CN203931750U - A kind of amorphous alloy transformer that can bear high overload - Google Patents
A kind of amorphous alloy transformer that can bear high overload Download PDFInfo
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- CN203931750U CN203931750U CN201420312566.3U CN201420312566U CN203931750U CN 203931750 U CN203931750 U CN 203931750U CN 201420312566 U CN201420312566 U CN 201420312566U CN 203931750 U CN203931750 U CN 203931750U
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- Prior art keywords
- amorphous alloy
- transformer
- iron core
- winding
- high overload
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 229910000808 amorphous metal alloy Inorganic materials 0.000 title claims abstract description 35
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000004804 winding Methods 0.000 claims abstract description 33
- 238000009413 insulation Methods 0.000 claims abstract description 27
- 229920000784 Nomex Polymers 0.000 claims abstract description 26
- 239000004763 nomex Substances 0.000 claims abstract description 26
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052802 copper Inorganic materials 0.000 claims abstract description 11
- 239000010949 copper Substances 0.000 claims abstract description 11
- 239000011889 copper foil Substances 0.000 claims abstract description 6
- 210000003298 dental enamel Anatomy 0.000 claims abstract description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 239000002828 fuel tank Substances 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- 239000004593 Epoxy Substances 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 239000002480 mineral oil Substances 0.000 abstract description 4
- 235000010446 mineral oil Nutrition 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 14
- 235000019198 oils Nutrition 0.000 description 14
- 239000010410 layer Substances 0.000 description 6
- 239000002585 base Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000010754 BS 2869 Class F Substances 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 150000008430 aromatic amides Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005662 electromechanics Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
Landscapes
- Housings And Mounting Of Transformers (AREA)
Abstract
The utility model relates to a kind of amorphous alloy transformer that can bear high overload, comprise housing and be arranged on the folder in described housing, in described housing, be sealed with dielectric, flash-point 160 degree of described dielectric, on described folder, clamping has the amorphous alloy iron core of four frame five posts, on described iron core, cover has winding, the high-pressure side of described winding adopts copper cash, described copper cash is 180 grades of enamel insulated round copper wire, the low-pressure end of described winding adopts Copper Foil coiling, the high-pressure side of described winding and the insulation of the end of low-pressure end are NHN insulating paper, and layer insulation is Nomex paper.The beneficial effect that a kind of amorphous alloy transformer that can bear high overload that adopts the utility model to provide brings is: iron core of the present utility model is by the mix insulation mode of iron core and winding, and fill high-quality mineral oil with flash-point 160 degree to solve the high overload problem of transformer, make this transformer when power consumption sharply increases, transformer can not burn because of overload, improves the overload capacity of transformer.
Description
Technical field
The utility model relates to a kind of amorphous alloy transformer that can bear high overload.
Background technology
The load of electrical network is widely different in different regions, and big city, industrial area power consumption is large, network load is high, conventionally selects high power capacity distribution transformer.Vast rural area, power consumption from far-off regions are for a long time in low load levels, conventionally the distribution transformer capacity of selecting is between 50～160kVA, and festivals or holidays (the particularly Spring Festival), power consumption is than sharply increasing at ordinary times, and conventional transformer will burn because of overload.Based on Transformers for Rural Networks, for a long time in light load, the long-time serious overladen present situation of stage (as the Spring Festival), require distribution transformer to there is stronger overload capacity.
Utility model content
Technical problem to be solved in the utility model is to overcome the deficiency of above-mentioned prior art, and a kind of amorphous alloy transformer that can bear high overload is provided.
The main technical schemes that a kind of amorphous alloy transformer that can bear high overload providing according to the utility model adopts is: comprise housing and be arranged on the folder in described housing, insulation fuel tank is installed on the outer wall of described housing, in described insulation fuel tank, be sealed with dielectric, flash-point 160 degree of described dielectric, on described folder, clamping has the amorphous alloy iron core of four frame five posts, on described iron core, cover has winding, the high-pressure side of described winding adopts copper cash, described copper cash is 180 grades of enamel insulated round copper wire, the low-pressure end of described winding adopts Copper Foil coiling, the high-pressure side of described winding and the insulation of the end of low-pressure end are NHN insulating paper, layer insulation is Nomex paper, in the high-pressure side of described winding, be provided with oil duct, described oil duct supports described Nomex paper by 3240 epoxy glass fabric stays and forms.
A kind of amorphous alloy transformer that can bear high overload that the utility model provides also can have following additional technical feature:
Described iron core comprises two large frame iron cores and two little frame iron cores, and two described large frame iron cores are arranged between two described little frame iron cores.
Described folder comprises two transverse slats and the side plate that is arranged on described transverse slat two ends, and described iron core is clamped in the space of two described transverse slats and the formation of described side plate.
On described transverse slat, pressing plate is installed, described pressing plate compresses described iron core.
On described transverse slat, to both sides, extend and have base, described pressing plate is arranged on described base.
Between adjacent two iron cores and between described side plate and described iron core, be provided with space bar, described space bar clamps described iron core.
Described pressing plate and or described space bar adopt 3240 epoxy resin bonded fibers.
Between described dielectric and described insulation fuel tank, be formed with air cushion.
The thickness of described air cushion is 70mm-100mm.
On the outer wall of described housing, be also provided with corrugate fin, the thickness of described fin is 1.4mm-1.8mm.
The beneficial effect that a kind of amorphous alloy transformer that can bear high overload that adopts the utility model to provide brings is: iron core of the present utility model adopts four frame five posts, and employing amorphous alloy strips, than silicon steel sheet, it has the low feature of specific loss, and four frame five posts are lower than three frame three posts cost in small capacity transformer, wherein winding adopts the coated multilayer copper wire winding of NHN insulating paper, and the resistant to elevated temperatures H level of coiling oil resistant Nomex paper between every layer of copper cash, by the mix insulation mode of above-mentioned iron core and winding, and fill high-quality mineral oil with flash-point 160 degree to solve the high overload problem of transformer, make this transformer when power consumption sharply increases, transformer can not burn because of overload, improve the overload capacity of transformer,
Between transverse slat and side plate and iron core and between iron core and iron core, pressing plate and space bar are being set respectively, iron core is firmly clamped in the space of transverse slat and side plate formation, reduce as much as possible transformer and due to what iron core may exist, clamp not strongly the solid noise producing in the course of the work, adopt the corrugate fin of strengthening thickness, air-cooled radiating mode, solve the heat dissipation problem that transformer produces because of overload, improved the radiating effect of transformer.
Accompanying drawing explanation
Fig. 1 is the structure chart that the utility model can bear the amorphous alloy transformer of high overload.
Fig. 2 is that the utility model can bear cut-away view in the amorphous alloy transformer of high overload.
Fig. 3 is for bearing the structure chart of iron core in the amorphous alloy transformer of high overload for the utility model.
Fig. 4 is the structure chart that the utility model can bear winding in the amorphous alloy transformer of high overload.
Fig. 5 is the three-dimensional structure diagram that the utility model can bear winding in the amorphous alloy transformer of high overload.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figures 1 to 5, a kind of embodiment that can bear the amorphous alloy transformer of high overload providing according to the utility model, comprise housing 1 and be arranged on the folder 2 in described housing 1, in described housing 1, be sealed with dielectric, flash-point 160 degree of described dielectric, on described folder 2, clamping has the amorphous alloy iron core 4 of four frame five posts, on described iron core 4, be wound with winding 5, the high-pressure side of described winding 5 adopts copper cash, described copper cash is 180 grades of enamel insulated round copper wire 52, the low-pressure end of described winding 5 adopts Copper Foil coiling, the high-pressure side of described winding 5 and the insulation of the end of low-pressure end are NHN insulating paper 51, layer insulation is Nomex paper 53, in the high-pressure side of described winding, be provided with oil duct 54, described oil duct 54 supports described Nomex paper 53 by 3240 epoxy glass fabric stays 55 and forms.Iron core 4 of the present utility model adopts four frame five posts, and employing amorphous alloy strips, than silicon steel sheet, it has the low feature of specific loss, and four frame five posts are lower than three frame three posts cost in small capacity transformer, wherein winding 5 adopts coated multilayer copper cash 52 coilings of NHN insulating paper 51, and the resistant to elevated temperatures H level of coiling oil resistant Nomex paper 53 between every layer of copper cash 52, by the mix insulation mode of above-mentioned iron core 4 and winding 5, and fill with flash-point 160 degree dielectrics to solve the high overload problem of transformer, make this transformer when power consumption sharply increases, transformer can not burn because of overload, improve the overload capacity of transformer.
Transformer plays and changes voltage effect, is civilian, therefore be divided into high-pressure side and low-pressure end by the high-voltage variable of electrical network.High-pressure side adopts Copper Foil, and layer insulation adopts Nomex paper, and end insulation adopts HNH, with Copper Foil together coiling; On the winding basis that low-pressure end is made at high voltage winding cover around, adopt copper wire winding, end insulation adopts HNH to be positioned over end, in the interlayer position through calculating, places oil duct.Oil duct adopts 3240 expoxy glass plates and nomex paper conversion to form, and 3240 expoxy glass plates are cut into strip and stick on nomex above, plays a part to support, gain in strength and dispel the heat
NHN insulating paper is by the composite flexible material that Nomex1 paper (Dupont paper) forms, thermal endurance class is H level (180 ℃) on middle one deck polyimide film and two sides thereof, there is good mechanical performance, as the anti-tear performance of tensile strength and edge and good electrical strength. its surface smoothing, when producing when low voltage motor is used automatic winding inserter, can guarantee that fault-free NHN is mainly used between the groove of high-fire resistance energy motor, groove covers and phase insulation, also can be used as in addition the layer insulation of transformer or other electrical equipment;
Nomex paper claims again promise U.S. paper, a kind of synthetic aromatic amides polymer insulation paper, there is higher mechanical performance, flexibility and good electrical performance, and can at higher temperature, keep its characteristic, be widely used in generator, transformer, electric equipment, electromechanics and household electrical appliance.
Nomex paper has following eight large characteristics:
1. intrinsic dielectric strength
The short time voltage field intensity of the Nomex insulating paper product ability 18～40KV/mm processing through press polish, without further processing with varnish and resin; Because Nomex product has low dielectric constant, thereby make the Electric Field Distribution between insulation and coolant more even;
2. mechanical tenacity
Nomex insulating paper intensity after press polish is very high, and elasticity, tear resistance and resistance to abrasion are all good, and thinner product has pliability;
3. thermal stability
Nomex insulating paper has the approval of 220 ℃ of UL material temperature grades, even if representative is placed at 220 ℃ continuously, can remain valid performance more than 10 years;
4. chemical compatibility
Nomex insulating paper is not subject to the impact of most of solvents substantially, and very acid and alkali resistance corrosion.It is easily compatible with all varnish, adhesive, transformer liquid, lubricating oil and cold Frozen agent.In addition, Nomex insulating paper also can not destroyed by insect, fungi and mould;
5. cryogenic property
Under the boiling point (77K) of nitrogen, the tensile strength of Nomex insulating paper T410 and NOMEX993,994 type laminated sheets all surpasses the intensity level under room temperature;
6. pair humidity is insensitive
Nomex insulating paper is when spending wet 95% mutually, and its dielectric strength is 90% under bone dry state, and meanwhile, in fact a lot of mechanical performances make moderate progress;
7. radiation hardness
Even the intensity that ionization is penetrated reaches 800 Megarads (8,000,000 gray(Gy)), Nomex insulating paper is also substantially unaffected, and after the radiation of 8 this kind of dosage, still keeps it to have machinery and electric property;
8. nontoxic/resistance to combustion
Nomex insulating paper can not produce any known toxic reaction .NOMEX insulating paper to human or animal and not melt in air, not combustion-supporting. and in the time of 220 ℃, its limited oxygen index (LOI) is greater than 20.8 (general empty burning critical values), so its .Nomex insulating paper that can not burn meets the resistance to combustion requirement of UL94V-0 regulation.
Referring to Fig. 1 to Fig. 5, in the embodiment of the amorphous alloy transformer that can bear high overload providing according to the utility model, described iron core 4 comprises two large frame iron cores 41 and two little frame iron cores 42, two described large frame iron cores 41 are arranged between two described little frame iron cores 42, the utility model sets gradually four blocks of iron 4, and it is lower than three frame three posts cost in small capacity transformer that the ordering of iron core 4 is set to little frame iron core 42, large frame iron core 41, large frame iron core 41, little frame iron core 42, four frame five posts.
Referring to Fig. 1 to Fig. 5, in the embodiment of the amorphous alloy transformer that can bear high overload providing according to the utility model, described folder 2 comprises two transverse slats 21 and the side plate 22 that is arranged on described transverse slat 21 two ends, described iron core 4 is clamped in the space of two described transverse slats 21 and 22 formation of described side plate, on described transverse slat 21, to both sides, extend and have base 23, on described base 23, pressing plate 24 is installed, described pressing plate 24 compresses described iron core 4, between adjacent two iron cores 4 and between described side plate 22 and described iron core 4, be provided with space bar 25, described space bar 25 clamps described iron core 4, between transverse slat 21 and side plate 22 and iron core 4 and between iron core 4 and iron core 4, pressing plate 24 and space bar 25 are being set respectively, iron core 4 is firmly clamped in the space of transverse slat 21 and side plate 22 formation, reduce as much as possible transformer and due to what iron core may exist, clamp not strongly the solid noise producing in the course of the work.
Referring to Fig. 1 to Fig. 5, in the embodiment of the amorphous alloy transformer that can bear high overload providing according to the utility model, one or both in described pressing plate 24 and described space bar 25 adopt 3240 epoxy resin bonded fibers, and under middle temperature, mechanical performance is high, and at high temperature electric property is stable.Be applicable to high insulation system parts for machinery, electrical equipment and electronics, there is the good thermal endurance of high machinery and dielectric property and moisture resistivity, between described dielectric and described insulation fuel tank 3, be formed with air cushion 31, described dielectric adopts flash-point higher than the mineral oil of 150 degree, by temperature rise test, verify, 150 degree can meet instructions for use, and the thickness of described air cushion 31 is 70mm-100mm, be chosen as 75mm, 77mm, 80mm, 82mm, 85mm, the performance of the mineral oil that the utility model is mentioned:
The performance of table 1 transformer silicon oil oil
The performance of table 2 macromolecule hydrocarbon transformer oil
The performance of the synthetic ester transformer oil of table 3
The performance of table 4 vegetable oil transformer oil
High overload transformer oil buying technical indicator
Referring to Fig. 1 to Fig. 5, in the embodiment of the amorphous alloy transformer that can bear high overload providing according to the utility model, on the outer wall of described housing 1, be also provided with corrugate fin 6, the thickness of described fin 6 is 1.4mm-1.8mm, be chosen as 1.6mm, 1.65mm, 1.7mm, 1.75mm, 1.5mm preferably, than conventional 1.2mm, adopt the corrugate fin 6 of strengthening thickness, air-cooled radiating mode, solved the heat dissipation problem that transformer produces because of overload, improve the radiating effect of transformer, meet high overload distribution transformer and can bear 1.5 times of overloads 3 hours, 1.75 times of overloads 1.5 hours, 2 times of overloads requirement of 1 hour, in addition, minute wiring of drawing of winding adopts aramid fiber paper tape, use the A class F insulation of conventional crimped paper to bring up to H class F insulation the class of insulation of winding.
Claims (10)
1. the amorphous alloy transformer that can bear high overload, comprise housing and be arranged on the folder in described housing, in described housing, be sealed with dielectric, it is characterized in that: flash-point 160 degree of described dielectric, on described folder, clamping has the amorphous alloy iron core of four frame five posts, on described iron core, cover has winding, the high-pressure side of described winding adopts copper cash, described copper cash is 180 grades of enamel insulated round copper wire, the low-pressure end of described winding adopts Copper Foil coiling, the high-pressure side of described winding and the insulation of the end of low-pressure end are NHN insulating paper, layer insulation is Nomex paper, in the high-pressure side of described winding, be provided with oil duct, described oil duct supports described Nomex paper by 3240 epoxy glass fabric stays and forms.
2. the amorphous alloy transformer that can bear high overload according to claim 1, is characterized in that: described iron core comprises two large frame iron cores and two little frame iron cores, and two described large frame iron cores are arranged between two described little frame iron cores.
3. the amorphous alloy transformer that can bear high overload of stating according to claim 2, is characterized in that: described folder comprises two transverse slats and the side plate that is arranged on described transverse slat two ends, and described iron core is clamped in the space of two described transverse slats and the formation of described side plate.
4. the amorphous alloy transformer that can bear high overload according to claim 3, is characterized in that: on described transverse slat, pressing plate is installed, described pressing plate compresses described iron core.
5. the amorphous alloy transformer that can bear high overload according to claim 4, is characterized in that: described transverse slat extends and has base to both sides, and described pressing plate is arranged on described base.
6. the amorphous alloy transformer that can bear high overload according to claim 3, is characterized in that: between adjacent two iron cores and between described side plate and described iron core, be provided with space bar, described space bar clamps described iron core.
7. the amorphous alloy transformer that can bear high overload according to claim 6, is characterized in that: described pressing plate and or described space bar adopt 3240 epoxy resin bonded fibers.
8. according to the amorphous alloy transformer that can bear high overload described in claim 1-7 any one, it is characterized in that: between described dielectric and described insulation fuel tank, be formed with air cushion.
9. the amorphous alloy transformer that can bear high overload according to claim 8, is characterized in that: the thickness of described air cushion is 70mm-100mm.
10. according to the amorphous alloy transformer that can bear high overload described in claim 1-7 any one, it is characterized in that: on the outer wall of described housing, be also provided with corrugate fin, the thickness of described fin is 1.4mm-1.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420312566.3U CN203931750U (en) | 2014-06-12 | 2014-06-12 | A kind of amorphous alloy transformer that can bear high overload |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420312566.3U CN203931750U (en) | 2014-06-12 | 2014-06-12 | A kind of amorphous alloy transformer that can bear high overload |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203931750U true CN203931750U (en) | 2014-11-05 |
Family
ID=51827523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420312566.3U Expired - Lifetime CN203931750U (en) | 2014-06-12 | 2014-06-12 | A kind of amorphous alloy transformer that can bear high overload |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203931750U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104616867A (en) * | 2015-02-12 | 2015-05-13 | 扬州华鼎电器有限公司 | Energy-saving totally-sealed type high-overload oil-immersed distribution transformer |
| CN104795222A (en) * | 2015-04-27 | 2015-07-22 | 常州特种变压器有限公司 | High overload capacity distribution transformer |
| CN105989998A (en) * | 2015-03-02 | 2016-10-05 | 江西变电设备有限公司 | High-overload high-temperature-resistant oil-immersed transformer |
| CN110289767A (en) * | 2019-07-23 | 2019-09-27 | 哈尔滨理工大学 | A kind of low-loss commutator transformer of high no-load voltage ratio |
-
2014
- 2014-06-12 CN CN201420312566.3U patent/CN203931750U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104616867A (en) * | 2015-02-12 | 2015-05-13 | 扬州华鼎电器有限公司 | Energy-saving totally-sealed type high-overload oil-immersed distribution transformer |
| CN105989998A (en) * | 2015-03-02 | 2016-10-05 | 江西变电设备有限公司 | High-overload high-temperature-resistant oil-immersed transformer |
| CN104795222A (en) * | 2015-04-27 | 2015-07-22 | 常州特种变压器有限公司 | High overload capacity distribution transformer |
| CN110289767A (en) * | 2019-07-23 | 2019-09-27 | 哈尔滨理工大学 | A kind of low-loss commutator transformer of high no-load voltage ratio |
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Granted publication date: 20141105 |
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