CN108269642A

CN108269642A - A kind of electric power low-loss dry-type transformer

Info

Publication number: CN108269642A
Application number: CN201810101100.1A
Authority: CN
Inventors: 沈宇杰
Original assignee: Suzhou Gaojing Tezhuan Information Technology Co Ltd
Current assignee: Rizhao Hongtai Jidian Accessories Co., Ltd.
Priority date: 2016-06-09
Filing date: 2016-06-09
Publication date: 2018-07-10
Anticipated expiration: 2036-06-09
Also published as: CN108053914A; CN105845194B; CN108053914B; CN108281214B; CN105845194A; CN108269642B; CN108281214A

Abstract

The invention belongs to transformer technology fields, more particularly, to a kind of electric power low-loss dry-type transformer, include low-voltage coil that is cored, being sleeved on outside iron core, the high-tension coil being sleeved on outside low-voltage coil, babinet, high-voltage leading-out wire, low pressure lead-out wire, bushing, low-tension bushing, low pressure enameled wire has been used in low-voltage coil, high pressure enameled wire has been used in high-tension coil；It is characterized in that, the low pressure enameled wire is made of conductor layer and the insulating lacquer layer being coated on outside conductor layer, and the cross section of conductor layer is rectangle, and the cross section of insulating lacquer layer is round, the cross-sectional area of insulating lacquer layer is 0.1~2.5 times of the cross-sectional area of conductor layer, and the conductor layer is by weight；The conductor layer and insulating lacquer layer are special materials.The present invention has following main advantageous effect：Transformer is light-weight, at low cost, transport and easy for installation, enameled wire enamelled coating adhesion strength are high and lower more resistant to high temperature, power consumption.

Description

A kind of electric power low-loss dry-type transformer

The application is entitled：A kind of dry-type transformer of low power consumption, the applying date be：On June 9th, 2016, application Number it is：201610401261.3 application for a patent for invention divisional application.

Technical field

The invention belongs to transformer technology field, more particularly, to a kind of electric power low-loss dry-type transformer.

Background technology

With the fast development of power industry, the usage amount of dry-type transformer increasingly increases.Dry type of the prior art becomes The conductor used in depressor mainly has a copper foil and enameled wire, and the conductive material in enameled wire is mainly copper, due to copper density compared with Greatly, therefore, the overall weight of transformer is heavier, and it is heavy metal, therefore price is more expensive；Due to the inherent feature of copper, because This, has higher requirement, therefore the material of enamelled coating also remains high for the paint of enameled wire.Therefore, demand has weight in industry The transformer that amount is lighter, cost is lower.

Invention content

To solve the above-mentioned problems, the purpose of the present invention is disclosing a kind of electric power low-loss dry-type transformer, it is to adopt It is realized with following technical scheme.

The present invention the 1st embodiment in, a kind of electric power low-loss dry-type transformer, comprising it is cored, be sleeved on iron core Outer low-voltage coil, the high-tension coil being sleeved on outside low-voltage coil, babinet, high-voltage leading-out wire, low pressure lead-out wire, bushing, Low-tension bushing has used low pressure enameled wire in low-voltage coil, high pressure enameled wire has been used in high-tension coil；It is characterized in that, institute It states low pressure enameled wire to be made of conductor layer and the insulating lacquer layer being coated on outside conductor layer, the cross section of conductor layer is round, insulation The cross section of enamelled coating is round, and the cross-sectional area of insulating lacquer layer is 0.1~1.5 times of the cross-sectional area of conductor layer, the conductor Layer by weight, is made of following raw material：20~30 parts of copper, 60~80 parts of aluminium, 2~4 parts of boron, 1~3 part of silicon, manganese 1~2 Part, 0.1~0.4 part of magnesium, silver 0.1~0.3 part, 0.1~0.2 part of zirconium, 0.1~0.2 part of chromium, 0.3~0.6 part of zinc, yttrium 0.1~ 0.2 part, 0.2~0.4 part of titanium, 0.1~0.2 part of beryllium, 0.1~0.2 part of rhenium, 0.1~0.3 part of tungsten, 0.1~0.3 part of gallium, wherein, In mass ratio, copper：Aluminium：Boron：Silicon：Manganese=1：（2~4）：(0.06~0.13):(0.03~0.15):(0.03~0.10)；It is described Insulating lacquer layer by weight, is made of following raw material：70~80 parts of dimethylacetylamide, 8~10 parts of ethyl alcohol, polyamic acid 7~9 parts, 2~4 parts of cobalt naphthenate, 1~3 part of mutual-phenenyl two acid bromide two alcohol ester, 5~10 parts of silicon carbide, diphenylmethane diisocyanates 8~14 parts of ester, 3~7 parts of poly- amino resins, nylon 6 or nylon 12：3~6 parts, 6~9 parts of ethyl acetate, butyl acetate 1~2 Part, 4~6 parts of the fireproof varnish of 3~5 parts of acetic acid, 10~15 parts of mica, 1~1.5 part of alundum (Al2O3), model G60-95, two 2~4 parts of dibutyl tin laurate.

The present invention the 2nd embodiment in, a kind of electric power low-loss dry-type transformer, comprising it is cored, be sleeved on iron core Outer low-voltage coil, the high-tension coil being sleeved on outside low-voltage coil, babinet, high-voltage leading-out wire, low pressure lead-out wire, bushing, Low-tension bushing has used low pressure enameled wire in low-voltage coil, high pressure enameled wire has been used in high-tension coil；It is characterized in that, institute It states low pressure enameled wire to be made of conductor layer and the insulating lacquer layer being coated on outside conductor layer, the cross section of conductor layer is rectangle, insulation The cross section of enamelled coating is round, and the cross-sectional area of insulating lacquer layer is 0.1~2.5 times of the cross-sectional area of conductor layer, the conductor Layer by weight, is made of following raw material：20~30 parts of copper, 60~80 parts of aluminium, 2~4 parts of boron, 1~3 part of silicon, manganese 1~2 Part, 0.1~0.4 part of magnesium, silver 0.1~0.3 part, 0.1~0.2 part of zirconium, 0.1~0.2 part of chromium, 0.3~0.6 part of zinc, yttrium 0.1~ 0.2 part, 0.2~0.4 part of titanium, 0.1~0.2 part of beryllium, 0.1~0.2 part of rhenium, 0.1~0.3 part of tungsten, 0.1~0.3 part of gallium, wherein, In mass ratio, copper：Aluminium：Boron：Silicon：Manganese=1：（2~4）：(0.06~0.13):(0.03~0.15):(0.03~0.10)；It is described Insulating lacquer layer by weight, is made of following raw material：70~80 parts of dimethylacetylamide, 8~10 parts of ethyl alcohol, polyamic acid 7~9 parts, 2~4 parts of cobalt naphthenate, 1~3 part of mutual-phenenyl two acid bromide two alcohol ester, 5~10 parts of silicon carbide, diphenylmethane diisocyanates 8~14 parts of ester, 3~7 parts of poly- amino resins, nylon 6 or nylon 12：3~6 parts, 6~9 parts of ethyl acetate, butyl acetate 1~2 Part, 4~6 parts of the fireproof varnish of 3~5 parts of acetic acid, 10~15 parts of mica, 1~1.5 part of alundum (Al2O3), model G60-95, two 2~4 parts of dibutyl tin laurate.

The present invention the 3rd embodiment in, a kind of electric power low-loss dry-type transformer, comprising it is cored, be sleeved on iron core Outer low-voltage coil, the high-tension coil being sleeved on outside low-voltage coil, babinet, high-voltage leading-out wire, low pressure lead-out wire, bushing, Low-tension bushing has used low pressure enameled wire in low-voltage coil, high pressure enameled wire has been used in high-tension coil；It is characterized in that, institute It states low pressure enameled wire to be made of conductor layer and the insulating lacquer layer being coated on outside conductor layer, the cross section of conductor layer is rectangle, insulation The cross section of enamelled coating is rectangle, and the cross-sectional area of insulating lacquer layer is 0.1~1.8 times of the cross-sectional area of conductor layer, the conductor Layer by weight, is made of following raw material：20~30 parts of copper, 60~80 parts of aluminium, 2~4 parts of boron, 1~3 part of silicon, manganese 1~2 Part, 0.1~0.4 part of magnesium, silver 0.1~0.3 part, 0.1~0.2 part of zirconium, 0.1~0.2 part of chromium, 0.3~0.6 part of zinc, yttrium 0.1~ 0.2 part, 0.2~0.4 part of titanium, 0.1~0.2 part of beryllium, 0.1~0.2 part of rhenium, 0.1~0.3 part of tungsten, 0.1~0.3 part of gallium, wherein, In mass ratio, copper：Aluminium：Boron：Silicon：Manganese=1：（2~4）：(0.06~0.13):(0.03~0.15):(0.03~0.10)；It is described Insulating lacquer layer by weight, is made of following raw material：70~80 parts of dimethylacetylamide, 8~10 parts of ethyl alcohol, polyamic acid 7~9 parts, 2~4 parts of cobalt naphthenate, 1~3 part of mutual-phenenyl two acid bromide two alcohol ester, 5~10 parts of silicon carbide, diphenylmethane diisocyanates 8~14 parts of ester, 3~7 parts of poly- amino resins, nylon 6 or nylon 12：3~6 parts, 6~9 parts of ethyl acetate, butyl acetate 1~2 Part, 4~6 parts of the fireproof varnish of 3~5 parts of acetic acid, 10~15 parts of mica, 1~1.5 part of alundum (Al2O3), model G60-95, two 2~4 parts of dibutyl tin laurate.

The present invention has following main advantageous effect：Transformer is light-weight, at low cost, transport and easy for installation, enameled wire Enamelled coating adhesion strength it is high and lower more resistant to high temperature, power consumption.

Description of the drawings

Fig. 1 is the cross-sectional structure schematic diagram of enameled wire used in embodiment 1 of the present invention.

Fig. 2 is the cross-sectional structure schematic diagram of enameled wire used in embodiment 2 of the present invention.

Fig. 3 is the cross-sectional structure schematic diagram of enameled wire used in embodiment 3 of the present invention.

Specific embodiment

Embodiment 1

Referring to Fig.1, a kind of electric power low-loss dry-type transformer, includes low-voltage coil that is cored, being sleeved on outside iron core, suit High-tension coil, babinet, high-voltage leading-out wire, low pressure lead-out wire, bushing, low-tension bushing outside low-voltage coil, low-voltage coil In used low pressure enameled wire, high pressure enameled wire has been used in high-tension coil；It is characterized in that, the low pressure enameled wire is by conductor Layer 1 and the insulating lacquer layer 2 being coated on outside conductor layer 1 are formed, and the cross section of conductor layer is round, and the cross section of insulating lacquer layer is round Shape, the cross-sectional area of insulating lacquer layer are 0.1~1.5 times of the cross-sectional area of conductor layer, the conductor layer by weight, by with Lower raw material are formed：20~30 parts of copper, 60~80 parts of aluminium, 2~4 parts of boron, 1~3 part of silicon, 1~2 part of manganese, 0.1~0.4 part of magnesium, silver 0.1~0.3 part, 0.1~0.2 part of zirconium, 0.1~0.2 part of chromium, 0.3~0.6 part of zinc, 0.1~0.2 part of yttrium, 0.2~0.4 part of titanium, 0.1~0.2 part of beryllium, 0.1~0.2 part of rhenium, 0.1~0.3 part of tungsten, 0.1~0.3 part of gallium, wherein, in mass ratio, copper：Aluminium：Boron： Silicon：Manganese=1：（2~4）：(0.06~0.13):(0.03~0.15):(0.03~0.10)；The insulating lacquer layer by weight, It is made of following raw material：70~80 parts of dimethylacetylamide, 8~10 parts of ethyl alcohol, 7~9 parts of polyamic acid, cobalt naphthenate 2~4 Part, 1~3 part of mutual-phenenyl two acid bromide two alcohol ester, 5~10 parts of silicon carbide, 8~14 parts of '-diphenylmethane diisocyanate, poly- amino tree 3~7 parts of fat, nylon 6 or nylon 12：3~6 parts, 6~9 parts of ethyl acetate, 1~2 part of butyl acetate, 3~5 parts of acetic acid, mica 10 ~15 parts, 1~1.5 part of alundum (Al2O3), model G60-95 4~6 parts of fireproof varnish, dibutyl tin laurate 2~4 Part.

Embodiment 2

See Fig. 2, a kind of electric power low-loss dry-type transformer includes low-voltage coil that is cored, being sleeved on outside iron core, suit High-tension coil, babinet, high-voltage leading-out wire, low pressure lead-out wire, bushing, low-tension bushing outside low-voltage coil, low-voltage coil In used low pressure enameled wire, high pressure enameled wire has been used in high-tension coil；It is characterized in that, the low pressure enameled wire is by conductor Layer 1 and the insulating lacquer layer 2 being coated on outside conductor layer 1 are formed, and the cross section of conductor layer is rectangle, and the cross section of insulating lacquer layer is round Shape, the cross-sectional area of insulating lacquer layer are 0.1~2.5 times of the cross-sectional area of conductor layer, the conductor layer by weight, by with Lower raw material are formed：20~30 parts of copper, 60~80 parts of aluminium, 2~4 parts of boron, 1~3 part of silicon, 1~2 part of manganese, 0.1~0.4 part of magnesium, silver 0.1~0.3 part, 0.1~0.2 part of zirconium, 0.1~0.2 part of chromium, 0.3~0.6 part of zinc, 0.1~0.2 part of yttrium, 0.2~0.4 part of titanium, 0.1~0.2 part of beryllium, 0.1~0.2 part of rhenium, 0.1~0.3 part of tungsten, 0.1~0.3 part of gallium, wherein, in mass ratio, copper：Aluminium：Boron： Silicon：Manganese=1：（2~4）：(0.06~0.13):(0.03~0.15):(0.03~0.10)；The insulating lacquer layer by weight, It is made of following raw material：70~80 parts of dimethylacetylamide, 8~10 parts of ethyl alcohol, 7~9 parts of polyamic acid, cobalt naphthenate 2~4 Part, 1~3 part of mutual-phenenyl two acid bromide two alcohol ester, 5~10 parts of silicon carbide, 8~14 parts of '-diphenylmethane diisocyanate, poly- amino tree 3~7 parts of fat, nylon 6 or nylon 12：3~6 parts, 6~9 parts of ethyl acetate, 1~2 part of butyl acetate, 3~5 parts of acetic acid, mica 10 ~15 parts, 1~1.5 part of alundum (Al2O3), model G60-95 4~6 parts of fireproof varnish, dibutyl tin laurate 2~4 Part.

Embodiment 3

See Fig. 3, a kind of electric power low-loss dry-type transformer includes low-voltage coil that is cored, being sleeved on outside iron core, suit High-tension coil, babinet, high-voltage leading-out wire, low pressure lead-out wire, bushing, low-tension bushing outside low-voltage coil, low-voltage coil In used low pressure enameled wire, high pressure enameled wire has been used in high-tension coil；It is characterized in that, the low pressure enameled wire is by conductor Layer 1 and the insulating lacquer layer 2 being coated on outside conductor layer 1 are formed, and the cross section of conductor layer is rectangle, and the cross section of insulating lacquer layer is square Shape, the cross-sectional area of insulating lacquer layer are 0.1~1.8 times of the cross-sectional area of conductor layer, the conductor layer by weight, by with Lower raw material are formed：20~30 parts of copper, 60~80 parts of aluminium, 2~4 parts of boron, 1~3 part of silicon, 1~2 part of manganese, 0.1~0.4 part of magnesium, silver 0.1~0.3 part, 0.1~0.2 part of zirconium, 0.1~0.2 part of chromium, 0.3~0.6 part of zinc, 0.1~0.2 part of yttrium, 0.2~0.4 part of titanium, 0.1~0.2 part of beryllium, 0.1~0.2 part of rhenium, 0.1~0.3 part of tungsten, 0.1~0.3 part of gallium, wherein, in mass ratio, copper：Aluminium：Boron： Silicon：Manganese=1：（2~4）：(0.06~0.13):(0.03~0.15):(0.03~0.10)；The insulating lacquer layer by weight, It is made of following raw material：70~80 parts of dimethylacetylamide, 8~10 parts of ethyl alcohol, 7~9 parts of polyamic acid, cobalt naphthenate 2~4 Part, 1~3 part of mutual-phenenyl two acid bromide two alcohol ester, 5~10 parts of silicon carbide, 8~14 parts of '-diphenylmethane diisocyanate, poly- amino tree 3~7 parts of fat, nylon 6 or nylon 12：3~6 parts, 6~9 parts of ethyl acetate, 1~2 part of butyl acetate, 3~5 parts of acetic acid, mica 10 ~15 parts, 1~1.5 part of alundum (Al2O3), model G60-95 4~6 parts of fireproof varnish, dibutyl tin laurate 2~4 Part.

A kind of electric power low-loss dry-type transformer described in any of the above-described embodiment, it is characterised in that the conductor Layer by weight, when being made of following raw material, the performance that can be optimal：25 parts of copper, 70 parts of aluminium, 3 parts of boron, 2 parts of silicon, manganese 1.5 parts, 0.25 part of magnesium, silver 0.2 part, 0.15 part of zirconium, 0.15 part of chromium, 0.45 part of zinc, 0.15 part of yttrium, 0.3 part of titanium, 0.15 part of beryllium, 0.15 part of rhenium, 0.2 part of tungsten, 0.2 part of gallium, wherein, in mass ratio, copper：Aluminium：Boron：Silicon：Manganese=1：2.8：0.12:0.08:0.06.

A kind of electric power low-loss dry-type transformer described in any of the above-described embodiment, it is characterised in that the insulation Enamelled coating by weight, when being made of following raw material, the performance that can be optimal：75 parts of dimethylacetylamide, 9 parts of ethyl alcohol, 8 parts of polyamic acid, 3 parts of cobalt naphthenate, 2 parts of mutual-phenenyl two acid bromide two alcohol ester, 7.5 parts of silicon carbide, '-diphenylmethane diisocyanate 11 parts, 5 parts of poly- amino resins, nylon 6 or nylon 12：4.5 parts, 4.5 parts of ethyl acetate, 1.5 parts of butyl acetate, 4 parts of acetic acid, cloud 3 parts of 5 parts of fireproof varnish, the dibutyl tin laurate of 12.5 parts female, 1.25 parts of alundum (Al2O3), model G60-95.

Zirconium is added in the present invention, in conductor layer and forms ZrAl with aluminium₃Compound hinders recrystallization process, refinement recrystallization Crystal grain；The conductivity that the silver of addition makes aluminium conjunction more greatly improves, and has approached the conductivity of copper；The addition of chromium, tungsten, titanium, zinc etc., greatly The big resistance to corrosion for improving conductor；Copper：Aluminium：Boron：Silicon：Manganese mass ratio is copper：Aluminium：Boron：Silicon：Manganese=1：（2~4）：(0.06 ~0.13):(0.03~0.15):(0.03~0.10), the intensity of conductor are much larger than the intensity of copper product, ensure that the strong of conductor 120 DEG C~250 DEG C when spending small by 40%~60%, similary environmental condition higher 70~90MPa than the intensity of fine aluminium, shrinkage ratio fine aluminium Between oxidation resistant probability than fine copper reduce by 300%~600%, similary environmental condition when 120 DEG C~250 DEG C between oxidation resistant machine Rate reduces by 90%~150% than fine aluminium；Resistivity is the Ω m of 0.01773 Ω m~0.01856 at 20 DEG C, and copper wire at 20 DEG C Nominal resistance rate be 0.01724 Ω m, 20 DEG C when aluminum steel nominal resistance rate be 0.0258 Ω m；Same current-carrying capacity, weight Amount is more substantially reduced than copper；During optimization formula, resistivity is reached for 0.01773 Ω m at 20 DEG C.

Therefore, the conductor layer material in the present invention has conductivity higher, and resistance to corrosion is stronger, intensity higher, cost It is lower；The advantages that weight is lighter, freight charges are lower, cheaper.

In the present invention, the special formulation of insulating lacquer layer so that it has more excellent adhesive property, and surface is smooth, insulation Thickness of paint layer be 0.05mm when, in the present invention conductor layer bond after, after 8 hours, cohesive force minimum value be 35g, continuous 150 DEG C, 720h experiment after enamelled coating without eyesight cracking, weight percent conversion volatile quantity≤0.35%；Insulating lacquer layer thickness is 0.10mm When, in the present invention conductor layer bond after, after 8 hours, cohesive force minimum value be 30g, continuous 150 DEG C, 720h experiment after paint Layer is without eyesight cracking, weight percent conversion volatile quantity≤0.50%；During using optimization formula, insulating lacquer layer thickness is 0.05mm When, in the present invention conductor layer bond after, after 8 hours, cohesive force minimum value be 45g, continuous 150 DEG C, 720h experiment after paint Layer is without eyesight cracking, weight percent conversion volatile quantity≤0.20%；When insulating lacquer layer thickness is 0.10mm, and in the present invention Conductor layer bond after, after 8 hours, cohesive force minimum value be 38g, continuous 150 DEG C, 720h experiment after enamelled coating without eyesight cracking, again Measure percentage conversion volatile quantity≤0.30%.

Therefore, the insulating lacquer layer in the present invention not only has preferable adhesion strength, but also with excellent high-temperature stable Property.

Due to the conductor layer in the present invention compared to aluminium conductor with relatively low resistivity, and approached with copper conductor, thus it is energy saving Effect is more notable, power consumption is lower.

Transformer in the present invention is light-weight, at low cost, transport and easy for installation, enameled wire enamelled coating adhesion strength it is high and It is lower more resistant to high temperature, power consumption.

The foregoing is merely the embodiment of the present invention, are not intended to limit the scope of the invention, every to utilize this hair The equivalent structure or equivalent flow shift that bright specification and accompanying drawing content are made directly or indirectly is used in other relevant skills Art field, is included within the scope of the present invention.

Claims

1. a kind of electric power low-loss dry-type transformer comprising low-voltage coil that is cored, being sleeved on outside iron core, is sleeved on low pressure High-tension coil, babinet, high-voltage leading-out wire, low pressure lead-out wire, bushing, low-tension bushing outside coil are used in low-voltage coil Low pressure enameled wire has used high pressure enameled wire in high-tension coil；It is characterized in that, the low pressure enameled wire is by conductor layer and packet The insulating lacquer layer overlayed on outside conductor layer is formed, and the cross section of conductor layer is rectangle, and the cross section of insulating lacquer layer is round, insulated paint The cross-sectional area of layer is 0.1~2.5 times of cross-sectional area of conductor layer, the conductor layer by weight, by following raw material It forms：20~30 parts of copper, 60~80 parts of aluminium, 2~4 parts of boron, 1~3 part of silicon, 1~2 part of manganese, 0.1~0.4 part of magnesium, silver 0.1~0.3 Part, 0.1~0.2 part of zirconium, 0.1~0.2 part of chromium, 0.3~0.6 part of zinc, 0.1~0.2 part of yttrium, 0.2~0.4 part of titanium, beryllium 0.1~ 0.2 part, 0.1~0.2 part of rhenium, 0.1~0.3 part of tungsten, 0.1~0.3 part of gallium, wherein, in mass ratio, copper：Aluminium：Boron：Silicon：Manganese=1：（2~4）：(0.06~0.13):(0.03~0.15):(0.03~0.10)；The insulating lacquer layer by weight, by following original Material is formed：70~80 parts of dimethylacetylamide, 8~10 parts of ethyl alcohol, 7~9 parts of polyamic acid, 2~4 parts of cobalt naphthenate, to benzene 1~3 part of dioctyl phthalate butanediol ester, 5~10 parts of silicon carbide, 8~14 parts of '-diphenylmethane diisocyanate, poly- amino resins 3~7 Part, nylon 6 or nylon 12：3~6 parts, 6~9 parts of ethyl acetate, 1~2 part of butyl acetate, 3~5 parts of acetic acid, mica 10~15 Part, 2~4 parts of 4~6 parts of fireproof varnish, the dibutyl tin laurate of 1~1.5 part of alundum (Al2O3), model G60-95.

2. a kind of electric power low-loss dry-type transformer comprising low-voltage coil that is cored, being sleeved on outside iron core, is sleeved on low pressure High-tension coil, babinet, high-voltage leading-out wire, low pressure lead-out wire, bushing, low-tension bushing outside coil are used in low-voltage coil Low pressure enameled wire has used high pressure enameled wire in high-tension coil；It is characterized in that, the low pressure enameled wire is by conductor layer and packet The insulating lacquer layer overlayed on outside conductor layer is formed, and the cross section of conductor layer is rectangle, and the cross section of insulating lacquer layer is round, insulated paint The cross-sectional area of layer is 0.1~2.5 times of cross-sectional area of conductor layer, the conductor layer by weight, by following raw material It forms：25 parts of copper, 70 parts of aluminium, 3 parts of boron, 2 parts of silicon, 1.5 parts of manganese, 0.25 part of magnesium, 0.2 part of silver, 0.15 part of zirconium, 0.15 part of chromium, zinc 0.45 part, 0.15 part of yttrium, 0.3 part of titanium, 0.15 part of beryllium, 0.15 part of rhenium, 0.2 part of tungsten, 0.2 part of gallium, wherein, in mass ratio, copper： Aluminium：Boron：Silicon：Manganese=1：2.8：0.12:0.08:0.06；The insulating lacquer layer by weight, is made of following raw material：Diformazan 70~80 parts of yl acetamide, 8~10 parts of ethyl alcohol, 7~9 parts of polyamic acid, 2~4 parts of cobalt naphthenate, mutual-phenenyl two acid bromide two alcohol ester 1~3 part, 5~10 parts of silicon carbide, 8~14 parts of '-diphenylmethane diisocyanate, 3~7 parts of poly- amino resins, nylon 6 or nylon 12：3~6 parts, 6~9 parts of ethyl acetate, 1~2 part of butyl acetate, 3~5 parts of acetic acid, 10~15 parts of mica, alundum (Al2O3) 1~ 1.5 parts, 2~4 parts of 4~6 parts of fireproof varnish, the dibutyl tin laurate of model G60-95.

3. a kind of electric power low-loss dry-type transformer comprising low-voltage coil that is cored, being sleeved on outside iron core, is sleeved on low pressure High-tension coil, babinet, high-voltage leading-out wire, low pressure lead-out wire, bushing, low-tension bushing outside coil are used in low-voltage coil Low pressure enameled wire has used high pressure enameled wire in high-tension coil；It is characterized in that, the low pressure enameled wire is by conductor layer and packet The insulating lacquer layer overlayed on outside conductor layer is formed, and the cross section of conductor layer is rectangle, and the cross section of insulating lacquer layer is round, insulated paint The cross-sectional area of layer is 0.1~2.5 times of cross-sectional area of conductor layer, the conductor layer by weight, by following raw material It forms：20~30 parts of copper, 60~80 parts of aluminium, 2~4 parts of boron, 1~3 part of silicon, 1~2 part of manganese, 0.1~0.4 part of magnesium, silver 0.1~0.3 Part, 0.1~0.2 part of zirconium, 0.1~0.2 part of chromium, 0.3~0.6 part of zinc, 0.1~0.2 part of yttrium, 0.2~0.4 part of titanium, beryllium 0.1~ 0.2 part, 0.1~0.2 part of rhenium, 0.1~0.3 part of tungsten, 0.1~0.3 part of gallium, wherein, in mass ratio, copper：Aluminium：Boron：Silicon：Manganese=1：（2~4）：(0.06~0.13):(0.03~0.15):(0.03~0.10)；The insulating lacquer layer by weight, by following original Material is formed：75 parts of dimethylacetylamide, 9 parts of ethyl alcohol, 8 parts of polyamic acid, 3 parts of cobalt naphthenate, mutual-phenenyl two acid bromide two alcohol ester 2 Part, 7.5 parts of silicon carbide, 11 parts of '-diphenylmethane diisocyanate, 5 parts of poly- amino resins, nylon 6 or nylon 12：4.5 parts, acetic acid 4.5 parts of ethyl ester, 1.5 parts of butyl acetate, 4 parts of acetic acid, 12.5 parts of mica, 1.25 parts of alundum (Al2O3), model G60-95 it is anti- Fiery 5 parts of varnish, 3 parts of dibutyl tin laurate.

4. a kind of electric power low-loss dry-type transformer comprising low-voltage coil that is cored, being sleeved on outside iron core, is sleeved on low pressure High-tension coil, babinet, high-voltage leading-out wire, low pressure lead-out wire, bushing, low-tension bushing outside coil are used in low-voltage coil Low pressure enameled wire has used high pressure enameled wire in high-tension coil；It is characterized in that, the low pressure enameled wire is by conductor layer and packet The insulating lacquer layer overlayed on outside conductor layer is formed, and the cross section of conductor layer is rectangle, and the cross section of insulating lacquer layer is round, insulated paint The cross-sectional area of layer is 0.1~2.5 times of cross-sectional area of conductor layer, the conductor layer by weight, by following raw material It forms：25 parts of copper, 70 parts of aluminium, 3 parts of boron, 2 parts of silicon, 1.5 parts of manganese, 0.25 part of magnesium, 0.2 part of silver, 0.15 part of zirconium, 0.15 part of chromium, zinc 0.45 part, 0.15 part of yttrium, 0.3 part of titanium, 0.15 part of beryllium, 0.15 part of rhenium, 0.2 part of tungsten, 0.2 part of gallium, wherein, in mass ratio, copper： Aluminium：Boron：Silicon：Manganese=1：2.8：0.12:0.08:0.06；The insulating lacquer layer by weight, is made of following raw material：Diformazan 75 parts of yl acetamide, 9 parts of ethyl alcohol, 8 parts of polyamic acid, 3 parts of cobalt naphthenate, 2 parts of mutual-phenenyl two acid bromide two alcohol ester, silicon carbide 7.5 Part, 11 parts of '-diphenylmethane diisocyanate, 5 parts of poly- amino resins, nylon 6 or nylon 12：4.5 parts, 4.5 parts of ethyl acetate, vinegar 1.5 parts of acid butyl ester, 4 parts of acetic acid, 12.5 parts of mica, 1.25 parts of alundum (Al2O3), 5 parts of the fireproof varnish of model G60-95, two 3 parts of dibutyl tin laurate.