CN201984950U - T-shaped 10kV all-condition all-insulation high voltage contact box type current transformer - Google Patents

Abstract

A novel T-shaped 10kV all-condition all-insulation high voltage contact box type current transformer is characterized in that an electrical structure connected according to an electromagnetic induction principle is packaged in an inner cavity of a T-shaped insulator vacuum cast by epoxy resin. An outgoing line seat at the tail end of a primary conductor is subjected to semi-enclosed insulation treatment through a semi-circular umbrella skirt at the bottom of the front face of the transformer to be poured and fixed on the front face end of the bottom of the transformer, and a secondary magnet coil terminal is outgone through an inclined concave surface of an umbrella skirt at the bottom of the transformer. A static contact seat at the head end of the primary conductor of the transformer is concentrically arranged with the horizontal direction of a closed circular barrel of which the end part is provided with a pre-embedded nut, so that a structural form with the function of a static contact box is designed, and the circular barrel with the function of the static contact box and a main body of the transformer are arranged vertically to form a T-shaped structure. The novel T-shaped 10kV all-condition all-insulation high voltage contact box type current transformer is applied to a high-voltage switch cabinet, so that the bare area of an electrified body after the transformer is connected with other electric elements is greatly reduced, and the whole protection grade and the insulating property of electrical equipment are improved.

Description

The full operating mode full-insulating high-voltage of T shape 10kV contact boxlike current transformer

Affiliated technical field

The utility model relates to a kind of on the high voltage power consumption equipment, indirect measuring equipment electric current, be used for driving measure, the current measuring device of measuring instrument and protective device, a kind of New type of current instrument transformer of reflection power consumption equipment current data in real time indirectly.

Background technology

At present, current transformer is as measuring, measuring and monitor the indirect measurement system of power consumption equipment current status data, and mainly supporting application in switchgear assembly generally can't be used separately.The essential structure of conventional current instrument transformer is, adopt poured with epoxy resin, the head end outlet seat of current transformer Primary Conductor and terminal outlet seat, horizontal arrangement is at the positive two ends of instrument transformer respectively, and the head end outlet seat of Primary Conductor and terminal outlet seat all are to expose on the instrument transformer outer surface, after other electric elements are connected, the electrified body bare area is big, and the insulation property weakness is difficult for handling, and when in draw out switchgear, using, need to increase the independent supporting use of fixed contact box parts.

Summary of the invention

In order to overcome the conventional current instrument transformer, in draw out switchgear, use and want supporting fixed contact box, and after other electric elements are connected, the electrified body large tracts of land is exposed outside, the low shortcoming that is not suitable for adverse circumstances work of insulation property, it is a kind of that the utility model provides, and common contact box and common current instrument transformer function can be compound in one, and can be applicable to the full operating mode full-insulating high-voltage of the "T"-shaped 10kV contact boxlike current transformer of adverse circumstances.

The technical scheme that its technical problem that solves the utility model adopts is: will connect vertically arranged instrument transformer electrical structure semi-finished product part by what specification requirement was made by electromagnetic induction principle in advance, that is: the head end static contact seat of iron core, secondary solenoid, Primary Conductor, Primary Conductor and terminal outlet seat encapsulate in the "T"-shaped insulator inner chamber of epoxide resin vacuum casting.The instrument transformer Primary Conductor is passed solenoid, the head end static contact seat is enclosed in the circular cylinder of poured with epoxy resin, cylindrical fixed contact is directly installed on the interior static contact seat of instrument transformer closed circle tube, the terminal outlet seat of Primary Conductor is through the positive bottom semicircular full skirt of instrument transformer, semiclosed insulation processing, cast is fixed on instrument transformer bottom front end, and secondary solenoid terminal is through the oblique concave surface outlet of instrument transformer bottom full skirt.There is the circular cylinder horizontal direction arranged concentric of the sealing of embedded nut instrument transformer Primary Conductor head end static contact seat and end, be designed to have the version of fixed contact kit function, circular cylinder and instrument transformer body with fixed contact kit function are arranged vertically "T"-shaped structure.The circular cylinder end can directly be connected with switch cubicle breaker chamber mounting panel as the installed surface of the utility model instrument transformer.Therefore the feasible circular cylinder that can substitute contact box, on morpheme, form the semi-enclosed "T"-shaped structure that is different from other current transformer with the instrument transformer body, and can significantly reduce with after other electric elements are connected, the bare area of electrified body has improved the integral protection grade and the insulation property of electric equipment.

The beneficial effects of the utility model are: the utility model instrument transformer has substituted the fixed contact box that must install and use on the ordinary tap cabinet product, reduced bonding conductor in the switch cubicle, reduced with after other electric elements are connected, the bare area of electrified body has improved the integral protection grade and the insulation property of electric equipment.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 the utility model internal structure profile

Fig. 2, Fig. 3, Fig. 4, the basic view of Fig. 5 the utility model external structure

The conventional instrument transformer of Fig. 6, Fig. 7 application example installation diagram in high-tension switch cabinet

Fig. 8 the utility model is the application example installation diagram in high-tension switch cabinet

1. Primary Conductor head end static contact seats among the figure, the 2. terminal outlet seat of Primary Conductor, 3. Primary Conductor, 4. iron core, 5. secondary solenoid, 6. secondary solenoid binding post, 7. fixed contact, 8. the utility model, 9. conventional current instrument transformer, 10. circuit breaker, 11. energized conductor, 12. high-tension switch cabinets, 13. fixed contact boxes, 14. installed surface, 15. circular cylinder, 16. semicircle full skirts, 17. " U " type full skirt, 18. embedded nut, 19. the breaker chamber mounting panel, 20. oblique concave surfaces, 21. head end outlet seats, 22. terminal outlet seat, 23. circuit breaker Mume flower contacts.

Embodiment

As shown in fig. 1, the utility model internal structure is: Primary Conductor head end static contact seat (1) is connected with Primary Conductor (3), pass in the middle of the transformer iron core through being wound with secondary solenoid (5) (4), the other end is connected with the terminal outlet seat of Primary Conductor, the two ends of secondary solenoid (5) are connected with secondary solenoid binding post (6), form the instrument transformer electric part, the instrument transformer electric part vertically is encapsulated in the epoxy resin inner chamber of "T"-shaped instrument transformer vacuum pouring.

As shown in Fig. 2, Fig. 3, Fig. 4, Fig. 5, Primary Conductor head end static contact seat (1) is enclosed in the circular cylinder (15) of poured with epoxy resin, cylindrical fixed contact (7) is directly installed on the interior static contact seat (1) of instrument transformer closed circle tube, instrument transformer Primary Conductor head end static contact seat (1) has the circular cylinder (15) of embedded nut (18) to make up with the end, be designed to have the version of fixed contact kit function, the circular cylinder end can directly be connected with the breaker chamber of high-voltage switch cabinet mounting panel as the installed surface (14) of the utility model instrument transformer.The terminal outlet seat of Primary Conductor (2) is perpendicular to the instrument transformer installed surface, cast is fixed on instrument transformer bottom front end, top design semicircle full skirt (16), the below vertically, level design twice " U " shape full skirts (17), secondary solenoid binding post (6) cast is fixed under instrument transformer bottom " U " shape cluster parachute (17), tiltedly on the concave surface (20).

As Fig. 6, shown in Fig. 7, conventional current instrument transformer Primary Conductor head end outlet seat (21) and terminal outlet seat (22) casting on flat are fixed on the instrument transformer end face, need supporting fixed contact box (13) to use when in high-tension switch cabinet, using, when circuit breaker (10) when being in the service position, circuit breaker Mume flower contact (23) is electrically connected with fixed contact (7) the engagement realization of installation in the fixed contact box (13), the bottom of fixed contact (7) is connected with energized conductor (11), the head end outlet seat (21) of the other end and conventional instrument transformer is electrically connected, terminal outlet seat (22) is connected with another section energized conductor, thereby realized being electrically connected, the area that energized conductor is exposed is bigger like this, and the useful space is narrow and small in the high-tension switch cabinet, make high-tension switch cabinet integral insulation level reduce, can not be applicable to abominable operational environment.

As shown in Figure 8, the utility model (8) is used in high-tension switch cabinet (12), utilize the embedded nut on the installed surface (14) to be directly installed on the circuit breaker mounting panel (19), when circuit breaker (10) when being in the service position, circuit breaker Mume flower contact (23) is electrically connected with fixed contact (7) engagement on being installed in the utility model Primary Conductor static contact seat (1), the terminal outlet seat of Primary Conductor (2) is connected with energized conductor (11), form electric loop, fixed contact box (13) during conventional instrument transformer is used among Fig. 6 and the energized conductor (11) that is attached thereto have been saved, the configuration in the high-tension switch cabinet has been simplified in application of the present utility model, reduce exposed electrified body to greatest extent, improved the insulation property of switch cubicle and the ability of adaptation adverse circumstances.Be distributed in semicircle full skirt (16) and " U " shape full skirt (17) on the Primary Conductor outlet seat (2), and circular cylinder (15) with fixed contact box (13) function, effectively electrified body is sealed, increased creepage distance, the insulation property of instrument transformer have been improved, making the instrument transformer can safe operation under different operating modes, and saved raw material, be the high-voltage contact boxlike current transformer of the full operating mode all insulation of a kind of novel "T"-shaped 10kV.

Claims (5)

1. the full operating mode full-insulating high-voltage of "T"-shaped 10kV contact boxlike current transformer, be head end static contact seat and terminal outlet seat with iron core, secondary solenoid, Primary Conductor, Primary Conductor, in the "T"-shaped insulator inner chamber of epoxide resin vacuum casting, encapsulate, it is characterized in that: the instrument transformer Primary Conductor is passed solenoid, the head end static contact seat is enclosed in the circular cylinder of poured with epoxy resin, and cylindrical fixed contact is directly installed on the interior static contact seat of instrument transformer closed circle tube; The terminal outlet seat of Primary Conductor is through the positive bottom semicircular full skirt of instrument transformer, and semiclosed insulation processing is poured into a mould and is fixed on instrument transformer bottom front end; Secondary solenoid terminal is through the oblique concave surface outlet of instrument transformer bottom full skirt.

2. the full operating mode full-insulating high-voltage of "T"-shaped 10kV according to claim 1 contact boxlike current transformer, it is characterized in that: the circular cylinder horizontal direction arranged concentric of the Primary Conductor head end static contact seat of instrument transformer and sealing, fixed contact is directly installed on the interior static contact seat of circular cylinder, the version with fixed contact kit function has been formed in design, and circular cylinder and instrument transformer body with fixed contact kit function are arranged vertically "T"-shaped structure.

3. the full operating mode full-insulating high-voltage of "T"-shaped 10kV according to claim 1 contact boxlike current transformer, it is characterized in that: the terminal outlet seat of Primary Conductor is perpendicular to the mutual inductance installed surface, cast is fixed on instrument transformer body bottom front end, the semicircle full skirt of top design, the edge, below is perpendicular to the installed surface direction, and level designs twice " U " shape full skirt.

4. the full operating mode full-insulating high-voltage of "T"-shaped 10kV according to claim 1 contact boxlike current transformer is characterized in that: the cast of secondary solenoid binding post is fixed on the oblique concave surface of " U " shape full skirt below, instrument transformer bottom.

5. the full operating mode full-insulating high-voltage of "T"-shaped 10kV according to claim 2 contact boxlike current transformer is characterized in that: the circular cylinder end of Primary Conductor static contact seat is installed, and design has embedded nut, directly is connected with switch cubicle breaker chamber mounting panel.

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