CN201796720U

CN201796720U - Oil-immersed inverted current transformer small current ratio wiring structure

Info

Publication number: CN201796720U
Application number: CN201020532946XU
Authority: CN
Inventors: 李涛昌; 李长库; 赵国庆; 哈元亮; 戴新仁; 张俊伟; 张本帅; 于治平; 胡戈
Original assignee: Dalian North Instrument Transformer Group Co Ltd
Current assignee: Dalian North Instrument Transformer Group Co Ltd
Priority date: 2010-09-17
Filing date: 2010-09-17
Publication date: 2011-04-13
Anticipated expiration: 2020-09-17

Abstract

The utility model relates to an oil-immersed inverted current transformer small current ratio wiring structure, comprising a primary conductor, a device body, a primary conducting rod, connecting plates connected in series and in parallel and an oil storing cabinet, wherein the primary conductor is a soft copper twisted wire lapped on the device body; the end part of the soft copper twisted wire is fastened at the wiring end of the primary conducting rod by a wiring terminal, and the other end of the primary conducting rod is connected with the oil storing cabinet in an insulating manner; and the connecting plates connected in series and in parallel are connected with the primary conducting rod. The oil-immersed inverted current transformer small current ratio wiring structure can be convenient to realize in-series and in-parallel connection of the wiring terminal, prevents from rotating and has the advantages of simple structure and convenient.

Description

The little current ratio wiring construction of oil-immersed inverted current transformer

Technical field

The utility model relates to a kind of current transformer, the little current ratio wiring construction of a kind of specifically oil-immersed inverted current transformer.

Background technology

Outdoor oil-immersed inverted current transformer makes the product various aspects of performance improve than vertical current transformer owing to adopted the insulating material of import, advanced structure and Seal Design, therefore uses increasingly extensive in China in recent years.The Primary Conductor of outdoor oil-immersed inverted current transformer adopts aluminum pipe or copper pipe structure usually, thus rated current when big than the easier requirement of satisfying higher dynamic and thermal stability electric current of vertical current transformer.But, when rated current hour, because inverted Primary Conductor is a tubular structure, can't realize more multiturn number, be not easy so on the one hand to satisfy to the requirement of instrument transformer high accuracy, the iron core of instrument transformer and secondary coil volume also can increase on the other hand, can increase a lot of costs in manufacture process.

The utility model content

Can't satisfy certainty of measurement requirement under the little electric current at existing outdoor oil-immersed inverted current transformer, the technical problems to be solved in the utility model provides and a kind ofly can guarantee high accuracy requirement under the little electric current, and the little current ratio wiring construction of the oil-immersed inverted current transformer that reduces cost.

For solving the problems of the technologies described above, the technical solution adopted in the utility model is:

The little current ratio wiring construction of the utility model oil-immersed inverted current transformer, comprise Primary Conductor, device body, primary conductive bar, connection in series-parallel connecting plate and oil conservator, described Primary Conductor is to be paperwrapped in device annealed copper strand wire on one's body, by binding post the annealed copper strand wire end is fastened on the terminals of primary conductive bar, the other end of primary conductive bar is connected with the oil conservator insulation; The connection in series-parallel connecting plate connects the primary conductive bar.

Described primary conductive bar mid portion is to cooperate with insulating washer, oil conservator, prevents the square rod shaped structure that the primary conductive bar rotates; The connection in series-parallel connecting plate is the rectangular slab that an end is provided with recess; Be provided with insulating washer between primary conductive bar and the oil conservator, insulating washer is the outstanding tubular of an end outer rim, is the Long Circle hole in the middle of the tubular; Binding post has base plate and pressing plate two parts, and the corresponding one side of base plate one end and pressing plate is the semicircular arc groove, and two circular through holes of semicircular arc groove fit clamp annealed copper strand wire by clamp-screw; The other end of base plate is provided with 2 through holes that are used to connect the primary conductive bar; Oil conservator P2 side is processed with two Long Circle holes, and oil conservator P1 side is processed with a slotted hole.

The utlity model has following beneficial effect and advantage:

1. scientific structure, easy-to-connect.The number of turn is wrapped on one's body device in accordance with regulations in order to adopt two sections annealed copper strand wires for the utility model, by binding post annealed copper strand wire is fixed on the conducting rod on the oil conservator, by the connection in series-parallel connecting plate busbar on conducting rod and the oil conservator reliably is connected the current transformer primary connection mode that changes at last, realize series connection and in parallel, have simple in structurely, changing-over is advantage easily.

2. anti-rotation.Primary connection terminal one end of the present utility model is positioned at whole totally enclosed oil conservator, and the other end exposes in air, by scientific and reasonable structural design, has prevented that effectively product from rotating in installation and use.

Description of drawings

Fig. 1 is the utility model structural representation;

Fig. 2 is the utility model primary conductive bar schematic diagram;

Fig. 3 A is the utility model insulating washer front view;

Fig. 3 B is the right view of Fig. 3 A;

Fig. 4 is the utility model connection in series-parallel connecting plate schematic diagram;

Fig. 5 A is the utility model binding post front view;

Fig. 5 B is the right view of Fig. 5 A;

Fig. 6 A is the utility model oil conservator front view;

Fig. 6 B is the left view of Fig. 6 A.

Embodiment

As shown in Figure 1, the utility model structure comprises annealed copper strand wire 1, at a draft conducting rod 2 (comprising the 1st primary conductive bar that is arranged in Fig. 1 I position and the 2nd primary conductive bar of II position), connection in series-parallel connecting plate 3, binding post 4, insulating washer 5 and oil conservator 6.Described Primary Conductor is to be paperwrapped in device annealed copper strand wire 1 on one's body, and annealed copper strand wire 1 is fastened on the terminals of primary conductive bar 2 by binding post 4 with annealed copper strand wire 1 end, and the other end of primary conductive bar 2 and oil conservator 6 are fastenedly connected by insulating washer 5; Connection in series-parallel connecting plate 3 can be respectively be connected with the 1st primary conductive bar on the oil conservator P2 side according to customer requirements realizes series connection, is connected with the 2nd primary conductive bar and realizes parallel connection.

As shown in Figure 2, an end of the 1st primary conductive bar and the 2nd primary conductive bar is processed into tabular, is drilled with 2 through holes on the flat board, is used for being connected with binding post 4.The mid portion of primary conductive bar 2 is processed into square, is used for cooperating oil conservator 6 spacing, prevents that primary conductive bar 2 from rotating.

Shown in Fig. 3 A, 3B, insulating washer 5 processes for polytetrafluoroethylene, whole tubular for the outer rim protrusion, be processed into the Long Circle hole in the middle of the tubular, the outside of projection cooperates with Long Circle hole on the oil conservator, square pole inboard and in the middle of the primary conductive bar 2 cooperates, and can make primary conductive bar 2 and oil conservator 6 insulation, can prevent that again primary conductive bar 2 from rotating.

As shown in Figure 4, connection in series-parallel connecting plate 3 is a rectangular slab totally, and the one end is provided with recess.

When needs changed current ratio, the connection in series-parallel connecting plate 3 that can overturn made fluting one end to the left or to the right, respectively with oil conservator 6 on the 1st primary conductive bar and the 2nd primary conductive bar of II position is connected the realization serial or parallel connection.I position among Fig. 6 A and II position and position consistency shown in Figure 1.

Shown in Fig. 5 A, 5B, binding post 4 is for having base plate 41 and pressing plate 42 two parts, and the one side of an end and pressing plate 42 corresponding base plates 41 is processed into the semicircular arc groove, two circular through holes of semicircular arc groove fit, under the effect of clamp-screw, annealed copper strand wire 1 is clamped; The other end of base plate 41 is drilled with 2 through holes, is used to connect primary conductive bar 2.

Shown in Fig. 6 A, 6B, the P1 side of oil conservator 6 is provided with 1 Long Circle wire hole, and the P2 side is provided with 2 Long Circle wire holes, i.e. the 1st Long Circle wire hole (the I position among Fig. 6 A) and the 2nd Long Circle wire hole (the II position among Fig. 6 A).In the time of need being connected in parallel, connection in series-parallel connecting plate 3 is connected with conducting rod; In the time of need being connected in series, be connected with the 1st primary conductive bar with connection in series-parallel connecting plate 3.

Claims

1. little current ratio wiring construction of oil-immersed inverted current transformer, comprise Primary Conductor, device body, primary conductive bar, connection in series-parallel connecting plate and oil conservator, it is characterized in that: described Primary Conductor is to be paperwrapped in device annealed copper strand wire (1) on one's body, by binding post (4) annealed copper strand wire (1) end is fastened on the terminals of primary conductive bar (2), the other end of primary conductive bar (2) is connected with oil conservator (6) insulation; Connection in series-parallel connecting plate (3) connects primary conductive bar (2).

2. by the little current ratio wiring construction of the described oil-immersed inverted current transformer of claim 1, it is characterized in that: described primary conductive bar (2) mid portion prevents the square rod shaped structure that primary conductive bar (2) rotates for cooperating with insulating washer, oil conservator.

3. by the little current ratio wiring construction of the described oil-immersed inverted current transformer of claim 1, it is characterized in that: connection in series-parallel connecting plate (3) is the rectangular slab that an end is provided with recess.

4. by the little current ratio wiring construction of the described oil-immersed inverted current transformer of claim 1, it is characterized in that: be provided with insulating washer (5) between primary conductive bar (2) and the oil conservator (6), insulating washer (5) is the outstanding tubular of an end outer rim, is the Long Circle hole in the middle of the tubular.

5. by the little current ratio wiring construction of the described oil-immersed inverted current transformer of claim 1, it is characterized in that: binding post (4) has base plate (41) and pressing plate (42) two parts, the corresponding one side of base plate (41) one ends and pressing plate (42) is the semicircular arc groove, two circular through holes of semicircular arc groove fit clamp annealed copper strand wire (1) by clamp-screw; The other end of base plate (41) is provided with 2 through holes that are used to connect primary conductive bar (2).

6. by the little current ratio wiring construction of the described oil-immersed inverted current transformer of claim 1, it is characterized in that: oil conservator (6) P2 side is provided with two Long Circle holes, and the P1 side is provided with a slotted hole.