WO2019229656A1 - Structure de connexion de câbles d'alimentation et son système de détection de température - Google Patents

Structure de connexion de câbles d'alimentation et son système de détection de température Download PDF

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Publication number
WO2019229656A1
WO2019229656A1 PCT/IB2019/054416 IB2019054416W WO2019229656A1 WO 2019229656 A1 WO2019229656 A1 WO 2019229656A1 IB 2019054416 W IB2019054416 W IB 2019054416W WO 2019229656 A1 WO2019229656 A1 WO 2019229656A1
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WO
WIPO (PCT)
Prior art keywords
cable
temperature sensor
power
connection structure
power cable
Prior art date
Application number
PCT/IB2019/054416
Other languages
English (en)
Inventor
Kengo TAKASU
Tasuku Nakayama
Tsunehisa Nakamura
Original Assignee
3M Innovative Properties Company
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 3M Innovative Properties Company filed Critical 3M Innovative Properties Company
Publication of WO2019229656A1 publication Critical patent/WO2019229656A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/02—Means for indicating or recording specially adapted for thermometers
    • G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08—Locating faults in cables, transmission lines, or networks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/58—Testing of lines, cables or conductors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/08—Cable junctions
    • H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable
    • H02G15/1806—Heat shrinkable sleeves

Definitions

  • the present invention relates to a power cable connection structure and a temperature sensing system therefor.
  • connection structure for connecting power cables to each other has been known.
  • the power cable connection structure is subjected to a coating process for insulation and waterproof protection. Further, an internal state of the cable connection structure subjected to the coating process cannot be checked without damaging the cable connection structure. Therefore, in a general usage state, abnormality of the connection structure is not noticed until the power cable connection structure is damaged, the supply of power is stopped to cause a power failure.
  • Patent Document 1 describes that a temperature sensor is installed in a region near a connection portion between the power cables, which is the only place where a conductor of the power cable is exposed, before performing an insulation process, a waterproofing process, and the like on the connection portion between the power cables, and the temperature sensor is sealed in the coated structure.
  • the temperature sensor can perform wireless communication with an external receiving device, and a sensing result of the temperature sensor is transmitted to the external receiving device through the wireless communication.
  • the temperature sensor is directly installed in the place where the conductor is exposed. Therefore, in the technology described in Patent Document 1, there is a need to install the temperature sensor before performing the insulation process on the connection portion and the temperature sensor cannot be installed on an existing connection portion ex post facto, which results in poor workability.
  • the temperature sensor in a case where the temperature sensor is installed on the connection portion already subjected to the insulation process, there is a need to remove an insulation coating of the connection portion once and then install the temperature sensor.
  • the power cable needs to be cut first and then be connected again. In general, the power cable does not have an extra length and thus it is practically impossible to cut and reconnect the power cable.
  • An object of the present invention is to provide a power cable connection structure and a temperature sensing system therefor, in which temperature sensing means can be easily applied even to an existing power cable connection structure.
  • a power cable connection structure for connecting end portions of power cables, each of which includes a cable conductor, a cable insulator disposed around the cable conductor, and a cable protecting sheath disposed around the cable insulator, to each other, the power cable connection structure including: a connection portion insulator layer which covers an exposed portion of the cable conductor; a waterproof layer which is disposed around the connection portion insulator layer; and a temperature sensor which senses a change in temperature of the cable conductor, wherein the temperature sensor is installed in a region other than a space surrounded by the connection portion insulator layer.
  • the present invention configured as described above, it is possible to sense heat generation of the cable conductor by indirectly monitoring the temperature of the cable conductor in the region other than the space surrounded by the connection portion insulator layer. Further, in the connection structure described above, to the existing power cable, the temperature sensor is installed outside the connection portion insulator layer without removing the connection portion insulator layer which is hard to re-construct, such that the heat generation of the cable conductor can be accurately sensed.
  • the temperature sensor may be disposed outside the connection portion insulator layer at a position near a position at which the cable conductor is exposed.
  • the power cable may be a power cable including an insulator, a cable semiconductor layer disposed around the insulator, and a cable shielding layer disposed around the cable semiconductor layer, and the temperature sensor may be disposed outside the connection portion insulator layer at a position near an end portion of the cable semiconductor layer in an axial direction of the power cable.
  • the temperature sensor can be installed at a position at which a temperature is most easily increased at the time of occurrence of abnormality and which is near the exposed portion of the cable conductor or the end portion of the cable semiconductor layer, in the region other than the space surrounded by the connection portion insulator layer. By doing so, it is possible to more accurately sense abnormal heat generation of the cable conductor.
  • the power cable connection structure may further include a power supply unit for supplying driving power to the temperature sensor, wherein the power supply unit includes an electromagnetic induction harvester including a coil disposed to surround the power cable.
  • the present invention configured as described above, it is possible to generate the driving power of the temperature sensor through electromagnetic induction using the coil by using power stably flowing in the power cable. Therefore, there is no need to secure the driving power of the temperature sensor from the outside and thus it is possible to simplify a power system of the temperature sensor.
  • the power cable connection structure may further include a transmitting unit which is electrically connected to the temperature sensor and transmits a sensing result obtained by the temperature sensor to the outside through wireless communication; and a receiving unit which receives the sensing result transmitted from the transmitting unit.
  • a transmitting unit which is electrically connected to the temperature sensor and transmits a sensing result obtained by the temperature sensor to the outside through wireless communication
  • a receiving unit which receives the sensing result transmitted from the transmitting unit.
  • the transmitting unit may be electrically connected to the electromagnetic induction harvester.
  • driving power of the transmitting unit can also be secured by the electromagnetic induction harvester, such that there is no need to separately provide an electrical system to transmit the sensing result of the temperature sensor to the outside.
  • a temperature sensing system for a power cable connection structure for connecting end portions of power cables, each of which includes a cable conductor, a cable insulator disposed around the cable conductor, and a cable protecting sheath disposed around the cable insulator, to each other, the temperature sensing system including: a temperature sensor which is installed in a region other than a space surrounded by a connection portion insulator layer; a power supply unit for supplying driving power to the temperature sensor; and a transmitting unit which is electrically connected to the temperature sensor and transmits a sensing result obtained by the temperature sensor to the outside through wireless communication.
  • the present invention it is possible to sense heat generation of the cable conductor by monitoring a temperature of a surface of the cable protecting sheath in a portion other than a coated portion to which waterproof coating is applied.
  • FIG. l is a side cross-sectional view of a power cable connection structure according to an embodiment of the present invention.
  • FIG. 2 is a block diagram illustrating a configuration of a temperature sensing system applied to the power cable connection structure
  • FIG. 3 is a perspective view of the temperature sensing system. Description of Embodiments
  • FIG. l is a side cross-sectional view of a power cable connection structure according to an embodiment of the present invention.
  • the power cable connection structure is a branch connection structure in which two power cables 2A and one power cable 2B are connected to each other, and cable conductors 2a exposed from distal ends of the two power cables 2A and a cable conductor 2a exposed from a distal end of the cable 2B are connected to one another through a connection portion 3.
  • a structure in which two power cables and one power cable are connected to one another in a branch connection portion will be described by way of example.
  • the present invention can also be applied to a direct connection structure in which end portions of two power cables are connected to each other.
  • the connection portion 3 includes an adapter 3 A for inserting one cable, and an adapter 3B for inserting two cables, the adapter 3 A being provided at a side where the power cable 2B is inserted and the adapter 3B being provided at a side where the two power cables 2A are inserted. Further, the power cables 2A and 2B extend up to an inner portion of the connection portion 3 through the adapters 3 A and 3B, respectively, and are connected to one another in an insulated space in the connection portion 3.
  • the cable 2A includes a cable conductor 2a, a cable insulator 2b, a cable semiconductor layer 2c, a cable shielding layer 2d, and a cable protecting sheath 2e.
  • the cable conductor 2a, the cable insulator 2b, the cable semiconductor layer 2c, the cable shielding layer 2d, and the cable protecting sheath 2e are sequentially arranged from an inner circumference toward an outer circumference. Further, the cable conductor 2a, the cable insulator 2b, the cable semiconductor layer 2c, the cable shielding layer 2d, and the cable protecting sheath 2e are sequentially exposed from a distal end side.
  • the power cable 2B has the same configuration as that of the power cable 2A and thus a description thereof will be omitted.
  • the cable insulator 2b is formed of an insulating resin or the like and covers an outer circumferential surface of the cable conductor 2a.
  • the cable shielding layers 2d and the cable protecting sheaths 2e of the end portions of the power cables 2A and 2B having such a structure are removed outside the adapters 3 A and 3B, and the remaining cable conductors 2a, the cable insulators 2b, and the cable semiconductor layers 2c are inserted into the connection portion 3 through the adapters 3 A and 3B.
  • the cable semiconductor layer 2c is a layer having semiconductivity, and is made of, for example, a cloth or a paper into which a conductive material such as carbon is impregnated.
  • the cable semiconductor layers 2c are disposed on inner circumferential sides of the cable shielding layers 2d, and have an effect of enhancing an insulation of the power cable 2A by making a local high electric field portion, which is generated due to the overlapping between the cable shielding layers 2d, uniform.
  • the cable shielding layer 2d is a conductive layer which is provided to prevent an electric shock and make a leakage current of the power cable 2A flow.
  • Examples of the material of the cable shielding layer 2d include a copper tape, and in this case, the cable shielding layer 2d is also referred to as a shielding copper tape.
  • the cable shielding layer 2d covers an outer circumference of the cable semiconductor layer 2c.
  • the cable protecting sheath 2e is made of, for example, vinyl chloride or polyethylene. The cable protecting sheath 2e covers the outer circumference of the cable shielding layer 2d.
  • a coating tool 1 includes a tubular unit 10 extending in an axial direction, a first waterproof unit 20 disposed to surround an outer circumferential side of the tubular unit 10, and a second waterproof unit 30 disposed to surround an outer circumferential side of the tubular unit 10.
  • the first waterproof unit 20 is disposed on one end side of the tubular unit 10 in the axial direction to surround the outer circumferential side of the tubular unit 10.
  • the second waterproof unit 30 is disposed on the other end side of the tubular unit 10 in the axial direction to surround the outer circumferential side the tubular unit 10.
  • the tubular unit 10 includes a tube member 12, an insulating cylinder 13 disposed inside the tube member 12, a waterproof protecting layer 14 disposed between the insulating cylinder 13 and the tube member 12, and a ground wire 16 extending in an axial direction.
  • the tube member 12 is a member serving as a sheath which covers a cable connection portion 3.
  • the tube member 12 is, for example, a normal temperature shrinkable tube which is made of rubber which is shrunk at normal temperature and has excellent elasticity. Examples of the material of the tube member 12 include ethylene propylene rubber, silicone rubber, or the like.
  • a length of the tube member 12 in the axial direction is set to be a length capable of exposing the cable shielding layers 2d of the power cable 2A and the power cable 2B in the coated state. By doing so, an operation of connecting between the ground wire 16 and the cable shielding layer 2d can be performed after coating the cable connection portion 3 with the tube member 12.
  • both end portions of the tube member 12 are disposed at positions corresponding to the cable semiconductor layer 2c of the power cable 2A and the power cable 2B, but the length of the tube member 12 is not particularly limited.
  • the insulating cylinder 13 corresponds to an“connection portion insulator layer” of the present invention, and is made of ethylene propylene rubber, silicone rubber or the like, which has high insulation and excellent molding processability, as a base rubber, and includes an internal conductive layer 13 A, a reinforcing insulator 13B, and an outer conductive reinforcing layer 13C.
  • the internal conductive layer 13A and the reinforcing insulator 13B are configured as, for example, a component integrally molded so as to have a spindle shape.
  • the insulating cylinder 13 may not have the spindle shape, but may have a simple cylindrical shape.
  • the internal conductive layer 13 A is provided so as to cover the connection portion 3 and the vicinity of end portions of the adapters 3 A and 3B in the coated state.
  • the reinforcing insulator 13B is disposed on an outer circumferential side of the internal conductive layer 13 A, and axially provided in a wider range than the internal conductive layer 13A.
  • the outer conductive reinforcing layer 13C is disposed between the ground wire 16 and the waterproof protecting layer 14.
  • the waterproof protecting layer 14 is disposed on an outer circumferential surface of the outer conductive reinforcing layer 13C of the insulating cylinder 13.
  • the tube member 12 is disposed on the outer circumferential surface of the waterproof protecting layer 14.
  • the waterproof protecting layer 14 is a member for ensuring waterproof property even when the tube member 12 is damaged or the like.
  • a sheet having a butyl rubber layer on polyethylene for example, a waterproof material (putty-like waterproof material) having fluidity such as a silicone rubber compound or a butyl rubber compound is adopted.
  • the ground wire 16 is a string-like member which is disposed between the insulating cylinder 13 and the outer conductive reinforcing layer 13C and extends in an axial direction.
  • the ground wire 16 is formed of, for example, a flat tint copper wire, a copper stranded wire, and the like, and is set to be a length capable of connecting between the cable shielding layer 2d of the cable 2 A and the cable shielding layer 2d of the cable 2B.
  • the first waterproof unit 20 includes a tube member 22, a waterproof mastic 25 disposed inside the tube member 22, and a waterproof cover 26.
  • the waterproof cover 26 is configured to be in close contact with the cable protecting sheath 2e of the power cable 2A.
  • An end portion of the waterproof cover 26 is provided with the waterproof mastic 25 which is provided between the waterproof cover 26 and the cable protecting sheath 2e, so a space between the waterproof cover 26 and the cable protecting sheath 2e is completely sealed.
  • the waterproof mastic 25 is made of a waterproof material (putty-like waterproof material) having fluidity.
  • a silicone rubber compound or a butyl rubber compound can be used.
  • the waterproof cover 26 is configured, for example, by attaching a rubber molded product made of, for example, EPDM rubber or silicone rubber to an outer surface of a cylindrical transparent polycarbonate.
  • the waterproof cover 26 is covered with a separate tube member 22.
  • the second waterproof unit 30 includes a tube member 32, a waterproof mastic 35 disposed inside the tube member 32, and a waterproof cover 36.
  • the tube member 32 and the waterproof mastic 35 of the second waterproof unit 30 have the same structure as the tube member 22 and the waterproof mastic 25 of the first waterproof unit 20.
  • the waterproof cover 36 of the second waterproof unit 30 has a space whose diameter is enlarged with respect to an outer diameter of the cable protecting sheath 2e of the power cable 2B, in which a temperature sensing system 40 described later is disposed in the space.
  • the temperature sensing system can be exposed by removing the tube member 32 and further sliding the waterproof cover 36 in the axial direction of the power cable 2B.
  • first waterproof unit 20 is a member which can be separated independent of the tubular unit 10 and the second waterproof unit 30.
  • the tube member 22 of the first waterproof unit 20 is separated from the tube member 12 of the tubular unit 10 and is separated from the tube member 32 of the second waterproof unit 30.
  • the connection structure according to the present embodiment includes the temperature sensing system 40 (see FIG. 2) in a region S3 on the cable protecting sheath 2e of the power cable 2B.
  • the temperature sensing system may be provided on the side of the power cable 2A or may be provided on both sides of the power cables 2A and 2B.
  • FIG. 2 is a block diagram illustrating a configuration of the temperature sensing system applied to the power cable.
  • the temperature sensing system 40 includes a temperature sensor 41 which is disposed on an outer surface of the cable protecting sheath 2e, an ambient temperature sensor 42 which senses an ambient temperature of the environment in which the temperature sensing system 40 is disposed, a wireless transmitter 43, and an electromagnetic induction harvester 44 which generates electric power for driving.
  • the temperature sensor 41 is fixed to the surface of the cable protecting sheath 2e on an outermost surface of the power cable 2B in the region S3 outside an adapter 3 A with respect to the space formed by the connection portion 3, and continuously senses a surface temperature of the cable protecting sheath 2e while power is flowing in the power cable 2B.
  • the temperature sensor 41 is disposed at such a position that the temperature of the cable conductor 2a can be indirectly sensed via another structure of the power cable such as the cable protecting sheath 2e without being in direct contact with the cable conductor 2a.
  • the ambient temperature sensor 42 continuously senses the ambient temperature of the environment in which the temperature sensing system 40 is disposed while power is flowing through the power cable 2B.
  • the wireless transmitter 43 transmits the sensed result of the temperature by the temperature sensor 41 and the ambient temperature sensor 42 to an external receiving device using wireless communication means such as Bluetooth (registered trademark).
  • the electromagnetic induction harvester 44 generates electric power for driving the temperature sensor 41, the ambient temperature sensor 42, and the wireless transmitter 43 using a fluctuation in a magnetic flux due to a current flowing through the power cable 2B. More specifically, the electromagnetic induction harvester 44 includes a current conversion unit 45 formed of an electromagnetic induction coil or the like, a voltage clamper 46, a rectifier 47, and a voltage regul ator 48.
  • the current conversion unit 45 includes a coil which turns around the power cable 2B in the circumferential direction of the power cable 2B when applied around the power cable 2B.
  • the current conversion unit 45 generates an induced current while a current is flowing through the power cable 2B.
  • the generated induced current is rectified and voltage-regulated via the voltage clamper 46, the rectifier 47, and the voltage regulator 48, and is supplied to the temperature sensor 41, the ambient temperature sensor 42, and the wireless transmitter 43.
  • FIG. 3 is a perspective view showing the electromagnetic induction harvester.
  • the current conversion unit 45 of the electromagnetic induction harvester 44 includes a main body 45a which is electrically connected to the voltage clamper 46 and the like, and an arm 45b which is pivotally fixed to the main body 45a.
  • an insertion hole 45c of the power cable 2A is formed between the main body 45a and the arm 45b so as to surround the power cable 2A.
  • a tip of the arm 45b is provided with a locking portion 45d which can be locked to the main body 45a.
  • electromagnetic induction coil is built in the main body 45a and the arm 45b, and the coil is wound around the insertion hole of the power cable 2A several times in a circumferential direction in a state where the arm 45b is closed to be locked to the main body 45a.
  • Such a structure of the current conversion unit 45 allows the temperature sensing system 40 to be easily attached around the power cable 2A.
  • the temperature sensing system 40 configured in this way can continuously sense the surface temperature of the cable protecting sheath 2 e and output the sensed surface temperature to the outside.
  • the waterproof cover 36 When a temperature sensing waterproof structure is installed, the waterproof cover 36 is disposed around the temperature sensing system, and the waterproof mastic 35 is applied to the cable protecting sheath 2e and further covers the tube member 32 from the circumference thereof. Thereby, even when the temperature sensing system is disposed in an environment exposed to rain water, ground water or the like, the temperature sensing system can be protected appropriately.
  • the temperature sensing system is provided at the position in the region S3, but the temperature sensor 41 can be installed at any position as long as it can be re-constructed at an installation site of the connection structure.
  • the "the temperature sensor 41 can be re-constructed at the installation site” means that the insulating structure and the waterproof structure can be restored in situ after the temperature sensor is attached and detached at the installation site after the connection structure is once installed. Then, in the example illustrated in FIG.
  • the“re-constructible position at the installation site” means a position where the insulating cylinder 13 can be accessed without being destroyed, that is, a position other than the space surrounded by the insulating cylinder 13.
  • the temperature sensor 41 can be installed at the position away from the electromagnetic induction harvester 44, at least only the temperature sensor 41 of the
  • temperature sensing system 40 may be disposed in the region Sl or the region S2.
  • the temperature sensor 41 and the ambient temperature sensor 42 may be disposed.
  • the temperature sensor 41 may be provided in the plurality of regions Sl, S2, and S3.
  • the temperature sensor 41 may be disposed at any position as long as it is outside the outer conductive reinforcing layer 13C at the outermost layer of the insulating cylinder 13 in a radial direction of the power cable 2A.
  • the temperature sensor 41 is preferably disposed on the outer surface of the outer conductive reinforcing layer 13C.
  • the temperature sensor 41 is more preferably disposed inside the waterproof protecting layer 14 in order to waterproof the temperature sensor 41 itself.
  • the present embodiment configured as described above, it is possible to detect the heat generation of the cable conductor 2a by indirectly monitoring the temperature of the cable conductor 2a in the regions (Sl, S2, and S3) other than the space surrounded by the insulating cylinder 13.
  • the temperature sensor 41 is installed outside the insulating cylinder 13 without removing the insulating cylinder 13 which is difficult to re-construct, so the heat generation of the cable conductor 2a can be detected accurately.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Cable Accessories (AREA)
  • Electric Cable Installation (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

Cette invention concerne une structure de connexion de câbles d'alimentation pour connecter des parties d'extrémité de câbles d'alimentation (2A et 2B), dont chacune comprend un conducteur de câble (2a), un isolant de câble (2b) disposé autour du conducteur de câble (2a), et une gaine de protection de câble (2e) disposée autour de l'isolant de câble (2b), l'une à l'autre, la structure de connexion de câbles d'alimentation comprenant : un cylindre isolant (13) qui recouvre une partie exposée du conducteur de câble (2a) ; une couche de protection étanche à l'eau (14) qui est disposée autour du cylindre isolant (13) ; et un capteur de température (41) qui détecte un changement de température du conducteur de câble (2a), le capteur de température (41) étant installé dans une région (S1, S2, S3) autre qu'un espace entouré par le cylindre isolant (13).
PCT/IB2019/054416 2018-05-28 2019-05-28 Structure de connexion de câbles d'alimentation et son système de détection de température WO2019229656A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2018-101489 2018-05-28
JP2018101489A JP2019208298A (ja) 2018-05-28 2018-05-28 電力ケーブルの接続構造及びその温度検出システム

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WO2019229656A1 true WO2019229656A1 (fr) 2019-12-05

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