CN201340799Y - Anti-pollution type high voltage low current transformer - Google Patents
Anti-pollution type high voltage low current transformer Download PDFInfo
- Publication number
- CN201340799Y CN201340799Y CNU2009201015174U CN200920101517U CN201340799Y CN 201340799 Y CN201340799 Y CN 201340799Y CN U2009201015174 U CNU2009201015174 U CN U2009201015174U CN 200920101517 U CN200920101517 U CN 200920101517U CN 201340799 Y CN201340799 Y CN 201340799Y
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- high voltage
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- oil conservator
- current transformer
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Abstract
The utility model provides an anti-pollution type high voltage low current transformer, and relates to the technical field of current transformers. The anti-pollution type high voltage low current transformer comprises an expander, an oil conservator, a transformer body, a porcelain bushing and a base, and forms an inverted structure; wherein a secondary winding is arranged in the oil conservator at the upper part of the product; main insulation is wrapped outside the secondary winding; and a primary conductor is a cable wire and is uniformly winded outside the main insulation to form a multi-circle structure. The utility model has the positive effects that the problems existed in the prior art are overcome; by adopting the technical scheme, the iron core volume is greatly reduced, the product precision is improved, the anti-pollution capacity of the product is reinforced, and the special requirements of users are met; the high voltage low current transformer has the characteristics of simple structure, small volume of the iron core, material saving, high precision of product, excellent performance, strong anti-pollution capacity, convenient use and safety, and is particularly applicable to current transformers with unbalance current for the dual-star neutral line in the filter capacitor.
Description
Technical field
The utility model belongs to the instrument transformer technical field, is specifically related to filtering capacitor double star neutral line unsymmetrical current Current Transformer.
Background technology
This kind current transformer generally is used for electrolytic aluminium factory monitoring filtering capacitor double star neutral line unsymmetrical current and uses.Its unsymmetrical current is very little, and rated current only is 2.5-5A, but voltage is very high, is 110kV.Because seriously polluted, the anti-filthy ability of requirement is high especially again, and is antifouling for exceeding the V level that GB requires.Because of current ratio is too little, and permissible accuracy is 0.2 grade, can't meet the demands according to a conventional method.
Summary of the invention
The purpose of this utility model provides a kind of anti-fouling type high voltage-small current instrument transformer, have simple in structure, core volume is little, save material, product precision height, the anti-filthy ability characteristics strong, easy to use, safe of product.Be particularly useful for filtering capacitor double star neutral line unsymmetrical current Current Transformer.
Main technical schemes of the present utility model is: a kind of anti-fouling type high voltage-small current instrument transformer, comprise expander, oil conservator, device body, insulator and base, become inverted structure, it is characterized in that secondary winding in the oil conservator of product top, secondary winding holds main insulation outward; Primary Conductor is a cable, evenly around the outside of main insulation, is multi-turn structure.
Described oil conservator is a welded-steel plate construction.
The fixed structure of described device body is welding " L " iron on the cabinet wall of oil conservator, with screw rod the device body is held out against.
Good effect of the present utility model is: overcome the problem that prior art exists, because the utility model has been taked above technical scheme, and core volume is greatly reduced, and has improved the product precision, strengthen the anti-filthy ability of product, satisfied user's specific (special) requirements.Have simple in structure, core volume is little, save material, product precision height, superior performance, the anti-filthy ability characteristics strong, easy to use, safe of product.Be particularly useful for filtering capacitor double star neutral line unsymmetrical current Current Transformer, antifouling rank can reach the 4-5 level.
Be described further below in conjunction with drawings and Examples, but not as to qualification of the present utility model.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Among Fig. 1, the implication of each label is: 1---expander, 2---device body, 3---" L " iron, 4---screw rod, 5---oil conservator, 6---insulator, 7---base, two primary connection terminals of P1, P2---current transformer.
Embodiment
Referring to Fig. 1, this anti-fouling type high voltage-small current instrument transformer comprises expander 1, oil conservator 5, device body 2, insulator 6 and base 7, becomes inverted structure, and secondary winding is in the oil conservator of product top, and secondary winding holds main insulation outward; Primary Conductor is a cable, evenly around the outside of main insulation, is multi-turn structure.The Primary Conductor of multiturn has improved the number of ampere turns of product, and save material, improve precision, anti-filthy ability is strong.Oil conservator 5 is a welded-steel plate construction.The fixed structure of device body 2 is welding " L " iron 3 on the cabinet wall of oil conservator 5, with screw rod 4 device body 2 is held out against, and the preventer body moves.Base plays a supportive role.
The technical scheme that the utility model is taked is that product design is become inverted structure, and secondary winding is in the oil conservator of product top, and secondary winding holds main insulation outward.Its Primary Conductor is a cable, Primary Conductor evenly around main insulation wrapping outside, by improving the number of turn of Primary Conductor, is improved the number of ampere turns of product like this, make the number of ampere turns of product reach 1000 ampere-turns, can realize the purpose that reduces core dimensions, raising product precision, reduces product cost.Because of rated primary current is too little, do not consider the problem of temperature rise, so oil conservator is designed to welded-steel plate construction without the cast aluminium alloy oil conservator.The fixed form of device body is welding " L " iron on the cabinet wall, with screw rod the device body is held out against.The particular design insulator is increased insulator, strengthens the specific (special) requirements that creepage distance satisfies the user.
The utility model cardinal principle is, because of the product rated primary current is too little, and 2.5-5A only, if do not improve the Primary Conductor number of turn, the product error is difficult to reach standard-required, small product size can be big to unacceptable degree.Under the constant situation of rated primary current, improve the number of ampere turns of product by the number of turn that improves Primary Conductor, small product size can greatly reduce, and has saved raw material, can satisfy error requirements again.Product is made inverted structure, Primary Conductor can be continuously around the outside of secondary winding and main insulation, easy-to-connect.If adopt positive vertical structure, Primary Conductor will disconnect before the wrapping of product main insulation, is connecting again after the wrapping, and too many because of the number of turn, wiring is very inconvenient, and easy wrong.
Claims (3)
1, a kind of anti-fouling type high voltage-small current instrument transformer comprises expander (1), oil conservator (5), device body (2), insulator (6) and base (7), becomes inverted structure, it is characterized in that secondary winding in the oil conservator of product top, and secondary winding holds main insulation outward; Primary Conductor is a cable, evenly around the outside of main insulation, is multi-turn structure.
2, anti-fouling type high voltage-small current instrument transformer according to claim 1 is characterized in that oil conservator (5) is a welded-steel plate construction.
3, anti-fouling type high voltage-small current instrument transformer according to claim 2, the fixed structure that it is characterized in that device body (2) holds out against device body (2) with screw rod (4) for welding " L " iron (3) on the cabinet wall of oil conservator (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201015174U CN201340799Y (en) | 2009-02-13 | 2009-02-13 | Anti-pollution type high voltage low current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201015174U CN201340799Y (en) | 2009-02-13 | 2009-02-13 | Anti-pollution type high voltage low current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201340799Y true CN201340799Y (en) | 2009-11-04 |
Family
ID=41236342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201015174U Expired - Fee Related CN201340799Y (en) | 2009-02-13 | 2009-02-13 | Anti-pollution type high voltage low current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201340799Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064014A (en) * | 2010-12-06 | 2011-05-18 | 保定天威集团有限公司 | Multi-turn inverted current transformer |
| CN115020072A (en) * | 2022-06-29 | 2022-09-06 | 山东泰开互感器有限公司 | High-reliability explosion-proof oil-immersed current transformer |
-
2009
- 2009-02-13 CN CNU2009201015174U patent/CN201340799Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064014A (en) * | 2010-12-06 | 2011-05-18 | 保定天威集团有限公司 | Multi-turn inverted current transformer |
| CN115020072A (en) * | 2022-06-29 | 2022-09-06 | 山东泰开互感器有限公司 | High-reliability explosion-proof oil-immersed current transformer |
| CN115020072B (en) * | 2022-06-29 | 2023-11-03 | 山东泰开互感器有限公司 | High-reliability explosion-proof oil-immersed current transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Baoding Tianwei Transformer Co., Ltd. Assignor: Baoding Tianwei Group Co., Ltd. Contract record no.: 2011130000062 Denomination of utility model: Anti-pollution type high voltage low current transformer Granted publication date: 20091104 License type: Exclusive License Record date: 20110610 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091104 Termination date: 20130213 |