Instrument transformer for measuring at least one electricity property in a conductor of a power grid

An instrument transformer for measuring at least one property of electricity in a conductor of a power grid, comprising:

• a current sensing device having a secondary coil winding through which a primary conductor of the power grid is capable of extending and connecting to a primary conductor connector, a first low voltage lead connected to the secondary coil winding and a low voltage connector, and a first high voltage lead connected between the primary conductor connector and a high voltage connector, the current sensing device being encapsulated in a resin;
• a voltage sensing device having a core with a primary coil winding wound thereupon, a second high voltage lead connected between a high voltage connector and the primary coil winding, a grounding conductor connected between the primary coil winding and an output terminal, a second low voltage lead connected between a low voltage connector and the output terminal, the voltage sensing device being encapsulated in a resin;
• and
• wherein the current and voltage sensing devices are electrically connected to form the instrument transformer when the corresponding high voltage connectors and low voltage connectors are connected together and wherein the current and voltage sensing devices are separable when the corresponding high voltage and low voltage connectors are disconnected.