CN102005294A - Small-size current transformer - Google Patents
Small-size current transformer Download PDFInfo
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- CN102005294A CN102005294A CN2010105362335A CN201010536233A CN102005294A CN 102005294 A CN102005294 A CN 102005294A CN 2010105362335 A CN2010105362335 A CN 2010105362335A CN 201010536233 A CN201010536233 A CN 201010536233A CN 102005294 A CN102005294 A CN 102005294A
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- secondary coil
- coil
- current transformer
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Abstract
The invention relates to the field of power transformation, in particular to a small-size current transformer. The small-size current transformer comprises a P2 connecting terminal, a primary coil, secondary coils, a P1 connecting terminal and an insert. The P1 connecting terminal of the small-size current transformer is welded with a U-shaped transition panel to connect the primary coil. The primary coil passes through the secondary coils and is welded with the P2 connecting terminal after fulfilling the number of turns. Each secondary coil is of a circular structure and three secondary coils are arranged in the shape like a Chinese character 'Ping', wherein the right secondary coil and the left secondary coil are arranged horizontally, and the lower secondary coil, the right secondary coil and the left secondary coil are vertical to one another; and the secondary coils are uniformly wound by a varnished wire on an iron core. The outgoing lines of the secondary coils are respectively welded on the insert according to polarity and the terminal identifier of the secondary outgoing line is determined according to winding quantity and transformation ratio condition. Epoxy resin is primarily fully-closed poured in the current transformer.
Description
Technical field
The present invention relates to the power transformation field, relate to a kind of small current instrument transformer specifically.
Background technology
The current transformer that uses in switch cubicle at present takies bigger space because the excessive switch cubicle volume that causes of its volume is bigger.This mainly is unreasonable by arranging of the inner iron core of current transformer position, and the space can not rationally utilize caused.Simultaneously, similar current transformer product mostly is semi-closed structure, semi-enclosed current transformer since iron core leak outside, simultaneously also will the brushing semiconductor varnish, leakage field is big, partial discharge is not up to standard, and shortened the useful life of product greatly.Therefore the technical problem that needs a kind of new small-sized totally-enclosed instrument transformer of development to exist with solution.
Summary of the invention
Defective in view of prior art exists the objective of the invention is to provide a kind of small current instrument transformer.Solve the partial discharge problem of current transformer, improve the useful life of current transformer.Reduce the loss of raw material, satisfy the specific requirement of user the product miniaturization.
The technical solution adopted for the present invention to solve the technical problems is: a kind of small current instrument transformer comprises P2 binding post, primary winding, secondary coil, P1 binding post and inserts.The P1 binding post of described small current instrument transformer welding U type rebound connects primary winding, and primary winding passes secondary coil, meet the punching number of turn after, be welded on the P2 binding post; Secondary coil is a circular ring, and three secondary coils are Chinese character pin-shaped arranges, wherein right secondary coil and the second from left time coil horizontal positioned, following secondary coil and right secondary coil and the vertical placement mutually of the second from left time coil; Secondary coil is made of on iron core the enamelled wire uniform winding, and the outlet of secondary coil is welded on the inserts respectively according to polarity and according to winding quantity and no-load voltage ratio situation, determines secondary outlet terminal sign; The once totally-enclosed casting epoxy resin in current transformer inside.
The invention has the beneficial effects as follows a kind of small current instrument transformer, comprise P2 binding post, primary winding, secondary coil, P1 binding post and inserts.The P1 binding post of described small current instrument transformer welding U type rebound connects primary winding, and primary winding passes secondary coil, meet the punching number of turn after, be welded on the P2 binding post; Secondary coil is a circular ring, and three secondary coils are Chinese character pin-shaped arranges, wherein right secondary coil and the second from left time coil horizontal positioned, following secondary coil and right secondary coil and the vertical placement mutually of the second from left time coil; Secondary coil is made of on iron core the enamelled wire uniform winding, and the outlet of secondary coil is welded on the inserts respectively according to polarity and according to winding quantity and no-load voltage ratio situation, determines secondary outlet terminal sign; The once totally-enclosed casting epoxy resin in current transformer inside.This current transformer be designed to Totally-enclosed-type, improved semi-enclosed drawback, improved the useful life of current transformer greatly.The iron core of described current transformer is Chinese character pin-shaped layout, and even electric field has solved the partial discharge problem.Simultaneously, Chinese character pin-shaped layout is saved the space, has reduced the loss of raw material, has reduced the volume of current transformer, satisfies the specific requirement of user to the product miniaturization.
Description of drawings
Fig. 1 is a main pseudosection of the present invention;
Fig. 2 is a side-looking part sectioned view of the present invention;
Fig. 3 is a top plan view of the present invention;
The Reference numeral of Fig. 1, Fig. 2 and Fig. 3 is as follows: P2 binding post 1; Primary winding 2; Secondary coil 3, right secondary coil 3a, following secondary coil 3b, the second from left time coil 3c; Epoxy resin 4; Binding post 5; Inserts 6; Outlet 7.
Embodiment
Figure 1 shows that the main pseudosection of small current instrument transformer.This small current instrument transformer comprises P2 binding post 1, primary winding 2, secondary coil 3, P1 binding post 5 and inserts 6.The P1 binding post 5 welding U type rebounds of described small current instrument transformer connect primary windings 2, and primary winding 2 passes secondary coil 3, meet the punching number of turn after, be welded on the P2 binding post 1; Three secondary coils 3 are Chinese character pin-shaped and arrange.
Fig. 2 is a side-looking part sectioned view of the present invention.The outlet 7 of secondary coil 3 is welded on the inserts 6 respectively according to polarity and according to winding quantity and no-load voltage ratio situation, determines secondary outlet terminal sign; The inner once-cast epoxy resin 4 of current transformer.
Fig. 3 is a top plan view of the present invention.Secondary coil 3 is a circular ring, right secondary coil 3a and the second from left time coil 3c horizontal positioned, and following secondary coil 3b and right secondary coil 3a and the second from left time coil 3c vertical placement mutually are Chinese character pin-shaped and arrange.
Claims (1)
1. small current instrument transformer, comprise P2 binding post (1), primary winding (2), secondary coil (3), P1 binding post (5) and inserts (6), it is characterized in that: P1 binding post (5) the welding U type rebound of described small current instrument transformer connects primary winding (2), primary winding (2) passes secondary coil (3), after meeting the punching number of turn, be welded on the P2 binding post (1); Secondary coil (3) is a circular ring, three secondary coils (3) are Chinese character pin-shaped and arrange, wherein right secondary coil (3a) and the second from left time coil (3c) horizontal positioned, following secondary coil (3b) and right secondary coil (3a) and the vertical placement mutually of the second from left time coil (3c); Secondary coil (3) is made of on iron core the enamelled wire uniform winding, and the outlet (7) of secondary coil (3) is welded on respectively on the inserts (6) and according to winding quantity and no-load voltage ratio situation according to polarity, determines secondary outlet terminal sign; The once totally-enclosed casting epoxy resin in current transformer inside (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010536233.5A CN102005294B (en) | 2010-11-09 | 2010-11-09 | A kind of shape small size current mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010536233.5A CN102005294B (en) | 2010-11-09 | 2010-11-09 | A kind of shape small size current mutual inductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102005294A true CN102005294A (en) | 2011-04-06 |
| CN102005294B CN102005294B (en) | 2015-08-19 |
Family
ID=43812565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010536233.5A Active CN102005294B (en) | 2010-11-09 | 2010-11-09 | A kind of shape small size current mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102005294B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914023A (en) * | 2016-05-18 | 2016-08-31 | 广西西变变电设备有限公司 | Transformer for outdoor high-voltage vacuum circuit breaker and assembly method of transformer |
| CN107167068A (en) * | 2017-04-26 | 2017-09-15 | 武汉天富海科技发展有限公司 | A kind of test system for obtaining motion body position |
| CN112201471A (en) * | 2020-11-03 | 2021-01-08 | 江苏靖江互感器股份有限公司 | Manufacturing process of medium-voltage epoxy pouring type current transformer coil |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB833364A (en) * | 1955-07-18 | 1960-04-21 | Gen Electric | Improvements in and relating to high voltage current transformers |
| CN2072722U (en) * | 1990-04-17 | 1991-03-06 | 黑龙江省穆棱电焊机厂 | Stereoscopic radiation type three-phase arc welding transformer |
| CN201036151Y (en) * | 2007-04-30 | 2008-03-12 | 大连北方互感器有限公司 | Backbone type totally-enclosed current mutual inductor |
| CN201219064Y (en) * | 2008-03-12 | 2009-04-08 | 力迅电通科技（北京）有限公司 | Energy-saving triangular transformer |
| CN201859769U (en) * | 2010-11-09 | 2011-06-08 | 大连华亿电力电器有限公司 | Full-closed current transformer |
-
2010
- 2010-11-09 CN CN201010536233.5A patent/CN102005294B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB833364A (en) * | 1955-07-18 | 1960-04-21 | Gen Electric | Improvements in and relating to high voltage current transformers |
| CN2072722U (en) * | 1990-04-17 | 1991-03-06 | 黑龙江省穆棱电焊机厂 | Stereoscopic radiation type three-phase arc welding transformer |
| CN201036151Y (en) * | 2007-04-30 | 2008-03-12 | 大连北方互感器有限公司 | Backbone type totally-enclosed current mutual inductor |
| CN201219064Y (en) * | 2008-03-12 | 2009-04-08 | 力迅电通科技（北京）有限公司 | Energy-saving triangular transformer |
| CN201859769U (en) * | 2010-11-09 | 2011-06-08 | 大连华亿电力电器有限公司 | Full-closed current transformer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105914023A (en) * | 2016-05-18 | 2016-08-31 | 广西西变变电设备有限公司 | Transformer for outdoor high-voltage vacuum circuit breaker and assembly method of transformer |
| CN105914023B (en) * | 2016-05-18 | 2017-09-26 | 广西西变变电设备有限公司 | A kind of outdoor high-voltage vacuum breaker transformer and its assemble method |
| CN107167068A (en) * | 2017-04-26 | 2017-09-15 | 武汉天富海科技发展有限公司 | A kind of test system for obtaining motion body position |
| CN112201471A (en) * | 2020-11-03 | 2021-01-08 | 江苏靖江互感器股份有限公司 | Manufacturing process of medium-voltage epoxy pouring type current transformer coil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102005294B (en) | 2015-08-19 |
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