EP4004568A1 - Dispositif de test pour lignes électriques - Google Patents

Dispositif de test pour lignes électriques

Info

Publication number
EP4004568A1
EP4004568A1 EP20747143.4A EP20747143A EP4004568A1 EP 4004568 A1 EP4004568 A1 EP 4004568A1 EP 20747143 A EP20747143 A EP 20747143A EP 4004568 A1 EP4004568 A1 EP 4004568A1
Authority
EP
European Patent Office
Prior art keywords
chamber
test device
electrical
connection point
tested
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.)
Pending
Application number
EP20747143.4A
Other languages
German (de)
English (en)
Inventor
Hans-Peter HIESER
Michael Haberkorn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ADAPTRONIC PRUEFTECHNIK GmbH
Original Assignee
ADAPTRONIC PRUEFTECHNIK GmbH
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 ADAPTRONIC PRUEFTECHNIK GmbH filed Critical ADAPTRONIC PRUEFTECHNIK GmbH
Publication of EP4004568A1 publication Critical patent/EP4004568A1/fr
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/92—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating breakdown voltage
    • 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
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
    • G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
    • G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
    • 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
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • 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
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/16—Construction of testing vessels; Electrodes therefor
    • 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
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/2851—Testing of integrated circuits [IC]
    • G01R31/2855—Environmental, reliability or burn-in testing
    • G01R31/286—External aspects, e.g. related to chambers, contacting devices or handlers
    • G01R31/2863—Contacting devices, e.g. sockets, burn-in boards or mounting fixtures
    • 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
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/2851—Testing of integrated circuits [IC]
    • G01R31/2855—Environmental, reliability or burn-in testing
    • G01R31/286—External aspects, e.g. related to chambers, contacting devices or handlers
    • G01R31/2868—Complete testing stations; systems; procedures; software aspects
    • 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
    • G01R31/67—Testing the correctness of wire connections in electric apparatus or circuits

Definitions

  • the invention relates to a test device for testing the insulation of an electrical line, in particular a cable or a cable harness, preferably for the detection of defects in the insulation of the electrical line, according to the preamble of claim 1.
  • cables must be tested before they are used.
  • the dielectric strength of the cable insulation is an important criterion.
  • Such test procedures are intended to rule out the possibility of defects in the insulation, which represent a potential hazard during the operation of electrical circuits in machines, vehicles, aircraft, etc.
  • US 4,859,953 discloses a test arrangement for testing a prefabricated cable harness.
  • the test stand comprises a plurality of modular frame units with open ends to be interconnected. This allows the length of the test stand to be changed, so that different types of cable harnesses can be tested.
  • this test arrangement is not suitable for testing the insulation of the cable harnesses or the dielectric strength of the cable insulation.
  • the test is also not carried out under vacuum conditions; it is not possible at all to produce a vacuum with the test arrangement disclosed in US Pat. No. 4,859,953.
  • DE10024809B4 discloses, for example, a device for detecting damage in the insulation of electrical lines and cable harnesses by means of a test room.
  • the area of the line or cable harness to be detected is encompassed in a tong-like manner by a test vessel that forms the test space.
  • the test room is closed before the detection and its atmosphere is replaced by gas exchange with a test gas or test gas mixture with a lower breakdown voltage than that of air.
  • FR2716721 discloses an apparatus for testing electrical cables.
  • the device comprises a housing for receiving an ionizing gas.
  • the cable to be tested is guided through holes in the housing - provided with sealing rings - so that only a section of the cable is surrounded by the housing.
  • the object of the present invention is therefore to create a device which does not have the aforementioned disadvantages and in particular enables a faster and more reliable procedure for testing electrical lines.
  • the effort should be as low as possible and the user-friendliness high.
  • the optional possibility should be created to be able to carry out reliable tests without the use of test gas.
  • the test device has a tightly closable, evacuable chamber for fully accommodating the electrical line to be tested, with at least one electrical connection point, preferably in the form of a plug-in device part, for connecting the electrical line to be tested being arranged inside the chamber and from the Connection point leads out an electrical bushing from the chamber.
  • the chamber can be tightly closed and evacuated, so that a vacuum, but at least a negative pressure, is generated inside the chamber can.
  • a vacuum but at least a negative pressure
  • the electrical feedthroughs from the connection point (s) to the outside are designed in such a way that they ensure the tightness of the chamber.
  • the connection points which are preferably designed as plug-in device parts, can form a flange in the wall duct from the outside to the inside.
  • the dielectric strength of the cable insulation is tested by applying a test voltage (or a test voltage curve that varies over time) between the electrical line and an electrode, which can be formed, for example, by the housing of the chamber or part of the housing of the chamber.
  • the advantage of the invention is to be seen in particular in the fact that the electrical line to be tested is completely, i. H. including their ends, which can be equipped with plugs, located inside the chamber.
  • the test procedure can therefore always be carried out under the same conditions and regardless of the shape and size of the lines to be tested.
  • the test can be carried out under vacuum, i. H. a test gas is not absolutely necessary. All of this makes the process simple, reproducible and reliable.
  • the cable completely accommodated in the test chamber can be connected to plugs provided in a wall of the housing of the chamber.
  • test is entirely non-destructive. It is preferred if the electrical line test is carried out under vacuum (ie with the chamber evacuated). The breakdown voltage is reduced by testing under vacuum just like in protective gas. This means that breakdowns occur at a significantly lower voltage than at normal pressure.
  • the (high) voltage source required for the test can be arranged outside the chamber. The electrical bushings ensure the electrical connection from the outside to the inside of the chamber.
  • the invention is particularly a cable testing device for testing and / or determining the dielectric strength of the cable insulation.
  • the term cable is understood to mean both simple cables (i.e. without branches), possibly with several parallel lines, and more or less complex cable structures or cable harnesses.
  • the present test device is suitable for all of these.
  • a preferred embodiment is characterized in that at least part, preferably at least half or at least the bottom, of the housing of the chamber is made of conductive material, in particular metal, which is connected to a voltage source and / or a potential, preferably earth is.
  • the housing of the chamber is used here at the same time as an electrode to build up a voltage and, in the event of a defect in the insulation, to make the breakdown measurable. This is preferably done by measuring the current. A measurement of the electric field would also be conceivable.
  • the arc that occurs in the event of a breakdown could be transferred from the fault in the insulation to the housing of the chamber by means of an optical detection device, such as, B. a camera, detected or made visible.
  • an electrode could be placed within the chamber, e.g. B. in the form of a flat or plate-shaped electrode, which is preferably used as a support surface for the line to be tested.
  • test device comprises a measuring device for monitoring the electrical line.
  • the measuring device can serve to monitor or control the proper application of voltage. The aim here is to check whether the test voltage is also arriving in the line to be tested. Alternatively or additionally, the Measuring device also serve to detect a voltage drop due to a breakdown at a defect.
  • this measuring device is arranged outside the chamber and is connected to an electrical connection point inside the chamber.
  • the measuring device can, for. B. an ammeter, a voltmeter, an electric field meter and / or an optical detection device (such as a camera), which is set up for the optical detection of an arc emerging from the insulation.
  • a preferred embodiment is characterized in that at least two electrical connection points, preferably each in the form of a plug-in device part, are arranged inside the chamber, one of the connection points with a voltage source (arranged outside the chamber) and another connection point with the (outside the Chamber arranged) measuring device is connected.
  • An electrical line to be tested is connected with one of its ends via one connection point to the voltage source and with the other end via the other connection point to the measuring device.
  • connection device for feeding in the test voltage, optionally with a connection device that enables selective connection to the connection points.
  • a preferred embodiment is characterized in that at least two, preferably at least five electrical connection points, preferably each in the form of a plug-in device part, are arranged in the interior of the chamber, with one electrical feedthrough preferably leading out of the connection points from the chamber or with preferably the connection points have different shape.
  • connection points preferably each in the form of a plug-in device part
  • one electrical feedthrough preferably leading out of the connection points from the chamber or with preferably the connection points have different shape.
  • connection points are interchangeable so that the test device can be adapted for different plug geometries.
  • a preferred embodiment is characterized in that at least two, preferably at least five electrical connection points, preferably each in the form of a connector part, are anchored to a common carrier element, preferably in the form of a bar or plate, which can be removed from the housing of the chamber.
  • the connection points (connector part) are preferably individually removable from the common carrier element. This enables simple dismantling and subsequent replacement of the connection points.
  • a preferred embodiment is characterized in that the at least one electrical connection point is anchored in or on an inner wall of the chamber.
  • a preferred embodiment is characterized in that the at least one electrical connection point is connected to a voltage source arranged outside the chamber via the electrical feedthrough.
  • Test device has a vacuum pump connected to the chamber for evacuating the chamber.
  • Chamber by a tub-like part and a tub-like part covering cover is formed, wherein a seal is preferably provided between the tub-like part and cover, which is located in the closed state of the chamber between cover and tub-like part.
  • a preferred embodiment is characterized in that the at least one electrical connection point is arranged in a side wall of the tub-like part, the side wall enclosing an obtuse angle with the bottom of the tub-like part inside the chamber, the obtuse angle preferably between 100 ° and 150 °, preferably substantially 120 °.
  • the connection points are directed precisely towards the operator, so that the connection of the line can take place particularly easily.
  • test device has a preferably movable frame carrying the chamber, the chamber and the frame preferably forming a table.
  • the flexibility and the field of application of the test device are also increased here.
  • a preferred embodiment is characterized in that at least the tub-like part of the chamber forms an insert that can be removed from the frame. In this way the chamber can be replaced as a whole.
  • z. B the level of the test voltage, the test duration, the pressure in the chamber, the permissible limit current (leakage current) etc. to enable the test sequence to be controlled
  • z. B the level of the test voltage, the test duration, the pressure in the chamber, the permissible limit current (leakage current) etc. to enable the test sequence to be controlled
  • / or - Document the test results (actual test conditions, achieved current, voltage drop due to a breakdown, time of breakdown, location of the defect, etc.).
  • a preferred embodiment is characterized in that the frame carries at least one voltage source connected to the at least one electrical connection point and / or a vacuum pump connected to the chamber and / or a control device for controlling the test device and / or a user interface for operating the test device.
  • test device has at least one sensor device for detecting and / or localizing a breakdown through the insulation of the electrical line to be tested, the sensor device preferably having a measuring device connected to an electrical connection point, in particular an ammeter or a voltmeter , includes.
  • the sensor device could e.g. B. also include an image capturing device, in particular a camera.
  • a preferred embodiment is characterized in that the chamber, preferably in its cover, has at least one viewing window (e.g. in the form of a porthole) or at least one transparent section.
  • the operator can immediately recognize a breakdown which occurs in the form of an electric arc.
  • the viewing window can optionally be used for demonstration purposes, but is not absolutely necessary. In particular for an optical evaluation, e.g. B. by means of a camera arranged within the chamber, it would be preferred not to provide any viewing windows.
  • a preferred embodiment is characterized in that the cover is formed by a preferably horizontally displaceable plate, which forms a table top of the test device.
  • a preferred embodiment is characterized in that the cover can be displaced between the closed and the open position, preferably in a horizontal direction, the cover preferably being guided by a guide, preferably on roller bearings.
  • a preferred embodiment is characterized in that a seal for sealing the interior of the chamber from the area outside the chamber is arranged in an area between the electrical connection point and a wall of the chamber. This ensures a vacuum-tight transition with the possibility of exchanging the connection point at the same time.
  • a preferred embodiment is characterized in that the at least one electrical connection point has a seal, preferably facing the interior of the chamber, in order, when the electrical conductor is connected, to form the interior of the chamber against one formed between the electrical connection point and a plug of the electrical line to be tested Space - airtight and / or electrically - to be sealed.
  • This seal can, however, also be understood as an electrical seal (i.e. as insulation) which prevents an electrical flashover to the electrical plugs of the connection points.
  • a preferred embodiment is characterized in that the at least one electrical connection point has a fixing mechanism, preferably a snap mechanism, for fixing a plug-in device part of the electrical line to be tested at the connection point.
  • a preferred embodiment is characterized in that a spacer made of electrically insulating material, preferably in the form of a grid or net or in the form of strips, is provided on the bottom of the chamber Spaced an electrical line to be tested is arranged from the bottom of the chamber.
  • test method for testing the insulation of an electrical line, in particular a cable or a cable harness, preferably for detecting defects in the insulation of the electrical line, by means of a test device according to the invention, the method comprising the steps:
  • Evacuation of the chamber preferably until a pressure of less than 500 mbar, preferably less than 200 mbar, particularly preferably at least less than 100 mbar, is reached in the chamber,
  • a further step of the method comprises the — direct or indirect — monitoring of the electrical line to be tested by means of a sensor device (or measuring device).
  • a sensor device or measuring device.
  • the dielectric strength of the insulation can be checked and / or a possible breakdown can be detected and / or one or more flaws in the insulation can be found.
  • the breakdown detection can take place by evaluating the current for exceeding an adjustable limit value.
  • the electrical voltage can also be applied between two or more electrical lines to be tested. The measurement is then carried out accordingly between the lines. While the electrical voltage is applied, the sensor device, which - directly or indirectly - can be connected to the electrical line to be tested and / or the electrode, monitors whether a breakdown occurs or the extent to which the electrical voltage drops.
  • the sensor device in the form of an electrical measuring device can, for. B. include an ammeter, a voltmeter and / or an electric field meter.
  • the sensor device could also be an optical detection device (such as a camera, for example) for detecting an arc emerging from the insulation.
  • a preferred embodiment is characterized in that the step of applying the electrical voltage and the step of monitoring the electrical line to be tested are carried out with the chamber evacuated (ie when there is negative pressure or vacuum in the chamber), preferably at a pressure in the Chamber of less than 500 mbar, preferably less than 200 mbar, particularly preferably less than 100 mbar.
  • a preferred embodiment is characterized in that the applied electrical voltage is between 1 kV and 50 kV, preferably between 10 kV and 30 kV.
  • 1 shows an embodiment of a test device according to the invention
  • 2 shows the outside of a side wall of the chamber
  • FIG. 4 shows the evacuable chamber in detail
  • FIG. 5 shows the rear side of the test device with voltage source
  • test device 1 for testing the insulation of an electrical line 2, in particular a cable or a cable harness. Defects in the insulation of the electrical line 2 are particularly detected.
  • the test device 1 has a tightly closable, evacuable chamber 3 for completely receiving the electrical line 2 to be tested.
  • several electrical connection points 6 - here in the form of plug-in device parts, such as connector plugs or connection sockets - are arranged for connecting the electrical line 2 to be tested.
  • An electrical feedthrough 7 leads from the connection points 6 out of the chamber 3 (FIGS. 2, 3 and 4) in order to connect the connection point 6 to a voltage source 8, which can be part of a measuring device.
  • the interior of the chamber 3 is sealed off from the outside in a vacuum-tight manner and / or can be evacuated.
  • the housing or a housing part of the chamber 3 forms this electrode.
  • at least a part, preferably at least half or at least the bottom, of the housing of the chamber 3 is formed from conductive material, in particular metal, which is connected to a voltage source 8 and / or a potential, preferably earth ( Fig. 4).
  • connection point 6 it would also be possible to provide only one connection point 6, but two or more are preferred in order to be able to connect the lines to be tested at both ends or several lines at the same time or complex cable harnesses with several connections.
  • the individual connection points 6 can also have a different shape.
  • connection points 6 are anchored on a common carrier element 9, preferably in the form of a bar or plate, which can be removed from the housing of the chamber 3.
  • the electrical connection point (s) 6 is / are anchored in or on an inner wall of the chamber 3.
  • connection point 6 is connected via the electrical feed-through 7 to a voltage source 8 arranged outside the chamber 3.
  • a vacuum pump 10 for evacuating the chamber 3 is also connected to the chamber 3.
  • the chamber 3 in FIGS. 1 and 4 is formed by a trough-like part 4 and a cover 5 covering the trough-like part 4.
  • a seal 14 can be provided between the trough-like part 4 and the cover 5, which seal lies between the cover 5 and the trough-like part 4 in the closed state of the chamber (FIG. 4).
  • the electrical connection points 6 are arranged in a side wall 4 a of the tub-like part 4.
  • This side wall 4a encloses an obtuse angle a with the bottom 4b of the trough-like part 4 in the interior of the chamber 3.
  • the obtuse angle a is preferably between 100 ° and 150 °, e.g. B. essentially 120 °.
  • the test device 1 - according to the preferred embodiment - has a frame 13 that carries the chamber 3, preferably movable (see rollers in FIGS. 1 and 5).
  • the chamber 3 and the frame 13 can form a table.
  • At least the trough-like part 4 of the chamber 3 can be designed as an insert that can be removed from the frame 13 (FIG. 4).
  • the frame 13 can have at least one voltage source 8 connected to the at least one electrical connection point 6 and / or a vacuum pump 10 connected to the chamber 3 and / or a control device
  • test device 12 for example a screen and / or a keyboard and / or a touchscreen for operating the test device 1.
  • the chamber 3 - here: in its cover 5 - can have at least one viewing window 15 or at least one transparent section.
  • the cover 5 of the chamber 3 is formed by a plate which is preferably horizontally displaceable and which forms a table top of the test device 1.
  • the cover 5 can thus be displaceable between the closed and open position, preferably in a horizontal direction.
  • the cover is guided by a guide 18, preferably on roller bearings. This guide 18 is arranged in Fig. 1 in each case in the edge area of the table.
  • connection point 6 here a connection socket
  • plug-in device part 20 of a line 2 to be tested It can be seen that in an area between the electrical connection point 6 and a wall of the chamber 3, a seal 16 for Sealing of the interior of the chamber 3 with respect to the area outside the chamber 3 is arranged.
  • the at least one electrical connection point 6 has a seal 17 facing the interior of the chamber 3 or, when the line 2 is connected, the plug device part 20, in order to connected electrical conductor 2 to seal the interior of the chamber 3 against a space formed between the electrical connection point 6 and the connector part 20.
  • the at least one electrical connection point 6 can also have a fixing mechanism, preferably a snap mechanism, for fixing a plug-in device part 20 of the electrical line 2 to be tested at the connection point 6.
  • FIG. 4 shows a further preferred feature, namely a spacer 19 made of electrically insulating material, preferably in the form of a grid or net or in the form of strips, arranged on the floor 4b of the chamber, for spacing an electrical line 2 to be tested from the floor 4b of the Chamber 3, which bottom 4b also forms the (counter) electrode here.
  • a spacer 19 made of electrically insulating material, preferably in the form of a grid or net or in the form of strips, arranged on the floor 4b of the chamber, for spacing an electrical line 2 to be tested from the floor 4b of the Chamber 3, which bottom 4b also forms the (counter) electrode here.
  • FIG. 6 shows a further embodiment of the invention with sensor devices 21 for detecting and / or localizing a breakdown through the insulation of the electrical line 2 to be tested and / or for monitoring or controlling the applied electrical (test voltage.
  • An electrical measuring device 22 for example an ammeter and / or voltmeter outside the chamber 3 and / or an optical detection device 23 (for example a camera) inside the chamber 3.
  • connection points 6 there can be at least two electrical connection points 6 inside the chamber 3, one of the connection points 6 with a voltage source 8 (arranged outside the chamber 3) and another connection point 6 with the (outside the chamber 3 arranged) measuring device 22 is connected.
  • An electrical line 2 to be tested is connected with one of its ends via one connection point 6 to the voltage source 8 and with another end via the other connection point to the measuring device 22.
  • the measuring device 22, the voltage source 8 and possibly also the control device 11 can be integrated in a common structural unit.
  • the electrode 24 is shown separately in FIG. 6. As already mentioned several times, the housing of the chamber 3 itself can also form the counter electrode.
  • the sensor devices 21 - like the voltage source 8 - are connected to the control device 11 and are controlled by this.
  • the invention also relates to a test method for testing the insulation of an electrical line 2, in particular a cable or a cable harness, preferably for detecting defects in the insulation of the electrical line 2, by means of a test device according to the invention.
  • the procedure consists of the following steps:
  • the sensor device 21 While the electrical voltage is applied, the sensor device 21, which is connected - directly or indirectly - to the line 2 to be tested and / or to the electrode 24, monitors whether a breakdown occurs or the extent to which the electrical voltage drops.
  • the sensor device 21 can, for. B. an ammeter, a voltmeter, an electric field meter and / or an optical detection device (such as a camera) for detecting an arc emerging from the insulation.
  • a preferred embodiment is characterized in that the step of applying the electrical voltage and the step of monitoring the electrical line 2 are carried out with the chamber 3 evacuated (ie when there is negative pressure or vacuum in the chamber 3), preferably at a pressure in of the chamber 3 of less than 500 mbar, preferably less than 200 mbar, particularly preferably less than 100 mbar.
  • test device preferably with regard to user-friendliness and efficient and time-saving tests, as well as the test procedure itself and the devices and / or controls required for it.

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  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Biochemistry (AREA)
  • Analytical Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Testing Relating To Insulation (AREA)
  • Locating Faults (AREA)

Abstract

L'invention concerne un dispositif de test (1) pour tester l'isolation d'une ligne électrique (2), notamment d'un câble ou d'un faisceau de câbles, dans le but de détecter des défauts dans l'isolation de la ligne électrique (2). Le dispositif de test (1) comporte une chambre (3) pouvant être fermée de manière étanche, dans laquelle le vide peut être créé, destinée à recevoir complètement la ligne électrique à tester. L'intérieur de la chambre (3) comporte au moins une zone de raccordement électrique (6), de préférence sous forme de pièce de dispositif d'enfichage, destinée au raccordement de la ligne électrique à tester (2), un passage électrique (7) s'étendant de la zone de raccordement (6) vers l'extérieur de la chambre (3).
EP20747143.4A 2019-07-31 2020-07-24 Dispositif de test pour lignes électriques Pending EP4004568A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19189488.0A EP3771911B1 (fr) 2019-07-31 2019-07-31 Dispositif de contrôle pour conduites électriques
PCT/IB2020/057015 WO2021019400A1 (fr) 2019-07-31 2020-07-24 Dispositif de test pour lignes électriques

Publications (1)

Publication Number Publication Date
EP4004568A1 true EP4004568A1 (fr) 2022-06-01

Family

ID=67614415

Family Applications (2)

Application Number Title Priority Date Filing Date
EP19189488.0A Active EP3771911B1 (fr) 2019-07-31 2019-07-31 Dispositif de contrôle pour conduites électriques
EP20747143.4A Pending EP4004568A1 (fr) 2019-07-31 2020-07-24 Dispositif de test pour lignes électriques

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP19189488.0A Active EP3771911B1 (fr) 2019-07-31 2019-07-31 Dispositif de contrôle pour conduites électriques

Country Status (9)

Country Link
US (1) US11867743B2 (fr)
EP (2) EP3771911B1 (fr)
JP (1) JP2022542469A (fr)
CN (1) CN114207430A (fr)
ES (1) ES2965924T3 (fr)
HU (1) HUE064680T2 (fr)
MX (1) MX2022001097A (fr)
PL (1) PL3771911T3 (fr)
WO (1) WO2021019400A1 (fr)

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CN114427483B (zh) * 2021-12-24 2024-07-23 呼和浩特科林热电有限责任公司 一种发电机组多场景检测装置
DE102022128550A1 (de) * 2022-10-27 2024-05-02 Lisa Dräxlmaier GmbH Verfahren zur isolationsprüfung von elektrischen netzwerken eines kabelbaums

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PL3771911T3 (pl) 2024-03-04
EP3771911A1 (fr) 2021-02-03
WO2021019400A1 (fr) 2021-02-04
JP2022542469A (ja) 2022-10-03
US20220291274A1 (en) 2022-09-15
MX2022001097A (es) 2022-04-26
HUE064680T2 (hu) 2024-04-28
US11867743B2 (en) 2024-01-09
ES2965924T3 (es) 2024-04-17
CN114207430A (zh) 2022-03-18
EP3771911B1 (fr) 2023-09-06

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