Measuring transformer arrangement for a high-voltage installation carrying several conductors
AssigneeSiemens Aktiengesellschaft
InventorsWolfgang Hermstein, Heinz Schiemann
Life of this patent
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Abstract
A measuring transformer arrangement is provided for a fluid-insulated high-voltage installation with metal encapsulation carrying several conductors. The measuring transformer arrangement includes at least one conducting or semiconducting tube surrounding each conductor whereat at least one current transformer core with a system of secondary windings mounted on it is attached on the outside of the tube. The tubes are connected with each other and are attached to the metal encapsulation.
Claims66
A measuring transformer arrangement for a metal-encapsulated, fluid-insulated, high-voltage installation equipped with a plurality of conductors comprising:
- a plurality of tube members disposed in surrounding relation to corresponding ones of the conductors, each of said tube members having an inner surface portion facing the conductor disposed therein, said surface portion having a value of electrical conductivity selected from a conductivity value in the range extending from the value of electrical conductivity of a semiconductor to the value of electrical conductivity of metal;
- a plurality of transformer core units corresponding to said tube members, respectively, each of said transformer core units including an iron core, and a secondary winding system mounted on said core;
- mounting means for mutually connecting said tube members and for mounting said tube members on the metal encapsulation, said mounting means comprising a supporting disc mounted to the metal enclosure of the high-voltage installation, said tube members being mounted in said supporting disc;
- and, holding means for mounting said transformer core units to said tube members respectively.
The measuring transformer arrangement of claim 38, each of said insulating clamping means comprising screw means for clamping the fastening shoulder to the fastening tab;
- and annular spacer means for insulating said screw means from said fastening shoulder.
Dependencies are inferred from the claim text.