CN201044209Y

CN201044209Y - Coil type totally enclosed enhanced type current mutual inductor

Info

Publication number: CN201044209Y
Application number: CNU2007201090710U
Authority: CN
Inventors: 刘江仙; 祝顺峰; 毛培民
Original assignee: JIANGSHAN SANJIANG TRANSFORMER CO Ltd
Current assignee: JIANGSHAN SANJIANG TRANSFORMER CO Ltd
Priority date: 2007-05-09
Filing date: 2007-05-09
Publication date: 2008-04-02
Anticipated expiration: 2017-05-09

Abstract

The utility model provides a coil closed reinforced type current transformer, comprising epoxide resin main insulator, a primary coil, a secondary coil and an iron core, wherein the secondary coil is wound on the iron core; the frame structure of the main insulator are provided with a plurality of umbellate skirts; the utility model is characterized in that: the primary coil, the secondary coil and the iron core are all poured with the epoxide resin; an outlet wire connecting terminal of the primary coil is arranged on a top part; a secondary wire connecting seat is arranged on the body of a side wall. The primary coil, the secondary coil and the iron core are all are all poured with the epoxide resin, which changes the fact that part of the secondary coil and part of the iron core are exposed outside; the whole pouring with the epoxide resin ensures that the secondary coil and the iron core are insulated form the air, thereby greatly improving the moistureproof performance and antifouling performance, and ensuring the measuring accuracy of and prolonging the service life of the current transformer.

Description

The totally-enclosed reinforced current transformer of coil type

Technical field

The utility model relates to a kind of instrument transformer, refers more particularly to a kind of reinforced current transformer of coil type of 10kV electric pressure.

Background technology:

The industry standard model that is used for the reinforced current transformer of coil type of 10kV electric pressure is that LQJ-10 (annotates: L---current transformer; Q---coil type; J---reinforced; 10---rated voltage KV; Q---reinforced insulation type.), the structure that adopts is that epoxy resin is poured into a mould at present, be used as main insulation, primary winding and part secondary coil are formed black box with mixed with resin glue, another part secondary coil and iron core expose, primary winding is drawn binding post at the top, and the secondary connection seat is on one's body side walls, and main body contour structures upper part is provided with a plurality of umbrella shapes shirt rim.This structure causes protection against the tide, antifouling property poor because part secondary coil and iron core expose, and influences the certainty of measurement and the useful life of current transformer.

The utility model content

The purpose of this utility model is the deficiency that overcomes prior art, and a kind of structure protection against the tide, the reinforced current transformer of coil type that antifouling property is good are provided.

The technical scheme that technical problem adopted that solves is: the totally-enclosed reinforced current transformer of a kind of coil type, comprise epoxy resin main insulation, primary winding, secondary coil and iron core, secondary coil is on iron core, main body contour structures upper part is provided with a plurality of umbrella shapes shirt rim, it is characterized in that above-mentioned primary winding and secondary coil, iron core all pour into a mould with epoxy resin; Primary winding is drawn binding post at the top, and the secondary connection seat is on one's body side walls.

The beneficial effects of the utility model are: because primary winding, secondary coil and iron core are all poured into a mould with epoxy resin, having changed part secondary coil and iron core exposes, the integrated poured secondary coil and iron core and air of making of epoxy resin is isolated, improved moistureproof, antifouling property greatly, the while has also guaranteed the certainty of measurement of current transformer and has improved useful life.

Description of drawings

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

Fig. 1 is the front view of the utility model embodiment;

Fig. 2 is the left view of the utility model embodiment;

Fig. 3 is the A-A cutaway view (not comprising mounting seat) of the utility model embodiment.

Among the figure 1, epoxy resin main insulation 2, iron core 3, secondary coil 4, primary winding 5, secondary connection terminal 6, copper bar 7, umbrella shape shirt rim

Embodiment:

The current transformer of the utility model embodiment is the totally enclosed type current transformer of poured with epoxy resin, is applicable to the usefulness of doing the measurement and the relaying protection of electric current, electric energy in 50Hz, 10kV and the following circuit.As Fig. 1, shown in 2 and 3, the ring structure iron core that iron core 2 is rolled by silicon steel sheet, secondary coil 4 is on iron core, primary winding 3 passes the window of iron core 2, the lead-out wire of primary winding 3 copper bar 6 of band bus installing hole, iron core 2, secondary coil 4 and primary winding 3 all carry out moulding by casting with epoxy resin main insulation 1, main body contour structures upper part is that epoxy resin main insulation 1 usefulness pours into a plurality of umbrella shapes shirt rim 7, secondary connection terminal 5 is on one's body side walls, as shown in Figure 2, the lower end that is provided with four secondary connection terminals 5 is provided with " 1S1 ", " 1S2 ", the sign of " 2S1 " " 2S2 " can be according to using needs to connect electric current, the lead-out wire of the measurement of electric energy and relaying protection etc.; As shown in Figure 1, the lower end that is positioned at umbrella shape shirt rim 7 is provided with " P1 ", " P2 " two signs, and is corresponding with two copper bars 6 of outlet respectively, and two copper bar 6 outside right angle flangings are respectively equipped with the bus installing hole.Main body is provided with base, has four installing holes to use for installing on the base.

Because current transformer adopts the poured with epoxy resin full-closed structure, its advantage is to improve the sealing property of current transformer, improves current transformer waterproof, humidity resistance, effectively guarantees product quality; This structure has increased creepage distance, has improved insulation property, has anti-electric arc, UV resistant, ageing-resistant, characteristics such as the life-span is long, has also guaranteed the certainty of measurement of current transformer simultaneously and has improved useful life.

At last, it is also to be noted that what more than enumerate only is specific embodiment of the utility model.Obviously, the utility model is not limited to above embodiment, and many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from disclosed content of the present utility model all should be thought protection range of the present utility model.

Claims

1. totally-enclosed reinforced current transformer of coil type, comprise epoxy resin main insulation, primary winding, secondary coil and iron core, secondary coil is on iron core, main body contour structures upper part is provided with a plurality of umbrella shapes shirt rim, it is characterized in that above-mentioned primary winding and secondary coil, iron core all pour into a mould with epoxy resin.

2. the totally-enclosed reinforced current transformer of a kind of coil type according to claim 1 is characterized in that primary winding draws binding post at the top, and the secondary connection seat is on one's body side walls.