CN219610198U - Precision-adjustable transformer - Google Patents

Abstract

The utility model relates to the technical field of transformers, in particular to an accuracy-adjustable transformer. The utility model provides an adjustable precision transformer which is characterized in that a plurality of wiring ports are arranged on a primary coil and a secondary coil. When the transformer is used, the negative electrode of a power supply or a load is connected with different wiring ports on the coil through the adjusting connector lug, so that the coil number of the coil finally connected into the transformer is different. Specifically, the number of turns of the primary coil and the secondary coil connected to the transformer can be adjusted. The proportion range of the primary coil and the secondary coil is enlarged when the transformer is used, so that the current range which can be obtained is larger, the accuracy of the obtained current range is higher, and the transformer has the characteristic of better applicability.

Description

Precision-adjustable transformer

Technical Field

The utility model relates to the technical field of transformers, in particular to an accuracy-adjustable transformer.

Background

The current transformer is common equipment for measuring current intensity, and comprises a single-current-ratio current transformer, a multi-current-ratio current transformer and a multi-iron-core current transformer; the number of turns of the primary winding and the secondary winding of the single-current ratio transformer is fixed, the current ratio cannot be changed, only one current ratio transformation can be realized, and the transformer has a narrow application range due to the fixed current ratio.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model aims to provide the precision adjustable transformer which has the characteristic of adjustable current ratio during use.

The technical scheme adopted by the utility model is as follows: the precision-adjustable transformer comprises an iron core, and a primary coil and a secondary coil which are wound on the iron core; a plurality of primary wiring ports are equidistantly arranged from the starting point to the end point of the primary coil, and the primary wiring ports are sequentially marked as M1, M2 and M3 … … Mn from one side of the starting point; a first-stage positive electrode connector lug and a first-stage adjusting connector lug are respectively arranged on the starting point and the end point of the first-stage coil; a plurality of secondary wiring ports are equidistantly arranged from the starting point to the end point of the secondary coil, and the secondary wiring ports are sequentially marked as N1, N2 and N3 … … Nn from one side of the starting point; a second-stage positive electrode connector lug and a second-stage adjusting connector lug are respectively arranged on the starting point and the end point of the second-stage coil; the first-stage adjusting connector lug and the second-stage adjusting connector lug are wire-lapping clamps.

Furthermore, the iron core is made of cold-rolled silicon steel sheets, iron-nickel alloys or iron-based super-microcrystalline alloys, and the materials have better magnetic properties.

Further, the core is a laminated core, a wound core or an open core, which is a physical composition form of the core.

Further, the primary coil and the secondary coil are both made of metal wires with insulating encapsulation on the outer layers. Specifically, the size and total winding number of the cross section of the metal wire adopted by the primary coil and the secondary coil are determined according to practical situations.

Further, the primary wiring port and the secondary wiring port are both metal wires which are arranged on the metal wires, are connected with metal in the metal wires and are provided with insulating layers.

Further, after the primary coil and the secondary coil are wound on the iron core, a protective shell is arranged outside the iron core.

The beneficial effects are that:

the utility model provides an adjustable precision transformer which is characterized in that a plurality of wiring ports are arranged on a primary coil and a secondary coil. When the transformer is used, the negative electrode of a power supply or a load is connected with different wiring ports on the coil through the adjusting connector lug, so that the coil number of the coil finally connected into the transformer is different. Specifically, the number of turns of the primary coil and the secondary coil connected to the transformer can be adjusted. The proportion range of the primary coil and the secondary coil is enlarged when the transformer is used, so that the current range which can be obtained is larger, the accuracy of the obtained current range is higher, and the transformer has the characteristic of better applicability.

Drawings

FIG. 1 is a schematic diagram of a precision adjustable transformer of the present utility model;

fig. 2 is an external view schematically showing an adjustable precision transformer according to the present utility model.

The Fe-iron core, the 1-primary coil, the 11-primary wiring port, the 12-primary positive electrode connector lug, the 13-primary adjusting connector lug, the 2-secondary coil, the 21-secondary wiring port, the 22-secondary positive electrode connector lug and the 23-secondary adjusting connector lug;

wherein the protective shell is not shown in fig. 2.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which are obtained by a person skilled in the art based on the embodiments of the utility model, fall within the scope of protection of the utility model.

The precision adjustable transformer shown in fig. 1 and 2 comprises an iron core Fe, a primary coil 1 and a secondary coil 2 which are wound on the iron core Fe; a plurality of primary wiring ports 11 are equidistantly arranged from the starting point to the end point of the primary coil 1, and the primary wiring ports 11 are sequentially marked as M1, M2, M3 and M4 from one side of the starting point; a first-stage positive electrode connector lug 12 and a first-stage adjusting connector lug 13 are respectively arranged at the starting point and the end point of the first-stage coil 1; a plurality of secondary wiring ports 21 are equidistantly arranged from the starting point to the end point of the secondary coil 2, and the secondary wiring ports 21 are sequentially marked as N1, N2, N3 and N4 from one side of the starting point; a secondary positive electrode lug 22 and a secondary adjusting lug 23 are respectively arranged at the starting point and the end point of the secondary coil 2; the primary adjusting connector lug 13 and the secondary adjusting connector lug 23 are both wire-lapping clamps.

It should be noted that, as shown in fig. 2, the equidistance here does not refer to the length distance of the wire of the coil, but means that one wire connection port is provided every several turns (2 turns in this embodiment).

In the embodiment, the iron core Fe is made of iron-nickel alloy, so that the magnetic focusing performance is better.

In this embodiment, the iron-nickel alloy is made into a wound core.

In this embodiment, the primary coil 1 and the secondary coil 2 each use a metal wire having an insulating encapsulation on the outer layer. Specifically, the cross-sectional areas of the metal wires used for the primary coil 1 and the secondary coil 2 are equal, and the total number of winding turns is also equal.

In the present embodiment, the primary wiring port 11 and the secondary wiring port 21 are each a metal wire provided on a metal wire, connected to a metal in the metal wire, having an insulating layer. And the number of the primary wiring ports and the secondary wiring ports is 4.

In this embodiment, after the iron core Fe is wound with the primary coil 1 and the secondary coil 2, a protective case is further provided outside the iron core.

When the precision adjustable transformer is used, the primary positive electrode connector lug 12 of the primary coil 1 is connected with the positive electrode of an original power supply, and the secondary positive electrode connector lug 21 of the secondary coil 2 is connected with the positive electrode of one end of a load; the negative electrode of the primary coil 1 is connected through a primary adjusting connector lug 13, and specifically, the primary adjusting connector lug 13 is used for connecting the primary wiring port 11; similarly, the negative electrode of the secondary coil 2 is connected to the secondary connection port 22 through the secondary adjustment connector 23. And the primary adjusting connector lug 13 or the secondary adjusting connector lug 23 is connected to the primary wiring port 11 or the secondary wiring port 21 respectively according to actual conditions. Because the number of the primary wiring ports 11 and the secondary wiring ports 21 is 4, the original negative electrode is added, and the proportion of the primary coil to the secondary coil is 1:1,1:2,1:3,1:4,1:5,2:1,2:3,2:5,3:1,3:2,3:4,3:5,4:1,4:3,4:5,5:1,5:2, 5:5; the ratio of 3 to 5 to 4 to 5 to 1 has a larger ratio range, and the application range of the transformer is enlarged.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (6)

1. The utility model provides an adjustable mutual-inductor of precision, includes the iron core, winding primary coil and secondary coil on the iron core, its characterized in that: a plurality of primary wiring ports are equidistantly arranged from the starting point to the end point of the primary coil, and the primary wiring ports are sequentially marked as M1, M2 and M3 … … Mn from one side of the starting point; a first-stage positive electrode connector lug and a first-stage adjusting connector lug are respectively arranged on the starting point and the end point of the first-stage coil; a plurality of secondary wiring ports are equidistantly arranged from the starting point to the end point of the secondary coil, and the secondary wiring ports are sequentially marked as N1, N2 and N3 … … Nn from one side of the starting point; a second-stage positive electrode connector lug and a second-stage adjusting connector lug are respectively arranged on the starting point and the end point of the second-stage coil; the first-stage adjusting connector lug and the second-stage adjusting connector lug are wire-lapping clamps.

2. The precision adjustable transformer of claim 1, wherein: the iron core is made of cold-rolled silicon steel sheet, iron-nickel alloy or iron-based super-microcrystalline alloy.

3. The precision adjustable transformer of claim 1, wherein: the iron core adopts a laminated iron core, a wound iron core or an open iron core.

4. The precision adjustable transformer of claim 1, wherein: the primary coil and the secondary coil are both made of metal wires with insulating encapsulation on the outer layers.

5. The precision adjustable transformer of claim 4, wherein: the primary wiring port and the secondary wiring port are both metal wires which are arranged on the metal wires, are connected with metal in the metal wires and are provided with insulating layers.

6. The precision adjustable transformer of claim 1, wherein: still including setting up the protective housing outside the iron core.