CN203150374U - Novel current transformer - Google Patents
Novel current transformer Download PDFInfo
- Publication number
- CN203150374U CN203150374U CN 201320145032 CN201320145032U CN203150374U CN 203150374 U CN203150374 U CN 203150374U CN 201320145032 CN201320145032 CN 201320145032 CN 201320145032 U CN201320145032 U CN 201320145032U CN 203150374 U CN203150374 U CN 203150374U
- Authority
- CN
- China
- Prior art keywords
- iron core
- current transformer
- steel sheet
- air gap
- insulating layers
- 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 an accessory device of an electric system test tool, and particularly belongs to a novel current transformer. The novel current transformer is composed of a circular iron core (4), coils (5) wound on the iron core and an insulation layer, an air gap (3) is formed in the iron core, and filler is filled into the air gap. The insulating layer is divided into inner insulating layers (8) and outer insulating layers (6), the inner insulating layers cover the periphery of the iron core, and the outer insulating layers cover the periphery of the coils. The novel current transformer is characterized in that the inner insulating layers are bundled up with steel sheet belts (2), buffer layers (7) are arranged between the steel sheet belts (2) and the coils, and lock catches (1) are arranged at one ends of the steel sheet belts and are matched with lock holes (9) at the other ends of the steel sheet belts. The tightness degree of bundling of the iron core is adjusted by adjusting the positions of the steel sheet belts, then the size of the air gap is changed to obtain an ideal performance index, and the novel current transformer has the advantages of being high in the rate of finished products and strong in product stability.
Description
Technical field
The utility model relates to a kind of auxiliary equipment of electric power system testing tool, belongs to a kind of New type of current instrument transformer especially.
Background technology
Along with the continuous rising of voltage class of electric power system, also in continuous increase, wherein TPY level Current Transformer for Transient Protection is as the important link of transient protection to the demand of transient protection in electric power system, and demand is also in continuous rising.Need in annular core, add one or more air gaps in process of production, fill air gap with non-magnet material again, with some stainless steel bands the iron core that cuts be tied up welding then, again according to specification requirement coiling, wrapping external insulation layer.In case welding is finished, just can't regulate again, the current transformer air gap is generally shorter, therefore tie up the tiny difference that very easily causes gas length between many iron core individualities in welding and the later stage coil manufacturing process at iron core, and air gap length is directly connected to important performances such as the transient error, excitation property of current transformer, tiny difference in length also can cause bigger performance difference, therefore unstable properties is arranged, measures inaccurate defective.
Summary of the invention
The purpose of this utility model namely is to provide a kind of New type of current instrument transformer, to reach the purpose that improves product stability and measuring accuracy.
New type of current instrument transformer provided by the utility model is made of annular core and the coil and the insulating barrier that are wrapped on the iron core, and iron core is provided with air gap, and inserts is arranged in the air gap; Insulating barrier is divided into inner insulating layer and external insulation layer, the peripheral parcel of iron core inner insulating layer, coil periphery parcel external insulation layer; It is characterized in that, tied up the steel disc band at inner insulating layer, be provided with resilient coating between steel disc band and the coil, an end is provided with snap close on the described steel disc band, cooperates with the lockhole of the other end.
The utility model in use, adjust the elasticity that iron core is tied up by the position of regulating steel disc button with lock, change the size of air gap then, to obtain the perfect performance index, guarantee that the performance with batch instrument transformer is consistent, have rate of finished products height, good effect that product stability is strong.
Description of drawings
Accompanying drawing partly discloses specific embodiment of the utility model, wherein,
Fig. 1, the utility model structural representation;
Fig. 2, partial enlarged drawing of the present utility model;
Fig. 3, steel disc button with lock cooperates schematic diagram with lockhole.
Embodiment
As shown in the figure, the utility model is made of coil 5 and insulating barrier on annular core 4.Iron core is provided with one or more air gaps 3, and inserts is arranged in the air gap, is non-magnetic conduction substance, as sheet glass etc.The iron core outside is inner insulating layer 8, and steel disc band 2 is banded on the inner insulating layer with the form of secured core, is provided with resilient coating 7 between steel disc band and the coil, and coil is provided with external insulation layer 6 outward.
As shown in Figure 3, the steel disc band is provided with in order to the snap close 1 of regulating degree of tightness, and the lockhole 9 that becomes row to arrange with the other end cooperates.Snap close can be realized like this with cooperating of lockhole: there is a screw rod snap close inside, and the lock tooth is arranged on it, can snap in the lockhole of steel disc band, and during rotating screw bolt, drive the lock tooth and snap in the different lockhole of steel disc band, thus the elasticity of regulating the steel disc band.Because above-mentioned feature belongs to prior art, so do not do too much explanation.
The utility model is when making, fixing with tying up earlier behind the populated air gap of the iron core of well cutting, wrap up inner insulating layer then, after finishing, the inner insulating layer wrapping puts some bloom bands, concrete quantity is determined by the height of iron core, and the degree of tightness of adjustment steel disc band, and then wrap up certain thickness resilient coating, wrapping finishes the back according to specification requirement coiling, wrapping external insulation layer.After instrument transformer completes, suitably regulate the elasticity of steel disc band again according to testing result, can obtain the desirable index of instrument transformer.
Claims (1)
1. New type of current instrument transformer is made of annular core (4) and the coil (5) and the insulating barrier that are wrapped on the iron core, and iron core is provided with air gap (3), and inserts is arranged in the air gap; Insulating barrier is divided into inner insulating layer (8) and external insulation layer (6), the peripheral parcel of iron core inner insulating layer, coil periphery parcel external insulation layer; It is characterized in that, tied up steel disc band (2) at inner insulating layer, be provided with resilient coating (7) between steel disc band and the coil, an end is provided with snap close (1) on the described steel disc band, cooperates with the lockhole (9) of the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320145032 CN203150374U (en) | 2013-03-27 | 2013-03-27 | Novel current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320145032 CN203150374U (en) | 2013-03-27 | 2013-03-27 | Novel current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203150374U true CN203150374U (en) | 2013-08-21 |
Family
ID=48977883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320145032 Expired - Lifetime CN203150374U (en) | 2013-03-27 | 2013-03-27 | Novel current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203150374U (en) |
-
2013
- 2013-03-27 CN CN 201320145032 patent/CN203150374U/en not_active Expired - Lifetime
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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: SHANDONG HUAXIN ELECTRIC CO., LTD. Free format text: FORMER NAME: RIZHAO HUAXIN ELECTRIC CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 276826 No. 39-12 West Tianjin Road, Rizhao City Development Zone, Shandong Patentee after: SHANDONG HUAXIN ELECTRIC Co.,Ltd. Address before: 276826 No. 39-12 West Tianjin Road, Rizhao City Development Zone, Shandong Patentee before: RIZHAO HUAXIN ELECTRIC Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130821 |