CN207149397U - Low magnetic density voltage transformer - Google Patents

Abstract

The utility model belongs to field transformer, more particularly to a kind of low magnetic density voltage transformer, including transformer casing and base, the base is square plate, transformer casing is directly over base, and it is fixedly connected with base, the transformer casing is epoxy resin one moulding by casting, fixation is cored inside transformer casing, primary winding and secondary coil, the primary winding and secondary coil are wrapped on iron core, electrostatic sheild is provided between primary winding and secondary coil, and fill epoxy resin poured body, the iron core includes the silicon steel sheet of multiple stackings, multiple silicon steel sheets are stepped arrangement.The utility model iron core is generally circular, increases iron core net sectional area, while improved magnetic flux performance as the main material of iron core using silicon steel, reduce flux loss, and iron core easy to process and production, reduces cost using the stepped stacking arrangement of multiple silicon steel sheets.

Description

Low magnetic density voltage transformer

Technical field

The utility model belongs to field transformer, and in particular to a kind of low magnetic density voltage transformer.

Background technology

Low magnetic density voltage transformer is that voltage, the equipment of electric energy, low magnetic density are measured in power system or electric control system Voltage transformer is primarily used to measuring instrumentss and protective relaying device power supply, for the voltage, power and electricity of measurement circuitry Can, or for the expensive equipment in the protection circuit in line failure, motor and transformer.Existing low magnetic density voltage Transformer is mainly made up of primary winding, secondary coil, iron core and insulation.

The content of the invention

The purpose of this utility model is to overcome above-mentioned deficiency, there is provided a kind of low magnetic density voltage transformer, iron core is generally Circle, increase iron core net sectional area, while improve magnetic flux performance as the main material of iron core using silicon steel, reduce magnetic flux damage Consumption, and iron core easy to process and production, reduces cost using the stepped stacking arrangement of multiple silicon steel sheets.

In order to achieve the above object, the utility model provides a kind of low magnetic density voltage transformer, including transformer casing and Base, the base are square plate, and transformer casing is fixedly connected directly over base and with base, the transformer Shell is epoxy resin one moulding by casting, fixed cored, primary winding and secondary coil inside transformer casing, described one Secondary coil and secondary coil are wrapped on iron core, and electrostatic sheild is provided between primary winding and secondary coil and fills asphalt mixtures modified by epoxy resin Fat pour mass, the iron core include the silicon steel sheet of multiple stackings, and multiple silicon steel sheets are stepped arrangement.

Further, the primary winding is of coupled connections with secondary coil by iron core.

Further, the height of the multiple silicon steel sheet is successively decreased from centre to both ends, and core section shape is approximately circular.

Further, silicon steel sheet edges and corners rounding.

Further, it is additionally provided with grounding pin on the base.

Further, the secondary coil passes through grounding pin grounding connection.

Further, multiple antifouling work skirts are provided with the top of the transformer casing.

Further, the transformer casing contacts boss with being provided with base contacts.

Further, both ends are respectively equipped with two binding posts at the top of the transformer casing, respectively binding post A and Binding post B, transformer casing side are provided with least two outlet terminals, binding post connection primary winding, and outlet terminal connects Connect secondary coil.

The utility model provides a kind of low magnetic density voltage transformer, has the advantages that：

The utility model provides a kind of low magnetic density voltage transformer, and iron core is generally circular, increases iron core net sectional area, Magnetic flux performance is improved, reduces flux loss, and iron core uses multiple silicon steel sheets as the main material of iron core using silicon steel simultaneously Stepped stacking arrangement, easy to process and production, reduces cost.

Brief description of the drawings

The structural representation for the low magnetic density voltage transformer that Fig. 1 is provided by the utility model embodiment；

The cross-sectional view for the low magnetic density voltage transformer that Fig. 2 is provided by the utility model embodiment；

The core structure schematic diagram for the low magnetic density voltage transformer that Fig. 3 is provided by the utility model embodiment.

Embodiment

The utility model is described further below in conjunction with the accompanying drawings.

Wherein, 1- transformer casings, 2- bases, 3- binding posts A, 4- antifouling work skirt, 5- binding posts B, 6- grounding lead Pin, 7- contact boss, 8- primary windings, 9- electrostatic sheilds, 10- secondary coils, 11- iron cores, 12- silicon steel sheets.

Referring to Fig. 1, Fig. 2 and Fig. 3, the utility model provides a kind of low magnetic density voltage transformer, including the He of transformer casing 1 Base 2, the base 2 are square plate, and transformer casing 1 is fixedly connected directly over base 2 and with base 2, described mutual Sensor shell 1 is epoxy resin one moulding by casting, and cored 11, primary winding 8 and secondary line are fixed in the inside of transformer casing 1 Circle 10, the primary winding 8 and secondary coil 10 are wrapped on iron core 11, are provided between primary winding 8 and secondary coil 10 Electrostatic sheild 9 simultaneously fills epoxy resin poured body, and the iron core 11 includes the silicon steel sheet 12 of multiple stackings, and multiple silicon steel sheets 12 are Stepped arrangement.

Further, the primary winding 8 is of coupled connections with secondary coil 10 by iron core 11.

Further, the height of the multiple silicon steel sheet 12 is successively decreased from centre to both ends, and the cross sectional shape of iron core 11 is approximately It is circular.

Further, the edges and corners rounding of silicon steel sheet 12.

Further, it is additionally provided with grounding pin 6 on the base 2.

Further, the secondary coil 10 passes through the grounding connection of grounding pin 6.

Further, the top of transformer casing 1 is provided with multiple antifouling work skirts 4.

Further, the transformer casing 1 is provided with the contact position of base 2 and contacts boss 7, and contact boss 7 bottom surface is smooth, To increase the contact area of transformer casing 1 and base 2, make the two contact fastening, it is difficult for drop-off.

Further, the top both ends of transformer casing 1 are respectively equipped with two binding posts, respectively binding post A With binding post B, transformer casing side is provided with least two outlet terminals, binding post connection primary winding, outlet terminal Connecting secondary coil.

Finally, it is to be noted that, herein, such as first and second or the like relational terms be used merely to by One entity or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or operation Between any this actual relation or order be present.Moreover, term " comprising ", "comprising" or its any other variant meaning Covering including for nonexcludability, so that process, method, article or equipment including a series of elements not only include that A little key elements, but also the other element including being not expressly set out, or also include for this process, method, article or The intrinsic key element of equipment.In the absence of more restrictions, the key element limited by sentence "including a ...", is not arranged Except other identical element in the process including the key element, method, article or equipment being also present.

Use above specific case is set forth to principle of the present utility model and embodiment, above example Illustrate that being only intended to help understands method and its core concept of the present utility model；Meanwhile for the general technology people of this area Member, according to thought of the present utility model, there will be changes in specific embodiments and applications, in summary, this Description should not be construed as to limitation of the present utility model.

Claims (9)

1. a kind of low magnetic density voltage transformer, it is characterised in that including transformer casing and base, the base is square thin Plate, transformer casing are fixedly connected directly over base and with base, and the transformer casing is that epoxy resin is integrally poured into a mould Shaping, the fixed cored, primary winding in transformer casing inside and secondary coil, the primary winding and secondary coil are wound Electrostatic sheild is provided with iron core, between primary winding and secondary coil and fills epoxy resin poured body, the iron core includes more The silicon steel sheet of individual stacking, multiple silicon steel sheets are stepped arrangement.

2. low magnetic density voltage transformer according to claim 1, it is characterised in that the primary winding leads to secondary coil Iron core is crossed to be of coupled connections.

3. low magnetic density voltage transformer according to claim 1, it is characterised in that the height of the multiple silicon steel sheet is therefrom Between successively decrease to both ends, core section shape is approximately circular.

4. low magnetic density voltage transformer according to claim 1, it is characterised in that silicon steel sheet edges and corners rounding.

5. low magnetic density voltage transformer according to claim 1, it is characterised in that be additionally provided with grounding lead on the base Pin.

6. low magnetic density voltage transformer according to claim 5, it is characterised in that the secondary coil passes through grounding pin Grounding connection.

7. low magnetic density voltage transformer according to claim 1, it is characterised in that be provided with the top of the transformer casing more Individual antifouling work skirt.

8. low magnetic density voltage transformer according to claim 1, it is characterised in that the transformer casing and base contacts Place is provided with contact boss.

9. low magnetic density voltage transformer according to claim 1, it is characterised in that both ends point at the top of the transformer casing Not She You two binding posts, respectively binding post A and binding post B, transformer casing side is provided with least two outlets Terminal, binding post connection primary winding, outlet terminal connecting secondary coil.