CN2401978Y - U-shaped outdoor dry-type sleeve current transformer - Google Patents
U-shaped outdoor dry-type sleeve current transformer Download PDFInfo
- Publication number
- CN2401978Y CN2401978Y CN 99249663 CN99249663U CN2401978Y CN 2401978 Y CN2401978 Y CN 2401978Y CN 99249663 CN99249663 CN 99249663 CN 99249663 U CN99249663 U CN 99249663U CN 2401978 Y CN2401978 Y CN 2401978Y
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- CN
- China
- Prior art keywords
- shaped
- union body
- layer
- current transformer
- transformer
- 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
Links
- 238000009413 insulation Methods 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 229920002379 silicone rubber Polymers 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 6
- 238000004804 winding Methods 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 239000003610 charcoal Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
Landscapes
- Transformers For Measuring Instruments (AREA)
Abstract
The utility model relates to an outdoor dry-type sleeve pipe current transformer of U-shaped. The transformer bushing is mainly characterized in that the bushing body is U-shaped, the transformer is arranged on the bushing body at the lower part of the U-shaped bushing body, and the lower part of the U-shaped bushing body is arranged in the box body. The utility model is suitable for an independent type current transformer of 110KV outdoor transformer substation has multiple uses such as electric energy measurement, current measurement, relay protection, electrical monitoring.
Description
The utility model relates to a kind of outdoor dry type casing current transformer.
It is a kind of free-standing current transformer of the 110KV of being applicable to outdoor substation, has multiple uses such as electric energy metrical, current measurement, relaying protection, electric monitoring.So-called dry type is for oil-immersed current transformer.The oil immersed type instrument transformer that is widely used at present adopts figure of eight structure, is made up of the separate unit mutual inductor, change single, the employing paper oil insulation, heaviness, the traffic-induced damage probability is big, and directly contacts operation troubles rate height with a sub-high pressure.Because of being subjected to the restriction of its " porcelain oversheath ", " oil-filled " structure, need make regular preventive trial.Have ageing of insulation, dielectric loss increases, and oiling is defective, and heating burns out blast and anti-pollution flashover ability, problems such as oil impregnate, leakage of oil, maintenance work complexity.The patent No. by my invention is that 96234605.5 open air is in the formula current transformer, sleeve pipe adopts along the face technology of pressure equalization, effectively improve Electric Field Distribution, improved creeping discharge voltage, oversheath adopts the silicon rubber composite insulating material, prevent that effectively suspended compound from polluting, high temperature resistant, acid-alkali-corrosive-resisting has good hydrophobic performance and anti-electric charcoal trace and uvioresistant and ageing resistance, and creepage distance is big, and anti-pollution flashover ability is strong.Because of adopting rectilinear structure, it is oversize too big that product seems, area takes up room.
The U-shaped outdoor dry type current transformer that provides a kind of area that takes up space little is provided the purpose of this utility model.
The technical solution of the utility model is: it is grouped into by union body, instrument transformer, casing and wire connecting portion, union body is a sandwich construction, outermost layer is a silicon rubber compound inslation oversheath, the second layer is the capacitor voltage equalizing layer, the 3rd layer is the semiconducting insulation transition zone, the 4th layer is metal catheter, be the body that dams in the metal catheter, be provided with at the two ends of union body and all press rain cover and terminals, also be provided with full skirt on the union body, it is characterized in that: union body is a U-shaped, and instrument transformer is arranged on the union body of U-shaped union body bottom, and the bottom of U-shaped union body is arranged in the casing.
For protecting tie one time, between the both ends of the surface of U-shaped union body, be provided with connecting rod.
The utility model is owing to change the linear union body into the U-shaped union body, dwindled spatial area greatly, a winding of the body that dams in the metal catheter can be made up of a circle or number circle, changes and can use by serial or parallel connection according to the user, the use during for windings in series or parallel connection of tie.
Fig. 1 is the utility model schematic diagram;
Fig. 2 is Fig. 1 left view.
The utility model is described in further detail below in conjunction with accompanying drawing.
The utility model is grouped into by union body 16, instrument transformer 8, casing 12 and wire connecting portion, union body is a U-shaped, and sandwich construction, instrument transformer are arranged on the union body of U-shaped union body bottom, the cartridge casing body that instrument transformer is set is gone in the casing, and union body is fixed on the Box Cover.The top of union body is provided with full skirt 2.
Once passing in and out line links to each other with the carrying object 7 of a sleeve portion by primary connection end 1, union body 16 outermost layers are silicon rubber oversheath 3, the second layer is a capacitor voltage equalizing layer 4, the 3rd layer is semiconductive insulation transition zone 5, the 4th layer is metal catheter 6, innermost layer carrying object 7 is made up of the flat copper body of a circle or number circle turn-to-turn mutually insulated as a winding of instrument transformer, changes and can use by serial or parallel connection according to the user.13 of ties use for windings in series or when in parallel.Coupling bar 14 also plays the effect of fixing " U " shape structure simultaneously as the outer protection of a tie 13.All press rain cover 15 to play a part to avoid producing corona and prevent that rainwater from entering in " U " shape pipe.Instrument transformer 8 is isolated by union body 16 and primary line, and is safe and reliable.Be generally three or four, all be contained in the casing 12.The secondary line of instrument transformer 8 connects with the outside tie cable of introducing from secondary incoming line 10 by secondary connection end 9.Secondary connection box 11 can be pulled down, and is convenient to wiring.
A sleeve pipe of the present utility model adopts along the face technology of pressure equalization, effectively improves Electric Field Distribution, has improved creeping discharge voltage; The silicon rubber composite insulating material that oversheath adopts can prevent effectively that suspended compound from polluting, and high temperature resistant, acid-alkali-corrosive-resisting has good hydrophobic performance and anti-electric charcoal trace, uvioresistant, ageing resistance.Creepage distance is big, and anti-pollution flashover ability is strong, and it is anti-filthy to reach III or IV level, and the undesirable mutual electromagnetic inductance part is made up of many current transformers, and it is inferior to have multiple class of accuracies such as 0.2 grade, 0.5 grade, 10P level, 5P level respectively; It utilizes the insulation of a sleeve portion itself and primary line to isolate, and is safe and reliable.This product does not have oil, no porcelain, no gas, and can the primary line serial or parallel connection be used according to user's needs, obtains multiple current ratio, thereby realizes big capacity, little variation (minimum 50/5).This product adopts a penetration type structure and soft location is not fastening does not on an empty stomach close, thereby has good moving, thermal stability and perfect common, interchangeability.
Claims (2)
1, a kind of U-shaped outdoor dry type casing current transformer, by union body, instrument transformer, casing and wire connecting portion are grouped into, union body is a sandwich construction, outermost layer is a silicon rubber compound inslation oversheath, the second layer is the capacitor voltage equalizing layer, the 3rd layer is the semiconducting insulation transition zone, the 4th layer is metal catheter, be the body that dams in the metal catheter, be provided with at the two ends of union body and all press rain cover and terminals, also be provided with full skirt on the union body, it is characterized in that: union body is a U-shaped, instrument transformer is arranged on the union body of U-shaped union body bottom, and the bottom of U-shaped union body is arranged in the casing.
2, U-shaped outdoor dry type casing current transformer according to claim 1 is characterized in that: be provided with connecting rod between the both ends of the surface of U-shaped union body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99249663 CN2401978Y (en) | 1999-11-04 | 1999-11-04 | U-shaped outdoor dry-type sleeve current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99249663 CN2401978Y (en) | 1999-11-04 | 1999-11-04 | U-shaped outdoor dry-type sleeve current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2401978Y true CN2401978Y (en) | 2000-10-18 |
Family
ID=34034605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99249663 Expired - Fee Related CN2401978Y (en) | 1999-11-04 | 1999-11-04 | U-shaped outdoor dry-type sleeve current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2401978Y (en) |
-
1999
- 1999-11-04 CN CN 99249663 patent/CN2401978Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |