A connection of a connection wire and a connection element are disclosed. In an embodiment a connection includes a connection wire having an insulation and a stud-shaped metallic connection element, wherein the connection wire is wound in a plurality of turns around the connection element, and wherein the turns include a first wire section, in which the connection wire is insulation-stripped, and a second wire section, in which the insulation is present.

Instrument transformer for power grid conductor includes: a current sensing device having a secondary coil winding through which a power grid primary conductor is capable of extending and connecting to a primary conductor connector, a first low voltage (LV) lead connected to the secondary coil winding and a LV connector, and a first high voltage (HV) lead connected between the primary conductor connector and a HV connector, the voltage sensing device having a core with a primary coil winding, a second HV lead connected between a HV connector and primary coil winding, a grounding conductor connected between the primary coil winding and an output terminal, a second LV lead connected between a LV connector and output terminal, wherein the current and voltage sensing devices are electrically connected via HV and LV connectors, and wherein the current and voltage sensing devices are separable when corresponding HV and LV connectors are disconnected.

An electric terminal block having a block housing, two conductor connection elements, two current bars, and two additional current bar pieces. Each current bar has a connection portion, and first and second contact portions, each connection portion being paired with a conductor connection element. To obtain a reliable switching sequence when plugging and unplugging an operating or test plug, the terminal housing is equipped with two spring elements, each of which has a connection portion and an elastic contact portion; each of the spring elements is electrically connected to one of the current bar pieces; the contact portions together form a second contact region for receiving the plug, and being mutually spaced when the plug is not plugged in. The contact region of the spring elements is arranged in front of the contact region of the current bars in the plug-in direction of the plug.

Electrical current transducer for measuring an electric current in a primary conductor, including a housing (4), a magnetic core (6) surrounding a central aperture (9) through which the primary conductor extends, and a magnetic field sensing device (8) comprising connection terminals (18). The housing comprises a magnetic core receiving cavity (22) in which the magnetic core is lodged and a connecting interface portion (25) in which the magnetic field sensing is lodged, the connecting interface projecting outwardly from the magnetic core receiving cavity and comprising latching elements complementary to latching elements of a separate connector interface element (11) selectively mountable to the connecting interface portion. The connector interface element comprises a connector shroud (14) forming with the connection terminals a pluggable connector interface for pluggable connection to an external pluggable connector, the current transducer adapted for mounting on an external circuit board without connector shroud.

An electric terminal block having a block housing, two conductor connection elements, two current bars, and two additional current bar pieces. Each current bar has a connection portion, and first and second contact portions, each connection portion being paired with a conductor connection element. To obtain a reliable switching sequence when plugging and unplugging an operating or test plug, the terminal housing is equipped with two spring elements, each of which has a connection portion and an elastic contact portion; each of the spring elements is electrically connected to one of the current bar pieces; the contact portions together form a second contact region for receiving the plug, and being mutually spaced when the plug is not plugged in. The contact region of the spring elements is arranged in front of the contact region of the current bars in the plug-in direction of the plug.

A mechanical and electrical connection system including a printed circuit board, a busbar and an electrical component, wherein the board includes a first orifice in which a bottom foot of the bar is received and includes a second orifice in which a lug of the component is received, and wherein the bar includes an elastically deformable clamp which receives the lug of the component.

Electrical current transducer for measuring an electric current in a primary conductor, including a housing (4), a magnetic core (6) surrounding a central aperture (9) through which the primary conductor extends, and a magnetic field sensing device (8) comprising connection terminals (18). The housing comprises a magnetic core receiving cavity (22) in which the magnetic core is lodged and a connecting interface portion (25) in which the magnetic field sensing is lodged, the connecting interface projecting outwardly from the magnetic core receiving cavity and comprising latching elements complementary to latching elements of a separate connector interface element (11) selectively mountable to the connecting interface portion. The connector interface element comprises a connector shroud (14) forming with the connection terminals a pluggable connector interface for pluggable connection to an external pluggable connector, the current transducer adapted for mounting on an external circuit board without connector shroud.

A cable unit designed for connecting a gradient coil, which is embodied to generate a magnetic field gradient in one spatial direction, to a power amplifier, having at least one feed line, wherein the feed line comprises at least two cable elements at least in sections, and the at least two cable elements are connected electrically in parallel.