CN201278275Y

CN201278275Y - Tinned three layer insulated winding for transformer

Info

Publication number: CN201278275Y
Application number: CNU2008201543522U
Authority: CN
Inventors: 沈刚; 方澄秋
Original assignee: Shanghai Chuanye Electronic Science and Technology Co Ltd
Current assignee: Shanghai Chuanye Electronic Science and Technology Co Ltd
Priority date: 2008-10-22
Filing date: 2008-10-22
Publication date: 2009-07-22
Anticipated expiration: 2018-10-22

Abstract

The utility model relates to a tinned triple-layer insulated winding cable for a transformer, which comprises a copper conductor, a tinned layer, two polyphenyl thioether insulation layers and a polyamide resin layer. The tinned layer is plated outside the copper conductor; the two polyphenyl thioether insulation layers are sequentially extruded outside the tinned layer; and the polyamide resin layer is extruded outside the two polyphenyl thioether insulation layers. Compared with the prior art, the utility model improves the thermal rating to F grade (155 DEG C), a transformer and a high-frequency winding coil which adopt the tinned triple-layer insulated winding cable are safe and reliable, has high stability, and can obviously reduce the leakage inductance and the distributed capacitance, and sufficiently improves the high-frequency characteristic and the anti-interference performance of the transformer.

Description

The zinc-plated three-layer insulated winding wires that is used for transformer

Technical field

The utility model belongs to the three-layer insulated winding wires technical field, and it is applied to transformer and the high frequency winding coil that safety standard meets UL1950, IEC60950, relates in particular to a kind of zinc-plated three-layer insulated winding wires that is used for transformer.

Background technology

Be used in the three-layer insulated winding wires on the transformer at present, be made up of copper conductor, two layers polyester insulation and the insulation of outer polyamide, this class three layer insulation wire thermal endurance class is E level (120 ℃) and B level (130 ℃).Along with the development trend of electronics, telecommunication, power-supply device, the temperature resistant grade of E level (120 ℃), B level (130 ℃) can not satisfy the requirement of safety, reliable, stability, the three-layer insulated winding wires that also active demand thermal endurance class of market is higher.

The utility model content

The purpose of this utility model is exactly to provide a kind of thermal endurance class the higher zinc-plated three-layer insulated winding wires that is used for transformer for the deficiency that overcomes above-mentioned prior art existence.

The purpose of this utility model can be achieved through the following technical solutions:

The zinc-plated three-layer insulated winding wires that is used for transformer, it is characterized in that, comprise copper conductor, tin coating, two-layer polyphenylene sulfide insulating layer, polyamide layer, described tin coating is plated on the copper conductor outside, described two-layer polyphenylene sulfide insulating layer extrudes successively in the tin coating outside, and described polyamide layer extrudes in two-layer polyphenylene sulfide insulating layer outside.

The specification of described copper conductor is Φ 0.20～1.00mm.

Compared with prior art, thermal endurance class of the present utility model reaches F level (155 ℃), adopt transformer of the present utility model and high frequency winding coil safe and reliable, stable high, simultaneously, adopt transformer of the present utility model owing to saved interlayer insulating film and inner frame plate washer, make primary and secondary winding close coupling, but transformer reduced volume 1/2 and 1/3 weight, can reduce fee of material and processing charges, and obviously reduce leakage inductance and distributed capacitance, significantly improved the high frequency characteristics and the anti-interference of transformer.

Description of drawings

Fig. 1 is the zinc-plated three-layer insulated winding wires structural representation that is used for transformer.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

As shown in Figure 1, a kind of zinc-plated three-layer insulated winding wires that is used for transformer, comprise copper conductor 1, tin coating 2, two-layer polyphenylene sulfide insulating layer 3, polyamide layer 4, described tin coating 2 is plated on copper conductor 1 outside, described two-layer polyphenylene sulfide insulating layer 3 extrudes successively in tin coating 2 outsides, and described polyamide layer 4 extrudes in two-layer polyphenylene sulfide insulating layer 3 outside.

Use Φ 3mm copper bar after the wire drawing machine drawing-down, to anneal and be coated with tin, by three plastic extruding machines of 30 types two-layer polyphenylene sulfide insulating layer 3 and polyamide insulating barrier 4 are extruded in tin-coated copper conductor outside then.

The performance that is used for the zinc-plated three-layer insulated winding wires of transformer is:

(1) production specification scope: 0.20～1.00mm;

(2) temperature resistant grade F level (155 ℃);

(3) since the Sn electronic structure to be arranged as (2,8,18,18,4) outermost electron be 4, and the Cu electronic structure be (2,8,18,1) outermost electron is 1, so its anti-interference of tin-coated copper conductor and high frequency are all good than copper conductor;

(4) tinned wird is better than fine copper lead non-oxidizability, so F level (155 ℃) conductor must use tinned wird;

(5) voltage-resistent characteristic is good, and puncture voltage obtains heavy insulation (test voltage=3000Vrms, evaluation 1min) greater than 15kV;

(6) need not just can directly weld by peeling outer layer 420 ℃≤3S of solderability;

(7) good resistance to wear and surface smoothness, confficient of static friction≤0.133;

(8) chemically-resistant solvent and impregnating varnish performance are good.

The GPX-F three-layer insulated winding wires and the common GPX-B three-layer insulated winding wires performance that are used for transformer are more as shown in table 1.

Table 1

Claims

1. the zinc-plated three-layer insulated winding wires that is used for transformer, it is characterized in that, comprise copper conductor, tin coating, two-layer polyphenylene sulfide insulating layer, polyamide layer, described tin coating is plated on the copper conductor outside, described two-layer polyphenylene sulfide insulating layer extrudes successively in the tin coating outside, and described polyamide layer extrudes in two-layer polyphenylene sulfide insulating layer outside.

2. the zinc-plated three-layer insulated winding wires that is used for transformer according to claim 1 is characterized in that the specification of described copper conductor is Ф 0.20～1.00mm.