DE202017107108U1 - High-voltage socket contact with two indentical contact parts and electrical plug connection with a high-voltage socket contact - Google Patents

Abstract

HV socket contact (1) for HV measurements and four-wire measurements with
A first contact part (2) and a second contact part (3) each having a contact region (6) at one end and a connection region (7) at another end,
• an insulation plate (4) which is arranged between the first contact part (2) and the second contact part (3) and the two contact parts (2, 3) electrically isolated from each other, and
An electrically insulating sleeve (5) which is designed to receive the first contact part (2), the second contact part (3) and the intermediate insulating plate (4) in a form-locking manner,
• wherein the first contact part (2) and the second contact part (3) and the intermediate insulating plate (4) in the contact region (6) form a receptacle (8) for a contact pin (101) of an HV connector housing (102).

Description

Technical area

The present invention relates to a high voltage (HV) -Buchsenkontakt and an electrical connector for high-voltage (HV) measurements and four-wire measurements with high-voltage (HV) connector housings equipped high-voltage (HV) lines.

State of the art

To ensure the safety and accuracy of an HV line, HV lines are checked for dielectric strength. Furthermore, a four-wire measurement is usually carried out for the examination of the functionality of HV lines and their connector housing, in which the sum of the electrical resistance of the HV line, the connector housing and the contact resistance of the connection between the HV line and connector housing is determined ,

From the state of the art, test plugs with two mutually insulated contact points, which are contacted with a socket of the HV plug housing, are known for carrying out the measurements on a HV line equipped with an HV plug housing.

Such an electrical connection with a high voltage (HV) test pin for corresponding measurements is for example in the EN 20 2016 101 839 U1 disclosed. Here, the HV test pin consists of two identical pins, each forming a contact point between HV test pin and the socket of a plug. An insulation plate, which is arranged between the two contact pins, electrically isolates the two contact pins from each other.

The HV test pin is only suitable for contacting with a socket.

For connector housings with contact pins, therefore, test adapters with individual test probes, which are pressed into a purpose-made insulated insert, are used.

1 shows such a known from the prior art arrangement with two test pins 100 that has a contact pin 101 a plug housing 102 to contact. To make electrical contact between the test pins 100 and contact pin 101 to reach the test pins 100 be deflected laterally. There is a great risk of breakage or plastic deformation of the test pins 100 , whereby a constant contact pressure force can no longer be ensured. Because the test pins 100 also have no insulation to the outside, care must be taken that no flashover to adjacent test pins arise.

Description of the invention

It is therefore an object of the invention to provide a HV contact socket for HV measurements and four-wire measurements on a HV plug housing with contact pins, which is stable against electrical and mechanical stress and allows good contact with the contact pin of the HV plug housing.

This object is solved by the subject matters of the independent claims. Advantageous developments of the invention are specified in the dependent claims, the description and the accompanying figures.

According to the invention, an HV socket contact with a first contact part and a second contact part, an insulation plate, and with an electrically insulating sleeve is provided for HV measurements and four-wire measurements. The two contact parts each have a contact region at one end and a connection region at another end. The insulating plate is disposed between the first contact part and the second contact part and electrically isolates the two contact parts from each other. In a simple way, thus, a HV contact socket can be formed with two separate contact points. The first contact part, the second contact part and the intermediate insulating plate form a receptacle for a contact pin of a plug in the contact area. The insulating sleeve is designed for positive reception of the first contact part, the second contact part and the intermediate insulating plate and essentially serves to hold the contact parts and the insulation plate in the correct position to each other. Slippage of the contact parts against each other, which can lead to short circuits, is prevented.

Both for the test for dielectric strength and for the four-wire measurement, the HV female contact according to the invention thus provides two separate contact surfaces to the contact pin. In contrast to the contacting of the contact pin by means of the two spaced test probes HV contact socket has the advantage that can be completely enclosed by the high formal and dimensional adjustment of the HV socket contact to the contact pin of the contact pin. Thus, a constant contact pressure force between the HV female contact and the contact pin can be made over a very large contact area. Damage during insertion or removal by the deflection of the test pins are avoided by the massive formation of the contact parts. In addition, the insulating sleeve avoids flashovers to adjacent test probes, shields, etc., at the high voltages and currents required for the tests. Such an HV female contact provides a consistent and reproducible measurement arrangement so that high quality measurement results can be achieved.

For testing for dielectric strength, the HV female contact according to the invention is slid onto a contact pin of the plug housing of a multicore HV line, whereby the two contact parts are contacted with a conductor of the HV line. At the other end of the line another, different from the first conductor conductor, the multi-core HV line is contacted. A high voltage is now applied between the two conductors via the first contact part, which is electrically connected in the connection region to a connecting lead of the test station.

To measure the voltage drop, a voltmeter is connected in parallel to the HV line. At the plug housing, the contact for this purpose is provided by the second contact part, which is connected in the connection area with a measuring line. A voltage dip on the meter indicates an insulation defect or a flashover.

In the case of carrying out a four-wire measurement, the same conductor is contacted at both line ends of the multicore HV line. The first contact part supplies the conductor with a known current via the contacted connector housing. In the connection region of the first contact part to a line for the power supply is attached. About the second contact part, the voltage drop, which is caused by the resistance of the plug housing and the contacted line, can be tapped directly on the connector housing again. A line leading to a voltage measuring device is electrically connected to the connection region of the second contact part for this purpose. About the Ohm's law, the resistance of the entire system of connector housing and HV line, determined.

Advantageously, the contours of the broad sides of the insulation plate of the contour of the adjacent broad side of the first contact part and the second contact part. Thus, the broad sides of the contact parts are over the entire surface on the broad side of the insulation board. This effectively prevents the two contact parts from touching each other, which in turn can lead to short-circuiting and damage to HV socket contact, plug housing or test station.

In a preferred embodiment, the receptacle for the contact pin is formed by a respective recess extending in the longitudinal direction in the first and in the second contact part. The two contact parts and the insulating plate lying therebetween thus each form part of the receptacle for the plug. The recess of the first and second contact part in each case has the shape of a circular segment, which complement each other by joining the two contact parts and the insulating plate whose contours are adapted to the contours of the adjacent contact pins to a circular in cross section recording. Since the test object to be contacted is a cylindrical contact pin of an HV plug housing, a receptacle complementary to the contact pin which completely surrounds the contact pin is formed. It is particularly advantageous if the recess of the first and second contact part is formed in each case by a circular segment with the same cross-sectional area and the insulating plate lying therebetween is as thin as possible. This results in the largest possible contact surface on the contact pin for both contact parts. In this case, it is in particular proposed that the depression is closed towards the connection region and open towards the other end of the contact region. Furthermore, the insulating plate can also be designed such that it also covers the transition between the open contact region and the closed connection region and thus forms a contact protection, which prevents a connection between the two Kontakteilen can be made on the front side of the contact pin. Alternatively, the front side of the contact pin can be equipped with a corresponding contact protection. Such contact protection is useful insofar as it guarantees a reliable separation of the two Kontakteile for a four-wire measurement.

A particularly simple assembling of the HV socket contact can be achieved if the insulating sleeve is designed as a hollow cylinder and the first contact part, second contact part and insulation plate complement each other to a cylinder whose outer diameter corresponds to the inner diameter of the hollow cylinder of the insulating sleeve. The two contact parts and the insulation plate can then be pushed together inserted into the insulating sleeve and are held in the correct position to each other by the insulating sleeve. On a correct alignment of the insulating sleeve against the assembled contact parts and the insulation plate must also not be considered when inserting.

Advantageously, the first contact part and the second contact part are identical. As a result, on the one hand, the production costs can be reduced, since only one form of the contact part has to be produced, on the other hand form both contact parts, in particular in conjunction with a very thin insulation plate, a large contact surface for the contact pin of the connector housing. Also can be avoided by the identical design of the contact parts assembly errors.

First contact part and insulating plate and second contact part and insulating plate are preferably glued together. This prevents slippage of the contact parts and the insulation plate against each other. By slipping the insulation plate, the contact parts would no longer be isolated over the entire surface of each other electrically. In addition to short circuits, this can also lead to flashovers between the contact parts. Incidentally, it facilitates the insertion of the contact parts and the insulation plate in the insulating sleeve. So that the diameter of the assembled parts is not increased by the introduction of an adhesive between the first contact part and the insulating plate or between the second contact part and the insulating plate, depressions can be introduced into the first contact part and the second contact part, which receive the adhesive.

Since the HV contact from the two contact parts, insulation plate and the insulating sleeve is plugged together, arise due to tolerances between the individual parts small gaps, so-called joints. HV lines, e.g. be used in the engine compartment of a vehicle, must be waterproof. In a preferred embodiment, therefore, these joints between the first contact part, second contact part, insulation plate and insulating sleeve are sealed vacuum-tight. In addition to a test for electrical properties can thus be carried out in the same test arrangement simultaneously or directly one after another, a leak test. Therefore, only one test arrangement is necessary, in which the HV plug must be inserted, whereby time and costs can be saved.

The insulating sleeve preferably has a stop for the contact parts. This is by a radially inwardly directed annulus whose inner diameter corresponds to the inner diameter of the circular receptacle, which is formed by the two contact parts. Such a designed stop can take over in particular two functions. On the one hand, a correct positioning of the two contact parts and the insulation plate is ensured to each other, since this simply has to be pushed into the sleeve until it stops. On the other hand, the stop forms an end insulation of the HV contact socket. The two contact parts are thereby completely insulated from each other to the outside, so that current flashovers to adjacent test probes, shields, etc. are excluded as well as short circuits by Fehlkontaktierungen on the front page.

Furthermore, it is advantageous if first contact part and / or second contact part have at least one contacting element in the connection region. The contacting element provides a defined connection possibility for the lines of the test station. In particular, the lines can be reliably and easily soldered to the contacting element.

The first and / or the second contact part is advantageously made of a copper-zinc alloy, in particular CuZn40. Due to the hardness and strength of the alloy, the contact parts are stable against mechanical stress. At the same time, the copper-zinc alloy has a high melting point, so that the contact parts do not deform even at high thermal stress due to high voltages and high currents. Preferably, the contact parts are additionally silvered. As a result, the electrical conductivity can be further improved and a low contact resistance can be achieved, so that the measurement results do not depend on the resistance of the HV-Buchungskontakts.

Furthermore, it is advantageous if the insulation plate and / or the insulating sleeve are made of polyetheretherketone. Polyetheretherketone is a high temperature resistant thermoplastic. Even with high thermal loads, such as those that can occur with high-voltage and high-current measurements, the dimensions of the parts made of polyetheretherketone do not change, so that reliable operation of the HV socket contact can be guaranteed.

Another aspect of the present invention relates to an electrical connector for HV measurements and four-wire measurements with a connector housing and at least one HV female terminal according to the invention as described above. The connector housing has at least one contact pin, is pushed onto the HV socket contact for contacting. The contact pin preferably has a circumferential groove with an inserted elastic round spring. The HV socket contact is ideal for contacting with such a round spring. Since the HV socket contact completely surrounds the contact pin and thus the round spring, damage to the round spring by snagging, as with the individual test probes, can be prevented. The outside diameter of the round spring is slightly larger than the inside diameter of the HV female contact, so the round spring in the HV female contact is slightly compressed and exerts a uniform force on the HV female contact along the entire circumference. Thus, the round spring and HV socket contact abut each other and there are many points of contact between the round spring and the HV socket contact.

It is particularly preferred if the HV socket contact is arranged in an insert, which forms a mating connector complementary to the connector housing. Due to the exact dimensional adjustment of the mating connector to the connector housing and the HV socket contact with the contact pin a secure and reproducible electrical connection between mating connector and connector housing can be made. This is particularly advantageous if the connector housing has more than one contact pin. The HV socket contacts are then already held in the correct position in the mating connector, so that by mating the mating connector with the connector housing all pins can be contacted simultaneously.

Furthermore, it is advantageous if the connection between the connector housing and an attachable mating connector is formed vacuum-tight. Together with a vacuum-sealed HV socket contact, the entire system of plug housing, and HV line in the same test arrangement, in addition to a test of the electrical properties, and a leak test can be performed. The insertion of the HV connector in a further test arrangement for leak testing can be saved.

Short description of the figures

Hereinafter, an advantageous embodiment of the invention will be explained with reference to the accompanying figures. Show it:

1 shows a known from the prior art test adapter for contact pins of HV connector;

2 shows an HV female contact according to the invention in an exploded view;

3a shows a contact part in a perspective view;

3b shows an insulation plate in a perspective view;

3c shows a cross section through an insulating sleeve;

4 shows a longitudinal section through an HV female contact according to the invention;

5a shows a cross section of the HV female contact according to the invention in the contact area;

5b shows a cross section of the HV female contact according to the invention in the connection area;

6 shows a plug connection between a HV socket contact according to the invention and the contact pins of a HV plug in a cross-sectional view; and

7 shows a complementary to a HV plug formed mating connector.

The figures are merely schematic representations and serve only to illustrate the invention. Identical or equivalent elements are consistently provided with the same reference numerals.

The structure of a HV socket contact according to the invention 1 is in 2 shown. The HV socket contact 1 comprises a first contact part 2 and a second contact part 3 , The first contact part 2 and the second contact part 3 are identical and can be made, for example, from a copper-zinc alloy. Between the first contact part 2 and the second contact part 3 is an insulation plate 4 arranged from an electrically insulating material such as polyetheretherketone, the two contact parts 2 . 3 electrically isolated from each other. An electrically insulating sleeve 5 , eg also made of polyetheretherketone, takes the first contact part 2 , the second contact part 3 and the intervening insulation board 4 positive locking. First contact part 2 and second contact part 3 each form a circle segment. Along with the between first contact part 2 and second contact part 3 lying insulation plate 4 The parts complement each other to form a cylinder with an outside diameter d ₁ which is approximately equal to the inside diameter D of the hollow-cylindrical insulating sleeve 5 corresponds (cf. 5 ). The contact parts 2 . 3 and the insulation board 4 are assembled in the insulating sleeve 5 pushed in so that the insulating sleeve 5 the contact parts 2 . 3 and the insulation board 4 completely encloses.

A detailed description of the individual parts making up the HV socket contact 1 is made on the basis of the 3a to 3c ,

In 3a is a contact part, both first 2 as well as a second contact part 3 in the 2 shown HV socket contact 1 is used, shown. The contact part 2 . 3 has a contact area 6 , which serves to receive a contact pin, and a connection area 7 to which the connection and test leads of the test station are electrically connected. The recording 8th for the contact pin is by a longitudinal recess 9 introduced in the form of a circle segment. By joining the two identical contact parts 2 . 3 and the insulation board 4 the depressions complement each other 9 to a circular in cross-section recording 8th with a Inner diameter d ₂ . The inner diameter d ₂ is chosen so that a cylindrical contact pin form fit of the recording 8th is recorded. To one end of the contact area 6 there is the depression 9 open, allowing the contact pin from this side into the receptacle 8th can be inserted. At the recording 8th opposite end of the contact area 6 closes the connection area 7 at. The connection area 7 has a contacting element 10 which offers an improved connection possibility for the lines of the test station. In particular, the lines with the contacting element 10 be soldered reliably and easily. Furthermore, in 3a to realize that the contact part 2 . 3 a hollow 11 having. The hollow 11 can be the glue with which the contact part 2 . 3 and the insulating plate 4 are glued together, record. This prevents the outer diameter d ₁ of the two identical contact parts 2 . 3 and the insulation board 4 compound cylinder increased by an adhesive layer.

3b shows an insulation plate 4 between two identical contact parts 2 . 3 as in 3a shown is arranged. A comparison of 3a and 3b shows that the contour of the broadsides 12 the insulation plate 4 doing the contour of the flattened broadside 13 the two contact parts 2 . 3 ( 3a ) corresponds. The contact part 2 . 3 and the insulation board 4 So they have the same floor plan. The insulation plate 4 thus isolates the two contact parts 2 . 3 over the entire surface of each other. The recording 8th for the contact pin is through a U-shaped cutout 14 in the contact area 6 the insulation plate 4 educated. In the connection area 7 on the other hand is the insulation plate 4 consistently formed. The longitudinal edge 15 the insulation plate 4 is rounded. The diameter of the circle of curvature of the rounded longitudinal edges 15 corresponds to, also the diameter d ₁ of the two identical contact parts 2 . 3 and the insulation board 4 composite cylinder.

In an alternative embodiment, not shown, of the insulation plate 4 this may additionally have a contact protection. This is at the transition between contact area 6 and connection area 7 one each of the wells 9 of the contact part 2 . 3 formed according trained circle segment to the insulation plate. As a result, a kind of contact protection is formed, which prevents over the front side of the contact pin a connection between the two Kontakteilen 2 . 3 can be made and thus guarantees that the two contact parts 2 . 3 reliable are separated from each other.

One for holding two identical contact parts 2 . 3 and an intermediate insulation plate according to 3a respectively. 3b trained insulating sleeve is in 3c shown. The insulating sleeve 5 is a hollow cylinder whose inner diameter D is approximately the outer diameter d _{1 of} the assembled contact parts 2 . 3 and the intervening insulation plate 4 corresponds (cf. 5 ). The insulating sleeve 5 points to its front side 16 , that side of the one contact pin in the HV socket contact 1 is inserted, a stop 17 on. This stop 17 is by a radially inwardly directed annulus, the inner diameter of the inner diameter d _{2 of} the circular recording 8th passing through the two contact parts 2 . 3 is formed, corresponds. As a result, the two contact parts 2 . 3 also on the front side 16 HV contact 1 completely isolated, causing flashovers to an adjacent contact part 2 . 3 , Contact pins, shields, etc. can be prevented. Furthermore, the stop facilitates 17 the assembly of contact parts 2 . 3 , Insulation plate 4 and insulating sleeve 5 , The contact parts 2 . 3 and the insulation board 4 can just reach the stop 17 from the front side 16 opposite side in the insulating sleeve 5 be inserted.

In 4 is a longitudinal section through the composite HV female contact 1 shown. In this illustration, it can be seen how the insulation plate 4 between the first contact part 2 and second contact part 3 is arranged, and the two contact parts 2 . 3 isolated from each other. Also visible in this view is the positive reception of the two contact parts 2 . 3 and the insulation board 4 that until the stop 17 in the insulating sleeve 5 are inserted. The stop 17 has the same inner diameter d ₂ as the recording 8th on.

The 5a and 5b show the HV female contact according to the invention 1 each in a cross-sectional view.

The 5a shows the cross section of the in 2 respectively. 3 shown HV socket contacts 1 in the contact area 6 , It is easy to see how the cross-sectional areas of the first contact part 2 and the second contact part 3 yourself with the between first contact part 2 and second contact part 3 lying insulation plate 4 , to complement a circular cross-sectional area. This annulus with an inner diameter d ₂ forms the recording 8th for the positive reception of a contact pin. The insulating sleeve 5 , which is formed as already described above as a hollow cylinder, also has an annular cross-sectional area. In this view, the concentric arrangement of the insulating sleeve 5 clearly visible. The inner diameter D of the insulating sleeve 5 corresponds approximately to the outer diameter d _{1 of} the annulus of the first contact part 2 , second contact part 3 and insulation board 4 so that the the contact parts 2 . 3 and the insulation board 4 positive fit in the insulating sleeve 5 recorded become. Tolerance can be small gaps, so-called joints 18 , between the first contact part 2 , second contact part 3 , Insulation plate 4 and insulating sleeve 5 not avoid. These joints 18 are vacuum sealed so that the HV contact socket 1 can also be used for leak tests.

In 5b is the cross section of the connection area 7 the HV contact socket 1 shown. It can be seen that the cross-sectional areas of the first contact part 2 and the second contact part 3 are each formed as a circle segment. Along with the between first contact part 2 and second contact part 3 lying insulation plate 4 , The cross-sectional areas of the three parts complement each other to a circular cross-sectional area with the same outer diameter d ₁ as in the contact area 6 , so that the inner diameter D of the surrounding insulating sleeve 5 in connection area 7 and contact area 6 is the same size. Also visible in this view are the two troughs filled with adhesive 11 in first and second contact part 2 . 3 , the first contact part 2 or second contact part 3 each with the insulation plate 4 stick together.

6 shows a connector according to the invention for HV and four-wire measurements in a cross-sectional view with two HV female contacts according to the invention 1 , each on a contact pin 101 a plug housing 102 are attached and the contact pin 101 completely enclose. Both pins 101 each have one in a circumferential groove 103 inserted round spring 104 on, which is an electrically conductive connection to the contact pin 101 manufactures. The outer diameter of the round spring 104 is slightly larger than the outside diameter of the contact pin 101 so that the round spring 104 laterally over the contact pin 101 protrudes. Also, the outer diameter of the round spring 104 slightly larger than the inner diameter of the receptacle 8th HV socket contact 1 , The round spring 104 Therefore, when sliding the HV socket contact 1 compresses so that many contact points between the round spring 104 and the contact parts 2 . 3 of the HV socket contact. A missing contact between one of the two contact parts 2 . 3 and the contact pin 101 can therefore be excluded, which allows a high quality and reproducible measurement. On the front side, the contact pins 101 a shock protection 105 on. The contact protection 105 is made of an electrically insulating material and may be in the form of a cap on the contact pins 101 be plugged.

7 shows a mating connector 106 for producing a plug connection according to the invention for HV and four-wire measurements. The mating connector 106 is for contacting with a connector housing to be tested 102 as it is in 6 is shown trained. In this case, the connector housing 102 two parallel pins 101 on, so the mating connector 106 with two HV contact sockets according to the invention 1 Is provided. The HV contact sockets 1 are in a subblock 107 fixed. Preference is given to the HV contact sockets 1 detachable, eg by means of grub screws on the lower block 107 assembled. This allows a simple, individual replacement of the HV contact sockets 1 in the case of a broken HV contact socket 1 , On the subblock 107 becomes an insert 108 applied and with the subblock 107 connected, eg screwed. The use 108 is complementary to the test connector housing 106 educated. In addition to the two HV contact sockets 1 can the mating connector 106 Therefore further complementary to the HV connector housing formed elements, such as for an interruption detection 109 , exhibit. The HV contact sockets 1 are in use 108 used and the transitions between HV socket contacts 1 and use 108 sealed. Also the HV socket contacts 1 are formed vacuum-tight. A plug connection by means of such a mating connector 106 is therefore not only suitable for checking the electrical properties of the plug housing 102 but also for a tightness test.

LIST OF REFERENCE NUMBERS

1

HV socket contact

2

First contact part

3

Second contact part

4

insulation plate

5

insulating sleeve

6

contact area

7

terminal area

8th

admission

9

deepening

10

contacting

11

trough

12

Broad side of the insulation plate

13

Broad side of the contact part

14

U-shaped neckline

15

longitudinal edge

16

front

17

attack

18

Put

100

test pin

101

pin

102

HV connector housing

103

groove

104

around spring

105

contact protection

106

Mating connector

107

sub-block

108

commitment

109

Break detection

d ₁

Outer diameter of the cylindrical composite contact parts and the insulation plate

d ₂

Inner diameter of the cylindrical composite contact parts and the insulation plate

D

Inner diameter of the insulating sleeve

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 202016101839 U1 [0004]

Claims (16)

HV socket contact ( 1 ) for HV measurements and four-wire measurements with • a first contact part ( 2 ) and a second contact part ( 3 ), each at one end a contact area ( 6 ) and at another end a connection area ( 7 ), an insulation plate ( 4 ), which between the first contact part ( 2 ) and the second contact part ( 3 ) is arranged and the two contact parts ( 2 . 3 ) electrically isolated from each other, and • an electrically insulating sleeve ( 5 ), which for the positive reception of the first contact part ( 2 ), the second contact part ( 3 ) and the intermediate insulating plate ( 4 ), wherein the first contact part ( 2 ) and the second contact part ( 3 ) as well as the intermediate insulating plate ( 4 ) in the contact area ( 6 ) a recording ( 8th ) for a contact pin ( 101 ) of an HV connector housing ( 102 ) train. HV socket contact ( 1 ) according to claim 1, wherein the contour of the broadsides ( 12 ) of the insulation board ( 4 ) the contour of the adjacent broadside ( 13 ) of the first contact part ( 2 ) or of the second contact part ( 3 ) corresponds. HV socket contact ( 1 ) according to claim 2, wherein the receptacle ( 8th ) by a respective longitudinal recess ( 9 ) in the first contact part ( 2 ) and in the second contact part ( 3 ) is formed. HV socket contact ( 1 ) according to claim 3, wherein the depression leads to the end of the connection region ( 7 ) and to the other end of the contact area ( 6 ) is open. HV socket contact ( 1 ) according to one of the preceding claims, wherein the insulating sleeve ( 5 ) is designed as a hollow cylinder and first contact part ( 2 ), second contact part ( 3 ) and insulation board ( 4 ) to a cylinder whose outer diameter (d ₁ ) the inner diameter of the hollow cylinder (D) of the insulating sleeve ( 5 ). HV socket contact ( 1 ) according to one of the preceding claims, wherein the first contact part ( 2 ) and second contact part ( 3 ) are formed identically. HV socket contact ( 1 ) according to one of the preceding claims, wherein the first contact part ( 2 ) and insulating plate ( 4 ) and second contact part ( 3 ) and insulating plate ( 4 ) are glued together. HV socket contact ( 1 ) according to any one of the preceding claims, wherein joints ( 18 ) between first contact part ( 2 ), second contact part ( 3 ), Insulation board ( 4 ) and insulating sleeve ( 5 ) and are sealed vacuum-tight. HV socket contact ( 1 ) according to one of the preceding claims, wherein the insulating sleeve ( 5 ) a stop ( 17 ) for the contact parts ( 2 . 3 ) having. HV socket contact ( 1 ) according to one of the preceding claims, wherein the first contact part ( 2 ) and / or second contact part ( 3 ) in the connection area ( 7 ) at least one contacting element ( 10 ) exhibit. HV socket contact ( 1 ) according to one of the preceding claims, wherein the first contact part ( 2 ) and / or the second contact part ( 3 ) are made of a copper-zinc alloy. HV socket contact ( 1 ) according to one of the preceding claims, wherein the insulating plate ( 4 ) and / or the insulating sleeve ( 5 ) are made of polyetheretherketone. Electrical connector for HV measurements and four-wire measurements with a connector housing ( 102 ) and at least one HV socket contact ( 1 ) according to one of the preceding claims, wherein the plug housing ( 102 ) at least one contact pin ( 101 ) having. Electrical connector according to claim 13, wherein the at least one contact pin ( 101 ) a circumferential groove ( 103 ) with an inserted round spring ( 104 ) having. Electrical connector according to claim 13 or 14, wherein the at least one HV socket contact ( 1 ) in a mission ( 108 ) is arranged, one to the HV connector housing ( 102 ) complementary mating connector ( 106 ) trains. Electrical connector according to claim 15, wherein the connection between the HV plug housing ( 102 ) and an attachable mating connector ( 106 ) is formed vacuum-tight.

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