CN208489079U - A kind of ring network cabinet ground-type potential transformer - Google Patents

Abstract

The utility model relates to electric system high-tension measurement or relay protection device, in particular to a kind of ring network cabinet ground-type potential transformer.Including insulator and it is sealed and placed in the intracorporal iron core of insulation, first winding and secondary winding, secondary winding and first winding are wound on an insulation framework upper rear set on iron core with one heart from inside to outside, the top of insulator is plane, the primary connection terminal of first winding is drawn by plane, the secondary wiring terminals of secondary winding are drawn by the lower front of insulator, and the back lower of insulator is equipped with ground terminal.The utility model is small in size, function is complete, easy for installation, easy to maintain, insulation is stablized, safe operation, more improves the designing and manufacturing level of voltage transformer switchgear.

Description

A kind of ring network cabinet ground-type potential transformer

Technical field

The utility model relates to electric system high-tension measurement or relay protection device, in particular to a kind of ring network cabinet ground connection Formula voltage transformer.

Background technique

Voltage transformer is used as in the power system to measuring instrument, instrument or relay protection, and control device transmits information Major electrical components, installation space, mounting means, small product size, properties of product, product capacity etc. have stringent want It asks.With electrical modernization development, the matched switchgear of voltage transformer has become urban industry park, residential area, quotient The departments such as industry center, industrial and mining enterprises are most preferably setting for electric energy distribution, control and electic protection as power supply unit and terminal device It is standby；Common voltage mutual inductor makes the switchgear to form a complete production network because volume is big, capacity is small, installation is complicated, the disadvantages of need to safeguarding The defects of bigger there is volume, in order to realize that the volume miniaturization of switch cabinet equipment, capacity is big, the functions such as flexible for installation are special Point, it is accordingly required in particular to which development and design goes out the totally enclosed Special grounding formula voltage transformer of a kind of small size, large capacity.

Utility model content

In view of the above-mentioned problems, the purpose of this utility model is to provide a kind of ring network cabinet ground-type potential transformer, with Solve the problems, such as that existing voltage transformer volume is big, capacity is small, installation is complicated, maintenance is cumbersome.

In order to achieve the above purposes, the technical solution adopted by the utility model is:

A kind of ring network cabinet ground-type potential transformer, including insulator and it is sealed and placed in the intracorporal iron core of the insulation, one Secondary winding and secondary winding, secondary winding and first winding are wound on an insulation framework upper rear set mounted in iron core with one heart from inside to outside On, the top of the insulator is plane, and the primary connection terminal of the first winding is drawn by the plane, it is described it is secondary around The secondary wiring terminals of group are drawn by the lower front of the insulator, and the back lower of the insulator is equipped with ground terminal.

The insulator is square structure, and quadrangle is equipped with chamfering.

The forward and backward lateral edge in the top of the insulator is laterally equipped with upper recess.

The lower part left and right side of the insulator is transversely equipped with undercut.

The lower front of the insulator is equipped with secondary connection seat, and the secondary wiring terminals are drawn by the secondary connection seat Out, the secondary connection seat is equipped with secondary protection cover.

Setting is once grounded N-terminal in the secondary connection seat.

The secondary connection seat is an integral structure with the insulator.

The bottom of the insulator is equipped with mounting base.

The insulator is formed using epoxide resin material is integrated poured.

The utility model have the following advantages that and the utility model has the advantages that

1. the utility model is small in size, function is complete: optimizing structure design, product use c-type iron core, compact-sized volume Small, capacity is big, and the corollary new voltage transformer for being more applicable for switchgear uses；

2. the utility model has the advantages of convenient installation, easy to maintain: when product is installed and used, only need to be mounted on mutual inductor according to phase sequence In switchgear, the assembly time of switchgear is effectively saved；Product is simpler when overhauling, and does not need special maintenance workers Make；

3. the utility model insulation is stablized, safe operation: being formed using epoxide resin material is integrated poured, insulation is reliable； One time high-voltage connection terminal is planar design, increases a creepage distance, effectively reduces switchgear size, have from design Effect avoids many hidden danger of quality, guarantees that operation is safer.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the left side view of Fig. 1；

Fig. 3 is the top view of Fig. 1；

Fig. 4 is the utility model external structure main view.

In figure: 1 is iron core；2 be first winding；3 be secondary winding；4 be secondary connection seat；5 be mounting base；6 be one Secondary connecting terminal；7 be upper recess；8 be chamfering；9 be plane；10 be undercut；11 be secondary protection cover；12 be ground terminal Son；13 be insulator.

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 Figs 1-4, a kind of ring network cabinet ground-type potential transformer provided by the utility model, including insulator 13 And it is sealed and placed in iron core 1, first winding 2 and secondary winding 3 in insulator 13, secondary winding 3 and first winding 2 are same from inside to outside The heart is wound on an insulation framework upper rear set on the iron core 1, and the top of insulator 13 is plane 9, increase over the ground surface creepage away from From.The primary connection terminal 6 of first winding 2 is drawn by plane 9, before the secondary wiring terminals of secondary winding 3 are by insulator 13 Side lower part is drawn, and the back lower of insulator 13 is equipped with ground terminal 12, facilitates ground connection.

The bottom of insulator 13 is equipped with mounting base 5, and insulator 13 is square structure, and quadrangle is equipped with chamfering 8, such as Fig. 3 It is shown.The forward and backward lateral edge in the top of insulator 13 is laterally equipped with upper recess 7.The lower part left and right side of insulator 13 is transversely equal Equipped with undercut 10, guarantee that insulation is uniform.

The lower front of insulator 13 be equipped with secondary connection seat 4, increase the insulation of a high-voltage connection terminal over the ground away from From.Secondary wiring terminals are drawn by secondary connection seat 4, and secondary connection seat 4 is equipped with secondary protection cover 11.In secondary connection seat 4 Setting is once grounded N-terminal, facilitates terminal ground.

Secondary connection seat 4 is an integral structure with insulator 13.

Insulator 13 uses poured with epoxy resin for integral type full-closed structure, is finally mounted as a whole on a mounting base On 5.

The manufacturing process of the utility model is:

Secondary winding 3 and first winding 2 are concentric to be wound on an insulation framework upper rear set on iron core 1, by insulation and It is fixed in casting mold after buffering wrapping, has reconnected first winding inserts, connect secondary connection, adjusted insulation distance, adopt Solidified with epoxide resin vacuum casting, is finally mounted as a whole on a mounting base 5；Become therewith: product it is primary High-voltage connection terminal has 9 form of horizontal plane, increases surface creepage distance over the ground；Envelope sets iron core 1, first winding 2 and secondary The insulator 13 of winding 3 is square structure, and quadrangle is equipped with chamfering 8, forward and backward upper side recess 7 and left and right lower section recess 10, Guarantee that insulation is uniform；High-voltage connection terminal at 13 top of insulator is located at top, guarantees effective with a high-pressure connection line Electrical contact, and guarantee whole there is enough mechanical strengths；It seals the secondary connection seat 4 set and is located at integral structure front end It is biased to the position of lower part, increases the insulation distance of primary connection terminal over the ground；13 rear side lower section of insulator is provided with ground terminal Son facilitates ground connection.

In use, voltage transformer is successively mounted in ring according to phase sequence distance by the mounting base 5 first with voltage transformer On net switch cabinet chassis, then product primary connection terminal is accessed, another terminal N and ground terminal 12 are grounded together, most laggard The connection of row secondary line cable and secondary wiring terminals, and install secondary anti-fraudulent use of electricity shield 11 additional, ring network cabinet grounding type voltage Mutual inductor assembly work is completed.

Ring network cabinet provided by the utility model is fully according to national standard and switchgear skill with ground-type potential transformer Art requires and a kind of new product of design, rolls iron core using c-type, using electromagnetic conversion principle, enables secondary voltage accurately The situation of change for reflecting primary voltage, uses as voltage measurement and relay protection.

The utility model is small in size, function is complete, easy for installation, easy to maintain, insulation is stablized, safe operation, is more promoted The designing and manufacturing level of voltage transformer switchgear.Reduce the size of switchgear, the technical equipment of lifting switch cabinet on the whole Level, while reducing the economic cost of switchgear, improve the market competitiveness of switchgear.The utility model mutual induction of voltage Device is exactly a new generation's production developed in line with brief, reliable, safe operation, the design principle easy to maintain, economy of insulating Product.

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 (9)

1. a kind of ring network cabinet ground-type potential transformer, which is characterized in that including insulator (13) and be sealed and placed in the insulation Iron core (1), first winding (2) and secondary winding (3) in body (13), secondary winding (3) and first winding (2) are same from inside to outside The heart is wound on an insulation framework upper rear set on iron core (1), and the top of the insulator (13) is plane (9), described primary The primary connection terminal (6) of winding (2) is drawn by the plane (9), and the secondary wiring terminals of the secondary winding (3) are by described The lower front of insulator (13) is drawn, and the back lower of the insulator (13) is equipped with ground terminal (12).

2. ring network cabinet ground-type potential transformer according to claim 1, which is characterized in that the insulator (13) is Square structure, and quadrangle is equipped with chamfering (8).

3. ring network cabinet ground-type potential transformer according to claim 2, which is characterized in that the insulator (13) The forward and backward lateral edge in top is laterally equipped with upper recess (7).

4. ring network cabinet ground-type potential transformer according to claim 3, which is characterized in that the insulator (13) Lower part left and right side is transversely equipped with undercut (10).

5. ring network cabinet ground-type potential transformer according to claim 1, which is characterized in that the insulator (13) Lower front is equipped with secondary connection seat (4), and the secondary wiring terminals are drawn by the secondary connection seat (4), described secondary to connect Line seat (4) is equipped with secondary protection cover (11).

6. ring network cabinet ground-type potential transformer according to claim 5, which is characterized in that the secondary connection seat (4) setting is once grounded N-terminal in.

7. ring network cabinet ground-type potential transformer according to claim 5, which is characterized in that the secondary connection seat (4) it is an integral structure with the insulator (13).

8. ring network cabinet ground-type potential transformer according to claim 1, which is characterized in that the insulator (13) Bottom is equipped with mounting base (5).

9. ring network cabinet ground-type potential transformer according to claim 1-8, which is characterized in that the insulation Body (13) is formed using epoxide resin material is integrated poured.