CN209357607U - Wall-penetrating type Full-closed current transformer - Google Patents
Wall-penetrating type Full-closed current transformer Download PDFInfo
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- CN209357607U CN209357607U CN201822145183.2U CN201822145183U CN209357607U CN 209357607 U CN209357607 U CN 209357607U CN 201822145183 U CN201822145183 U CN 201822145183U CN 209357607 U CN209357607 U CN 209357607U
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Abstract
The utility model relates to electric system high-pressure measurement mechanism, specifically a kind of wall-penetrating type Full-closed current transformer.Including insulator and it is sealed and placed in the intracorporal coil body of insulation, wherein insulator is cylindrical structure and both ends are equipped with primary connection terminal, the excircle of insulator is equipped with mounting flange, mounting flange is equipped with secondary wiring terminals, and insulator includes low-voltage insulation body and the high voltage insulator for being set to low-voltage insulation body both ends.The utility model is poured with epoxide resin vacuum, and small in size, creepage distance is greatly, dynamic and thermal stability electric current is high, measuring accuracy is high, moisture-proof, anti-condensation, anti-electricity-theft, can be widely used in power system switch cabinet transformation and new design switchgear.
Description
Technical field
The utility model relates to electric system high-pressure measurement mechanism, specifically a kind of totally-enclosed Current Mutual Inductance of wall-penetrating type
Device.
Background technique
Wall-penetrating type current transformer is that electric current, electric energy or the equipment of relay protection are measured in power system switch cabinet, at present
The wall-penetrating type current transformer that electric system uses is that (i.e. encapsulated inside has using the exposed semiclosed current transformer of iron core
Three iron core, metal mounting plate main elements made of the insulating body of first and second winding, closed assembly are through related folder, bolt etc.
Be assembled into an overall structure), that there is volumes is big, creepage distance is small, dynamic and thermal stability electric current is small, measuring accuracy is low, the easy moisture absorption,
The disadvantages of easy stealing.With using the time to extend, precision, insulation decline in various degree become in electric system properties of product
The hidden danger of equipment safety operation, the above problems are puzzlement electric system service personnel always, become electric system wall-penetrating type
It is urgently solved the problems, such as in current transformer upgrading and development.
Utility model content
In view of the above-mentioned problems, the purpose of this utility model is to provide a kind of wall-penetrating type Full-closed current transformer, with solution
Wall-penetrating type current transformer volume is big in certainly existing power system switch cabinet, creepage distance is small, dynamic and thermal stability electric current is small, metering essence
The disadvantages of spending low, the easy moisture absorption.
To achieve the goals above, the utility model uses following technical scheme:
A kind of wall-penetrating type Full-closed current transformer, including insulator and it is sealed and placed in the intracorporal coil body of the insulation,
Wherein insulator is cylindrical structure and both ends are equipped with primary connection terminal, and the excircle of the insulator is equipped with Method for Installation
Orchid, the mounting flange are equipped with secondary wiring terminals.
The insulator includes low-voltage insulation body and the high voltage insulator for being set to low-voltage insulation body both ends, the height
The excircle of insulator is pressed to be equipped with multiple full skirts.
Groove between the adjacent full skirt is gradually deepened along axially external.
The mounting flange is square structure and the middle position for being vertically installed in the low-voltage insulation body.
The lower section of the low-voltage insulation body is equipped with boss corresponding with the secondary wiring terminals.
The primary connection terminal is plate-like structure.
The outside of the secondary wiring terminals is equipped with secondary connection cover, and the secondary connection cover is fixed by sealing cover screw.
The coil body includes iron core, first winding and secondary winding, and wherein secondary winding is wound on the iron core,
The first winding passes through the inner hole of secondary winding, and both ends are connect with two primary connection terminals respectively.
Envelope is equipped with the secondary winding bracket for being used to support the secondary winding, the secondary winding branch in the mounting flange
Frame is equipped with flange and installs inserts.
The insulator and the mounting flange are poured using epoxide resin vacuum is integrally formed formula full-closed structure.
The advantages of the utility model and beneficial effect are；
1. small in size, creepage distance is big: the utility model is included mounting plate, is to be poured using epoxide resin vacuum into one
Body structure, iron core are sealed and placed in inside insulating materials, optimizing structure design, and small product size is small, light-weight, surface creepage distance
Greatly, it can flexibly be installed in switch cabinet, be used as electric current, electrical energy measurement and relay protection.
2. dynamic and thermal stability electric current is high, measuring accuracy is high: dynamic and thermal stability electric current of the utility model is high, can effectively avoid be
System short circuit and overcurrent cause mutual inductor temperature rise excessively high and insulation damages；Metering coil can be made the form of multiple no-load voltage ratio, metering
Precision can achieve 0.2S grades, and the accuracy that product is measured in the case where wide load and load change greatly is effectively ensured.
3. hermetically sealed, moisture-proof, anti-condensation: the utility model integrally uses epoxide resin vacuum to pour, and all components are equal
It is sealed and placed in inside insulating materials, guarantees that product has moisture-proof, antifogging function, product will not be because of the moist, solidifying of running environment
Reveal and performance degradation phenomena occurs.
4. anti-electricity-theft transparence: the secondary wiring terminals of the utility model are located at secondary connection cover made of transparent material
It is interior, the actual conditions of secondary connection can be conveniently observed directly, secondary connection cover has the function of to avoid switching secondary with lead sealing
Line causes stealing electricity phenomenon.
Detailed description of the invention
Fig. 1 is the external structure main view of the utility model；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the schematic diagram of internal structure of the utility model.
In figure: 1 is iron core；2 be first winding；3 be secondary winding；4 be primary connection terminal；5 be secondary connection end
Son；6 be high voltage insulator；7 be low-voltage insulation body；8 be secondary connection cover；9 be sealing cover screw；10 be outlet hole；11 be installation
Flange；12 be secondary winding bracket；13 install inserts for flange.
Specific embodiment
In order to keep the purpose of this utility model, technical solution and advantage clearer, with reference to the accompanying drawing and it is embodied
The utility model is described in detail in example.
As shown in Figure 1-3, a kind of wall-penetrating type Full-closed current transformer provided by the utility model, including insulator and envelope
It is placed in the intracorporal coil body of insulation, wherein insulator is cylindrical structure and both ends are equipped with primary connection terminal 4, insulator
Excircle be equipped with mounting flange 11, mounting flange 11 be equipped with secondary wiring terminals 5.
Insulator includes low-voltage insulation body 7 and the high voltage insulator 6 for being set to 7 both ends of low-voltage insulation body, high voltage insulator 6
Excircle be equipped with multiple full skirts, the groove between adjacent full skirt is gradually deepened along axially external, effectively increase product surface
Creepage distance.
Mounting flange 11 is square structure and the middle position for being vertically installed in low-voltage insulation body 7.Low-voltage insulation body 7
Lower section is equipped with boss 10 corresponding with secondary wiring terminals 5.
Primary connection terminal 4 is plate-like structure.The outside of secondary wiring terminals 5 is equipped with secondary the connecing of transparent material production
Irdome 8, secondary connection cover 8 is fixed by sealing cover screw 9, can conveniently observe directly the actual conditions of secondary connection and have anti-
Stealing function.
Coil body includes iron core 1 and the first winding being wound on iron core 12 and secondary winding 3.Insulator and Method for Installation
Orchid 11 is integrally formed formula full-closed structure using using epoxide resin vacuum casting.Envelope, which is equipped with, in mounting flange 11 is used to support two
The secondary winding bracket 12 of secondary winding 3, secondary winding bracket 12 are equipped with flange and install inserts 13.
The manufacturing process of the utility model is:
Secondary winding 3 is equably wound on the iron core 1 of circular ring type, and using specific purpose tool coiling first winding 2, and pair helps
Insulating materials is wrapped up, after secondary winding 3 is bundled using secondary winding bracket 13 and buffers wrapping, being formed has primary connection
Terminal 4, first winding 2, secondary winding 3, secondary wiring terminals 5 coil body；Secondary winding 3 utilizes secondary winding bracket 12
And flange installation inserts 13 is fixed on mold, first winding 2 is fixed on mold using primary connection terminal 4, adjust away from
Solidified from rear with epoxide resin vacuum casting, becomes one therewith by primary connection terminal 4, high voltage insulator 6, Method for Installation
Blue 11, the integral structure of low-voltage insulation body 7.Last secondary connection cover 8 sets 5 envelope of secondary wiring terminals using sealing cover screw 9
Get up, in use, the actual conditions of secondary connection can be observed directly conveniently, sealing cover screw 9, secondary connection cover 8 have user
There is boss 10 above lead seal hole and secondary connection cover, it is more obvious convenient for name plate set.
The high voltage insulator 6 of encapsulating first winding 2 is the indent full skirt that cross sectional shape is circular ring shape, effectively increase product table
Face creepage distance；The low-voltage insulation body 8 of secondary winding 3 is encapsulated as traverse cylindrical body pattern, ensure that Inside coil insulation
And on the basis of electric field distance is uniform, keep product structure more reasonable and compact dimensions.
In use, mutual inductor is first passed through the good profiling hole of switch cabinet pre-production, inserts then is installed using flange
It is fixed with the mounting hole of cabinet body with connector, then carries out the electrical and mechanical connection of a bus and secondary cable line.Most
After install secondary connection cover, that is, complete installation.
The utility model wall-penetrating type Full-closed current transformer is adopted fully according to a kind of new product of national standard design
With iron core is rolled, using electromagnetic conversion principle, secondary current is enable accurately to reflect the situation of change of measurement primary current, transmission
To secondary measurement and control device；It is directly mounted at product in switchgear, makes as electric current, electric energy measurement and relay protection
With.
The utility model forms using epoxide resin vacuum casting, is small in size, creepage distance is big, dynamic and thermal stability electric current is high,
Measuring accuracy is high, moisture-proof, anti-condensation, anti-electricity-theft, can be widely used in power system switch cabinet transformation and new design switchgear.
The foregoing is merely the embodiments of the present invention, are not intended to limit the protection scope of the utility model.It is all
Any modification, equivalent substitution and improvement made within spirit of the present utility model and principle, extension etc., are all contained in this reality
With in novel protection scope.
Claims (10)
1. a kind of wall-penetrating type Full-closed current transformer, which is characterized in that including insulator and be sealed and placed in it is described insulation it is intracorporal
Coil body, wherein insulator is cylindrical structure and both ends are equipped with primary connection terminal (4), the excircle of the insulator
It is equipped with mounting flange (11), the mounting flange (11) is equipped with secondary wiring terminals (5).
2. wall-penetrating type Full-closed current transformer according to claim 1, which is characterized in that the insulator includes low pressure
Insulator (7) and the high voltage insulator (6) for being set to low-voltage insulation body (7) both ends, the outer circle of the high voltage insulator (6)
Week is equipped with multiple full skirts.
3. wall-penetrating type Full-closed current transformer according to claim 2, which is characterized in that between the adjacent full skirt
Groove is gradually deepened along axially external.
4. wall-penetrating type Full-closed current transformer according to claim 2, which is characterized in that the mounting flange (11) is
Square structure and the middle position for being vertically installed in the low-voltage insulation body (7).
5. wall-penetrating type Full-closed current transformer according to claim 2, which is characterized in that the low-voltage insulation body (7)
Lower section be equipped with boss (10) corresponding with the secondary wiring terminals (5).
6. wall-penetrating type Full-closed current transformer according to claim 1, which is characterized in that the primary connection terminal
It (4) is plate-like structure.
7. wall-penetrating type Full-closed current transformer according to claim 1, which is characterized in that the secondary wiring terminals
(5) outside is equipped with secondary connection cover (8), and the secondary connection cover (8) is fixed by sealing cover screw (9).
8. wall-penetrating type Full-closed current transformer according to claim 1, which is characterized in that the coil body includes iron
Core (1), first winding (2) and secondary winding (3), wherein secondary winding (3) is wound on the iron core (1), it is described once around
Group (2) passes through the inner hole of secondary winding (3), and both ends are connect with two primary connection terminals (4) respectively.
9. wall-penetrating type Full-closed current transformer according to claim 8, which is characterized in that in the mounting flange (11)
Envelope is equipped with the secondary winding bracket (12) for being used to support the secondary winding (3), and the secondary winding bracket (12) is equipped with method
Orchid installation inserts (13).
10. wall-penetrating type Full-closed current transformer according to claim 1, which is characterized in that the insulator with it is described
Mounting flange (11) is integrally formed formula full-closed structure using epoxide resin vacuum casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822145183.2U CN209357607U (en) | 2018-12-20 | 2018-12-20 | Wall-penetrating type Full-closed current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822145183.2U CN209357607U (en) | 2018-12-20 | 2018-12-20 | Wall-penetrating type Full-closed current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209357607U true CN209357607U (en) | 2019-09-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822145183.2U Active CN209357607U (en) | 2018-12-20 | 2018-12-20 | Wall-penetrating type Full-closed current transformer |
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| CN (1) | CN209357607U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110853876A (en) * | 2019-12-10 | 2020-02-28 | 湖南大北互互感器有限公司 | Indoor totally-enclosed supporting current transformer |
| CN110867315A (en) * | 2019-12-10 | 2020-03-06 | 湖南大北互互感器有限公司 | Current transformer for series capacitance compensation device |
-
2018
- 2018-12-20 CN CN201822145183.2U patent/CN209357607U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110853876A (en) * | 2019-12-10 | 2020-02-28 | 湖南大北互互感器有限公司 | Indoor totally-enclosed supporting current transformer |
| CN110867315A (en) * | 2019-12-10 | 2020-03-06 | 湖南大北互互感器有限公司 | Current transformer for series capacitance compensation device |
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