CN107731492A - A kind of power transformer - Google Patents

A kind of power transformer Download PDF

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Publication number
CN107731492A
CN107731492A CN201710847790.0A CN201710847790A CN107731492A CN 107731492 A CN107731492 A CN 107731492A CN 201710847790 A CN201710847790 A CN 201710847790A CN 107731492 A CN107731492 A CN 107731492A
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parts
transformer
oil
magnetic core
hours
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CN201710847790.0A
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CN107731492B (en
Inventor
罗杰
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Ningbo Yourjai Transformer Co., Ltd.
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罗杰
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/10—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on aluminium oxide
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/64—Burning or sintering processes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/02—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances
    • H01B3/12—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of inorganic substances ceramics
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3418—Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3427—Silicates other than clay, e.g. water glass
    • C04B2235/3463—Alumino-silicates other than clay, e.g. mullite
    • C04B2235/3481—Alkaline earth metal alumino-silicates other than clay, e.g. cordierite, beryl, micas such as margarite, plagioclase feldspars such as anorthite, zeolites such as chabazite
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Power Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Organic Insulating Materials (AREA)
  • Insulating Of Coils (AREA)
  • Housings And Mounting Of Transformers (AREA)

Abstract

A kind of power transformer, including transformer shell, the transformer base of transformer shell bottom, transformer shell top are provided with porcelain bushing, magnetic core and three groups of winding coils being wrapped on magnetic core are installed in transformer shell, there is insulating coating on winding coil, magnetic core is dipped in transformer oil, and transformer oil can improve the heat dispersion of product transformer and insulating properties ensure the service life of material；Transformer oil and insulated paint and porcelain bushing collective effect improve the insulating properties and resistance to elevated temperatures of transformer, ensure that the safe to use of transformer.

Description

A kind of power transformer
Technical field
The present invention relates to a kind of power transformer, belongs to transformer technology field.
Background technology
In peak of power consumption, transformer load can be significantly increased the distribution transformer run at present, even up to 1.5 times and , easily there is transformer overload scaling loss in above overload, more than 105 DEG C of transformer temperature rise (A class B insulations), at this stage oil immersed type Transformer coil insulated uses insulating materials, the transformer material that the class of insulation is low under longtime running or overload situations head more First it is burned off or aging, even if there is the high insulating materials of the class of insulation to play its effect in coil.
The content of the invention
A kind of power transformer, including transformer shell, the transformer base of transformer shell bottom, the installation of transformer shell top There is porcelain bushing, magnetic core and three groups of winding coils being wrapped on magnetic core are installed in transformer shell, had on winding coil exhausted Edge coating, magnetic core are dipped in transformer oil, and porcelain bushing material quality part includes：57 parts of aluminium vanadine, 26 parts of calcium sulphoaluminate, swelling Soil 23 parts, 18 parts of scolecite, quartz 14 parts, 3 parts of tin oxide, 2 parts of zircon, according to above-mentioned raw materials component carry out dispensing, mixing After carry out ball milling, Ball-milling Time 10 hours, after drying afterwards, blank is made in the molding that is mixed with water, by blank in 457 DEG C of burnings System 1.5 hours, afterwards raise temperature to 850-860 DEG C fire 4 hours, after furnace cooling, then carry out secondary firing, secondary firing 760 DEG C of temperature, secondary 2 hours firing times, insulating coating is to be coated to be formed by insulated paint, and insulated paint parts by weight include：Epoxy 48 parts of resin, 36 parts of vinyl trichlorosilane, 28 parts of flax oil alkyd resin, 23 parts of montmorillonite, 14 parts of mica, para hydroxybenzene sulphur 9 parts of acid, 3 parts of DOTP, 3 parts of polyester-imide, 2 parts of tbp, 9 parts of ethylenediamine, 70 parts of dimethylbenzene will be upper State that raw material is well mixed to obtain insulated paint, transformer oil parts by weight include：72 parts of paraffine base crude oil cut, 31 parts of dimethicone, 27 parts of olive oil, 8.9 parts of BTA, 4 parts of phosphorus benzene bis-acid potassium dibutyl ester, 3 parts of methyl acrylate, 3 parts of phosphate, polypropylene 2 parts of raw materials of acid amides are well mixed to be formed, and dynamic viscosity during 30 DEG C of transformer oil is 15-20 millimeters2/ the second.
A kind of described power transformer, porcelain bushing raw material include：(50 parts of aluminium vanadine), 20 parts of calcium sulphoaluminate, swelling 20 parts of soil, 10 parts of scolecite, 10 parts of quartz, 3 parts of tin oxide, 2 parts of zircon.
A kind of described power transformer, porcelain bushing raw material include：60 parts of aluminium vanadine, 30 parts of calcium sulphoaluminate, bentonite 30 parts, 20 parts of scolecite, quartz 15 parts, 3 parts of tin oxide, 2 parts of zircon.
A kind of described power transformer, porcelain bushing raw material include：55 parts of aluminium vanadine, 25 parts of calcium sulphoaluminate, bentonite 25 parts, 15 parts of scolecite, quartz 13 parts, 3 parts of tin oxide, 2 parts of zircon.
A kind of described power transformer, insulated paint parts by weight include：40 parts of epoxy resin, vinyl trichlorosilane 30 Part, 20 parts of flax oil alkyd resin, 20 parts of montmorillonite, 10 parts of mica, 5 parts of p-hydroxybenzenyl sulfonate, DOTP 3 Part, 3 parts of polyester-imide, 2 parts of tbp, 5 parts of ethylenediamine, 70 parts of dimethylbenzene.
A kind of described power transformer, insulated paint parts by weight include：50 parts of epoxy resin, vinyl trichlorosilane 40 Part, 30 parts of flax oil alkyd resin, 30 parts of montmorillonite, 20 parts of mica, 10 parts of p-hydroxybenzenyl sulfonate, DOTP 3 Part, 3 parts of polyester-imide, 2 parts of tbp, 10 parts of ethylenediamine, 70 parts of dimethylbenzene.
A kind of described power transformer, insulated paint parts by weight include：45 parts of epoxy resin, vinyl trichlorosilane 35 Part, 25 parts of flax oil alkyd resin, 25 parts of montmorillonite, 15 parts of mica, 7 parts of p-hydroxybenzenyl sulfonate, DOTP 3 Part, 3 parts of polyester-imide, 2 parts of tbp, 7 parts of ethylenediamine, 70 parts of dimethylbenzene.
A kind of described power transformer, transformer oil parts by weight include：70 parts of paraffine base crude oil cut, dimethicone 30 Part, 20 parts of olive oil, 8 parts of BTA, 4 parts of phosphorus benzene bis-acid potassium dibutyl ester, 3 parts of methyl acrylate, 3 parts of phosphate, poly- third 2 parts of acrylamide.
A kind of described power transformer, transformer oil parts by weight include：80 parts of paraffine base crude oil cut, dimethicone 40 Part, 30 parts of olive oil, 9 parts of BTA, 4 parts of phosphorus benzene bis-acid potassium dibutyl ester, 3 parts of methyl acrylate, 3 parts of phosphate, poly- third 2 parts of acrylamide.
A kind of described power transformer, transformer oil parts by weight include：75 parts of paraffine base crude oil cut, dimethicone 35 Part, 25 parts of olive oil, 8.5 parts of BTA, 4 parts of phosphorus benzene bis-acid potassium dibutyl ester, 3 parts of methyl acrylate, 3 parts of phosphate, gather 2 parts of acrylamide.
Foregoing invention content is relative to the beneficial effect of prior art：1）Porcelain bushing of the present invention has used aluminium vanadium Soil, calcium sulphoaluminate, bentonite and scolecite are that primary raw material carries out firing the intensity requirement that ensure that sleeve pipe twice, and are improved Insulating properties and weatherability；2）Epoxy resin, vinyl trichlorosilane, the insulated paint of composition is wanted based on flax oil alkyd resin Improve the insulating properties of winding coil and environmental protection save cost, 3）Transformer oil can improve the thermal diffusivity of product transformer The service life of material can be ensured with insulating properties；4）Transformer oil and insulated paint and porcelain bushing collective effect improve transformation The insulating properties and resistance to elevated temperatures of device, ensure that the safe to use of transformer.
Brief description of the drawings
Fig. 1 is power transformer schematic diagram.
Embodiment
A kind of power transformer as described in Figure 1, including transformer shell 1, the transformer base 2 of transformer shell bottom, transformation Device shell top is provided with porcelain bushing 3, and magnetic core 4 and three groups of winding coils 5 being wrapped on magnetic core are provided with transformer shell, around There is insulating coating on group coil（It is not shown）, magnetic core is dipped in transformer oil（It is not shown）In.
Embodiment 1
A kind of power transformer, including transformer shell, the transformer base of transformer shell bottom, transformer shell top are provided with pottery Porcelain bushing shell, magnetic core and three groups of winding coils being wrapped on magnetic core are installed in transformer shell, on winding coil there is insulation to apply Layer, magnetic core are dipped in transformer oil, and porcelain bushing material quality part includes：57 parts of aluminium vanadine, 26 parts of calcium sulphoaluminate, bentonite 23 Part, 18 parts of scolecite, quartz 14 parts, 3 parts of tin oxide, 2 parts of zircon, according to above-mentioned raw materials component carry out dispensing, mixing it is laggard Row ball milling, Ball-milling Time 10 hours, after drying afterwards, blank is made in the molding that is mixed with water, by blank in 457 DEG C of firings 1.5 hours, afterwards raise temperature to 850-860 DEG C fire 4 hours, after furnace cooling, then carry out secondary firing, it is secondary fire temperature 760 DEG C of degree, secondary 2 hours firing times, insulating coating is to be coated to be formed by insulated paint, and insulated paint parts by weight include：Asphalt mixtures modified by epoxy resin 48 parts of fat, 36 parts of vinyl trichlorosilane, 28 parts of flax oil alkyd resin, 23 parts of montmorillonite, 14 parts of mica, p-hydroxybenzenyl sulfonate 9 parts, 3 parts of DOTP, 3 parts of polyester-imide, 2 parts of tbp, 9 parts of ethylenediamine, 70 parts of dimethylbenzene will be above-mentioned Raw material is well mixed to obtain insulated paint, and transformer oil parts by weight include：72 parts of paraffine base crude oil cut, 31 parts of dimethicone, olive 27 parts of olive oil, 8.9 parts of BTA, 4 parts of phosphorus benzene bis-acid potassium dibutyl ester, 3 parts of methyl acrylate, 3 parts of phosphate, polyacrylamide 2 parts of raw materials of amine are well mixed to be formed, and dynamic viscosity during 30 DEG C of transformer oil is 15-20 millimeters2/ the second.

Claims (1)

1. a kind of power transformer, including transformer shell, the transformer base of transformer shell bottom, transformer shell top are provided with Porcelain bushing, magnetic core and three groups of winding coils being wrapped on magnetic core are installed in transformer shell, there is insulation on winding coil Coating, magnetic core are dipped in transformer oil, and porcelain bushing material quality part includes：57 parts of aluminium vanadine, 26 parts of calcium sulphoaluminate, bentonite 23 parts, 18 parts of scolecite, quartz 14 parts, 3 parts of tin oxide, 2 parts of zircon, according to above-mentioned raw materials component carry out dispensing, after mixing Ball milling is carried out, Ball-milling Time 10 hours, after drying afterwards, blank is made in the molding that is mixed with water, by blank in 457 DEG C of firings 1.5 hours, afterwards raise temperature to 850-860 DEG C fire 4 hours, after furnace cooling, then carry out secondary firing, it is secondary fire temperature 760 DEG C of degree, secondary 2 hours firing times, insulating coating is to be coated to be formed by insulated paint, and insulated paint parts by weight include：Asphalt mixtures modified by epoxy resin 48 parts of fat, 36 parts of vinyl trichlorosilane, 28 parts of flax oil alkyd resin, 23 parts of montmorillonite, 14 parts of mica, p-hydroxybenzenyl sulfonate 9 parts, 3 parts of DOTP, 3 parts of polyester-imide, 2 parts of tbp, 9 parts of ethylenediamine, 70 parts of dimethylbenzene will be above-mentioned Raw material is well mixed to obtain insulated paint, and transformer oil parts by weight include：72 parts of paraffine base crude oil cut, 31 parts of dimethicone, olive 27 parts of olive oil, 8.9 parts of BTA, 4 parts of phosphorus benzene bis-acid potassium dibutyl ester, 3 parts of methyl acrylate, 3 parts of phosphate, polyacrylamide 2 parts of raw materials of amine are well mixed to be formed, and dynamic viscosity during 30 DEG C of transformer oil is about 15-20 millimeters2/ the second.
CN201710847790.0A 2016-07-30 2016-07-30 A kind of power transformer Active CN107731492B (en)

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CN201610611779.XA CN106098333B (en) 2016-07-30 2016-07-30 A kind of power transformer
CN201710847790.0A CN107731492B (en) 2016-07-30 2016-07-30 A kind of power transformer

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DE102017221783A1 (en) 2017-12-04 2019-06-06 Siemens Aktiengesellschaft Arrangement and method for switching high voltages with a switching device and exactly one resistance stack

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JPH1179808A (en) * 1997-09-02 1999-03-23 Ube Ind Ltd Artificial aggregate and its production
CN2510967Y (en) * 2001-08-16 2002-09-11 李莉 Dry transformer winding
CN101454429A (en) * 2006-05-23 2009-06-10 西巴控股有限公司 Corrosion inhibiting composition for non-ferrous metals
CN102079945A (en) * 2009-11-26 2011-06-01 福保化学股份有限公司 Surge-withstanding insulating paint with flexibility and attrition resistance
CN103145992A (en) * 2013-03-20 2013-06-12 苏州太湖电工新材料股份有限公司 Vinyl silicon material as well as preparation method and application of vinyl silicon material in preparation of solventless insulating paint of high-temperature motor
CN104157397A (en) * 2014-08-12 2014-11-19 国家电网公司 Single-phase power transformer
CN204242733U (en) * 2014-12-10 2015-04-01 广发电器集团有限公司 Transformer
CN105505126A (en) * 2016-01-27 2016-04-20 富阳鸿祥技术服务有限公司 Preparation method of weather-resistant impregnating insulating paint for power transformer

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US7919017B2 (en) * 2007-11-12 2011-04-05 E. I. Du Pont De Nemours And Company Electrical insulation fluids for use in electrical apparatus
CN201374243Y (en) * 2009-01-16 2009-12-30 成都市温江区华蜀电器有限责任公司 Three-phase five-column rectifier transformer
CN102993939B (en) * 2012-11-30 2015-09-23 上海长润发涂料有限公司 A kind of polyurethane primer being applied to melamine plate
JP2015201560A (en) * 2014-04-09 2015-11-12 株式会社東芝 oil-filled transformer
CN104370536B (en) * 2014-10-28 2016-01-20 倪娟形 A kind of pottery of the increasing tougheness fire resistant special type for oil-burning machine cylinder body liner and preparation method thereof

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1179808A (en) * 1997-09-02 1999-03-23 Ube Ind Ltd Artificial aggregate and its production
CN2510967Y (en) * 2001-08-16 2002-09-11 李莉 Dry transformer winding
CN101454429A (en) * 2006-05-23 2009-06-10 西巴控股有限公司 Corrosion inhibiting composition for non-ferrous metals
CN102079945A (en) * 2009-11-26 2011-06-01 福保化学股份有限公司 Surge-withstanding insulating paint with flexibility and attrition resistance
CN103145992A (en) * 2013-03-20 2013-06-12 苏州太湖电工新材料股份有限公司 Vinyl silicon material as well as preparation method and application of vinyl silicon material in preparation of solventless insulating paint of high-temperature motor
CN104157397A (en) * 2014-08-12 2014-11-19 国家电网公司 Single-phase power transformer
CN204242733U (en) * 2014-12-10 2015-04-01 广发电器集团有限公司 Transformer
CN105505126A (en) * 2016-01-27 2016-04-20 富阳鸿祥技术服务有限公司 Preparation method of weather-resistant impregnating insulating paint for power transformer

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CN106098333B (en) 2017-11-10
CN107731492B (en) 2019-01-18

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