CN201036151Y - Backbone type totally-enclosed current mutual inductor - Google Patents
Backbone type totally-enclosed current mutual inductor Download PDFInfo
- Publication number
- CN201036151Y CN201036151Y CNU2007200119406U CN200720011940U CN201036151Y CN 201036151 Y CN201036151 Y CN 201036151Y CN U2007200119406 U CNU2007200119406 U CN U2007200119406U CN 200720011940 U CN200720011940 U CN 200720011940U CN 201036151 Y CN201036151 Y CN 201036151Y
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Abstract
The utility model relates to a column-typed totally-enclosed current transformator, having an integrated structure formed by casting an iron core, a primary winding, a secondary winding, a primary connection terminal and a secondary junction box adopting epoxide resin vacuumly and is installed on a panel base arranged with installation holes integratedly. The primary connection terminals are tabular, wherein, one terminal is arranged vertically and the other terminal is bent and arranged horizontally. Size-spaced umbrella skirts are distributed on the upside of the high-voltage insulator enveloping the primary winding. A directly-cast semicircular wire outlet is arranged on the under-part of the secondary junction box. The cover board of the secondary junction box is made of transparent materials and a cap-bolt with a lead-sealing hole is arranged on the cover board. The utility model has the advantages of small volume, flexible installation, stable insulation, big creepage distance, omniseal, moistureproofing, anti-condensation and transparency of anti-electricity-theft.
Description
Technical field
The utility model relates to the electric power system high-pressure measurement mechanism, the totally-enclosed current transformer of specifically a kind of column support type.
Background technology
Support type current transformer is to measure electric current in the electric power system switchette cabinet; the equipment of electric energy or relaying protection; its installation site mainly is in the main bus bar chamber of switch cubicle; adopt the form of side dress; the semiclosed current transformer of support type current transformer that electric power system is at present used for adopting iron core to expose; be that inside is encapsulated with one; the insulating body of secondary winding; the iron core that closed assembly forms; three main elements of metal mounting seat are through folder; bolts etc. are assembled into an overall structure; a terminal is the tabular of horizontal positioned; it is big to exist volume; be difficult for wiring; creepage distance is little; the easy moisture absorption; shortcomings such as easy stealing; properties of product are with prolonging service time; its precision; insulation property all descend in various degree; become the hidden danger of equipment safety operation in the electric power system; above problems are puzzlement electric power system maintainer all the time, become the problem of the urgent solution of institute in electric power system support type current transformer upgrading and the development.
The utility model content
The utility model is in order to solve existing big, the shortcomings such as creepage distance is little, the easy moisture absorption of electric power system switch cubicle B-C post formula current transformer volume, and the purpose of this utility model is to provide that a kind of volume is little, creepage distance big, moistureproof, anti-condensation, the anti-electricity-theft totally-enclosed current transformer of column support type.
For achieving the above object, the technical solution adopted in the utility model is:
The utility model adopts the epoxide resin vacuum cast to form integral structure by unshakable in one's determination, winding, secondary winding, primary connection terminal and a secondary connection box, this integrative-structure integral installation is on a flat base that has an installing hole, the primary connection terminal is tabular, one of them terminal is vertically to be provided with, and another terminal is being horizontally disposed with of forming through bending.
The top of sealing the high voltage insulator of a winding is furnished with the full skirt of size interval; The bottom of described secondary connection box has the semicircle wire hole that direct cast forms; The cover plate of secondary connection box is made for adopting transparent material, has the capping screw that has lead seal hole on it; Described transparent material is a polymethyl methacrylate; Described tabular primary connection terminal is provided with installing hole.
The utlity model has following beneficial effect and advantage:
1. volume is little, flexible for installation.The products perfection structural design, structure is compact more, the primary connection terminal shape is tabular for the band installing hole, a terminal is a vertical direction, another terminal is for being the direction of level through twice bending, effectively guarantee in the main bus bar chamber, to carry out electric and mechanical connection flexibly into and out of line row, can be installed on flexibly in the switch cabinet, use as electric current, electric energy metrical and relaying protection with bus;
2. insulation is stable, creepage distance is big.Adopt epoxide resin vacuum to water and into a single integrated structure, it is reliable and stable to insulate, and high voltage insulator effectively increases the product surface creepage distance near the full skirt that the primary connection terminal position is distributed with size interval;
3. hermetically sealed, moistureproof, anti-condensation.Product is whole to be adopted epoxide resin vacuum to water to form, and all parts all seal and place insulating material inside, guarantee that product has protection against the tide, antifogging function, and product can the performance degradation phenomenon not occur because of the humidity of running environment, condensation;
4. the transparence of stealing.The secondary connection terminal is positioned at the secondary connection box that transparent material is made cover plate for sealing, can conveniently observe directly the actual conditions of secondary connection, and the secondary connection box has the lead sealing of having function, avoids switching secondary line and causes stealing electricity phenomenon.
Description of drawings
Fig. 1 is the utility model external structure front view;
Fig. 2 is the utility model external structure lateral plan;
Fig. 3 is the utility model internal structure schematic diagram.
Embodiment
Shown in Fig. 1～3, the utility model is into a single integrated structure by 1, winding 2 unshakable in one's determination, secondary winding 3, primary connection terminal 4 and the 5 employing epoxide resin vacuum cast of secondary connection box, this integrative-structure integral installation is on a flat base 6 that has an installing hole, primary connection terminal 4 is the tabular of two band installing holes, one of them terminal is vertically to be provided with, and another terminal is through being horizontally disposed with that twice bending forms.The top of sealing the high voltage insulator 7 of a winding 2 promptly is distributed with the full skirt 8 of size interval near the part of primary connection terminal, the bottom of described secondary connection box 5 has the semicircle wire hole 9 that direct cast forms; The cover plate 10 of secondary connection box 5 is made for adopting transparent material, has the capping screw 11 that has lead seal hole on it, and described transparent material is a polymethyl methacrylate.
Manufacturing process of the present utility model is as follows: secondary winding 3 is wound on the iron core 1 of circular ring type equably, utilize winding 2 of specific purpose tool coiling, and auxiliary wrapping insulating material, after secondary winding 3 is utilized secondary winding support 12 to bundle and is cushioned wrapping, form have primary connection terminal 4, the coil device body of winding 2, secondary winding 3, secondary connection terminal 13; Secondary winding 3 utilizes secondary winding support 12 to be fixed on the mould, one time winding 2 adopts primary connection terminal 4 to be fixed on the mould, adjust the distance back and form integral structure with the epoxide resin vacuum cast cured explosive, be installed on the flat base 6 that has an installing hole with connector again, the cover plate 10 of the secondary connection box 5 that transparent material (present embodiment employing polymethyl methacrylate) is made adopts capping screw 11 that secondary connection terminal 13 envelopes are put at last, when the user uses, can conveniently observe directly the actual conditions of secondary connection, sealing cover screw 10 has lead seal hole and there is semicircular wire hole 9 secondary connection cover side, be convenient to drawing of secondary lead wires, have anti-stealing electricity function simultaneously; The high voltage insulator 7 of sealing a winding 2 effectively increases the product surface creepage distance near the full skirt 8 that the primary connection terminal is distributed with size interval.
During use, instrument transformer side dress is fixed on the sidewall of switch cubicle main bus bar chamber, and then carries out the electric and mechanical connection of bus and secondary cable line, install the secondary connection cover at last, promptly finish installation with connector.
The totally-enclosed current transformer of this novel column support type is a kind of new product that designs according to national standard fully, employing rolls iron core, utilize the electromagnetic conversion principle, make the secondary current situation of change of reflected measurement primary current exactly, be transferred to secondary measurement and control device; Product directly is installed in the switch cubicle goes, use as electric current, electric energy measurement and relaying protection.
Adopt that the epoxide resin vacuum cast forms, volume is little, creepage distance is big, dynamic and thermal stability electric current height, measuring accuracy height, protection against the tide, anti-condensation, anti-electricity-theft, can be widely used in the transformation of electric power system switch cubicle and newly design in the switch cubicle and go.
Claims (6)
1. totally-enclosed current transformer of column support type, adopt the epoxide resin vacuum cast to form integral structure by unshakable in one's determination, winding, secondary winding, primary connection terminal and a secondary connection box, this integrative-structure integral installation is on a flat base that has an installing hole, it is characterized in that: primary connection terminal (4) is for tabular, one of them terminal is vertically to be provided with, and another terminal is being horizontally disposed with of forming through bending.
2. by the totally-enclosed current transformer of the described column support type of claim 1, it is characterized in that: the top of sealing the high voltage insulator (7) of a winding (2) is furnished with the full skirt (8) of size interval.
3. by the totally-enclosed current transformer of the described column support type of claim 1, it is characterized in that: the bottom of described secondary connection box (5) has the semicircle wire hole (9) that direct cast forms.
4. by the totally-enclosed current transformer of the described column support type of claim 1, it is characterized in that: the cover plate (10) of secondary connection box (5) is made for adopting transparent material, has the capping screw (11) that has lead seal hole on it.
5. by the totally-enclosed current transformer of the described column support type of claim 4, it is characterized in that: described transparent material is a polymethyl methacrylate.
6. by the totally-enclosed current transformer of the described column support type of claim 1, it is characterized in that: described tabular primary connection terminal (4) is provided with installing hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200119406U CN201036151Y (en) | 2007-04-30 | 2007-04-30 | Backbone type totally-enclosed current mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200119406U CN201036151Y (en) | 2007-04-30 | 2007-04-30 | Backbone type totally-enclosed current mutual inductor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201036151Y true CN201036151Y (en) | 2008-03-12 |
Family
ID=39197040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200119406U Expired - Lifetime CN201036151Y (en) | 2007-04-30 | 2007-04-30 | Backbone type totally-enclosed current mutual inductor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201036151Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005294A (en) * | 2010-11-09 | 2011-04-06 | 大连华亿电力电器有限公司 | Small-size current transformer |
| CN102592814A (en) * | 2011-01-12 | 2012-07-18 | 宁夏力成电气集团有限公司 | T-shaped 10kV full working condition all insulation high voltage contact box current transformer |
| CN102945744A (en) * | 2012-10-25 | 2013-02-27 | 湖南特诚成套电器有限公司 | Integrally cast micro-current transformer |
| CN106205959A (en) * | 2016-08-24 | 2016-12-07 | 朱小涛 | A kind of semiclosed dry type mutual inductor |
-
2007
- 2007-04-30 CN CNU2007200119406U patent/CN201036151Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005294A (en) * | 2010-11-09 | 2011-04-06 | 大连华亿电力电器有限公司 | Small-size current transformer |
| CN102005294B (en) * | 2010-11-09 | 2015-08-19 | 大连华亿电力电器有限公司 | A kind of shape small size current mutual inductor |
| CN102592814A (en) * | 2011-01-12 | 2012-07-18 | 宁夏力成电气集团有限公司 | T-shaped 10kV full working condition all insulation high voltage contact box current transformer |
| CN102945744A (en) * | 2012-10-25 | 2013-02-27 | 湖南特诚成套电器有限公司 | Integrally cast micro-current transformer |
| CN106205959A (en) * | 2016-08-24 | 2016-12-07 | 朱小涛 | A kind of semiclosed dry type mutual inductor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080312 |