CPC G01R 31/52 (2020.01) [G01R 15/18 (2013.01); G01R 19/10 (2013.01); G01R 19/1659 (2013.01); H02H 3/34 (2013.01)] | 20 Claims |
1. An apparatus comprising:
a sensor for the universal-current sensitive determination of an electric differential current, the sensor comprising a magnetic field-sensitive component, a first main winding, a test winding, and a shield,
the magnetic field-sensitive component comprising a through-opening, the through-opening of the magnetic field-sensitive component being formed, in cross section, as an oval having two axes of symmetry,
the first main winding and the test winding surrounding the magnetic field-sensitive component by means of a plurality of windings in each case,
the shield comprising a receiving space which is designed for receiving the magnetic field-sensitive component, the first min winding, and the test winding,
the receiving space of the shield being delimited, in the radial direction, by a shield outside wall and a shield inside wall,
the shield inside wall defining a through-opening of the shield, the through the shield being formed as an oval having two axes of symmetry,
the shield comprising a peripheral gap in the region of the shield inside wall,
the sensor being designed for being arranged around at least two electrical conductors,
the through-opening of the magnetic field-sensitive component, having at least one clear width along an axis of symmetry,
wherein
the at least one clear width is in a range between 25.2 and 32 mm.
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