SE544585C2 - Electrical conductor and cable for use in solar energy applications - Google Patents

Electrical conductor and cable for use in solar energy applications

Info

Publication number
SE544585C2
SE544585C2 SE2050903A SE2050903A SE544585C2 SE 544585 C2 SE544585 C2 SE 544585C2 SE 2050903 A SE2050903 A SE 2050903A SE 2050903 A SE2050903 A SE 2050903A SE 544585 C2 SE544585 C2 SE 544585C2
Authority
SE
Sweden
Prior art keywords
conductor
electrical
cable
cross
solar energy
Prior art date
Application number
SE2050903A
Other languages
Swedish (sv)
Other versions
SE2050903A1 (en
Inventor
Thomas Tullholm
Original Assignee
Mee Invest Scandinavia Ab
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mee Invest Scandinavia Ab filed Critical Mee Invest Scandinavia Ab
Priority to SE2050903A priority Critical patent/SE544585C2/en
Priority to SE2150928A priority patent/SE2150928A1/en
Priority to SE2150930A priority patent/SE2150930A1/en
Priority to PCT/EP2021/067700 priority patent/WO2022012913A2/en
Priority to TW110126241A priority patent/TW202207246A/en
Publication of SE2050903A1 publication Critical patent/SE2050903A1/en
Publication of SE544585C2 publication Critical patent/SE544585C2/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H01B1/023—Alloys based on aluminium
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/14—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable
    • D07B1/147—Ropes or cables with incorporated auxiliary elements, e.g. for marking, extending throughout the length of the rope or cable comprising electric conductors or elements for information transfer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S90/00—Solar heat systems not otherwise provided for
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H01B1/026—Alloys based on copper
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/08—Several wires or the like stranded in the form of a rope
    • H01B5/10—Several wires or the like stranded in the form of a rope stranded around a space, insulating material, or dissimilar conducting material
    • H01B5/102—Several wires or the like stranded in the form of a rope stranded around a space, insulating material, or dissimilar conducting material stranded around a high tensile strength core
    • H01B5/104—Several wires or the like stranded in the form of a rope stranded around a space, insulating material, or dissimilar conducting material stranded around a high tensile strength core composed of metallic wires, e.g. steel wires
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/0009—Details relating to the conductive cores
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
    • H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
    • H01L31/0512—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module made of a particular material or composition of materials
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/30—Electrical components
    • H02S40/36—Electrical components characterised by special electrical interconnection means between two or more PV modules, e.g. electrical module-to-module connection
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B9/00—Power cables
    • H01B9/006—Constructional features relating to the conductors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S323/00—Electricity: power supply or regulation systems
    • Y10S323/906—Solar cell systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Mechanical Engineering (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Energy (AREA)
  • General Engineering & Computer Science (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Thermal Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Conductive Materials (AREA)
  • Insulated Conductors (AREA)
  • Non-Insulated Conductors (AREA)

Abstract

Provided is an electrical conductor for use in solar energy applications comprising a central aluminum wire, and a plurality of copper wires surrounding the central aluminum wire characterized in that a cross-sectional area of the conductor is substantially 4 mm2 and 11.55% - 11.75% of the cross-sectional area is the central aluminum wire and the rest is the plurality of copper wires.

Description

ELECTRICAL CONDUCTOR AND CABLE FOR USE IN SOLAR ENERGYAPPLICATIONS Technical field 1. 1. id="p-1" id="p-1"
[0001] The present invention relates generally to electrical conductors. Theinvention also relates to electrical cables. Specifically, electrical conductors and cables with reduced electromagnetic field.
Background art 2. 2. id="p-2" id="p-2"
[0002] Electrical conductors come in many different forms. Typically, it is theintended use of the conductor that determines the design of an electrical conductor.Some conductors are designed for power distribution, others are designed fortransmission of signals such as telecommunications signals as well as for otherpurposes. Furthermore, electrical conductors can be manufactured from manydifferent materials such as copper, aluminum, steel or nickel. Typically, two or more conductors are joined to form a cable. 3. 3. id="p-3" id="p-3"
[0003] An electrical current running through a conductor causes it to radiate anelectromagnetic field. This electromagnetic field can negatively affect equipment inthe proximity of the cable, which can limit for example how closely togetherconductors or cables can be arranged. Therefore, regardless of the type of conductoror cable, it is typically desired that the radiated electromagnetic field is low. Often,this is achieved by providing shielding components which surround the entire length of the conductor. 4. 4. id="p-4" id="p-4"
[0004] An alternative to providing shielding components is disclosed in US Patent9,953,737. The patent discloses a conductor and a cable having an aluminum coresurrounded by copper wires which has the effect of reducing the electromagneticfield. However, there are still many areas of technology where standardizeddimensions of electrical cables are commonly used, where such a conductor needs to be optimized in order to display a sufficiently reduced electromagnetic field. . . id="p-5" id="p-5"
[0005] Therefore, there is still a need for conductors and cables with a reducedelectromagnetic field, which are optimized for standardized dimensions. 6. 6. id="p-6" id="p-6"
[0006] Solar energy solutions play a central role in the field of clean green energy.Solar energy is harvested using interconnected systems of solar panels. A system ofsolar panels can be small, for private use, or large-scale in solar parks, also knownas solar farms or photovoltaic power stations. No matter the magnitude of theinterconnected solar panel system, high demands are put on the electric conductorsand cables. Too high levels of electromagnetic radiation may interfere with surrounding conductors or electrical equipment. 7. 7. id="p-7" id="p-7"
[0007] Therefore, there is a need for conductors and cables with reducedelectromagnetic field, adapted for use in solar energy applications.
Summary of invention[0008] An object of the present invention is to provide optimized electricalconductors and cables for solar energy applications. 9. 9. id="p-9" id="p-9"
[0009] The invention is based on the insight, that the reduction of theelectromagnetic field can be optimized for certain dimensions of conductors when the ratio between aluminum and copper lies within a certain range. . . id="p-10" id="p-10"
[0010] According to the invention, there is provided an electrical conductor for usein solar energy applications comprising a central aluminum wire, and a plurality ofcopper wires surrounding the central aluminum wire characterized in that a cross-sectional area of the conductor is substantially 4 mm2 and 11.55 °/> - 11.75 °/> of thecross-sectional area is the central aluminum wire and the rest is the plurality of copper wires. 11. 11. id="p-11" id="p-11"
[0011] Having said cross-sectional area of 4 mm2 occupied by this range ofaluminum and copper, reduces the electromagnetic field more than using anotherrange. The technical effect is thus achieved by the combination of said cross- sectional are and said amount of aluminum and copper wire. 12. 12. id="p-12" id="p-12"
[0012] ln an exemplary embodiment, there is provided an electrical cablecomprising one 4 mm2 electrical conductor for use in solar energy applications, ajacket surrounding the electrical conductor and a binder surrounding the conductor. 13. 13. id="p-13" id="p-13"
[0013] According to the invention, there is furthermore provided a system of solarpanels comprising at least one of: a 4 mm2 electrical conductor for use in solarenergy applications, an electrical cable comprising such a conductor.
Brief description of drawinqs 14. 14. id="p-14" id="p-14"
[0014] The invention is now described, by way of example, with reference to the accompanying drawings, in which: Fig. 1 is a cross-sectional view of an electrical conductor, Figs. 2 is a cross-sectional view of an electrical cable comprising two conductors,Figs. 3 is a cross-sectional view of an electrical cable comprising one conductor,Fig. 4 is a schematic view of a solar energy system.
Description of embodiments . . id="p-15" id="p-15"
[0015] ln the following, a description of a plurality of electrical conductors andelectrical cables according to the invention will be given with reference to the drawings. 16. 16. id="p-16" id="p-16"
[0016] The invention disclosed herein relates to electrical conductors for use inapplications where it is important that the electromagnetic field radiated from theconductor is low. The intended application of the conductor will affect what design ofthe conductor is suitable. Design parameters can be for example dimension,components or an arrangement of the components. Therefore, the electricalconductors disclosed herein are a combination of a conductor design and a preferred area of application. 17. 17. id="p-17" id="p-17"
[0017] Fig. 1 shows a cross-sectional view of an electrical conductor 1corresponding to a general design of the conductor 1. A conductor is defined as anassembly of a plurality of conducting wires, and a wire is defined as a singleconducting metal thread. The electrical conductor 1 has a central core comprising analuminum wire 11. Surrounding the central core comprising the aluminum wire 11,one or more copper wires 12 are provided. The conductor 1 has a dimension whichcorresponds to the cross-sectional area of the conductor 1. The dimension of theconductor 1 comprises a first and a second cross-sectional area, which each take up a first and second cross-sectional area percentage. The first percentage correspondsto the cross-sectional area of the aluminum wire 11 and the second percentagecorresponds to the sum of the cross-sectional areas of the copper wires 12. Becausethe conductor1 only comprises the aluminum wire 11 and the copper wires 12, thefirst and second area percentage have a sum equal to 100%. 18. 18. id="p-18" id="p-18"
[0018] The aluminum wire 11 and the copper wires 12 are in direct contact witheach other and are hence uncoated, naked wires without any insulation. To furtherimprove the contact between the wires, the aluminum wire 11 is made of high purityaluminum and the copper wires 12 are made of high purity copper. The high purityincreases the good contact between the wires. For example, copper according toUNS C 10100 or C11 000 can be used. Furthermore, aluminum according to EN573-3 can be used. ln a preferred embodiment the copper wires 12 have a purity of atleast 95%, in an even more preferred embodiment the copper wires 12 have a purityof at least 99%. Similarly, in a preferred embodiment the aluminum wire 11 has apurity of at least 95%, in an even more preferred embodiment the aluminum wirehas a purity of at least 99%. 19. 19. id="p-19" id="p-19"
[0019] As stated above, the conductor 1 in Fig. 1 shows a general design of theconductor 1. However, the intended application of the conductor will affect whatdesign of the conductor 1 is suitable. Some examples of design parameters are: thedimension of the conductor 1, the cross-sectional area of the aluminum wire 11 andthe individual copper wires 12, wherein the cross-sectional area of the aluminum wirecan be larger or smaller or the same as that of the individual copper wires 12, thecross-sectional areas of the individual copper wires being the same or different, thenumber of copper wires 12, the arrangement of the copper wires 12 around thealuminum wire 11 being in one or a plurality of layers, the copper wires 12 being ornot being twinned around the aluminum wire 11, the copper wires 12 being twinned clock wise or anticlockwise. . . id="p-20" id="p-20"
[0020] ln Fig. 2, a cross-sectional view of an embodiment of an electrical cable 6comprising two of the electrical conductor 1 is shown. The cable 6 may comprisefewer or more of the conductor 1. Each of the conductor 1 is provided with at leastone jacket 2 of insulation. The jacket 2 can be of any type used in existing cables andof any suitable material such as a polymer-based material, for example TPSFurthermore, the cable 6 comprises a filling material 3. The filling material 3 can be ofany type used in existing cables and of any suitable material such as a polymer-based material. Surrounding the at least one insulated electrical conductor 1 and thefilling material 3, a binder 4 is provided. Surrounding the binder 4, an outer coating 5is provided. 21. 21. id="p-21" id="p-21"
[0021] ln Fig. 3, a cross-sectional view of an embodiment of the electrical cable 6comprising one electrical conductor 1 is shown. The cable 6 shown in Fig.comprises two jackets 2 of insulation. 22. 22. id="p-22" id="p-22"
[0022] Following is an example disclosing an embodiment of the conductor 1where the design of the conductor 1 is adapted to solar energy applications. Theexample also discloses specific embodiments of the cable[0023] ln a preferred embodiment, a conductor 1 is provided having a dimension of4 mm2. Surprisingly, it has been found that for the 4 mm2 conductor, a lowerelectromagnetic field is emitted when the cross-sectional area of the conductor iscomprised by 11.65% +/- 1 °/>, more preferably +/- 0.5 °/-.~, even more preferably 0.1 °/-.~,of the aluminum wire 11 and 88.35 % +/- 1°/>, more preferably +/- 05%, even morepreferably 0.1% of the copper wires 12, as compared to using other percentages ofthe components. 24. 24. id="p-24" id="p-24"
[0024] A cable 6,7 for use in solar energy applications is also provided. The cable7 comprises one 4 mm2 conductor having a cross-sectional area where 11.65% +/-1°/>, more preferably +/- 05%, even more preferably 0.1% is the aluminum wire 11and 88.35 % +/- 1%, more preferably +/- 0.5°/>, even more preferably 0.1% is thecopper wires[0025] Fig. 4 displays a system of solar panels interconnected by the cable 6,7comprising the 4 mm2 conductor for use in solar energy applications. 26. 26. id="p-26" id="p-26"
[0026] Preferred embodiments of a conductor and a cable have now beendisclosed. However, a person skilled in the art realizes that these can be varied within the scope of the appended claims without departing from the inventive idea. 27. 27. id="p-27" id="p-27"
[0027] A|| the described alternative embodiments above or parts of anembodiment can be freely combined or employed separately from each other withoutdeparting from the inventive idea as long as the combination is not contradictory.

Claims (3)

1. An electrical conductor for use in solar energy applications comprising:- a central aluminum wire (11), and- a plurality of copper wires (12) surrounding the central aluminum wire (11), c h a ra cte r i z e d in th at a cross-sectional area of the conductor is substantially4 mm2 and 11.55 % - 11.75 % of the cross-sectional area is the central aluminum(11)wire and the rest is the plurality of copper wires (12).
2. An electrical cable comprising- at least one electrical conductor according to claim 1,- a jacket (2) surrounding the electrical conductor.
3. A system of solar panels comprising at least one of: the electrical conductoraccording to claim 1, the electrical cable according to claim 2.
SE2050903A 2020-07-17 2020-07-17 Electrical conductor and cable for use in solar energy applications SE544585C2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE2050903A SE544585C2 (en) 2020-07-17 2020-07-17 Electrical conductor and cable for use in solar energy applications
SE2150928A SE2150928A1 (en) 2020-07-17 2020-07-17 Electrical conductors and cables for solar energy applications
SE2150930A SE2150930A1 (en) 2020-07-17 2020-07-17 Electrical conductors and cables for military energy applications
PCT/EP2021/067700 WO2022012913A2 (en) 2020-07-17 2021-06-28 Electrical conductors and cables
TW110126241A TW202207246A (en) 2020-07-17 2021-07-16 Electrical conductors and cables

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2050903A SE544585C2 (en) 2020-07-17 2020-07-17 Electrical conductor and cable for use in solar energy applications

Publications (2)

Publication Number Publication Date
SE2050903A1 SE2050903A1 (en) 2022-01-18
SE544585C2 true SE544585C2 (en) 2022-07-26

Family

ID=76662500

Family Applications (3)

Application Number Title Priority Date Filing Date
SE2050903A SE544585C2 (en) 2020-07-17 2020-07-17 Electrical conductor and cable for use in solar energy applications
SE2150930A SE2150930A1 (en) 2020-07-17 2020-07-17 Electrical conductors and cables for military energy applications
SE2150928A SE2150928A1 (en) 2020-07-17 2020-07-17 Electrical conductors and cables for solar energy applications

Family Applications After (2)

Application Number Title Priority Date Filing Date
SE2150930A SE2150930A1 (en) 2020-07-17 2020-07-17 Electrical conductors and cables for military energy applications
SE2150928A SE2150928A1 (en) 2020-07-17 2020-07-17 Electrical conductors and cables for solar energy applications

Country Status (3)

Country Link
SE (3) SE544585C2 (en)
TW (1) TW202207246A (en)
WO (1) WO2022012913A2 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100038112A1 (en) * 2008-08-15 2010-02-18 3M Innovative Properties Company Stranded composite cable and method of making and using
CN103646719A (en) * 2013-12-17 2014-03-19 河南省亿通电线电缆有限公司 Aluminum alloy core copper stranded crosslinked overhead cable
US20150200032A1 (en) * 2014-01-15 2015-07-16 Fisk Alloy Inc. Light weight, high strength, high conductivity hybrid electrical conductors
US9953737B2 (en) * 2014-08-05 2018-04-24 Mee Investment Scandinavia Ab Electrical wire with a central aluminum wire surrounded by at least one copper wire
EP3576104A1 (en) * 2018-05-30 2019-12-04 Yazaki Corporation Insulation cable

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010044995A (en) * 2008-08-18 2010-02-25 Sumitomo Wiring Syst Ltd Electric wire, and connection structure of electric wire with terminal metal fitting
US20100096162A1 (en) * 2008-10-22 2010-04-22 Emilio Cerra Lightweight copper/aluminum composite conductors
US9530532B2 (en) * 2014-08-22 2016-12-27 Abb Schweiz Ag Hybrid conductor with circumferential conducting layers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100038112A1 (en) * 2008-08-15 2010-02-18 3M Innovative Properties Company Stranded composite cable and method of making and using
CN103646719A (en) * 2013-12-17 2014-03-19 河南省亿通电线电缆有限公司 Aluminum alloy core copper stranded crosslinked overhead cable
US20150200032A1 (en) * 2014-01-15 2015-07-16 Fisk Alloy Inc. Light weight, high strength, high conductivity hybrid electrical conductors
US9953737B2 (en) * 2014-08-05 2018-04-24 Mee Investment Scandinavia Ab Electrical wire with a central aluminum wire surrounded by at least one copper wire
EP3576104A1 (en) * 2018-05-30 2019-12-04 Yazaki Corporation Insulation cable

Also Published As

Publication number Publication date
WO2022012913A3 (en) 2022-02-24
SE2150930A1 (en) 2022-01-18
WO2022012913A2 (en) 2022-01-20
SE2150928A1 (en) 2022-01-18
SE2050903A1 (en) 2022-01-18
TW202207246A (en) 2022-02-16

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