Measuring transformer arrangement, comprising - a voltage transformer having a voltage transformer housing and a voltage transformer primary winding, and - a current transformer having an electrically conductive current transformer housing which is connected to the voltage transformer housing to form a housing of the measuring transformer arrangement, a first primary conductor connection electrically insulated from the voltage transformer primary winding, a second primary conductor connection, and a plurality of primary conductor sections (32 to 35) routed through the current transformer housing, wherein the first and the second primary conductor connection (37, 38) are arranged outside the current transformer housing, and wherein - a selectable number of the plurality of primary conductor sections (32 to 35) are able to be electrically interconnected in series to form a current transformer primary conductor electrically connecting the primary conductor connections (37, 38), wherein such an interconnection comprises an electrical connection of two primary conductor sections (32 to 35) via the current transformer housing, characterized in that the second primary conductor connection is able to be electrically connected to a first end of the voltage transformer primary winding, wherein the voltage transformer housing is electrically conductive and is electrically insulated with respect to the current transformer housing, the first end of the voltage transformer primary winding is electrically connected to the voltage transformer housing, and the second primary conductor connection is able to be electrically connected to the voltage transformer housing. - a voltage transformer having a voltage transformer housing and a voltage transformer primary winding, and - a current transformer having an electrically conductive current transformer housing which is connected to the voltage transformer housing to form a housing of the measuring transformer arrangement, a first primary conductor connection electrically insulated from the voltage transformer primary winding, a second primary conductor connection, and a plurality of primary conductor sections (32 to 35) routed through the current transformer housing, wherein the first and the second primary conductor connection (37, 38) are arranged outside the current transformer housing, and wherein - a selectable number of the plurality of primary conductor sections (32 to 35) are able to be electrically interconnected in series to form a current transformer primary conductor electrically connecting the primary conductor connections (37, 38), wherein such an interconnection comprises an electrical connection of two primary conductor sections (32 to 35) via the current transformer housing, the second primary conductor connection is able to be electrically connected to a first end of the voltage transformer primary winding, wherein the voltage transformer housing is electrically conductive and is electrically insulated with respect to the current transformer housing, the first end of the voltage transformer primary winding is electrically connected to the voltage transformer housing, and the second primary conductor connection is able to be electrically connected to the voltage transformer housing.