US 11,982,691 B2
Measuring an electrical voltage on a metal-encapsulated switchgear
Stefan Giere, Brandenburg (DE); Thomas Heinz, Berlin (DE); and Thomas Hilker, Stahnsdorf (DE)
Assigned to Siemens Energy Global GmbH & Co. KG, Munich (DE)
Appl. No. 17/633,654
Filed by Siemens Energy Global GmbH & Co. KG, Munich (DE)
PCT Filed Jul. 10, 2020, PCT No. PCT/EP2020/069487
§ 371(c)(1), (2) Date Feb. 8, 2022,
PCT Pub. No. WO2021/023471, PCT Pub. Date Feb. 11, 2021.
Claims priority of application No. 10 2019 211 950.6 (DE), filed on Aug. 8, 2019.
Prior Publication US 2022/0317159 A1, Oct. 6, 2022
Int. Cl. G01R 15/18 (2006.01); H02B 13/035 (2006.01)
CPC G01R 15/181 (2013.01) [H02B 13/0356 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A measuring apparatus for measuring an electrical voltage for a metal-encapsulated switchgear, the measuring apparatus comprising:
an electrical conductor;
an electrically conductive measuring electrode that surrounds a conductor portion of the electrical conductor and is electrically insulated from said electrical conductor; and
an electrically conductive field control electrode that is electrically insulated from said electrical conductor and from said measuring electrode;
said field control electrode having a field control electrode portion that surrounds said measuring electrode;
wherein said conductor portion of said electrical conductor is a first conductor portion and said field control electrode portion of said field control electrode that surrounds said measuring electrode is a first field control electrode portion;
said field control electrode further comprising a second field control electrode portion that surrounds a second conductor portion of said electrical conductor; and
said second field control electrode portion having a maximum diameter in a plane perpendicular to said electrical conductor that is smaller than a diameter of said first field control electrode portion.