CN203966657U - Aluminium alloy core medium voltage frequency converter private cable - Google Patents
Aluminium alloy core medium voltage frequency converter private cable Download PDFInfo
- Publication number
- CN203966657U CN203966657U CN201420361188.8U CN201420361188U CN203966657U CN 203966657 U CN203966657 U CN 203966657U CN 201420361188 U CN201420361188 U CN 201420361188U CN 203966657 U CN203966657 U CN 203966657U
- Authority
- CN
- China
- Prior art keywords
- aluminium alloy
- layer
- frequency converter
- medium voltage
- voltage frequency
- Prior art date
- 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 - Fee Related
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 75
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910052751 metal Inorganic materials 0.000 claims abstract description 31
- 239000002184 metal Substances 0.000 claims abstract description 31
- 229910052802 copper Inorganic materials 0.000 claims abstract description 21
- 239000010949 copper Substances 0.000 claims abstract description 21
- 239000004020 conductor Substances 0.000 claims abstract description 20
- 230000004888 barrier function Effects 0.000 claims abstract description 13
- 238000000926 separation method Methods 0.000 claims abstract description 11
- 238000002955 isolation Methods 0.000 claims abstract description 9
- 239000004745 nonwoven fabric Substances 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims description 3
- 229910052736 halogen Inorganic materials 0.000 claims description 3
- 150000002367 halogens Chemical class 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000005452 bending Methods 0.000 abstract description 3
- 238000006056 electrooxidation reaction Methods 0.000 abstract description 3
- 239000004743 Polypropylene Substances 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Insulated Conductors (AREA)
Abstract
A kind of aluminium alloy core medium voltage frequency converter private cable, comprise many aluminium alloy cable cores, it is characterized in that: every aluminium alloy cable core comprises aluminium alloy conductor, insulating barrier, phase-splitting metal screen layer and electrical isolation layer from inside to outside, described phase-splitting metal screen layer comprise dredge around copper wire layer and the wrapped copper strips layer of reverse copper band gap; Between many described aluminium alloy cable core gaps, be provided with packed layer, be provided with successively from inside to outside belting layer, the total screen of metal, separation sleeve, armour and outer jacket outward at many aluminium alloy cable cores and packed layer.This cable both can ensure to possess excellent power supply quality and Electro Magnetic Compatibility, had again good bending property, easy convenient feature of laying, and was suitable for being applied in the power transmission of medium voltage frequency converter and the occasion of the complicated and easy electrochemical corrosion of electromagnetism.
Description
Technical field
The utility model relates to a kind of converter cable, relate in particular to a kind of aluminium alloy core medium voltage frequency converter private cable, be specially adapted to ac rated voltage 8.7/15kV and following, in medium voltage converter system, support the use as power transmission cable or stube cable and middle pressure transformer.
Background technology
In recent years, copper core low-voltage variable frequency cable, comparative maturity of low-voltage variable frequency fire-resisting cable technology, and be applied widely, and the process structure of cable for current medium voltage converter system, almost still mainly adopt copper material as power line core conductor, the production cost of copper core conductor structure is higher, meanwhile, the scarcity of copper resource, renewable speed have become undisputable fact slowly, so " with aluminium for copper " becomes ground zero and hot technology that cable industry further develops.In addition, because producing harmonic wave, frequency converter there is to external world interference, the use of frequency converter causes very important pollution to circuit, electric power transfer quality between frequency converter and variable-frequency motor is declined, need in medium voltage converter system, make necessary improvement and adjustment as the structure of power transmission cable or stube cable and the matching used cable of middle pressure transformer to traditional.
Summary of the invention
In order to overcome the defect of above-mentioned prior art, the purpose of this utility model is to provide a kind of aluminium alloy core medium voltage frequency converter private cable, its driving force transmission capacity and copper core cable are suitable, can also effectively reduce electrochemical corrosion risk, there is low insulation loss, high resistance electromagnetic interference, low eddy current loss and the strong feature of crooking ability, lightweight, easily lay, the life-span is long, its usage economy is high, and environment friendly and pollution-free.
The utility model provides a kind of aluminium alloy core medium voltage frequency converter private cable, comprise many aluminium alloy cable cores, every aluminium alloy cable core comprises aluminium alloy conductor 1, insulating barrier 2, phase-splitting metal screen layer 3 and electrical isolation layer 4 from inside to outside, described phase-splitting metal screen layer 3 comprise dredge around copper wire layer and the wrapped copper strips layer of reverse copper band gap; Between many described aluminium alloy cable core gaps, be provided with packed layer 5, outside many aluminium alloy cable cores and packed layer 5, be provided with successively from inside to outside belting layer 6, the total screen 7 of metal, separation sleeve 8, armour 9 and outer jacket 10.
Further, more than 1 rare earth aluminium alloy silk of described aluminium alloy conductor is circular stranded presses annealing and makes.
Further, described insulating barrier 2 is co-extruded by semiconductive internal shield, crosslinked polyetylene insulated layer and semiconductive outer shielding layer.
Further, described aluminium alloy core medium voltage frequency converter private cable comprises 3 aluminium alloy cable cores, and 3 described aluminium alloy cable cores are arranged in a triangle.
Further, described belting layer 6 is overlapping or the wrapped non-hygroscopic PE nonwoven fabric belts outside many aluminium alloy cable cores and packed layer 5 in gap.
Further, the outer overlapping wrapped copper strips of described belting layer 6 forms the total screen 7 of metal.
Further, the PVC separation sleeve of described separation sleeve 8 for extruding outside the total screen 7 of metal.
Further, described armour 9 is made up of self-locking lock armo in aluminum alloy strip.
Further, PVC sheath or the low smoke and zero halogen plastic sheath of described outer jacket 10 for extruding outside armour 9.
The advantage that the technical scheme of cable of the present utility model is given prominence to compared to existing technology comprises:
Replace copper conductor with aluminium alloy conductor, when guaranteeing that cable power supply ability and copper cable are suitable, can reduce cable weight approximately 30%, and creep resistant and electrochemical corrosion ability are strong, use cost reduces approximately more than 30%, lightweight, be easy to transport and mounting and installation, can effectively avoid being oxidized degradation limitation under the passage section bringing because of copper wire simultaneously, because aluminum-alloy wire is in the time that oxidation occurs, surface can form the aluminium oxide antioxygen layer of thin layer, avoids the inner oxidation that continues.
Because medium voltage converter cable work electric pressure is high, modulation frequency is large, high order harmonic component stack frequency and amplitude are large, and electronic component is all light current control around cable, the magnetic field that the electric field of frequency change can change, the electromagnetic field of these variations can pollute light current control unit around, therefore metal screen layer of the present utility model adopts concentric conductor to dredge around+wrapped phase-splitting metallic shield the mode of reverse copper band gap, make cable earth wire and main line become coaxial configuration, reach homogenizing electric field action, can effectively solve the impact of pulse voltage on cable, significantly improve the anti-interference of frequency-changing cable.
In addition, the setting of the chain armouring of aluminum alloy strip makes cable have good bending property and resistance to compression impact resistance, in addition, chain armouring can disperse the lateral pressure of cable, has ensured that cable is suffering bending, flattens, reverse while waiting distortion, relative position between heart yearn and sheath remains unchanged, and can not produce short circuit, also can not affect electric property.
Adopt the total shielding of metal to make cable have good anti-electromagnetic interference, not only the metal screen layer of cable but also armour all adopt nonmagnetic metal aluminum alloy strip, and version is interior self-locking type, can weaken the eddy current loss effect that common steel band armoring tape comes.
Brief description of the drawings
Fig. 1 is the overall structure schematic diagram of aluminium alloy core medium voltage frequency converter private cable of the present utility model.
In figure: 1-aluminium alloy conductor, 2-insulating barrier, 3-phase-splitting metal screen layer, 4-electrical isolation layer, 5-packed layer, 6-belting layer, the total screen of 7-metal, 8-separation sleeve, 9-armour, 10-outer jacket.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further, following examples are only for the technical solution of the utility model is more clearly described, and can not limit protection range of the present utility model with this.
Aluminium alloy core medium voltage frequency converter private cable of the present utility model as shown in Figure 1, comprise 3 aluminium alloy cable cores, every aluminium alloy cable core comprises aluminium alloy conductor 1, insulating barrier 2, phase-splitting metal screen layer 3 and electrical isolation layer 4 from inside to outside, described phase-splitting metal screen layer 3 comprise dredge around copper wire layer and the wrapped copper strips layer of reverse copper band gap; Between many described aluminium alloy cable core gaps, be provided with packed layer 5, outside many aluminium alloy cable cores and packed layer 5, be provided with successively from inside to outside belting layer 6, the total screen 7 of metal, separation sleeve 8, armour 9 and outer jacket 10.
As shown in Figure 1, aluminium alloy conductor 1 presses annealing and forms through circle is stranded for many rare earth aluminium alloy silks, the outer 10kV level crosslinked polyethylene insulation material that extrudes electrical property excellence of aluminium alloy conductor 1 forms insulating barrier, inside and outside insulating barrier, also can form semiconductive shielding layer according to the wrapped semiconductive nylon tape of cross-sectional area of conductor, be the outer three-layer co-extruded technique that adopts maturation of aluminium alloy conductor 1, the semiconductive outer shielding layer that the semiconductive internal shield that co-extrusion semiconductive nylon tape forms, crosslinked polyetylene insulated layer and semiconductive nylon tape form forms insulating barrier 2, forms insulated wire cores.Insulated wire cores adopt outward copper wire dredge around copper wire layer and the wrapped copper strips layer of reverse copper band gap form phase-splitting metal screen layer 3, form electrical isolation layer 4 at the outer wrapped polypropylene PP band of phase-splitting metal screen layer 3, making phase-splitting metal screen layer 3 and three-phase master core is that 3 aluminium alloy cable cores form coaxial cable core structure.Between 3 aluminium alloy cable core spaces, can adopt fan-shaped foam filled to fill formation packed layer 5, the overlapping or wrapped formation belting layer 6 in gap at the outer employing non-hygroscopic of packed layer 5 PE nonwoven fabric belts; The outer employing copper strips of belting layer 6 is overlapping wrapped, is the total screen 7 of metal; The total shielding 7 of metal is outer extrudes PVC material, is inner sheath 8; In the non magnetic aluminum alloy strip of the outer employing of inner sheath 8, the chain armouring of self-locking type forms armour 9; The outer material that extrudes PVC or low smoke and zero halogen plastics or have property of armour 9 is as oversheath 10.
Aluminium alloy core medium voltage converter fire-resisting cable of the present utility model is specially adapted to press high-power frequency conversion motor in rated voltage 6～35kV, being connected between frequency converter and medium voltage converter motor, not only can meet the use in above-mentioned place, can effectively reduce more than 30% production cost simultaneously, more alleviate the weight of cable, be convenient to transport and mounting and installation.
The manufacture process of aluminium alloy core medium voltage frequency converter private cable of the present utility model is described referring to Fig. 1.
First aluminum-alloy wire is strandedly pressed and is annealed into aluminium alloy conductor 1 through circular, outside aluminium alloy conductor 1, have by semiconductive internal shield, crosslinked polyetylene insulated layer and semiconductive outer shielding layer three-layer co-extruded become insulating barrier 2, aluminium alloy conductor 1 and insulating barrier 2 form insulated wire cores.Adopt copper wire to dredge around+oppositely wrapped formation the phase-splitting of copper strips metal screen layer 3 outward in insulated wire cores, then at it outside wrapped polypropylene PP band formation electrical isolation layer 4; Aluminium alloy conductor 1, insulating barrier 2, phase-splitting metal screen layer 3 and electrical isolation layer 4 form aluminium alloy cable core.When being three-phase master core stranding, three aluminium alloy cable cores form belting layer 6 at the wrapped PE nonwoven fabric belts of aluminium alloy cable core external series gap, in cable core gap between electrical isolation layer 4 and the belting layer 6 of aluminium alloy cable core, place PP foam filled simultaneously, can adopt fan-shaped foam filled to fill formation packed layer 6, form the total shielding 7 of metal at the outer overlapping wrapped one deck copper strips of belting layer 6; Outside the total shielding 7 of metal, extrude one deck separation sleeve 8; At the outer armour 9 that the chain armouring of self-locking type in aluminum alloy strip is set of separation sleeve 8; According to cable laying environment, can increase one deck oversheath 10.Such cable has lower-wattage loss, good machinery, electrical insulation properties and Electro Magnetic Compatibility, and construction of cable weight is laid easily, and economy is high, is applicable to supporting the use with middle pressure transformer.
What should be understood that is; the above; it is only preferred embodiment of the present utility model; not in order to limit the utility model; every foundation technical spirit of the present utility model to any trickle amendment made for any of the above embodiments, be equal to replace and improve, within all should being included in the protection range of technical solutions of the utility model.
Claims (9)
1. an aluminium alloy core medium voltage frequency converter private cable, comprise many aluminium alloy cable cores, it is characterized in that: every aluminium alloy cable core comprises aluminium alloy conductor (1), insulating barrier (2), phase-splitting metal screen layer (3) and electrical isolation layer (4) from inside to outside, described phase-splitting metal screen layer (3) comprise dredge around copper wire layer and the wrapped copper strips layer of reverse copper band gap; Between many described aluminium alloy cable core gaps, be provided with packed layer (5), outside many aluminium alloy cable cores and packed layer (5), be provided with successively from inside to outside belting layer (6), the total screen of metal (7), separation sleeve (8), armour (9) and outer jacket (10).
2. aluminium alloy core medium voltage frequency converter private cable according to claim 1, is characterized in that: many rare earth aluminium alloy silks of described aluminium alloy conductor (1) are circular stranded to press annealing and make.
3. aluminium alloy core medium voltage frequency converter private cable according to claim 1, is characterized in that: described insulating barrier (2) is co-extruded by semiconductive internal shield, crosslinked polyetylene insulated layer and semiconductive outer shielding layer.
4. aluminium alloy core medium voltage frequency converter private cable according to claim 1, is characterized in that: described aluminium alloy core medium voltage frequency converter private cable comprises 3 aluminium alloy cable cores, and 3 described aluminium alloy cable cores are arranged in a triangle.
5. aluminium alloy core medium voltage frequency converter private cable according to claim 1, is characterized in that: described belting layer (6) is the overlapping or wrapped non-hygroscopic PE nonwoven fabric belts outside many aluminium alloy cable cores and packed layer (5) in gap.
6. aluminium alloy core medium voltage frequency converter private cable according to claim 1, is characterized in that: the outer overlapping wrapped copper strips of described belting layer (6) forms the total screen of metal (7).
7. aluminium alloy core medium voltage frequency converter private cable according to claim 1, is characterized in that: the PVC separation sleeve of described separation sleeve (8) for extruding outside the total screen of metal (7).
8. aluminium alloy core medium voltage frequency converter private cable according to claim 1, is characterized in that: described armour (9) is made up of self-locking lock armo in aluminum alloy strip.
9. aluminium alloy core medium voltage frequency converter private cable according to claim 1, is characterized in that: PVC sheath or the low smoke and zero halogen plastic sheath of described outer jacket (10) for extruding outside armour (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420361188.8U CN203966657U (en) | 2014-07-01 | 2014-07-01 | Aluminium alloy core medium voltage frequency converter private cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420361188.8U CN203966657U (en) | 2014-07-01 | 2014-07-01 | Aluminium alloy core medium voltage frequency converter private cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203966657U true CN203966657U (en) | 2014-11-26 |
Family
ID=51927211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420361188.8U Expired - Fee Related CN203966657U (en) | 2014-07-01 | 2014-07-01 | Aluminium alloy core medium voltage frequency converter private cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203966657U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104867604A (en) * | 2015-05-11 | 2015-08-26 | 国家电网公司 | Medium voltage flame-retardant frequency-conversion power cable |
| CN105244093A (en) * | 2015-10-30 | 2016-01-13 | 苏俊兰 | Wear-resistant low-smoke environmental protection device |
| CN105702350A (en) * | 2016-04-27 | 2016-06-22 | 丹阳正联知识产权运营管理有限公司 | Waterproof variable frequency cable with low electromagnetism and resistant to interference |
| CN105938738A (en) * | 2016-05-26 | 2016-09-14 | 合肥中海信息科技有限公司 | Variable frequency cable for silver-copper alloy conductor aerospace |
| CN106531413A (en) * | 2016-12-20 | 2017-03-22 | 北京北广科技股份有限公司 | Winding method of high-frequency and high-power transformer |
| WO2020164085A1 (en) * | 2019-02-15 | 2020-08-20 | 佛山市顺德区伊戈尔电力科技有限公司 | Wire for use in transformer winding and transformer |
-
2014
- 2014-07-01 CN CN201420361188.8U patent/CN203966657U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104867604A (en) * | 2015-05-11 | 2015-08-26 | 国家电网公司 | Medium voltage flame-retardant frequency-conversion power cable |
| CN105244093A (en) * | 2015-10-30 | 2016-01-13 | 苏俊兰 | Wear-resistant low-smoke environmental protection device |
| CN105702350A (en) * | 2016-04-27 | 2016-06-22 | 丹阳正联知识产权运营管理有限公司 | Waterproof variable frequency cable with low electromagnetism and resistant to interference |
| CN105938738A (en) * | 2016-05-26 | 2016-09-14 | 合肥中海信息科技有限公司 | Variable frequency cable for silver-copper alloy conductor aerospace |
| CN105938738B (en) * | 2016-05-26 | 2017-12-26 | 安徽省巢湖海兴电缆集团有限公司 | A kind of yellow gold conductor Aero-Space frequency-changing cable |
| CN106531413A (en) * | 2016-12-20 | 2017-03-22 | 北京北广科技股份有限公司 | Winding method of high-frequency and high-power transformer |
| WO2020164085A1 (en) * | 2019-02-15 | 2020-08-20 | 佛山市顺德区伊戈尔电力科技有限公司 | Wire for use in transformer winding and transformer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203966657U (en) | Aluminium alloy core medium voltage frequency converter private cable | |
| CN103000292A (en) | Ultrahigh pressure cross linked polyethylene insulated flexible direct-current optical fiber composite submarine cable | |
| CN102969069A (en) | Waterproof greasy-dirt-resisting 10 kV middle-voltage transducer cable and method | |
| CN203966658U (en) | Aluminium alloy core medium voltage converter fireproof power cable | |
| CN202996412U (en) | Ultrahigh-voltage crosslinking polyethylene insulated flexible direct-current fiber composite submarine cable | |
| CN201489892U (en) | Concentric conductor frequency conversion cable | |
| CN103943199A (en) | High-temperature-resistant compensation flat special cable | |
| CN202887839U (en) | Halogen-free low-smoke flame-retardant medium-voltage frequency changer cable | |
| CN205050626U (en) | Variable frequency cable | |
| CN201174275Y (en) | Environment protection type shielding electric cable for electric power | |
| CN203288333U (en) | Aluminum-alloy-core high shielding cable for frequency converter | |
| CN216528079U (en) | Medium-voltage variable-frequency power cable matched with high-performance large-capacity frequency converter | |
| CN204102624U (en) | For voltage source cable in frequency changing driving system | |
| CN201689734U (en) | Variable frequency power cable | |
| CN204991268U (en) | Middling pressure variable frequency power cable | |
| CN203491006U (en) | Aluminum-alloy cable special for frequency converter | |
| CN204423982U (en) | A kind of three-phase twisted cable | |
| CN204229881U (en) | A kind of Novel variable frequency cable | |
| CN203588747U (en) | Medium-voltage variable frequency cable | |
| CN203491014U (en) | Aluminium-alloy conductor power cable | |
| CN202839115U (en) | Low electromagnetic interference variable frequency cable | |
| CN202102793U (en) | Main circuit power cable for frequency converter | |
| CN2837991Y (en) | Medium and high voltage feeder cable for variable frequency power supply for linear motor in magnetic suspended rail transit system | |
| CN203746482U (en) | Antistatic stretch-proofing cable | |
| CN214336429U (en) | Three-phase symmetrical low-voltage variable frequency cable with shielding |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141126 Termination date: 20200701 |