MEASURING DEVICE ASSEMBLY

Abstract

The invention relates to an assembly of a T-shaped connector (1) comprising a line input (4), a line output (5) and a measuring socket (2), wherein a measuring device (3), in particular an electrical voltage sensor, is arranged in the measuring socket (2), wherein the measuring device (3) comprises a coupling element (6) for connecting the measuring device (3) to the measuring socket (2), as well as a capacitor assembly with two electrodes (7, 8) located opposite one another, wherein the first electrode (7) is arranged on the coupling element (6) and wherein the second electrode (8) is arranged on an grounding element (9), wherein the measuring socket (2) has a receiving area (10) with a receiving area depth (10) and wherein the measuring device (3) has an insertion area (11) with an insertion area length (11), wherein the insertion area depth (10) is smaller than or equal to the insertion area length (11), and wherein the second electrode (8) extends into the insertion area (10) of the measuring socket (2).

Claims

1. An assembly of a T-shaped connector (1) comprising a line input (4), a line output (5) and a measuring socket (2), wherein a measuring device (3), in particular an electrical voltage sensor, is arranged in the measuring socket (2), wherein the measuring socket (2) has a receiving area (10) with a receiving area depth (10), characterised in that the measuring device (3) is configured according to claim 11, wherein the receiving area depth (10) is smaller than or equal to the insertion area length (11) of the measuring device (3), and the second electrode (8) of the measuring device (3) extends into the receiving area (10) of the measuring socket (2).

2. The assembly according to claim 1, characterised in that the outer surfaces of the receiving area (10) and of the insertion area (11) are designed to be substantially opposite, so that when the measuring device (3) is inserted into the measuring socket (2), the insertion area (11) rests flush against the receiving area (10) without forming any gaps.

3. The assembly according to claim 2, characterised in that the receiving area (10) and the insertion area (11) are frustoconically shaped.

4. The assembly according to claim 1, characterised in that the insertion area (11) has a length from 5 cm to 20 cm, in particular from 10 cm to 15 cm.

5. The assembly according to claim 1, characterised in that the coupling element (6) is in electrically conductive connection with a line element (14) of the connector.

6. The assembly according to claim 1, characterised in that the coupling element (6) is screwed to the connector (1), in particular to the line element (14).

7. The assembly according to claim 1, characterised in that the first electrode (7) and the second electrode (8) are connected to each other in an electrically conductive manner via a resistive element, in particular a resistance element (12).

8. The assembly according to claim 1, characterised in that each electrode (7, 8) comprises a plurality of substantially circularly arranged modulating elements (13), wherein the modulating elements (13) of the electrodes (7, 8) are arranged concentrically to each other, extend in opposite directions and at least partially overlap, namely preferably in a part of the insertion area (11) which extends beyond the receiving area (10).

9. The assembly according to claim 1, characterised in that the second electrode (8) extends at least 0.5 cm, in particular at least 1.0 cm, into the receiving area (10).

10. The assembly according to claim 1, characterised in that the connector (1) comprises an electrically insulating housing (15), the receiving area (10) forming part of the housing (15).

11. A measuring device for use in an assembly according to claim 1, in particular an electrical voltage sensor, wherein the measuring device (3) comprises a coupling element (6) for connecting the measuring device (3) to the measuring socket (2), as well as a capacitor assembly with two electrodes (7, 8) facing each other, wherein the first electrode (7) is arranged on the coupling element (6) and wherein the second electrode (8) is arranged on a grounding element (9), and wherein the electrodes (7, 8) comprise rod-shaped or finger-shaped modulating elements (13), and wherein the measuring device (3) has an insertion area (11) with an insertion area length (11), characterised in that the insertion region (11) extends from the coupling element (6) to a peripheral widening step (18), wherein the electrodes (7, 8) form an overlapping region (17) which also extends to the step (18).

Description

[0025] In the following, the present invention will be discussed in detail with reference to exemplary embodiments.

[0026] FIG. 1 shows a schematic sectional view of a assembly in accordance with the invention according to an embodiment of the present invention.

[0027] The assembly according to the invention comprises a connector 1, as well as a measuring device 3. The connector 1 is designed as a T-shaped connector 1 and it comprises a line input 4, a line output 5, and a measuring socket 2. Inside the housing 15, which is formed of electrically insulating plastic, a conductive element 14 is arranged, which is connected to an electrical power grid. In the area of the measuring socket 2, the line element 14 has a screw connection 16 for connection to the measuring device 3.

[0028] The measuring socket 2 comprises a frustoconical receiving area 10 with a receiving area depth 10 extending substantially from the opening area 20 of the receiving area 10 to the line element 14.

[0029] In this embodiment, the measuring device 3 is an ohmic-capacitive voltage divider designed to measure the voltage in the line element 14. The measuring device 3 comprises a first electrode 7 and a second electrode 8. A coupling element 6 is arranged on the first electrode 7, the coupling element being designed for connection to the line element 14. A grounding element 9 is arranged on the second electrode 8, the grounding element serving to connect to a not shown grounding. The measuring signal is tapped on the grounding element 9 side.

[0030] The two electrodes 7, 8 comprise finger-shaped modulating elements 13, the modulating elements 13 of each electrode 7, 8 being arranged in a ring shape. The modulating elements 13 of the electrodes 7, 8 have an overlapping area 17 along their longitudinal extension. The electrodes 7, 8 are connected to each other in an electrically conductive manner by a high-ohmic resistance element 12.

[0031] The insertion area 11 of the measuring device 3 has a frustoconical surface area with a geometry adapted to the shape of the receiving area 10. In particular, the inclinations of the contact surfaces of the receiving area 10 and the insertion area 11 are adapted to each other in order to ensure a flush abutment and to avoid the formation of cavities.

[0032] The insertion area 11 has an insertion area length 11 which extends substantially from the coupling element 6 to a stop in the form of a circumferential widening step 18 at the end of the insertion area 11. The insertion area length 11 is greater than the receiving area depth 10 so that a gap 19 is formed between the opening area 20 of the receiving area 10 and the step 18 of the measuring device 3. Preferably, the insertion area length 11 of the measuring device 3 is adapted so that it is greater than or equal to the respective receiving area depth 10 for different designs of the connector 1, in order to be able to use one design of the measuring device 3 on different connectors 1.

[0033] The modulating elements 13 of the second electrode 8 extend into the receiving area 10 of the measuring socket 2, so that the modulating elements 13 of the second electrode 8 bridge the gap 19. This prevents the occurrence of stray capacitances caused by the gap 19.

[0034] In this exemplary embodiment, the second electrode 8, in particular its modulating elements 13, extends about 2 cm into the insertion area 11 of the measuring device 3. This allows the second electrode 8 to extend into the receiving area 10 of the measuring socket 2 in most connectors available on the market.

[0035] In alternative embodiments not shown, the electrodes 7, 8 may also be plate-shaped or ring-shaped electrodes.

LIST OF REFERENCE SIGNS

[0036] 1 Connecting piece [0037] 2 Measuring socket [0038] 3 Measuring device [0039] 4 Line input [0040] 5 Line output [0041] 6 Coupling element [0042] 7 First electrode [0043] 8 Second electrode [0044] 9 Grounding element [0045] 10 Receiving area [0046] 10 Receiving area depth [0047] 11 Insertion area [0048] 11 Insertion area length [0049] 12 Resistance element [0050] 13 Modulating element [0051] 14 Line element [0052] 15 Housing [0053] 16 Screw connection [0054] 17 Overlapping area [0055] 18 Step [0056] 19 Gap [0057] 20 Opening area