CN201036156Y - Current mutual inductor with connection cable - Google Patents
Current mutual inductor with connection cable Download PDFInfo
- Publication number
- CN201036156Y CN201036156Y CNU2007200834333U CN200720083433U CN201036156Y CN 201036156 Y CN201036156 Y CN 201036156Y CN U2007200834333 U CNU2007200834333 U CN U2007200834333U CN 200720083433 U CN200720083433 U CN 200720083433U CN 201036156 Y CN201036156 Y CN 201036156Y
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- current transformer
- transformer body
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Abstract
A current transformator with a connection cable relates to a power mutual inductor. To solve the problems that the secondary connection terminals of the prior built-in voltage-drawing current transformator are exposed and the anti-electricity-theft protection is unreliable, the utility model provides a current transformator with a connection cable, consisting of a mutual inductor body (1) and a cable (6), one end of which is connected with the internal connection terminals of the mutual inductor body (1). The insulated skin on the outside surface of the cable (6) and the mutual inductor body (1) of the secondary connection terminals are cast into one body. The utility model can effectively avoid the normal connection by altering the secondary connection terminals deliberately, thereby avoiding the problem that the quantity of electricity is undercounted. The current connection point and the voltage connection point are all arranged inside the shell of the mutual inductor body and the out-dated lead sealing is replaced. The utility model is particularly applicable to projects with an established cable length and is moisture-proof, waterproof and anti-electricity-theft. The utility model has the advantages of reasonable structure, convenient and shortcut construction as well as low cost.
Description
Technical field
The utility model relates to the electric power mutual-inductor field, is specifically related to a kind of anti-electricity-theft current transformer.
Background technology
Current, in electric energy metrical, usually adopt current transformer and kilowatt-hour meter to be used, an electric energy meter metering how much, depend mainly on voltage, electric current, power factor three elements and the product of time.Therefore, change any one key element in the three elements, can make electric energy meter slow-speed, stall even counter-rotating, thereby reach the purpose of stealing.In the prior art; the secondary line terminals of current transformer are exposed outside; its current terminal and voltage terminal are protected respectively; usually adopt lead sealing to prevent that the people from being stealing; because lead sealing can be bought on market and obtain; be easy to be pried open and seal up again, therefore, adopt at the secondary line terminals that lead sealing is anti-electricity-theft to exist insecure problem.
Secondary connection end at existing current transformer, electricity filching person has multiple mode to reach the purpose of stealing, deliberately change the normal wiring of secondary connection end, or deliberately cause the metering current loop fault, cause the current coil no current of electric energy meter to pass through or only pass through the part electric current, electric weight is counted less, the people is the purpose of stealing thereby reach, such as: but two current terminal commutations are connected stealing 60%, but with two current terminal overlap joint short circuit stealings 30%, serious infringement national interests also jeopardize power grid security simultaneously.Like this, when the anti-electricity-theft operation of reality, each several instrument transformer that measure the family is placed in the batch meter, the volume of batch meter is bigger, and cost is very high, maintenance is inconvenient; Simultaneously, case internal heat generation amount is big, and influence metering simultaneously be the more important thing is to be unfavorable for anti-electricity-theft and the electricity consumption field management.
The utility model content
To be solved in the utility model is that the secondary connection end that has the current transformer of built-in power taking pressure now exposes outside, and has the insecure problem of anti-electricity-theft protection.
For solving the problems of the technologies described above, the utility model provides a kind of current transformer with connection cable, and technical scheme is achieved in that it comprises the cable 6 that an instrument transformer body 1 and an end are electrically connected with the internal interface line end of instrument transformer body 1; The housing of the insulated hull of described cable 6 appearances and the instrument transformer body 1 of secondary connection end is cast into one.
Further, described current transformer is the punching instrument transformer, and it also comprises anti-electricity-theft face shield 2, and described anti-electricity-theft face shield 2 middle parts are provided with primary line through wires hole 2-1; Described anti-electricity-theft face shield 2 is fixedlyed connected with the housing of instrument transformer body 1 through wires hole one side.
The housing of the insulated hull of cable 6 described in the utility model and instrument transformer body 1 is cast into one, electric current contact and voltage contact all are arranged in the housing of instrument transformer body 1, replaced the lead sealing that falls behind, be specially adapted to determine in the engineering of cable length, can protection against the tide, waterproof, anti-electricity-theft; It has rational in infrastructure, reliable, convenient and quick construction, advantage with low cost; Have broad application prospects.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present utility model; Fig. 2 is that the B of Fig. 1 is to view; Fig. 3 is the partial cutaway structure chart of Fig. 1; Fig. 4 is the partial cutaway structure chart with bellows 7 described in the embodiment one; Fig. 5 is a kind of structure explosive view of embodiment two; Fig. 6 is the A-A partial sectional view of Fig. 5; Fig. 7 is the another kind of structure explosive view of embodiment two; Fig. 8 is the instrument transformer structural representation that the transformer guide rod is installed; Fig. 9 is the instrument transformer structural representation that metal row is installed; Figure 10 is the partial cutaway structure chart of embodiment three; Figure 11 is that the power taking described in the embodiment three presses metallic stud 7 to have the partial cutaway structure chart of the front end of spine; Figure 12 is the B portion enlarged drawing of Fig. 4.
Embodiment
Specify preferred embodiment of the present utility model below in conjunction with accompanying drawing.
Embodiment one: the current transformer of the described band connection cable of (referring to Fig. 1, Fig. 2, Fig. 3) present embodiment, form with the cable 6 that the internal interface line end of instrument transformer body 1 is electrically connected by an instrument transformer body 1 and an end; The housing of the insulated hull of described cable 6 appearances and the instrument transformer body 1 of secondary connection end is cast into one.
Particularly, described instrument transformer body 1 can be the current transformer that the external power taking is pressed, and described cable 6 is a multicore cable, to adapt to dissimilar high and low pressure current transformers; Cable 6 is a twin core cable specifically, that is, two heart yearns of described twin core cable are two current signal output lines and are connected with current terminal of instrument transformer body 1 inside respectively.In addition, described instrument transformer body 1 also can be the straight-through current transformer that built-in power taking is pressed, described cable 6 is a three-core cable, and wherein two heart yearns are connected with current terminal of instrument transformer body 1 inside respectively, and another root heart yearn is electrically connected with the voltage terminal of instrument transformer body 1 inside.
Preferably, it also comprises the bellows 7 that is sleeved on cable 6 outsides, and described bellows 7 also is cast into one with the housing of the instrument transformer body 1 of secondary connection end.Described bellows 7 can be protected internal core further, realizes anti-electricity-theft purpose.
Embodiment two: the difference of (referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 7, Fig. 8, Fig. 9) present embodiment and embodiment one is, described current transformer is the punching instrument transformer, it comprises that also the middle part is provided with the anti-electricity-theft face shield 2 of primary line through wires hole 2-1, and described anti-electricity-theft face shield 2 is connected by non-disconnectable mode with the surface of instrument transformer body 1 center hole termination; As shown in Figure 2, described non-disconnectable formula connects concrete structure: anti-electricity-theft face shield 2 is provided with shackle member 2-2, described instrument transformer body 1 is provided with the suitable card 1-1 with shackle member 2-2, and the interior realization of the card 1-1 clamping that described anti-electricity-theft face shield 2 is provided with on the shackle member 2-2 insertion instrument transformer body 1 connects.Certainly, this can not the folding formula connect and can also fix by cast or bonding way.
In addition, described shackle member 2-2 of present embodiment and card 1-1 are not limited to two of the sides shown in Fig. 2, also can be set to any amount according to actual needs.Be understandable that the quantity of shackle member 2-2 and card 1-1 is many more, connect firm more.Can certainly be such situation, that is, described instrument transformer body 1 be provided with shackle member, and described anti-electricity-theft face shield 2 is provided with the card suitable with shackle member.
The shape of described primary line through wires hole 2-1 can be decided according to the cross sectional shape of primary line; For example, for metal row, the shape of described primary line through wires hole 2-1 can be designed as the corresponding rectangle of cross sectional shape with metal row; For cylindric primary line, the shape of described primary line through wires hole 2-1 can be designed as circle.Certainly, in order to increase use interchangeability of the present utility model, the shape of described primary line through wires hole 2-1 can also be designed to rectangle and the circular shape that coincides, as shown in Figure 2.Like this, for the punching instrument transformer of same model specification, promptly can be used for metal row, as shown in Figure 9; Also can be used for cylindric primary lines such as transformer guide rod, as shown in Figure 8.
In addition, described anti-electricity-theft face shield 2 can be two, is fixedly installed on respectively on the instrument transformer body 1 through wires hole end faces of both sides.This embodiment carries out anti-electricity-theft protection with instrument transformer body 1 both sides, is mainly used in operating positions such as batch meter is interior, metal row.
Further, described anti-electricity-theft face shield 2 comprises a cover body 21 and No. two cover bodies 22, has between two cover bodies of annexation to connect by non-disconnectable mode; No. one cover body 21 is provided with shackle member 21-1, and No. two cover body 22 is provided with the suitable card 22-1 with shackle member 21-1; Shackle member 21-1 on the described cover body 21 inserts in No. two card 22-1 on the cover body and realizes that clamping connects.
Shackle member 21-1 on the described cover body 21 of present embodiment can be two, and is separately positioned on the both sides of a cover body 21, as shown in Figure 7; Certainly, the quantity of shackle member 21-1 and position also can be arranged on other position on the cover body 21 according to actual needs No. one.In addition, also can be such situation, that is, described No. two cover bodies 22 are provided with shackle member, and the corresponding position on cover body 21 is provided with card.
In addition; connected mode between cover body 21 and No. two cover bodies 22 also can adopt other form; such as cast or adhesive means so long as can realize non-dismountable connection and need the destructive situation about just can open of disposing, all belong to the protection range of this patent.
Preferably, a described cover body 21 is provided with slide block and/or chute 21-2, and described No. two cover bodies 22 are provided with No. two slide blocks and/or chute 22-2; On the described instrument transformer body 1 with the corresponding section of a cover body 21 and No. two cover bodies 22, be respectively arranged with respectively and slide block and/or chute 21-2 and No. two slide blocks and/or suitable chute and/or the slide block 1-2 of chute 22-2, No. two slide blocks on slide block on the described cover body 21 and/or chute 21-2 and described No. two cover bodies 22 and/or chute 22-2 respectively with instrument transformer body 1 on chute and/or slide block 1-2 achieve a fixed connection by embedding connected mode; Be respectively arranged with a flanging 21-3 and No. two flanging 22-3 on a described cover body 21 and No. two cover bodies 22.
In addition, the cross sectional shape of described slide block and/or chute is up-small and down-big shape, like this, can guarantee that a cover body 21 fixedlys connected with instrument transformer body 1 respectively with No. two cover bodies 22; In practical operation, a cover body 21 and No. two cover bodies 22 can be inserted from the both sides of instrument transformer body 1 respectively, after cover body 21 and No. two cover bodies 22 fasten, a flanging 21-3 and No. two flanging 22-3 are stuck on the housing of instrument transformer body 1, further play the effect that relative motion takes place between restriction cover body and the instrument transformer body 1, and be connected to one by shackle member and card, and form non-disconnectable the connection between the instrument transformer body 1.
Certainly, the degree of depth of described slide block and/or chute and length can be according to actual needs or according to the Thickness Design of instrument transformer body 1 housing.
The cross sectional shape of slide block described in the utility model and/or chute also can design according to actual needs; Preferably can be swallow-tail form, inverse-T-shaped or " L " shape.Certainly, be understandable that this cross sectional shape is not limited to described three kinds, use needs, all belong to the protection range of this patent as long as satisfy.
Described anti-electricity-theft face shield 2 can be two, is fixedly installed on respectively on the surface of termination, instrument transformer body 1 center hole both sides.
In addition, anti-electricity-theft face shield 2 described in the utility model selects for use transparent material to make, such as, can select transparent engineering plastics for use.Because, long-term use, between power taking pressure part and the primary line and being connected of secondary line terminals loosening phenomenon can occur, particularly, for the situation of open air use, phenomenon is become flexible in easier appearance, thereby the accuracy rate of influence metering, therefore, the maintainer is by transparent cover body monitoring power taking pressure part and the connection state between the primary line, in time safeguard, natural loss is reduced to minimum.
Embodiment three: (referring to Fig. 6, Figure 10, Figure 11) present embodiment and embodiment one or twos' difference is, current transformer at band connection cable described in the utility model, it adopts built-in power taking to press mode, the power taking pressure part 10 that is electrically connected with the pressure-wire leading-out terminal is set on the described instrument transformer body 1, described power taking pressure part 10 is arranged on the side of the center hole 1-8 of instrument transformer body 1, and power taking pressure part 10 can radially move along center hole 1-8.The side that power taking pressure part 10 is arranged on center hole 1-8 can be avoided the power taking pressure part to occupy the inner space of center hole 1-8 and influence the use of instrument transformer, simultaneously, the power taking pressure part radially moves the needs that the instrument transformer that can make this structure adapts to different inner diameters, different cross section shape bus along center hole, therefore increases the adaptability that instrument transformer uses.
Preferably, described power taking pressure part 10 is and the metallic stud 10a of instrument transformer body 1 by thread connection; Described instrument transformer body 1 is provided with metal insert 9, the metallic stud 10a that has been threaded on the described metal insert 9, and described metal insert 9 is electrically connected with the pressure-wire leading-out terminal.As shown in Figure 3 and Figure 4.
Simultaneously, carry out relative position by lead sealing 15 between described metallic stud 10a and the instrument transformer body 1 and fix, as shown in Figure 7; Break away from or the loosening collection that influences voltage signal to itself and bus to avoid electricity filching person to pass through rotating metallic double-screw bolt 10a; certainly in actual applications; can also take other purposes that realizes forbidding the double-screw bolt rotation as modes such as welding, rivets, also all at protection range of the present utility model.
In the present embodiment, lead between metal insert 9 and the pressure-wire outlet terminal 2 is to be injection-moulded in the housing of instrument transformer body 1 center hole 1-8 one side, specifically add man-hour, metal insert 9 can be fixed on the instrument transformer body 1 and then by lead and be connected with pressure-wire outlet terminal 2, also can be as Fig. 6 and shown in Figure 10, metal insert 9 and conductor 12 are made integrative-structure, and the other end of conductor 12 directly connects pressure-wire outlet terminal 2; Described conductor 12 can be processed into annular, semicircle, also can be processed into the sheet of rectangle, spill as required, the conductor 12 of laminated structure is arranged on the top of mutual inductor coil 13 and separates the instrument transformer housing of casting outside again by insulating barrier 14 and mutual inductor coil 13.Described structure has conspicuous advantage: metallic stud 10a, metal insert 9 all are arranged on the instrument transformer housing, they do not occupy the inner space of instrument transformer centre bore, thereby do not influence the coiling diameter of coil, can guarantee instrument transformer body 1 smaller volume, save installing space.Simultaneously, the instrument transformer of this structure has also that the voltage signal transmission range is short, simple in structure, tie point is not easy to occur plurality of advantages such as disconnecting less.
For by the situation of double-screw bolt as conductor power taking pressure part, preferred structure is, respectively be provided with a metal displacer key 9 in the through wires hole both sides of instrument transformer body 1, be electrically connected between two metal displacer keys, the metallic stud 10 that all has been threaded on each metal displacer key, like this, the power taking pressure part of both direction acts on bus simultaneously, feasible electrical connection is stable more and accurate, thereby better the voltage signal on the bus is passed.
In addition, the power taking on the described instrument transformer body 1 presses metallic stud 10 to have the front end of spine.As Figure 11, shown in Figure 12.The structural design of this kind power taking pressure side can be applied on the lead with insulating covering, and described spine front end can puncture the insulating covering of lead, thereby makes the power taking pressure part be electrically connected the extraction that realizes the wire voltage signal with the wire of lead.
Here to mention especially; the spine front end of described power taking pressure part can be one group of front end with needle-like or laciniation composition; be understandable that; by having the front end that needle-like or laciniation are formed; its profile is not limit; such as forming semicircle by the needle point or the sawtooth of different length; thereby just can contact the effect that guarantees that power taking is pressed well with round conductor; certainly can also be at the lead of different profiles and the front end outer shape of different power taking pressure parts is set; as long as can realize that the needle point of power taking pressure part or sawtooth puncture the wire insulation foreskin and come power taking to press, all at protection range of the present utility model.
Need to prove; technical scheme described in the utility model is not limited to the type of centre path current formula instrument transformer; as long as cable is electrically connected with the internal interface line end of instrument transformer; the housing of the insulated hull of cable appearance and instrument transformer body is cast into one; and do not make performing creative labour, all in protection range of the present utility model.
Claims (14)
1. be with the current transformer of connection cable, it comprises instrument transformer body (1), it is characterized in that: it also comprises the cable (6) that an end is electrically connected with the internal interface line end of instrument transformer body (1); The housing of the insulated hull of described cable (6) appearance and the instrument transformer body (1) of secondary connection end is cast into one.
2. the current transformer of band connection cable according to claim 1 is characterized in that: it also comprises the bellows (7) that is sleeved on cable (6) outside, and described bellows (7) also is cast into one with the housing of the instrument transformer body (1) of secondary connection end.
3. the current transformer of band connection cable according to claim 1 and 2 is characterized in that: described cable (6) is a multicore cable.
4. the current transformer of band connection cable according to claim 3 is characterized in that: described cable (6) is a twin core cable.
5. the current transformer of band connection cable according to claim 3 is characterized in that: the current transformer that described instrument transformer body (1) is pressed for built-in power taking, described cable (6) is a three-core cable.
6. the current transformer of band connection cable according to claim 1 and 2, it is characterized in that: described current transformer is the punching instrument transformer, it comprises that also the middle part is provided with the anti-electricity-theft face shield (2) of primary line through wires hole (2-1), and described anti-electricity-theft face shield (2) is connected by non-disconnectable mode with the surface of instrument transformer body (1) center hole termination.
7. the current transformer of band connection cable according to claim 6, it is characterized in that: described anti-electricity-theft face shield (2) is provided with shackle member (2-2), described instrument transformer body (1) is provided with and the suitable card (1-1) of shackle member (2-2), and the interior realization of card (1-1) clamping that described anti-electricity-theft face shield (2) is provided with on shackle member (2-2) the insertion instrument transformer body (1) connects.
8. the current transformer of band connection cable according to claim 6 is characterized in that: described anti-electricity-theft face shield (2) comprises a cover body (21) and No. two cover bodies (22); Have between two cover bodies of annexation and connect by non-disconnectable mode.
9. the current transformer of band connection cable according to claim 8 is characterized in that:
The concrete structure that non-disconnectable mode connects between two cover bodies is:
A cover body (21) is provided with shackle member (21-1), and No. two cover bodies (22) are provided with and the suitable card (22-1) of shackle member (21-1); Shackle member (21-1) on the described cover body (21) is inserted in No. two card (22-1) on the cover body and is realized that clamping connects;
A described cover body (21) is provided with slide block and/or chute (21-2), and described No. two cover bodies (22) are provided with No. two slide blocks and/or chute (22-2); Described instrument transformer body (1) is gone up the corresponding section with a cover body (21) and No. two cover bodies (22), be respectively arranged with respectively and slide block and/or chute (21-2) and No. two slide blocks and/or suitable chute and/or the slide block (1-2) of chute (22-2), No. two slide blocks on slide block on the described cover body (21) and/or chute (21-2) and described No. two cover bodies (22) and/or chute (22-2) respectively with instrument transformer body (1) on chute and/or slide block (1-2) achieve a fixed connection by embedding connected mode;
The cross sectional shape of described slide block and/or chute is up-small and down-big shape.
10. the current transformer of band connection cable according to claim 9 is characterized in that: described anti-electricity-theft face shield (2) is two, is fixedly installed on respectively on the surface of termination, instrument transformer body (1) center hole both sides.
11. the current transformer of band connection cable according to claim 1, it is characterized in that: described instrument transformer body (1) is gone up the power taking pressure part (10) that is electrically connected with the pressure-wire leading-out terminal is set, described power taking pressure part (10) is arranged on a side of the center hole (1-8) of instrument transformer body (1), and power taking pressure part (10) can radially move along center hole (1-8).
12. the current transformer of band connection cable according to claim 11 is characterized in that described power taking pressure part (10) is that (10 a) with the metallic stud of instrument transformer body (1) by thread connection; Described instrument transformer body (1) is provided with metal insert (9), the metallic stud (10a) that has been threaded on the described metal insert (9), and described metal insert (9) is electrically connected with pressure-wire outlet terminal (2).
13. the current transformer of band connection cable according to claim 12 is characterized in that carrying out relative position by lead sealing (15) between described metallic stud (10a) and the instrument transformer body (1) fixes.
14. the current transformer according to claim 11 or 13 described band connection cables is characterized in that: the power taking on the described instrument transformer body (1) presses metallic stud (10) to have the front end of spine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200834333U CN201036156Y (en) | 2007-02-02 | 2007-02-02 | Current mutual inductor with connection cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200834333U CN201036156Y (en) | 2007-02-02 | 2007-02-02 | Current mutual inductor with connection cable |
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| Publication Number | Publication Date |
|---|---|
| CN201036156Y true CN201036156Y (en) | 2008-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200834333U Expired - Fee Related CN201036156Y (en) | 2007-02-02 | 2007-02-02 | Current mutual inductor with connection cable |
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| CN (1) | CN201036156Y (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103065783A (en) * | 2012-12-28 | 2013-04-24 | 宁夏回族自治区电力公司 | Buckling type electronic current transformer |
| CN104240928A (en) * | 2014-09-18 | 2014-12-24 | 江苏科兴电器有限公司 | All-working-condition type low-voltage current transformer |
| CN105388346A (en) * | 2014-08-25 | 2016-03-09 | 菲尼克斯电气公司 | Holding device for a rogowski coil |
| CN105551749A (en) * | 2016-01-15 | 2016-05-04 | 胡小青 | Intelligent high-voltage zero sequence current transformer having relatively high wire shearing strength |
| CN105575609A (en) * | 2016-01-15 | 2016-05-11 | 胡小青 | Novel high-voltage transformer for improving wire clamping strength |
| CN105575604A (en) * | 2016-01-15 | 2016-05-11 | 胡小青 | Zero sequence current transformer for improving wire clamping strength |
| CN105575608A (en) * | 2016-01-15 | 2016-05-11 | 胡小青 | High-voltage electric transformer for improving wire clamping strength |
| CN105575606A (en) * | 2016-01-15 | 2016-05-11 | 胡小青 | Middle and high voltage zero-sequence current transformer for improving wire clamping strength |
| CN105575605A (en) * | 2016-01-15 | 2016-05-11 | 胡小青 | Electric zero sequence current transformer for improving wire clamping strength |
| CN105609294A (en) * | 2016-01-15 | 2016-05-25 | 胡小青 | Zero-sequence current transformer with relatively high wire clamping strength |
| CN105609288A (en) * | 2016-01-15 | 2016-05-25 | 胡小青 | Three-phase middle and high voltage zero sequence current transformer capable of promoting wire clamping strength |
| CN105632695A (en) * | 2016-01-15 | 2016-06-01 | 胡小青 | Electric power zero-sequence current transformer capable of improving wire clamp strength |
| CN105826004A (en) * | 2016-01-15 | 2016-08-03 | 胡小青 | Intelligent zero-sequence current transformer with relatively high wire clamping strength |
| CN105845329A (en) * | 2016-01-15 | 2016-08-10 | 胡小青 | High-voltage power transformer for improving wire clamping strength |
| CN105845330A (en) * | 2016-01-15 | 2016-08-10 | 胡小青 | Three-phase medium- and high-voltage zero sequence current transformer for improving wire clamping strength |
| CN105845331A (en) * | 2016-01-15 | 2016-08-10 | 胡小青 | Intelligent middle-high-voltage zero-sequence current transformer capable of improving wire-clamping strength |
| CN108172386A (en) * | 2018-03-06 | 2018-06-15 | 浙江天际互感器有限公司 | A kind of Open Type Electric Current Mutual Inductor of outdoor desirable voltage signal |
| CN111948448A (en) * | 2020-08-20 | 2020-11-17 | 国网河北省电力有限公司沧州供电分公司 | Anti-electricity-stealing system based on expert knowledge base |
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2007
- 2007-02-02 CN CNU2007200834333U patent/CN201036156Y/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103065783A (en) * | 2012-12-28 | 2013-04-24 | 宁夏回族自治区电力公司 | Buckling type electronic current transformer |
| CN105388346A (en) * | 2014-08-25 | 2016-03-09 | 菲尼克斯电气公司 | Holding device for a rogowski coil |
| US10276297B2 (en) | 2014-08-25 | 2019-04-30 | Phoenix Contact Gmbh & Co. Kg | Holding device for a rogowski coil |
| CN104240928A (en) * | 2014-09-18 | 2014-12-24 | 江苏科兴电器有限公司 | All-working-condition type low-voltage current transformer |
| CN105575605A (en) * | 2016-01-15 | 2016-05-11 | 胡小青 | Electric zero sequence current transformer for improving wire clamping strength |
| CN105632695A (en) * | 2016-01-15 | 2016-06-01 | 胡小青 | Electric power zero-sequence current transformer capable of improving wire clamp strength |
| CN105575608A (en) * | 2016-01-15 | 2016-05-11 | 胡小青 | High-voltage electric transformer for improving wire clamping strength |
| CN105575606A (en) * | 2016-01-15 | 2016-05-11 | 胡小青 | Middle and high voltage zero-sequence current transformer for improving wire clamping strength |
| CN105575609A (en) * | 2016-01-15 | 2016-05-11 | 胡小青 | Novel high-voltage transformer for improving wire clamping strength |
| CN105609294A (en) * | 2016-01-15 | 2016-05-25 | 胡小青 | Zero-sequence current transformer with relatively high wire clamping strength |
| CN105609288A (en) * | 2016-01-15 | 2016-05-25 | 胡小青 | Three-phase middle and high voltage zero sequence current transformer capable of promoting wire clamping strength |
| CN105575604A (en) * | 2016-01-15 | 2016-05-11 | 胡小青 | Zero sequence current transformer for improving wire clamping strength |
| CN105826004A (en) * | 2016-01-15 | 2016-08-03 | 胡小青 | Intelligent zero-sequence current transformer with relatively high wire clamping strength |
| CN105845329A (en) * | 2016-01-15 | 2016-08-10 | 胡小青 | High-voltage power transformer for improving wire clamping strength |
| CN105845330A (en) * | 2016-01-15 | 2016-08-10 | 胡小青 | Three-phase medium- and high-voltage zero sequence current transformer for improving wire clamping strength |
| CN105845331A (en) * | 2016-01-15 | 2016-08-10 | 胡小青 | Intelligent middle-high-voltage zero-sequence current transformer capable of improving wire-clamping strength |
| CN105551749A (en) * | 2016-01-15 | 2016-05-04 | 胡小青 | Intelligent high-voltage zero sequence current transformer having relatively high wire shearing strength |
| CN108172386A (en) * | 2018-03-06 | 2018-06-15 | 浙江天际互感器有限公司 | A kind of Open Type Electric Current Mutual Inductor of outdoor desirable voltage signal |
| CN111948448A (en) * | 2020-08-20 | 2020-11-17 | 国网河北省电力有限公司沧州供电分公司 | Anti-electricity-stealing system based on expert knowledge base |
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