CN201036158Y - Current mutual inductor with anti-theft electric secondary connection cover - Google Patents
Current mutual inductor with anti-theft electric secondary connection cover Download PDFInfo
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- CN201036158Y CN201036158Y CNU2007200834352U CN200720083435U CN201036158Y CN 201036158 Y CN201036158 Y CN 201036158Y CN U2007200834352 U CNU2007200834352 U CN U2007200834352U CN 200720083435 U CN200720083435 U CN 200720083435U CN 201036158 Y CN201036158 Y CN 201036158Y
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Abstract
A current transformator with an anti-electricity-theft secondary connection shield 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 an anti-electricity-theft secondary connection shield, consisting of a mutual inductor body (1) and an anti-electricity-theft shield body for the secondary connection terminals (3). One end of the anti-electricity-theft shield body for the secondary connection terminals (3) is fixed and connected with the mutual inductor body (1) and the other end is arranged with a wire outlet (3-1). 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 utility model has the advantages of simple structure, low cost and reliable operation.
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 and plastic packaging to prevent that the people from being stealing; because lead sealing can be bought on market and obtain, and is easy to be pried open and seal up again, plastic packaging also is easier to destroyed; therefore, adopt at the secondary line terminals that lead sealing and plastic packaging are 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 straight-through 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 anti-stealing electricity secondary connection cover, technical scheme is achieved in that it comprises the anti-electricity-theft cover body 3 of secondary connection end that an instrument transformer body 1 and an end are fixedlyed connected with instrument transformer body 1, and the other end of the anti-electricity-theft cover body 3 of described secondary connection end has a cable hole 3-1.
Preferably, the anti-electricity-theft cover body 3 of the end of secondary connection described in the technique scheme comprises that a cover body 31 and 32, numbers cover bodies 31 of No. two cover bodies are provided with shackle member 31-1, and No. two cover body 32 is provided with the suitable card 32-1 with shackle member 31-1; Shackle member 31-1 on the described cover body 31 inserts in No. two card 32-1 on the cover body and realizes that clamping connects.
Further, the outer surface of the secondary connection end of the body of instrument transformer described in the technique scheme 1 is provided with protruding 1-3, be respectively arranged with a groove 31-2 and No. two groove 32-2s suitable with protruding 1-3 on the inwall of a described cover body 31 and No. two cover bodies 32, a described groove 31-2 is installed on protruding 1-3 respectively with No. two groove 32-2 and realizes that upward clamping is connected.
Further, 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 end face of instrument transformer body 1 through wires hole.
The current transformer of band anti-stealing electricity secondary connection cover described in the utility model, during use, earlier secondary tape armour multicore cable one end is electrically connected with current terminal and voltage terminal on the instrument transformer body 1 respectively, the other end of secondary tape armour cable passes from the cable hole 3-1 on the anti-electricity-theft cover body 3 of secondary connection end; Groove with a cover body 31 and No. two cover bodies 32 is installed on respectively on the protruding 1-3 of instrument transformer body 1 then, simultaneously, will realize that clamping connects in the card 32-1 on No. two cover bodies of the insertion of the shackle member 31-1 on the described cover body 31.Electricity filching person will need to destroy the anti-electricity-theft cover body 3 of secondary connection end when the secondary connection end carries out the people for stealing, can't reduce after the stealing.The utility model can prevent from deliberately to change the normal wiring of secondary connection end effectively; Thereby the problem of having avoided causing electric weight to be counted less occurs.It has simple in structure, cost is low and the advantage of reliable operation, need not the anti-electricity-theft electric quantity metering box of large volume, is convenient to installation, wiring and management, have broad application prospects.
Description of drawings
Fig. 1 is the overall structure schematic diagram that the utility model is equipped with lead; Fig. 2 is the structure explosive view of embodiment three; Fig. 3 is the A-A partial sectional view of Fig. 2; Fig. 4 is the structure explosive view of embodiment two; Fig. 5 is the instrument transformer structural representation that the transformer guide rod is installed; Fig. 6 is that the B of Fig. 5 is to view; Fig. 7 is the instrument transformer structural representation that metal row is installed; Fig. 8 is the partial cutaway structure chart of embodiment four; Fig. 9 is that the power taking described in the embodiment four presses metallic stud 7 to have the partial cutaway structure chart of the front end of spine; Figure 10 is the stereogram of the anti-electricity-theft cover body 3 of secondary connection end; Figure 11 is the B portion partial enlarged drawing of Fig. 9.
Embodiment
Specify preferred embodiment of the present utility model below in conjunction with accompanying drawing.
Embodiment one: the anti-electricity-theft cover body 3 of secondary connection end that (referring to Fig. 1, Fig. 2, Figure 10) present embodiment is fixedlyed connected with instrument transformer body 1 by an instrument transformer body 1 and an end, the other end of the anti-electricity-theft cover body 3 of described secondary connection end has a cable hole 3-1; The anti-electricity-theft cover body 3 of described secondary connection end is provided with shackle member 3-2, described instrument transformer body 1 is provided with the suitable card 1-4 with shackle member 3-2, and the interior realization of the card 1-4 clamping that the shackle member 3-2 on the anti-electricity-theft cover body 3 of described secondary connection end inserts on the instrument transformer body 1 connects.
In addition, described shackle member 3-2 of present embodiment and card 1-4 are not limited to two shown in Fig. 2, also can be set to any amount according to actual needs.Be understandable that the quantity of shackle member 3-2 and card 1-4 is many more, connect firm more.Can certainly be such situation, that is, described instrument transformer body 1 be provided with shackle member, and the anti-electricity-theft cover body 3 of described secondary connection end is provided with the card suitable with shackle member.
Embodiment two: the difference of (referring to Fig. 1, Fig. 4, Fig. 5) present embodiment and embodiment one is that the anti-electricity-theft cover body 3 of described secondary connection end comprises a cover body 31 and No. two cover bodies 32, No. one cover body 31 is provided with shackle member 31-1, and No. two cover body 32 is provided with the suitable card 32-1 with shackle member 31-1; Shackle member 31-1 on the described cover body 31 inserts in No. two card 32-1 on the cover body and realizes that clamping connects.
Shackle member 31-1 on the described cover body 31 of present embodiment can be two, and is separately positioned on the both sides (as shown in Figure 4) of a cover body 31; Certainly, the quantity of shackle member 31-1 and position also can be decided according to the actual requirements.In addition, also can be such situation, that is, described No. two cover bodies 32 are provided with shackle member, and the corresponding position on cover body 31 is provided with card.
In addition, the connected mode between cover body 31 and No. two cover bodies 32 also can adopt other form, so long as can realize non-dismountable connection and need destructive the disposal just can open, all belongs to the protection range of this patent.
Preferably, the outer surface of the secondary connection end of described instrument transformer body 1 is provided with protruding 1-3, be respectively arranged with a groove 31-2 and No. two groove 32-2s suitable with protruding 1-3 on the inwall of a described cover body 31 and No. two cover bodies 32, a described groove 31-2 and No. two groove 32-2 are installed on respectively on the protruding 1-3.This kind optimal way by protruding 1-3 and groove fit, is realized fixing between cover body 31 of non-disconnectable connection and No. two cover bodies 32 and the instrument transformer body 1.More preferably, described protruding 1-3 is an annular projection.
In addition, the line ball piece 33 that a described cover body 31 or No. two cover bodies 32 are provided with cable deck 34 and are used with cable deck 34, line ball piece 33 is fixedlyed connected with the cable deck by screw.Like this, the three-core cable that is electrically connected with the secondary connection end and the relative position of instrument transformer body 1 and cover body are fixed, and can guarantee that three-core cable is reliable with being electrically connected of three terminals, and then guarantee the accuracy of electric quantity metering.Certainly, described cable deck 34 can also be a U type clamp, as long as can play the effect of attached cable, gets final product.
More preferably, cable hole 3-1 on the anti-electricity-theft cover body 3 of described secondary connection end is connected with bellows 5 by box joint 4, the outside dimension of the connecting portion 4-1 of the internal diameter size of cable hole 3-1 and box joint 4 is suitable, and the connecting portion 4-1 of box joint 4 is installed in the cable hole 2-1 on the anti-electricity-theft face shield 2 of secondary connection end and the nut by box joint 4 is fastenedly connected.Described box joint 4 and bellows 5 can adopt nylon material to make, and box joint 4 can select for use nylon bellows that Quanguan Enterprise Co., Ltd. produces with nylon system box joint; Certainly, described box joint 4 and bellows 5 also can adopt metal material according to actual needs.Described bellows 5 can be protected internal core further, realizes anti-electricity-theft purpose.
Cable is walked at the cable hole 3-1 place of the anti-electricity-theft cover body 3 of secondary connection end, after the secondary connection end of cable and instrument transformer body 1 is affixed respectively, can with the anti-electricity-theft cover body 32 of secondary connection end or 31 and cable be cast into one, can realize anti-electricity-theft purpose of the present utility model preferably; Certainly it will also be appreciated that; after the bellows 5 that is sleeved on cable outside is finished with 4 assemblings of box joint; can be cast into one with the anti-electricity-theft cover body 3 of secondary connection end equally, for the high and low pressure current transformer of any kind, all should be at protection range of the present utility model.
Embodiment three: (referring to Fig. 1, Fig. 2, Fig. 4, Fig. 5, Fig. 6 and Fig. 7) present embodiment and embodiment one or twos' difference is that 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 connected by non-disconnectable mode with the surface of instrument transformer body 1 center hole termination; As shown in Figure 2, described 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.
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 6.Like this, for the punching instrument transformer of same model specification, promptly can be used for metal row, as shown in Figure 7; Also can be used for cylindric primary lines such as transformer guide rod, as shown in Figure 5.
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 that a cover body 21 and 22, numbers cover bodies 21 of No. two cover bodies are 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 protruding coupling part and/or recessed coupling part 21-2, and described No. two cover bodies 22 are provided with No. two protruding coupling parts and/or recessed coupling part 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 protruding coupling part and/or recessed coupling part 21-2 and No. two protruding coupling parts and/or suitable recessed coupling part and/or the protruding coupling part 1-2 of recessed coupling part 22-2, No. two protruding coupling parts on protruding coupling part on the described cover body 21 and/or recessed coupling part 21-2 and described No. two cover bodies 22 and/or recessed coupling part 22-2 respectively with instrument transformer body 1 on recessed coupling part and/or protruding coupling part 1-2 achieve a fixed connection by embedding connected mode; Be respectively arranged with on a described cover body 21 and No. two cover bodies 22 and tear limit 21-3 for No. one open and tear limit 22-3 open No. two.
In addition, the cross sectional shape of described protruding coupling part and/or recessed coupling part 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, tear limit 21-3 for No. one open and tear open for No. two on the housing that limit 22-3 is stuck in 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 protruding coupling part and/or recessed coupling part 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 protruding coupling part described in the utility model and/or recessed coupling part 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 cover body 3 of secondary connection end described in the utility model and anti-electricity-theft face shield 2 select for use transparent material to make, such as, transparent engineering plastics.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 four: (referring to Fig. 3, Fig. 8, Fig. 9, 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 Fig. 8 and shown in Figure 9.
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 4; 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. 3 and shown in Figure 8, 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 pressure metallic stud 7 on the described instrument transformer body 1 has the front end of spine, as Fig. 9, shown in Figure 11.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 built-in 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.
By above-mentioned illustrative embodiments as can be known, technical scheme described in the utility model is not limited thereto.For the one of ordinary skilled in the art; under the situation that does not break away from flesh and blood of the present utility model; can make different modification and improvement to being connected and fixed between anti-electricity-theft cover body 3 of secondary connection end and the instrument transformer body 1; use needs as long as satisfy, all in protection range of the present utility model.
Claims (15)
1. be with the current transformer of anti-stealing electricity secondary connection cover, it comprises instrument transformer body (1), it is characterized in that: it also comprises the non-disconnectable anti-electricity-theft cover body of secondary connection end (3) that is connected of an end and instrument transformer body (1), and the other end of the anti-electricity-theft cover body of described secondary connection end (3) has a cable hole (3-1).
2. the current transformer of band anti-stealing electricity secondary connection cover according to claim 1 is characterized in that:
The concrete structure of described non-disconnectable connection is:
The anti-electricity-theft cover body of described secondary connection end (3) is provided with shackle member (3-2), described instrument transformer body (1) is provided with and the suitable card (1-4) of shackle member (3-2), and the interior realization of card (1-4) clamping that the shackle member (3-2) on the anti-electricity-theft cover body of described secondary connection end (3) is inserted on the instrument transformer body (1) connects.
3. the current transformer of band anti-stealing electricity secondary connection cover according to claim 1, it is characterized in that: the anti-electricity-theft cover body of described secondary connection end (3) comprises a cover body (31) and No. two cover bodies (32), a cover body (31) is provided with shackle member (31-1), and No. two cover bodies (32) are provided with and the suitable card (32-1) of shackle member (31-1); Shackle member (31-1) on the described cover body (31) is inserted in No. two card (32-1) on the cover body and is realized that clamping connects;
The outer surface of the secondary connection end of described instrument transformer body (1) is provided with projection (1-3), be respectively arranged with on the inwall of a described cover body (31) and No. two cover bodies (32) and projection (1-3) suitable groove (31-2) and No. two grooves (32-2), a described groove (31-2) and No. two grooves (32-2) are installed on respectively on the projection (1-3).
4. the current transformer of band anti-stealing electricity secondary connection cover according to claim 3, it is characterized in that: the line ball piece (33) that a described cover body (31) or No. two cover bodies (32) are provided with cable deck (34) and are used with cable deck (34), line ball piece (33) is fixedlyed connected with the cable deck by screw.
5. the current transformer of band anti-stealing electricity secondary connection cover according to claim 4, it is characterized in that: the cable hole (3-1) on the anti-electricity-theft cover body of described secondary connection end (3) is connected with bellows (5) by box joint (4), the outside dimension of the connecting portion (4-1) of the internal diameter size of cable hole (3-1) and box joint (4) is suitable, and the connecting portion (4-1) of box joint (4) is installed in the cable hole (2-1) on the anti-electricity-theft face shield of secondary connection end (2) and the nut by box joint (4) is fastenedly connected.
6. according to the current transformer of claim 1,2,3,4 or 5 described band anti-stealing electricity secondary connection covers, 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 anti-stealing electricity secondary connection cover 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 anti-stealing electricity secondary connection cover 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 anti-stealing electricity secondary connection cover 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 anti-stealing electricity secondary connection cover 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 anti-stealing electricity secondary connection cover according to claim 6 is characterized in that: anti-electricity-theft cover body of described secondary connection end (3) and anti-electricity-theft face shield (2) and make by transparent material.
12. the current transformer of band anti-stealing electricity secondary connection cover 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).
13. the current transformer of band anti-stealing electricity secondary connection cover according to claim 12 is characterized in that: 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 pressure-wire outlet terminal (2).
14. the current transformer of band anti-stealing electricity secondary connection cover according to claim 13 is characterized in that: carry out relative position by lead sealing (15) between described metallic stud (10a) and the instrument transformer body (1) and fix.
15. the current transformer according to claim 12 or 13 described band anti-stealing electricity secondary connection covers 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 |
|---|---|---|---|
| CNU2007200834352U CN201036158Y (en) | 2007-02-02 | 2007-02-02 | Current mutual inductor with anti-theft electric secondary connection cover |
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2007200834352U CN201036158Y (en) | 2007-02-02 | 2007-02-02 | Current mutual inductor with anti-theft electric secondary connection cover |
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| CN201036158Y true CN201036158Y (en) | 2008-03-12 |
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| CNU2007200834352U Expired - Fee Related CN201036158Y (en) | 2007-02-02 | 2007-02-02 | Current mutual inductor with anti-theft electric secondary connection cover |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051551B (en) * | 2007-02-02 | 2011-04-20 | 湖北盛佳电器设备有限公司 | Current mutual inductor with anti-stealing electricity secondary connection cover |
| CN106546785A (en) * | 2016-10-31 | 2017-03-29 | 国网山东省电力公司济南市长清区供电公司 | Electric energy meter secondary voltage line safeguard protection attachment means |
-
2007
- 2007-02-02 CN CNU2007200834352U patent/CN201036158Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051551B (en) * | 2007-02-02 | 2011-04-20 | 湖北盛佳电器设备有限公司 | Current mutual inductor with anti-stealing electricity secondary connection cover |
| CN106546785A (en) * | 2016-10-31 | 2017-03-29 | 国网山东省电力公司济南市长清区供电公司 | Electric energy meter secondary voltage line safeguard protection attachment means |
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