CN201449880U

CN201449880U - Single-phase current transformer

Info

Publication number: CN201449880U
Application number: CN2009200604792U
Authority: CN
Inventors: 何泽坚
Original assignee: THAI-FENG ELECTRIC Co Ltd ZHONGSHAN
Current assignee: THAI-FENG ELECTRIC Co Ltd ZHONGSHAN
Priority date: 2009-07-10
Filing date: 2009-07-10
Publication date: 2010-05-05
Anticipated expiration: 2019-07-10

Abstract

The utility model discloses a single-phase current transformer, comprising a core and a secondary winding which is wound on the core. The single-phase current transformer is characterized in that a core fixing plate is installed on the core, one side of the core fixing plate is connected with an iron pipe, the core, the secondary winding, the core fixing plate and the iron pipe are formed to be an integrated structure through a vacuum casting insulating material layer. A bottom plate is arranged at the lower side of the insulating material layer, a secondary wiring terminal is arranged on the insulating material layer at one end of the iron pipe, the wiring terminal is connected with the secondary winding through a connecting wire, a plurality of layers of petticoats are arranged on the insulating material layer of the iron pipe. The single-phase current transformer can be used outside the door directly, and the creepage distance is large, the anti-stealing electricity performance is good.

Description

A kind of monophase current instrument transformer

Technical field

The utility model relates to a kind of monophase current instrument transformer.

Background technology

At present, the monophase current instrument transformer that uses in electric power system all uses indoors, and it can not directly use out of doors, and need add the table case again could use out of doors, thereby can not adapt to the development of existing situation; And present monophase current instrument transformer is little along the face creepage distance, thereby causes between device easily or strike sparks between device and the ground threatening personal safety; And the anti-electricity-theft poor performance of traditional monophase current instrument transformer.

Summary of the invention

In order to overcome the deficiencies in the prior art, the utility model provides a kind of and can directly use out of doors and creepage distance is big, the monophase current instrument transformer of thief-proof good electrical property.

The technical scheme that its technical problem that solves the utility model adopts is:

A kind of monophase current instrument transformer, comprise iron core and be wrapped in secondary winding on the iron core, it is characterized in that being equipped with on the described iron core iron core fixed head, one side of iron core fixed head is connected with an iron pipe, described iron core, secondary winding, iron core fixed head and iron pipe form integral structure by the vacuum casting insulating material layer, the below of insulation material layer is provided with base plate, the insulation material layer of iron pipe one end is provided with the secondary connection terminal, be connected by connecting line between described binding post and the secondary winding, the insulation material layer that is positioned at the iron pipe place is provided with the several layers full skirt.

The sidewall of described iron pipe is staggeredly equipped with some holes.

Described secondary connection terminal place is equipped with capping.

The beneficial effects of the utility model are: the utility model adopts the hermetically sealed cast of exterior material to form, and has exempted the shortcoming of leakage of oil and oily deterioration, realizes no oiling, has exempted the preventive trial of annual oil immersion product, has saved lot of manpower and material resources; Insulation material layer adopts exterior material, can directly use out of doors; The insulation material layer at iron pipe place is provided with the several layers full skirt, thereby has strengthened the creepage distance along face, thus can prevent between device effectively or device and ground between sparking threaten personal safety; Secondary connection terminal place is equipped with capping, has strengthened anti-electricity-theft performance.

Description of drawings

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

Fig. 1 is a schematic perspective view of the present utility model;

Fig. 2 is a longitudinal sectional view of the present utility model;

Fig. 3 is a transverse sectional view of the present utility model.

Embodiment

With reference to Fig. 1, Fig. 2, Fig. 3, the disclosed a kind of monophase current instrument transformer of the utility model, comprise iron core 1 and be wrapped in secondary winding 2 on the iron core 1, iron core fixed head 3 is installed on iron core 1, one side of iron core fixed head 3 is connected with an iron pipe 4, the sidewall of iron pipe 4 is staggeredly equipped with some holes 11, thereby has strengthened the mechanical strength of monophase current instrument transformer.

As shown in the figure, iron core 1, secondary winding 2, iron core fixed head 3 and iron pipe 4 form integral structure by vacuum casting insulating material layer 5, and insulation material layer 5 adopts exterior material, can directly use out of doors.

Below insulation material layer 5, be provided with base plate 6, the monophase current instrument transformer can be installed on the power equipment by base plate 6.The insulation material layer of iron pipe 4 one ends is provided with secondary connection terminal 7, be connected by connecting line 8 between secondary connection terminal 7 and the secondary winding 2, the insulation material layer 5 that is positioned at iron pipe 4 places is provided with several layers full skirt 9, thereby strengthened creepage distance along face, thus can prevent between device effectively or device and ground between sparking threaten personal safety.

7 places are equipped with capping 10 at the secondary connection terminal, thereby can strengthen anti-electricity-theft performance of the present utility model.

Claims

1. monophase current instrument transformer, comprise iron core and be wrapped in secondary winding on the iron core, it is characterized in that being equipped with on the described iron core iron core fixed head, one side of iron core fixed head is connected with an iron pipe, described iron core, secondary winding, iron core fixed head and iron pipe form integral structure by the vacuum casting insulating material layer, the below of insulation material layer is provided with base plate, the insulation material layer of iron pipe one end is provided with the secondary connection terminal, be connected by connecting line between described binding post and the secondary winding, the insulation material layer that is positioned at the iron pipe place is provided with the several layers full skirt.

2. a kind of monophase current instrument transformer according to claim 1 is characterized in that the sidewall of described iron pipe is staggeredly equipped with some holes.

3. a kind of monophase current instrument transformer according to claim 1 is characterized in that described secondary connection terminal place is equipped with capping.