 2000-03-15 CN CN 00219667 patent/CN2413353Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103065782A (en) * | 2011-10-24 | 2013-04-24 | 上海电器股份有限公司人民电器厂 | Zero sequence current mutual inductor |
| CN103065782B (en) * | 2011-10-24 | 2016-05-18 | 上海电器股份有限公司人民电器厂 | A kind of zero sequence current mutual inductor |
| CN107331498A (en) * | 2016-04-28 | 2017-11-07 | 王大彦 | A kind of toroidal transformer of magnetic shielding cylinder embedding |
| CN107403683A (en) * | 2017-07-29 | 2017-11-28 | 国网江西省电力公司电力科学研究院 | A kind of retractable current transformer using grinding tooth shape open core |
| CN110211787A (en) * | 2019-07-05 | 2019-09-06 | 北京博远寰宇电子科技有限公司 | A kind of open-type residual current transformer and processing technology |
| CN110211787B (en) * | 2019-07-05 | 2024-07-09 | 北京博远寰宇电子科技有限公司 | Open type residual current transformer and processing technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHANGSHU SWITCH MANUFACTURING CO., LTD. ( CHANGSHU Free format text: FORMER NAME OR ADDRESS: CHANGSHU SWITCH FACTORY |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Changshu Switchgear Manufacturing Co., Ltd. (Former Changshu Switchgear Factory) Patentee before: Changshu Switch Factory |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20010103 |