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Sensor for high voltage environment

  • US 20100007358A1
  • Filed: 06/19/2009
  • Published: 01/14/2010
  • Est. Priority Date: 07/11/2008
  • Status: Active Grant
First Claim
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1. Sensor for measuring electrical parameters in a high voltage environment comprising a high voltage side (4) for connection to high voltage conductors, a low voltage side (6) for connection to low voltage power supply and measurement signal control circuitry, a measurement signal circuit (16), a power supply circuit (14), and at least one isolating transformer (18, 20) for transmission of electrical power supply and/or measurement signals between the low voltage side and the high voltage side, wherein the isolating transformer comprises at least a first and a second transformer core (28, 28

  • , 28

    , 28



    ), a transformer coil (33, 33

    , 33

    , 33



    ) on a circuit board around a branch (27, 27

    , 27

    , 27



    ) of the transformer core on the high voltage side and a transformer coil (32, 32

    , 32

    , 32



    ) on a circuit board around a branch (29, 29

    , 29

    , 29



    ) of the transformer core on the low voltage side, the isolating transformer further is comprising an intermediate coil (34, 36;

    34

    , 36

    ;

    34

    , 36

    ;

    34



    , 36



    ) encircling at least one branch of each said at least two transformer cores.

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