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EP-4741837-A1 - ARRANGEMENT FOR DETECTING AT LEAST ONE ELECTRIC PARAMETER, ELECTRIC MEASUREMENT SYSTEM AND METHOD FOR MANUFACTURING AN ELECTRIC MEASUREMENT SYSTEM

EP4741837A1EP 4741837 A1EP4741837 A1EP 4741837A1EP-4741837-A1

Abstract

The disclosure concerns an arrangement (10) for detecting at least one electric parameter, an electric measurement (40) system and method for manufacturing an electric measurement system (40). The arrangement (10) is configured to detect at least one electric parameter and comprises: • a carrier element (12) having a plurality of through holes (14) for passing a respective first electrical conductor (11) through each through hole (14) along a respective first axis (A); • a plurality of detection units (16) each being aligned with one of the through holes (14), wherein each detection unit (16) comprises at least one second electrical conductor (20) which extends at least partially in a circumferential direction around the first axis (A); • one or more measurement units (24) each being configured to measure at least one electric parameter of one or more of the second electrical conductors (20), the electric parameter varying according to an electrical field generated by one of the first electrical conductors (11).

Inventors

  • ANDREESSEN, MAREC
  • WOLF, CHRISTIAN

Assignees

  • Janitza electronics GmbH

Dates

Publication Date
20260513
Application Date
20241111

Claims (16)

  1. An arrangement (10) for detecting at least one electric parameter, the arrangement comprising: • a carrier element (12) having a plurality of through holes (14) for passing a respective first electrical conductor (11) through each through hole (14) along a respective first axis (A); • a plurality of detection units (16) each being aligned with one of the through holes (14), wherein each detection unit (16) comprises at least one second electrical conductor (20) which extends at least partially in a circumferential direction around the first axis (A); • one or more measurement units (24) each being configured to measure at least one electric parameter of one or more of the second electrical conductors (20), the electric parameter varying according to an electrical field generated by one of the first electrical conductors (11).
  2. The arrangement (10) according to claim 1, wherein the carrier element (12) is a printed circuit board.
  3. The arrangement (10) according to any of the previous claims, wherein each detection unit (16) and/or the one or more measurement units (24) are surface mounted to the carrier element (12) and/or are soldered to the carrier element (12).
  4. The arrangement (10) according to any of the previous claims, wherein the second electrical conductor (20) of at least one of the detection units (16) extends with a closed circumference around the first axis (A), in particular wherein the second electrical conductor (20) has a hollow cylindrical shape.
  5. The arrangement (10) according to any of the previous claims, wherein the detection units (16) are capacitive voltage detection units.
  6. The arrangement (10) according to any of the previous claims, wherein at least one of the detection units (16) has a support member (18) extending at least partially in a circumferential direction around the first axis (A), wherein the second electrical conductor (20) is supported by the support member (18).
  7. The arrangement (10) according to claim 6, wherein the support member (18) is electrically non-conductive and/or wherein the support member (18) has a hollow cylindrical shape.
  8. The arrangement (10) according to claim 6 or 7, the support member (18) has a first face facing the first electrical conductor (11) and in particular extending circumferentially around the first electrical conductor (11), and wherein the support member (18) has a second face facing away from the first face, wherein the second electrical conductor (20) is arranged at the second face.
  9. The arrangement (10) according to any of the previous claims, wherein the detection units (16) are aligned along a second axis (B), in particular wherein the second axis (B) extends at an angle to each first axis (A) .
  10. The arrangement (10) according to any of the previous claims, further comprising at least one shielding structure (28) that is arranged in between at least two of the detection units (16) and that is configured to at least partially electromagnetically shield said detection (16) units from one another.
  11. The arrangement (10) according to claim 10, comprising a plurality of shielding structures (28) that are comprised by a common shielding member (26) arranged at the carrier member (12) .
  12. The arrangement (10) according any of the previous claims, wherein at least one of the detection units (16) has one second electrical conductor (20) that is electrically connected to the one or more measurement units (24) and at least one further second electrical conductor (20) that is electrically connected to a ground potential.
  13. An electric measurement system, comprising a first arrangement (10) that is an arrangement according to any of claims 1 to 12; and a second arrangement (30), the second arrangement (30) comprising a plurality of second detection units (32) each configured to detect an electrical current present in one of the respective first electrical conductors (11); wherein each second detection unit (32) comprises a receiving section (33) for passing a respective first electrical conductor (11) through, each receiving section (33) being aligned with one of the through holes (14) and/or detection units (16) of the first arrangement (10).
  14. The electric measurement system according to claim 13, wherein the second arrangement (30) comprises a further carrier element (34) at which the second detection units (32) are arranged, wherein the further carrier element (34) extends at an angle to the carrier element (12) of the first arrangement (10).
  15. The electric measurement system according to any of claims 13 to 14, wherein the first arrangement (10) and the second arrangement (30) are at least partially received in a housing (100) of the electric measurement system (40).
  16. Method for manufacturing an electric measurement system (40), the electric measurement system (40) comprising a first arrangement (10) that is an arrangement according to any of claim 1 to 12; and a second arrangement (30), the second arrangement (30) comprising a plurality of second detection units (32) each configured to detect an electrical current present in one of the respective first electrical conductors (11); wherein each second detection unit (32) comprises a receiving section (33) for passing a respective first electrical conductor (11) through, each receiving section (33) being aligned with one of the through holes (14) and/or detection units (16) of the first arrangement (10), and wherein the second arrangement (30) comprises a further carrier element (34) at which the second detection units (32) are arranged; wherein the method comprises: • arranging the carrier element (12) of the first arrangement (10) at an angle to the further carrier element (34) of second arrangement (30).

Description

The present disclosure relates to an arrangement for detecting at least one electric parameter, an electric measurement system and a method for manufacturing an electric measurement system. Background In known electrical systems, power from a utility source can be distributed to branch circuits via a panelboard, with circuit breakers installed for protection against overloads. In such systems, an overload occurs when the load exceeds the circuit's capacity. Current transformers are often used to measure current in each branch circuit by stepping down the primary current to safer, standardized values. Current transformers work through a conductive core and wire windings, and the step-down ratio depends on the windings. Traditional current transformers only measure current when it's actively flowing. For these reasons, WO 2021 / 243 304 A1 discloses a system that attempts to sense both current and electric fields in a power circuit, using a current transformer for current measurement and an antenna to detect the electric field, thereby allowing detection even without active current. The antenna can be arranged in a housing together with the current transformer and/or can be fixed to a same base as the housing and current transformer. Details of invention The present disclosure seeks to enable an accurate detection of electric parameters with an improved structure. This object is solved by the independent claims. Optional embodiments are set out in this description, in the figures and in the dependent claims. Accordingly, an arrangement for detecting at least one electric parameter, e.g. at least one type of electric parameter for and/or by each of a number of detection units, is disclosed, the arrangement comprising: a carrier element having a plurality of through holes for passing a respective first electrical conductor through each through hole along a respective first axis;a plurality of detection units each being aligned with one of the through holes, wherein each detection unit comprises at least one second electrical conductor which extends at least partially in a circumferential direction around the first axis;one or more measurement units each being configured to measure at least one electric parameter of one or more of the second electrical conductors, the electric parameter varying according to an electrical field generated by one of the first electrical conductors, and in particular by the first electrical conductor that is respectively associated with the through hole with which the detection unit comprising said second electrical conductor is aligned. In other words, the first electrical conductor generating the electrical field may be the respective one of the first electrical conductors that passes through the through hole having the first axis around which the second electrical conductor extends at least partially in circumferential direction. This arrangement may enable an accurate detection of the electric parameter at a low structural complexity. For example, the arrangement may be easily retrofittable to expand or add measurement capabilities of existing devices. The first electrical conductor(s) are not an integral part of the disclosed arrangement but may, for instance, be inserted into the through holes during real-world use of the arrangement. Alternatively, the first electrical conductor(s) may form an integral part of the disclosed arrangement, e.g. being pre-installed within the through holes for direct use in real-world applications. Through each through hole, an individual first electric conductor may pass along a first axis associated with said through hole. Each first axis may extend orthogonally to a respectively associated through hole and in particular to an opening cross-section of said through hole. Each first axis may be a linear axis and/or may extend orthogonally to the carrier element. All first axes may extend in parallel to each other. Terms such as "axial", "radial" and "circumferential" may relate to a first axis. A radial direction may define an extension along a first axis, a radial direction may define an extension at an angle and in particular orthogonally to a first axis, a circumferential direction may define an extension about a first axis. All through-holes and/or all second electrical conductors may be configured similarly, e.g. in terms of shape and dimension. All through-holes and/or all second electrical conductors may be aligned along a common axis, such as the below discussed second axis, wherein the common axis is in particular a linear axis. The through-holes and/or second electrical conductors may be equidistantly spaced from a respectively adjacent through-hole and/or second electrical conductor, in particular when viewed along the above-mentioned common axis. The carrier element may be plate-shaped. It may be configured as a basis and/or a platform for supporting any of the components arranged thereat. It may be a single-layer component or a multi